WO2014175058A1 - Imaging lens, imaging device, and mobile terminal - Google Patents
Imaging lens, imaging device, and mobile terminal Download PDFInfo
- Publication number
- WO2014175058A1 WO2014175058A1 PCT/JP2014/060168 JP2014060168W WO2014175058A1 WO 2014175058 A1 WO2014175058 A1 WO 2014175058A1 JP 2014060168 W JP2014060168 W JP 2014060168W WO 2014175058 A1 WO2014175058 A1 WO 2014175058A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lens
- imaging
- imaging lens
- optical axis
- refractive power
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
Definitions
- the present invention relates to an imaging lens, an imaging device, and a portable terminal including the imaging lens using a solid-state imaging device such as a CCD image sensor or a CMOS image sensor.
- a solid-state imaging device such as a CCD image sensor or a CMOS image sensor.
- a device equipped with an imaging device using an element has been supplied to the market.
- Conventional general imaging devices having a high number of pixels have been accompanied by an increase in size, but in recent years, the miniaturization of pixels has progressed and the imaging devices have become smaller.
- An imaging lens used for such a miniaturized imaging device is required to have a high resolving power, but the resolving power is limited by the F number, and a bright lens with a small F number can obtain a high resolving power.
- an imaging lens that is brighter than F2.4, which is suitable for an imaging device with high pixel size, miniaturization, and miniaturization has been demanded.
- a six-lens imaging lens has been proposed that can have a larger aperture ratio and higher performance than a four- or five-lens configuration.
- a first lens having a positive refractive power As a six-lens imaging lens, a first lens having a positive refractive power, a second lens having a negative refractive power, an aperture stop, a third lens having a positive refractive power, and a negative refractive power in order from the object side.
- An imaging lens including a fourth lens having a fifth lens having a positive refractive power and a sixth lens having a negative refractive power is disclosed in Patent Document 1, for example.
- JP 2012-155223 A US Patent Publication No. 2012/0188654
- the imaging lens described in Patent Document 1 has an aperture stop disposed behind the second lens, and in order to ensure good telecentric characteristics, the entire length of the imaging lens must be increased and the size of the imaging lens can be reduced. Not suitable for.
- Patent Document 2 discloses an imaging lens including a fourth lens having power, a fifth lens having positive refractive power, and a sixth lens having negative refractive power.
- the imaging lens described in Patent Document 2 is sufficiently small because of insufficient aberration correction. Further, it is a dark imaging lens with an F number of F2.8, and it has not been able to cope with the recent increase in pixels and performance.
- the present invention has been made in view of the above problems, and has a six-image structure having a brightness of F2.4 or higher, in which various aberrations are well corrected while being smaller than the conventional type.
- An object is to provide a lens, an imaging device using the lens, and a portable terminal.
- the present invention aims at miniaturization at a level satisfying the following expression.
- the entire imaging apparatus can be reduced in size and weight.
- L Distance on the optical axis from the lens surface closest to the object side to the image-side focal point of the entire imaging lens system 2Y: diagonal length of the imaging surface of the solid-state imaging device (diagonal length of the rectangular effective pixel region of the solid-state imaging device)
- the image-side focal point refers to an image point when a parallel light beam parallel to the optical axis is incident on the imaging lens.
- a parallel plate such as an optical low-pass filter, an infrared cut filter, or a seal glass of a solid-state image sensor package is disposed between the image-side surface of the imaging lens and the image-side focal position, the imaging lens is parallel.
- the flat plate portion is calculated as the above L value after the air conversion distance. More preferably, the range of the following formula is good. L / 2Y ⁇ 0.80 (13) '
- An imaging lens is an imaging lens for forming a subject image on a photoelectric conversion unit of a solid-state imaging device,
- a first lens having a brightness of F2.4 or more, having a positive refractive power in order from the object side, a convex surface facing the object side in the vicinity of the optical axis, and a curvature that is stronger on the object side than on the image side
- a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens, a fifth lens, and a sixth lens having a negative refractive power and having a concave surface facing the image side in the vicinity of the optical axis Consists of
- the image side surface of the sixth lens has an aspherical shape, has an extreme value at a position other than the intersection with the optical axis, and an aperture stop is disposed closer to the object side than the second lens image side surface.
- the basic configuration of the present invention for obtaining a compact imaging lens with good aberration correction is, in order from the object side, having a positive refractive power, with the convex surface facing the object side in the vicinity of the optical axis, and the object side rather than the image side surface.
- the first lens having a stronger curvature on the side surface
- the second lens having a negative refractive power
- the third lens having a positive refractive power
- the fourth lens, the fifth lens and the vicinity of the optical axis having a negative refractive power
- a sixth lens having a concave surface facing the image side.
- This lens configuration of a so-called telephoto type in which a positive lens group including a first lens, a second lens, a third lens, a fourth lens, and a fifth lens and a negative sixth lens are arranged in this order from the object side.
- This is an advantageous configuration for reducing the overall length of the imaging lens.
- the object side surface of the first lens is convex, and the object side surface has a stronger curvature than the image side surface, so that the combined principal point position of the entire imaging lens system can be moved closer to the object side. This is advantageous for reducing the overall length of the lens.
- the third lens is a positive lens and the first lens to the third lens are arranged in order of positive and negative, it is possible to satisfactorily correct spherical aberration and curvature of field. it can.
- the aspherical shape having an extreme value at a position other than the intersection with the optical axis makes it easy to ensure the telecentric characteristics of the image-side light beam.
- the “extreme value” is a point on the aspheric surface where the tangent plane of the aspheric vertex is a plane perpendicular to the optical axis in the curve of the lens cross-sectional shape within the effective radius.
- the aperture stop By arranging the aperture stop closer to the object side than the side surface of the second lens image, it is possible to achieve both a reduction in the overall length of the imaging lens and good telecentric characteristics. Furthermore, by setting the F-number of the imaging lens to a brightness of F2.4 or higher (F value is small), an imaging lens that can cope with recent high performance can be obtained.
- Conditional expression (1) defines the Abbe number of the material of the third lens and is a conditional expression for correcting the chromatic aberration of the entire imaging lens in a well-balanced manner.
- the third lens By configuring the third lens with a material in the range of conditional expression (1), it is possible to correct axial chromatic aberration and lateral chromatic aberration with a good balance. More preferably, the range of the following formula is good. 45.0 ⁇ 3 ⁇ 60.0 (1) ′
- Conditional expression (2) is a conditional expression for appropriately setting the air space on the optical axis of the fourth lens and the fifth lens.
- the value of the conditional expression (2) exceeds the lower limit, the fourth lens and the fifth lens are not brought too close to each other, and the fourth lens and the fifth lens having a large aspheric amount in the peripheral portion are close to each other. It is possible to reduce performance deterioration when eccentricity occurs.
- the value of conditional expression (2) is less than the upper limit, the third lens and the fourth lens can be appropriately separated, and thus the light flux of each image height passing through the fourth lens is individually corrected for aberration. You can make it easier.
- An imaging apparatus includes the imaging lens.
- a portable terminal according to the present invention includes the above-described imaging device.
- a six-lens imaging lens having a brightness of F2.4 or more, in which various aberrations are favorably corrected while being smaller than the conventional type, and an imaging device and a portable terminal using the imaging lens. Can be provided.
- FIG. 3 is a diagram schematically showing a cross section along the optical axis of an imaging optical system of the imaging unit 50.
- FIG. It is the front view (a) of the smart phone as a portable terminal to which an imaging unit is applied, and the back view (b) of the smart phone to which the imaging unit is applied.
- It is a control block diagram of the smart phone of FIG. 3 is a cross-sectional view in the optical axis direction of the imaging lens of Example 1.
- FIG. FIG. 4 is an aberration diagram of Example 1 (spherical aberration (a), astigmatism (b), distortion (c), and meridional coma aberration (d)).
- FIG. 6 is a cross-sectional view in the optical axis direction of the imaging lens of Example 2.
- FIG. 6 is an aberration diagram of Example 2 (spherical aberration (a), astigmatism (b), distortion (c), and meridional coma aberration (d)).
- 6 is a cross-sectional view in the optical axis direction of the imaging lens of Embodiment 3.
- FIG. 6 is an aberration diagram of Example 3 (spherical aberration (a), astigmatism (b), distortion (c), and meridional coma aberration (d)).
- 6 is a cross-sectional view in the optical axis direction of an imaging lens of Example 4.
- FIG. 6 is an aberration diagram of Example 4 (spherical aberration (a), astigmatism (b), distortion (c), and meridional coma aberration (d)).
- 6 is a cross-sectional view in the optical axis direction of the imaging lens of Example 5.
- FIG. FIG. 6 is an aberration diagram of Example 5 (spherical aberration (a), astigmatism (b), distortion (c), and meridional coma aberration (d)).
- 7 is a cross-sectional view in the optical axis direction of an imaging lens of Example 6.
- FIG. FIG. 10 is an aberration diagram of Example 6 (spherical aberration (a), astigmatism (b), distortion (c), and meridional coma aberration diagram (d)).
- FIG. 1 is a perspective view of the imaging unit 50 according to the present embodiment
- FIG. 2 is a diagram schematically showing a cross section along the optical axis of the imaging lens of the imaging unit 50.
- the imaging unit 50 includes a CMOS type imaging device 51 as a solid-state imaging device having a photoelectric conversion unit 51 a and an imaging lens 10 that causes the photoelectric conversion unit 51 a of the imaging device 51 to image a subject image.
- a parallel plate-shaped optical filter 54 disposed between the imaging lens 10 and the imaging element 51, an actuator 55 that drives the imaging lens 10, and the imaging element 51 are mounted.
- the base member 57 that holds the imaging lens 10 and the actuator 55.
- the imaging element 51 has a photoelectric conversion part 51 a as a light receiving part in which pixels (photoelectric conversion elements) are two-dimensionally arranged at the center of the plane on the light receiving side.
- a signal processing circuit (not shown) is formed around the periphery.
- Such a signal processing circuit includes a drive circuit unit that sequentially drives each pixel to obtain a signal charge, an A / D conversion unit that converts each signal charge into a digital signal, and a signal that forms an image signal output using the digital signal. It consists of a processing unit and the like.
- a large number of pads are arranged in the vicinity of the outer edge of the plane on the light receiving side of the image sensor 51, and are connected to the substrate 52 via wires 51b.
- the image sensor 51 converts the signal charge from the photoelectric conversion unit 51a into an image signal such as a digital YUV signal, and outputs it to a predetermined circuit on the substrate 52 via a wire (not shown).
- Y is a luminance signal
- the image sensor is not limited to the above CMOS image sensor, and other devices such as a CCD may be used.
- the pedestal member 57 integrally formed of resin has a generally rectangular parallelepiped housing shape, and includes four side wall portions 57a provided so as to surround the image sensor 51 and an upper wall portion 57b intersecting with the upper end thereof. Have. A rectangular opening 57c is formed at the center of the upper wall portion 57b, and the optical filter 54 is attached to the upper wall portion 57b so as to cover the opening 57c.
- the substrate 52 supports the imaging element 51 and the pedestal member 57 on its upper surface.
- the actuator 55 includes a cylindrical carrier 55a screwed into the lens barrel 53, a coil 55b attached to the carrier 55a and extending in the optical axis direction, a magnet 55c arranged to oppose the coil 55b, and a magnet 55c. It consists of a supported housing-like yoke 55d.
- the coil 55b is connected to an external circuit via a wiring (not shown).
- the lower end of the yoke 55d is bonded onto the upper wall portion 57b of the base member 57.
- the carrier 55a is urged toward the image sensor 51 by an elastic member (not shown).
- a flange portion 53 a provided with a small opening (here, an aperture stop) S is formed on the object side of the lens barrel 53.
- the imaging lens 10 disposed in the lens barrel 53 has, in order from the object side, a positive refractive power, a convex surface facing the object side in the vicinity of the optical axis, and a curvature (small curvature) that is stronger on the object side than on the image side.
- a second lens L2 having a negative refractive power
- a fourth lens L4 having a positive refractive power
- a fifth lens L5 having a negative refractive power
- the sixth lens L6 has a concave surface facing the image side in the vicinity.
- the flanges are directly butted to adjust the interval in the optical axis direction, and light-shielding stops SH1 to SH4 are provided inside the butted flanges.
- the fifth lens L5 and the sixth lens L6 adjust the distance in the optical axis direction by interposing a light-shielding stop SH5 between the flanges.
- the image side surface of the second lens L2 has a shape that monotonously falls toward the image side as the distance from the optical axis increases.
- the third lens L3 has a shape that falls to the object side at the periphery.
- the image side surface of the sixth lens L6 has an aspheric shape, and has an extreme value P (only one side is shown) at a position other than the intersection with the optical axis.
- the aperture stop S is disposed on the object side of the image side surface of the second lens L2, and is provided on the object side of the first lens L1 here.
- the imaging lens 10 satisfies the following conditional expression.
- FIGS. 3A and 3B are diagrams illustrating a state in which the imaging unit 50 is mounted on a smartphone 100 as a mobile terminal.
- FIG. 4 is a control block diagram of the smartphone 100.
- the object-side end surface of the lens barrel 53 is provided on the back surface of the smartphone 100 (see FIG. 3B), and is disposed at a position corresponding to the back side of the touch panel 70.
- the imaging unit 50 is connected to the control unit 101 of the smartphone 100 and outputs an image signal such as a luminance signal or a color difference signal to the control unit 101 side.
- the smartphone 100 performs overall control of each unit, and also inputs a control unit (CPU) 101 that executes a program corresponding to each process, and inputs a number and the like with a key.
- Unit 60 a liquid crystal display unit 70 for displaying captured images in addition to predetermined data, a wireless communication unit 80 for realizing various information communication with an external server, a system program for mobile phone 100, Obtained by a storage unit (ROM) 91 storing various processing programs and necessary data such as a terminal ID, and various processing programs and data executed by the control unit 101, or processing data, or the imaging unit 50
- a temporary storage unit (RAM) 92 that is used as a work area for temporarily storing imaging data and the like.
- the smartphone 100 operates by operating the input unit 60, and touches an icon 71 or the like displayed on the touch panel (display unit) 70 to operate the imaging unit 50 to perform imaging.
- the lens barrel 53 can be moved together with the imaging lens 10 in the optical axis direction to perform focusing.
- the image signal input from the imaging unit 50 is subjected to image processing by the control unit 101, stored in the storage unit 92 or displayed on the touch panel 70 by the control system of the smartphone 100, and further, a wireless communication unit It is transmitted to the outside as video information via 80.
- Imaging lens of the present invention will be shown below. Symbols used in each example are as follows. The unit of length is mm. f: Focal length of the entire imaging lens fB: Back focus F: F number 2Y: Diagonal length of imaging surface of solid-state imaging device ENTP: Entrance pupil position (distance from first surface to entrance pupil position) EXTP: Exit pupil position (distance from imaging surface to exit pupil position) H1: Front principal point position (distance from the first surface to the front principal point position) H2: Rear principal point position (distance from the final surface to the rear principal point position) R: radius of curvature D: axial distance Nd: refractive index ⁇ d of lens material with respect to d-line: Abbe number of lens material
- the surface described with “*” after each surface number is a surface having an aspheric shape, and the shape of the aspheric surface has the vertex of the surface as the origin and the X axis in the optical axis direction.
- the height in the direction perpendicular to the optical axis is h, and is expressed by the following “Equation 1”.
- Example 1 shows lens data of Example 1.
- a power of 10 for example, 2.5 ⁇ 10 ⁇ 02
- E for example, 2.5E-02
- FIG. 5 is a sectional view of the lens of Example 1.
- a first lens L1 having a positive refractive power and a convex surface facing the object side in the vicinity of the optical axis and having a curvature that is stronger on the object side surface than on the image side surface
- a second lens L2 having a negative refractive power
- a third lens L3 having a positive refractive power
- a fourth lens L4 having a negative refractive power
- a fifth lens L5 having a positive refractive power
- the sixth lens L6 is 2.08.
- FIG. 6 is an aberration diagram of Example 1 (spherical aberration (a), astigmatism (b), distortion aberration (c), and meridional coma aberration diagram (d)).
- the solid line represents the spherical aberration amount and the coma aberration amount with respect to the d line and the dotted line, respectively.
- the solid line S represents the sagittal surface and the dotted line M. Represents a meridional plane (hereinafter the same).
- Example 2 Table 2 shows lens data of the imaging lens of Example 2.
- FIG. 7 is a sectional view of the lens of Example 2.
- a first lens L1 having a positive refractive power and a convex surface facing the object side in the vicinity of the optical axis and having a curvature that is stronger on the object side surface than on the image side surface
- a second lens L2 having a negative refractive power
- a third lens L3 having a positive refractive power
- a fourth lens L4 having a negative refractive power
- a fifth lens L5 having a positive refractive power
- the sixth lens L6 is 2.06.
- the aperture stop S is disposed closer to the object side than the effective diameter of the object side surface of the first lens L1.
- I indicates an imaging surface.
- F is a parallel plate assuming an optical low-pass filter, an IR cut filter, a seal glass of a solid-state image sensor, or the like.
- FIG. 8 is an aberration diagram of Example 2 (spherical aberration (a), astigmatism (b), distortion (c), and meridional coma aberration (d)).
- Table 3 shows lens data of the imaging lens of Example 3.
- FIG. 9 is a sectional view of the lens of Example 3.
- a first lens L1 having a positive refractive power and a convex surface facing the object side in the vicinity of the optical axis and having a curvature that is stronger on the object side surface than on the image side surface
- a second lens L2 having a negative refractive power
- a third lens L3 having a positive refractive power
- a fourth lens L4 having a negative refractive power
- a fifth lens L5 having a positive refractive power
- the sixth lens L6 The F number is 1.84.
- the aperture stop S is disposed closer to the object side than the effective diameter of the object side surface of the first lens L1.
- I indicates an imaging surface.
- F is a parallel plate assuming an optical low-pass filter, an IR cut filter, a seal glass of a solid-state image sensor, or the like.
- FIG. 10 is an aberration diagram of Example 3 (spherical aberration (a), astigmatism (b), distortion (c), and meridional coma aberration (d)).
- Example 4 shows lens data of the imaging lens of Example 4.
- FIG. 11 is a sectional view of the lens of Example 4.
- a first lens L1 having a positive refractive power and a convex surface facing the object side in the vicinity of the optical axis and having a curvature that is stronger on the object side surface than on the image side surface
- a second lens L2 having a negative refractive power
- a third lens L3 having a positive refractive power
- a fourth lens L4 having a negative refractive power
- a fifth lens L5 having a positive refractive power
- the sixth lens L6 The F number is 1.86.
- the aperture stop S is disposed closer to the object side than the effective diameter of the object side surface of the first lens L1.
- I indicates an imaging surface.
- F is a parallel plate assuming an optical low-pass filter, an IR cut filter, a seal glass of a solid-state image sensor, or the like.
- FIG. 12 is an aberration diagram of Example 4 (spherical aberration (a), astigmatism (b), distortion (c), and meridional coma aberration (d)).
- Table 5 shows lens data of the imaging lens of Example 5.
- FIG. 13 is a sectional view of the lens of Example 5.
- a first lens L1 having a positive refractive power and a convex surface facing the object side in the vicinity of the optical axis and having a curvature that is stronger on the object side surface than on the image side surface
- a second lens L2 having a negative refractive power
- a third lens L3 having a positive refractive power
- a fourth lens L4 having a negative refractive power
- a fifth lens L5 having a positive refractive power
- the sixth lens L6 The F number is 1.65.
- the aperture stop S is disposed closer to the object side than the effective diameter of the object side surface of the first lens L1.
- I indicates an imaging surface.
- F is a parallel plate assuming an optical low-pass filter, an IR cut filter, a seal glass of a solid-state image sensor, or the like.
- FIG. 14 is an aberration diagram of Example 5 (spherical aberration (a), astigmatism (b), distortion (c), and meridional coma aberration diagram (d)).
- Table 6 shows lens data of the imaging lens of Example 6.
- FIG. 15 is a sectional view of the lens of Example 6.
- a first lens L1 having a positive refractive power and a convex surface facing the object side in the vicinity of the optical axis and having a curvature that is stronger on the object side surface than on the image side surface
- a second lens L2 having a negative refractive power
- a third lens L3 having a positive refractive power
- a fourth lens L4 having a negative refractive power
- a fifth lens L5 having a positive refractive power
- the sixth lens L6 The F number is 1.65.
- the aperture stop S is disposed closer to the object side than the effective diameter of the object side surface of the first lens L1.
- I indicates an imaging surface.
- F is a parallel plate assuming an optical low-pass filter, an IR cut filter, a seal glass of a solid-state image sensor, or the like.
- FIG. 16 is an aberration diagram of Example 6 (spherical aberration (a), astigmatism (b), distortion (c), and meridional coma aberration (d)).
- Table 7 shows the values of each example corresponding to each conditional expression.
- an energy curable resin as the material of the imaging lens, since the optical performance degradation when exposed to high temperatures is small compared to a lens using a thermoplastic resin such as polycarbonate or polyolefin, It is effective for the reflow process, is easier to manufacture than a glass mold lens, is inexpensive, and can achieve both low cost and mass productivity of an imaging apparatus incorporating an imaging lens.
- the energy curable resin refers to both a thermosetting resin and an ultraviolet curable resin.
- the imaging lens of the present invention may be formed using the above-described energy curable resin.
- the principal ray incident angle of the light beam incident on the imaging surface of the solid-state imaging device is not necessarily designed to be sufficiently small in the periphery of the imaging surface.
- recent techniques have made it possible to reduce shading by reviewing the arrangement of the color filters of the solid-state imaging device and the on-chip microlens array. Specifically, if the pitch of the arrangement of the color filters and the on-chip microlens array is set slightly smaller than the pixel pitch of the image pickup surface of the image pickup device, the color filter or Since the on-chip microlens array is shifted to the optical axis side of the imaging lens, the obliquely incident light beam can be efficiently guided to the light receiving portion of each pixel. Thereby, the shading which generate
- the present embodiment is a design example aiming at further miniaturization with respect to the portion where the requirement is relaxed.
- f1234 Composite focal length from the first lens to the fourth lens (mm)
- f Focal length (mm) of the entire imaging lens system
- Conditional expression (3) is a conditional expression for appropriately setting the combined focal length from the first lens to the fourth lens. If the value of the conditional expression (3) exceeds the lower limit, the combined focal length of the fourth lens from the first lens does not become too short, and the first lens whose power tends to increase among the first lens to the fourth lens. And various aberrations occurring in the second lens can be suppressed. On the other hand, when the value of conditional expression (3) is below the upper limit, the combined power from the first lens to the fourth lens can be maintained moderately, and the overall length of the imaging lens can be shortened. More preferably, the range of the following formula is good. 1.20 ⁇ f1234 / f ⁇ 1.90 (3) ′
- f2 Focal length (mm) of the second lens
- f Focal length (mm) of the entire imaging lens system
- Conditional expression (4) is a conditional expression for appropriately setting the focal length of the second lens.
- the value of the upper limit expression (4) is less than the upper limit, the negative refractive power of the second lens does not become unnecessarily strong, and the coma and distortion at the peripheral portion can be reduced.
- the value of the upper limit expression (4) exceeds the lower limit, the negative refractive power of the second lens can be maintained appropriately, which is effective in reducing Petzval sum and correcting field curvature. More preferably, the range of the following formula is good. ⁇ 1.60 ⁇ f2 / f ⁇ 1.20 (4) ′
- f3 Focal length (mm) of the third lens
- f Focal length (mm) of the entire imaging lens system
- Conditional expression (5) is a conditional expression for appropriately setting the focal length of the third lens.
- the value of conditional expression (5) is below the upper limit, the refractive power of the third lens can be maintained moderately, and the so-called triplet effect in which the first lens to the third lens are arranged in order of positive and negative. Therefore, curvature of field and astigmatism can be corrected satisfactorily.
- the value of conditional expression (5) exceeds the lower limit, the refractive power of the third lens does not become too strong, and the entire length of the imaging lens can be shortened. More preferably, the range of the following formula is good. 2.00 ⁇ f3 / f ⁇ 5.50 (5) ′
- r1 radius of curvature of the side surface of the first lens object (mm)
- f Focal length (mm) of the entire imaging lens system
- Conditional expression (6) is a conditional expression for appropriately setting the curvature radius of the side surface of the first lens object to appropriately shorten the imaging lens and to correct the aberration.
- the value of conditional expression (6) is below the upper limit, the refractive power of the side surface of the first lens object can be appropriately maintained, and the composite principal point of the first lens and the second lens is arranged closer to the object side. The overall length of the imaging lens can be shortened.
- the value of conditional expression (6) exceeds the lower limit, the refractive power on the side surface of the first lens object does not increase more than necessary, and high-order spherical aberration and coma aberration generated in the first lens are reduced. Can be suppressed. More preferably, the range of the following formula is good. 0.35 ⁇ r1 / f ⁇ 0.50 (6) ′
- Conditional expression (7) is a condition for appropriately setting the curvature radius of the second lens image side surface.
- the image side surface of the second lens a strong divergence surface that satisfies the conditional expression (7), the axial chromatic aberration generated by the first lens having positive refractive power is corrected well by the second lens. be able to.
- the value of conditional expression (7) exceeds the lower limit, the radius of curvature does not become too small, and the workability is not impaired.
- the value of conditional expression (7) is below the upper limit, chromatic aberration can be corrected well while keeping the Petzval sum small. More preferably, the range of the following formula is good. 0.45 ⁇ r4 / f ⁇ 0.85 (7) ′
- THIL2 thickness on the optical axis of the second lens (mm)
- f Focal length (mm) of the entire imaging lens system
- Conditional expression (8) is a conditional expression for appropriately setting the thickness of the second lens on the optical axis.
- the value of conditional expression (8) exceeds the lower limit, the thickness of the second lens does not become too thin, and the moldability is not impaired.
- the value of conditional expression (8) is less than the upper limit, the thickness of the second lens does not become too thick, and it becomes easy to secure the lens interval before and after L2, and as a result, the overall length of the imaging lens can be shortened. it can. More preferably, the range of the following formula is good. 0.03 ⁇ THIL2 / f ⁇ 0.15 (8) ′
- THIL6 thickness of the sixth lens on the optical axis (mm)
- f Focal length (mm) of the entire imaging lens system
- Conditional expression (9) is a conditional expression for appropriately setting the thickness of the sixth lens on the optical axis.
- the value of conditional expression (9) exceeds the lower limit, the thickness of the sixth lens does not become too thin, and the moldability is not impaired.
- the value of conditional expression (9) is less than the upper limit, the thickness of the sixth lens does not become too thick, and it becomes easy to ensure the back focus. More preferably, the range of the following formula is good. 0.15 ⁇ THIL6 / f ⁇ 0.25 (9) '
- Conditional expression (10) is a conditional expression for appropriately setting the deviation ratio of the sixth lens.
- the thickness deviation ratio here means a value obtained by dividing the lens thickness seen in the direction parallel to the optical axis at the periphery of the sixth lens by the center thickness on the optical axis.
- the value of conditional expression (10) is below the upper limit, the uneven thickness ratio does not become excessively large, and the moldability can be prevented from being impaired. This is because in a lens that tends to have a large thickness ratio such as the sixth lens, when the thickness ratio increases, defects such as welds are likely to occur.
- conditional expression (10) exceeds the lower limit, the thickness ratio can be appropriately set, the aberration correction in the vicinity can be made good, and good telecentric characteristics can be secured. Become. More preferably, the range of the following formula is good. 3.0 ⁇ HENL6 ⁇ 4.5 (10) '
- the fourth lens preferably has negative refractive power and satisfies the following conditional expression. 20 ⁇ 3- ⁇ 4 ⁇ 70 (11) However, ⁇ 3: Abbe number of the third lens ⁇ 4: Abbe number of the fourth lens
- Conditional expression (11) is a conditional expression for satisfactorily correcting chromatic aberration of the entire imaging lens system.
- conditional expression (11) exceeds the lower limit, chromatic aberrations such as axial chromatic aberration and lateral chromatic aberration can be corrected with good balance.
- conditional expression (11) is below the upper limit, it can be made of an easily obtainable glass material. More preferably, the range of the following formula is good. 25 ⁇ 3- ⁇ 4 ⁇ 65 (11) '
- Conditional expression (12) is a conditional expression for satisfactorily correcting chromatic aberration of the entire imaging lens system.
- conditional expression (12) exceeds the lower limit, chromatic aberrations such as axial chromatic aberration and lateral chromatic aberration can be corrected in a well-balanced manner.
- conditional expression (12) is less than the upper limit, it can be made of an easily available glass material. More preferably, the range of the following formula is good. 25 ⁇ 1- ⁇ 2 ⁇ 65 (12) '
- the object side surface of the sixth lens has an aspherical shape and has an extreme value at a position other than the intersection with the optical axis.
- the image side surface of the second lens is monotonously inclined to the image side as the distance from the optical axis increases.
- a lens having a relatively large refractive power such as the second lens has a shape having an extreme value at a position other than the intersection with the optical axis
- “monotonously falls” means that the curved surface has no extreme value.
- the third lens has a shape that falls to the object side at the periphery.
- the shape of the periphery of the third lens can be made close to the concentric shape with respect to the aperture stop, and the axis generated by the third lens Various external aberrations can be suppressed.
- a lens having substantially no refractive power may be provided. That is, even when a dummy lens having substantially no power is added to the configuration of the imaging lens of the present invention, it is within the scope of the present invention.
- the present invention can provide an imaging lens suitable for a small portable terminal.
- Imaging lens 50 Imaging unit 51 Imaging element 51a Photoelectric conversion part 52 Board
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
- Lens Barrels (AREA)
Abstract
Provided are an imaging lens that is more compact than conventional types, has excellent correction of various aberrations, has a lens speed of f/2.4 or faster, and has a six-lens structure, and an imaging device that uses the same and a mobile terminal. An imaging lens for forming a subject image on a photoelectric conversion unit of a solid-state imaging device has a lens speed of f/2.4 or faster and comprises, in order from the object side: a first lens having a positive refractive power, a convex surface facing the object side in the vicinity of the optical axis, and a greater curvature on the object side than on the image side; a second lens having a negative refractive power; a third lens having a positive refractive power; a fourth lens; a fifth lens; and a sixth lens having a negative refractive power and a concave surface facing the image side in the vicinity of the optical axis. The image-side surface of the sixth lens is aspherical and has an extreme value at a position other than the point where the surface intersects with the optical axis. The aperture stop of the imaging lens is located further to the object side than the image-side surface of the second lens, and the imaging lens satisfies the following conditional expressions.
40.0 < ν3 < 65.0 (1)
0.05 < d8/f < 0.15 (2)
Where ν3 is the Abbe number of the third lens, d8 is the air space (mm) along the optical axis between the fourth lens and the fifth lens, and f is the overall focal length (mm) of the imaging lens.
Description
本発明は、CCD型イメージセンサあるいはCMOS型イメージセンサ等の固体撮像素子を用いた撮像レンズ、撮像装置、およびこれを備える携帯端末に関する。
The present invention relates to an imaging lens, an imaging device, and a portable terminal including the imaging lens using a solid-state imaging device such as a CCD image sensor or a CMOS image sensor.
近年、CCD型イメージセンサやCMOS型イメージセンサ等の固体撮像素子を用いた撮像装置が搭載された携帯端末の普及の増大に伴い、より高画質の画像が得られるよう、高画素数をもつ撮像素子を使用した撮像装置が搭載されたものが市場に供給されるようになってきた。従来の高画素数をもつ一般的な撮像素子は大型化をともなっていたが、近年、画素の微細化が進み、撮像素子が小型化されるようになってきた。このような微細化された撮像素子に使用される撮像レンズは高い解像力が要求されるが、解像力はFナンバーにより限界があり、Fナンバーの小さい明るいレンズの方が高解像力を得られるため、従来のようにF2.8程度のFナンバーでは十分な性能が得られなくなってきた。そこで、高画素化、微細化、小型化された撮像素子に適した、F2.4以上に明るい撮像レンズが求められるようになってきた。このような用途の撮像レンズとしては、4枚あるいは5枚構成のレンズに比べ大口径比化および高性能化が可能である6枚構成の撮像レンズが提案されている。
In recent years, with the widespread use of mobile terminals equipped with imaging devices using solid-state imaging devices such as CCD image sensors and CMOS image sensors, imaging with a high pixel count so that higher quality images can be obtained A device equipped with an imaging device using an element has been supplied to the market. Conventional general imaging devices having a high number of pixels have been accompanied by an increase in size, but in recent years, the miniaturization of pixels has progressed and the imaging devices have become smaller. An imaging lens used for such a miniaturized imaging device is required to have a high resolving power, but the resolving power is limited by the F number, and a bright lens with a small F number can obtain a high resolving power. As described above, sufficient performance cannot be obtained with an F-number of about F2.8. Accordingly, an imaging lens that is brighter than F2.4, which is suitable for an imaging device with high pixel size, miniaturization, and miniaturization has been demanded. As an imaging lens for such an application, a six-lens imaging lens has been proposed that can have a larger aperture ratio and higher performance than a four- or five-lens configuration.
6枚構成の撮像レンズとして、物体側より順に正の屈折力を有する第1レンズ、負の屈折力を有する第2レンズ、開口絞り、正の屈折力を有する第3レンズ、負の屈折力を有する第4レンズ、正の屈折力を有する第5レンズ、負の屈折力を有する第6レンズで構成された撮像レンズが、例えば特許文献1に開示されている。
As a six-lens imaging lens, a first lens having a positive refractive power, a second lens having a negative refractive power, an aperture stop, a third lens having a positive refractive power, and a negative refractive power in order from the object side. An imaging lens including a fourth lens having a fifth lens having a positive refractive power and a sixth lens having a negative refractive power is disclosed in Patent Document 1, for example.
しかしながら、上記特許文献1に記載の撮像レンズは、開口絞りが第2レンズの後方に配置されており、良好なテレセントリック特性を確保するためには撮像レンズ全長を大きくしなければならず、小型化には不向きである。
However, the imaging lens described in Patent Document 1 has an aperture stop disposed behind the second lens, and in order to ensure good telecentric characteristics, the entire length of the imaging lens must be increased and the size of the imaging lens can be reduced. Not suitable for.
また、特許文献1と似たような構成で、物体側より順に正の屈折力を有する第1レンズ、負の屈折力を有する第2レンズ、負の屈折力を有する第3レンズ、正の屈折力を有する第4レンズ、正の屈折力を有する第5レンズ、負の屈折力を有する第6レンズで構成された撮像レンズが、例えば特許文献2に開示されている。
Further, in a configuration similar to that of Patent Document 1, a first lens having positive refractive power, a second lens having negative refractive power, a third lens having negative refractive power, and positive refraction in order from the object side. For example, Patent Document 2 discloses an imaging lens including a fourth lens having power, a fifth lens having positive refractive power, and a sixth lens having negative refractive power.
しかしながら、上記特許文献2に記載の撮像レンズは、収差補正が不十分で十分な小型化ができているとはいいがたい。また、FナンバーがF2.8と暗い撮像レンズであり、近年の高画素化、高性能化への対応ができていない。
However, it is difficult to say that the imaging lens described in Patent Document 2 is sufficiently small because of insufficient aberration correction. Further, it is a dark imaging lens with an F number of F2.8, and it has not been able to cope with the recent increase in pixels and performance.
本発明は、このような問題点に鑑みてなされたものであり、従来タイプより小型でありながらも、諸収差が良好に補正された、F2.4以上の明るさを持つ6枚構成の撮像レンズ及びそれを用いた撮像装置並びに携帯端末を提供することを目的とする。
The present invention has been made in view of the above problems, and has a six-image structure having a brightness of F2.4 or higher, in which various aberrations are well corrected while being smaller than the conventional type. An object is to provide a lens, an imaging device using the lens, and a portable terminal.
ここで、小型の撮像レンズの尺度であるが、本発明では下式を満たすレベルの小型化を目指している。この範囲を満たすことで、撮像装置全体の小型軽量化が可能となる。
L/2Y<0.90 (13)
ただし、
L:撮像レンズ全系の最も物体側のレンズ面から像側焦点までの光軸上の距離
2Y:固体撮像素子の撮像面対角線長(固体撮像素子の矩形実効画素領域の対角線長) Here, although it is a scale of a small imaging lens, the present invention aims at miniaturization at a level satisfying the following expression. By satisfying this range, the entire imaging apparatus can be reduced in size and weight.
L / 2Y <0.90 (13)
However,
L: Distance on the optical axis from the lens surface closest to the object side to the image-side focal point of the entire imaging lens system 2Y: diagonal length of the imaging surface of the solid-state imaging device (diagonal length of the rectangular effective pixel region of the solid-state imaging device)
L/2Y<0.90 (13)
ただし、
L:撮像レンズ全系の最も物体側のレンズ面から像側焦点までの光軸上の距離
2Y:固体撮像素子の撮像面対角線長(固体撮像素子の矩形実効画素領域の対角線長) Here, although it is a scale of a small imaging lens, the present invention aims at miniaturization at a level satisfying the following expression. By satisfying this range, the entire imaging apparatus can be reduced in size and weight.
L / 2Y <0.90 (13)
However,
L: Distance on the optical axis from the lens surface closest to the object side to the image-side focal point of the entire imaging lens system 2Y: diagonal length of the imaging surface of the solid-state imaging device (diagonal length of the rectangular effective pixel region of the solid-state imaging device)
ここで、像側焦点とは撮像レンズに光軸と平行な平行光線が入射した場合の像点をいう。なお、撮像レンズの最も像側の面と像側焦点位置との間に、光学的ローパスフィルタ、赤外線カットフィルタ、または固体撮像素子パッケージのシールガラス等の平行平板が配置される場合には、平行平板部分は空気換算距離としたうえで上記Lの値を計算するものとする。また、より望ましくは下式の範囲が良い。
L/2Y<0.80 (13)’ Here, the image-side focal point refers to an image point when a parallel light beam parallel to the optical axis is incident on the imaging lens. When a parallel plate such as an optical low-pass filter, an infrared cut filter, or a seal glass of a solid-state image sensor package is disposed between the image-side surface of the imaging lens and the image-side focal position, the imaging lens is parallel. The flat plate portion is calculated as the above L value after the air conversion distance. More preferably, the range of the following formula is good.
L / 2Y <0.80 (13) '
L/2Y<0.80 (13)’ Here, the image-side focal point refers to an image point when a parallel light beam parallel to the optical axis is incident on the imaging lens. When a parallel plate such as an optical low-pass filter, an infrared cut filter, or a seal glass of a solid-state image sensor package is disposed between the image-side surface of the imaging lens and the image-side focal position, the imaging lens is parallel. The flat plate portion is calculated as the above L value after the air conversion distance. More preferably, the range of the following formula is good.
L / 2Y <0.80 (13) '
本発明による撮像レンズは、固体撮像素子の光電変換部に被写体像を結像させるための撮像レンズであって、
F2.4以上の明るさを有し、物体側より順に、正の屈折力を有し光軸近傍で物体側に凸面を向け、像側面よりも物体側面の方が強い曲率を有する第1レンズ、負の屈折力を有する第2レンズ、正の屈折力を有する第3レンズ、第4レンズ、第5レンズ、負の屈折力を有し光軸近傍で像側に凹面を向けた第6レンズ、からなり、
前記第6レンズの像側面は非球面形状であり、光軸との交点以外の位置に極値を有し、 開口絞りが前記第2レンズ像側面よりも物体側に配置され、
以下の条件式を満足することを特徴とする。
40.0<ν3<65.0 (1)
0.05<d8/f<0.15 (2)
ただし、
ν3:前記第3レンズのアッベ数
d8:前記第4レンズと前記第5レンズの光軸上の空気間隔(mm)
f:前記撮像レンズ全系の焦点距離(mm) An imaging lens according to the present invention is an imaging lens for forming a subject image on a photoelectric conversion unit of a solid-state imaging device,
A first lens having a brightness of F2.4 or more, having a positive refractive power in order from the object side, a convex surface facing the object side in the vicinity of the optical axis, and a curvature that is stronger on the object side than on the image side A second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens, a fifth lens, and a sixth lens having a negative refractive power and having a concave surface facing the image side in the vicinity of the optical axis Consists of
The image side surface of the sixth lens has an aspherical shape, has an extreme value at a position other than the intersection with the optical axis, and an aperture stop is disposed closer to the object side than the second lens image side surface.
The following conditional expression is satisfied.
40.0 <ν3 <65.0 (1)
0.05 <d8 / f <0.15 (2)
However,
ν3: Abbe number of the third lens d8: Air interval on the optical axis of the fourth lens and the fifth lens (mm)
f: Focal length (mm) of the entire imaging lens system
F2.4以上の明るさを有し、物体側より順に、正の屈折力を有し光軸近傍で物体側に凸面を向け、像側面よりも物体側面の方が強い曲率を有する第1レンズ、負の屈折力を有する第2レンズ、正の屈折力を有する第3レンズ、第4レンズ、第5レンズ、負の屈折力を有し光軸近傍で像側に凹面を向けた第6レンズ、からなり、
前記第6レンズの像側面は非球面形状であり、光軸との交点以外の位置に極値を有し、 開口絞りが前記第2レンズ像側面よりも物体側に配置され、
以下の条件式を満足することを特徴とする。
40.0<ν3<65.0 (1)
0.05<d8/f<0.15 (2)
ただし、
ν3:前記第3レンズのアッベ数
d8:前記第4レンズと前記第5レンズの光軸上の空気間隔(mm)
f:前記撮像レンズ全系の焦点距離(mm) An imaging lens according to the present invention is an imaging lens for forming a subject image on a photoelectric conversion unit of a solid-state imaging device,
A first lens having a brightness of F2.4 or more, having a positive refractive power in order from the object side, a convex surface facing the object side in the vicinity of the optical axis, and a curvature that is stronger on the object side than on the image side A second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens, a fifth lens, and a sixth lens having a negative refractive power and having a concave surface facing the image side in the vicinity of the optical axis Consists of
The image side surface of the sixth lens has an aspherical shape, has an extreme value at a position other than the intersection with the optical axis, and an aperture stop is disposed closer to the object side than the second lens image side surface.
The following conditional expression is satisfied.
40.0 <ν3 <65.0 (1)
0.05 <d8 / f <0.15 (2)
However,
ν3: Abbe number of the third lens d8: Air interval on the optical axis of the fourth lens and the fifth lens (mm)
f: Focal length (mm) of the entire imaging lens system
小型で収差の良好に補正された撮像レンズを得るための本発明の基本構成は、物体側より順に、正の屈折力を有し光軸近傍で物体側に凸面を向け、像側面よりも物体側面の方が強い曲率を有する第1レンズ、負の屈折力を有する第2レンズ、正の屈折力を有する第3レンズ、第4レンズ、第5レンズ、負の屈折力を有し光軸近傍で像側に凹面を向けた第6レンズ、からなる。物体側より順に、第1レンズ、第2レンズ、第3レンズ、第4レンズ、第5レンズからなる正レンズ群と、負の第6レンズを配置する、いわゆるテレフォトタイプのこのレンズ構成は、撮像レンズ全長の小型化には有利な構成である。
The basic configuration of the present invention for obtaining a compact imaging lens with good aberration correction is, in order from the object side, having a positive refractive power, with the convex surface facing the object side in the vicinity of the optical axis, and the object side rather than the image side surface. The first lens having a stronger curvature on the side surface, the second lens having a negative refractive power, the third lens having a positive refractive power, the fourth lens, the fifth lens, and the vicinity of the optical axis having a negative refractive power And a sixth lens having a concave surface facing the image side. This lens configuration of a so-called telephoto type in which a positive lens group including a first lens, a second lens, a third lens, a fourth lens, and a fifth lens and a negative sixth lens are arranged in this order from the object side. This is an advantageous configuration for reducing the overall length of the imaging lens.
また、6枚構成のうち2枚以上を負レンズとすることで、発散作用を有する面を多くしてペッツバール和の補正を容易とし、画面周辺部まで良好な結像性能を確保した撮像レンズを得ることが可能となる。さらに、第1レンズの物体側面を凸面とし、像側面よりも物体側面の方が強い曲率を有する形状することで、撮像レンズ全系の合成主点位置をより物体側へ寄せることができ、撮像レンズ全長の小型化に有利となる。
In addition, by using two or more negative lenses in the six-lens configuration, it is possible to easily correct the Petzval sum by increasing the surface having a diverging action, and to secure an excellent imaging performance up to the periphery of the screen. Can be obtained. Furthermore, the object side surface of the first lens is convex, and the object side surface has a stronger curvature than the image side surface, so that the combined principal point position of the entire imaging lens system can be moved closer to the object side. This is advantageous for reducing the overall length of the lens.
また、第3レンズを正レンズとすることで、第1レンズから第3レンズまでを正負正の順に配置する、所謂トリプレットタイプとすることで、球面収差や像面湾曲を良好に補正することができる。
In addition, by using a so-called triplet type in which the third lens is a positive lens and the first lens to the third lens are arranged in order of positive and negative, it is possible to satisfactorily correct spherical aberration and curvature of field. it can.
また、最も像側に配置された第6レンズの像側面を非球面とすることで、画面周辺部での諸収差を良好に補正することができる。さらに、光軸との交点以外の位置に極値を持つ非球面形状とすることで、像側光束のテレセントリック特性が確保しやすくなる。ここで、「極値」とは有効半径内でのレンズ断面形状の曲線において、非球面頂点の接平面が光軸と垂直な平面となるような非球面上の点のことである。
Further, by making the image side surface of the sixth lens arranged closest to the image side aspherical, various aberrations at the peripheral portion of the screen can be corrected satisfactorily. Furthermore, the aspherical shape having an extreme value at a position other than the intersection with the optical axis makes it easy to ensure the telecentric characteristics of the image-side light beam. Here, the “extreme value” is a point on the aspheric surface where the tangent plane of the aspheric vertex is a plane perpendicular to the optical axis in the curve of the lens cross-sectional shape within the effective radius.
また、開口絞りを第2レンズ像側面よりも物体側に配置することで、撮像レンズ全長の小型化と良好なテレセントリック特性の両立を行うことができる。さらに、撮像レンズのFナンバーをF2.4以上(F値が小さい)の明るさとすることで、近年の高性能化に対応できる撮像レンズを得ることができる。
Further, by arranging the aperture stop closer to the object side than the side surface of the second lens image, it is possible to achieve both a reduction in the overall length of the imaging lens and good telecentric characteristics. Furthermore, by setting the F-number of the imaging lens to a brightness of F2.4 or higher (F value is small), an imaging lens that can cope with recent high performance can be obtained.
条件式(1)は第3レンズの材料のアッベ数を規定し、撮像レンズ全体の色収差をバランスよく補正するための条件式である。第3レンズを条件式(1)の範囲の材料で構成することにより、軸上色収差と倍率色収差をバランス良く補正することができるようになる。また、より望ましくは下式の範囲がよい。
45.0<ν3<60.0 (1)’ Conditional expression (1) defines the Abbe number of the material of the third lens and is a conditional expression for correcting the chromatic aberration of the entire imaging lens in a well-balanced manner. By configuring the third lens with a material in the range of conditional expression (1), it is possible to correct axial chromatic aberration and lateral chromatic aberration with a good balance. More preferably, the range of the following formula is good.
45.0 <ν3 <60.0 (1) ′
45.0<ν3<60.0 (1)’ Conditional expression (1) defines the Abbe number of the material of the third lens and is a conditional expression for correcting the chromatic aberration of the entire imaging lens in a well-balanced manner. By configuring the third lens with a material in the range of conditional expression (1), it is possible to correct axial chromatic aberration and lateral chromatic aberration with a good balance. More preferably, the range of the following formula is good.
45.0 <ν3 <60.0 (1) ′
条件式(2)は第4レンズと第5レンズの光軸上の空気間隔を適切に設定するための条件式である。条件式(2)の値が下限を上回ることで、第4レンズと第5レンズが近づきすぎることがなくなり、周辺部の非球面量が大きな第4レンズと第5レンズが近接することによる、レンズ偏芯発生時の性能劣化を小さくすることができる。一方、条件式(2)の値が上限を下回ることで、第3レンズと第4レンズを適度に離間させることができるので、第4レンズを通過する各像高の光束を個別に収差補正しやすくすることができるようになる。特にF2.4以上の明るさを有するレンズ系では、周辺性能を確保するのが難しくなってくるため、各像高の光束を個別に収差補正することが重要となってくる。また、より望ましくは下式の範囲がよい。
0.05<d8/f<0.13 (2)’ Conditional expression (2) is a conditional expression for appropriately setting the air space on the optical axis of the fourth lens and the fifth lens. When the value of the conditional expression (2) exceeds the lower limit, the fourth lens and the fifth lens are not brought too close to each other, and the fourth lens and the fifth lens having a large aspheric amount in the peripheral portion are close to each other. It is possible to reduce performance deterioration when eccentricity occurs. On the other hand, since the value of conditional expression (2) is less than the upper limit, the third lens and the fourth lens can be appropriately separated, and thus the light flux of each image height passing through the fourth lens is individually corrected for aberration. You can make it easier. In particular, in a lens system having a brightness of F2.4 or higher, it is difficult to ensure the peripheral performance, so it is important to individually correct the aberration of each luminous flux at each image height. More preferably, the range of the following formula is good.
0.05 <d8 / f <0.13 (2) ′
0.05<d8/f<0.13 (2)’ Conditional expression (2) is a conditional expression for appropriately setting the air space on the optical axis of the fourth lens and the fifth lens. When the value of the conditional expression (2) exceeds the lower limit, the fourth lens and the fifth lens are not brought too close to each other, and the fourth lens and the fifth lens having a large aspheric amount in the peripheral portion are close to each other. It is possible to reduce performance deterioration when eccentricity occurs. On the other hand, since the value of conditional expression (2) is less than the upper limit, the third lens and the fourth lens can be appropriately separated, and thus the light flux of each image height passing through the fourth lens is individually corrected for aberration. You can make it easier. In particular, in a lens system having a brightness of F2.4 or higher, it is difficult to ensure the peripheral performance, so it is important to individually correct the aberration of each luminous flux at each image height. More preferably, the range of the following formula is good.
0.05 <d8 / f <0.13 (2) ′
本発明による撮像装置は、上記撮像レンズを有することを特徴とする。
An imaging apparatus according to the present invention includes the imaging lens.
本発明による携帯端末は、上記撮像装置を有することを特徴とする。
A portable terminal according to the present invention includes the above-described imaging device.
本発明によれば、従来タイプより小型でありながらも、諸収差が良好に補正された、F2.4以上の明るさを持つ6枚構成の撮像レンズ及びそれを用いた撮像装置並びに携帯端末を提供することができる。
According to the present invention, there are provided a six-lens imaging lens having a brightness of F2.4 or more, in which various aberrations are favorably corrected while being smaller than the conventional type, and an imaging device and a portable terminal using the imaging lens. Can be provided.
以下、本発明の実施形態を、図面を参照して説明する。図1は、本実施形態にかかる撮像ユニット50の斜視図であり、図2は、撮像ユニット50の撮像レンズの光軸に沿った断面を模式的に示した図である。
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of the imaging unit 50 according to the present embodiment, and FIG. 2 is a diagram schematically showing a cross section along the optical axis of the imaging lens of the imaging unit 50.
図1、2に示すように、撮像ユニット50は、光電変換部51aを有する固体撮像素子としてのCMOS型撮像素子51と、この撮像素子51の光電変換部51aに被写体像を撮像させる撮像レンズ10と、撮像レンズ10を保持する鏡筒53と、撮像レンズ10と撮像素子51の間に配置された平行平板状の光学フィルタ54と、撮像レンズ10を駆動するアクチュエータ55と、撮像素子51を実装した基板52と、撮像レンズ10及びアクチュエータ55を保持する台座部材57とを有する。
As shown in FIGS. 1 and 2, the imaging unit 50 includes a CMOS type imaging device 51 as a solid-state imaging device having a photoelectric conversion unit 51 a and an imaging lens 10 that causes the photoelectric conversion unit 51 a of the imaging device 51 to image a subject image. A lens barrel 53 that holds the imaging lens 10, a parallel plate-shaped optical filter 54 disposed between the imaging lens 10 and the imaging element 51, an actuator 55 that drives the imaging lens 10, and the imaging element 51 are mounted. And the base member 57 that holds the imaging lens 10 and the actuator 55.
図2に示すように、撮像素子51は、その受光側の平面の中央部に、画素(光電変換素子)が2次元的に配置された、受光部としての光電変換部51aが形成されており、その周囲には信号処理回路(不図示)が形成されている。かかる信号処理回路は、各画素を順次駆動し信号電荷を得る駆動回路部と、各信号電荷をデジタル信号に変換するA/D変換部と、このデジタル信号を用いて画像信号出力を形成する信号処理部等から構成されている。また、撮像素子51の受光側の平面の外縁近傍には、多数のパッド(図示略)が配置されており、ワイヤ51bを介して基板52に接続されている。撮像素子51は、光電変換部51aからの信号電荷をデジタルYUV信号等の画像信号等に変換し、ワイヤ(不図示)を介して基板52上の所定の回路に出力する。ここで、Yは輝度信号、U(=R-Y)は赤と輝度信号との色差信号、V(=B-Y)は青と輝度信号との色差信号である。なお、撮像素子は上記CMOS型のイメージセンサに限定されるものではなく、CCD等の他のものを使用しても良い。
As shown in FIG. 2, the imaging element 51 has a photoelectric conversion part 51 a as a light receiving part in which pixels (photoelectric conversion elements) are two-dimensionally arranged at the center of the plane on the light receiving side. A signal processing circuit (not shown) is formed around the periphery. Such a signal processing circuit includes a drive circuit unit that sequentially drives each pixel to obtain a signal charge, an A / D conversion unit that converts each signal charge into a digital signal, and a signal that forms an image signal output using the digital signal. It consists of a processing unit and the like. In addition, a large number of pads (not shown) are arranged in the vicinity of the outer edge of the plane on the light receiving side of the image sensor 51, and are connected to the substrate 52 via wires 51b. The image sensor 51 converts the signal charge from the photoelectric conversion unit 51a into an image signal such as a digital YUV signal, and outputs it to a predetermined circuit on the substrate 52 via a wire (not shown). Here, Y is a luminance signal, U (= RY) is a color difference signal between red and the luminance signal, and V (= BY) is a color difference signal between blue and the luminance signal. Note that the image sensor is not limited to the above CMOS image sensor, and other devices such as a CCD may be used.
樹脂により一体成形された台座部材57は、全体的に直方体の筐体状であり、撮像素子51を囲うように設けられた4つの側壁部57aと、その上端に交差する上壁部57bとを有する。上壁部57bの中央には、矩形状の開口57cが形成されており、かかる開口57cを覆うようにして上壁部57bに光学フィルタ54が取り付けられている。基板52は、その上面で撮像素子51及び台座部材57を支持している。
The pedestal member 57 integrally formed of resin has a generally rectangular parallelepiped housing shape, and includes four side wall portions 57a provided so as to surround the image sensor 51 and an upper wall portion 57b intersecting with the upper end thereof. Have. A rectangular opening 57c is formed at the center of the upper wall portion 57b, and the optical filter 54 is attached to the upper wall portion 57b so as to cover the opening 57c. The substrate 52 supports the imaging element 51 and the pedestal member 57 on its upper surface.
アクチュエータ55は、鏡筒53にねじ込まれた筒状のキャリヤ55aと、キャリヤ55aに取り付けられ光軸方向に延在するコイル55bと、コイル55bに対抗して配置された磁石55cと、磁石55cを支持した筐体状のヨーク55dとからなっている。コイル55bは、不図示の配線を介して外部回路に接続されている。ヨーク55dの下端は、台座部材57の上壁部57b上に接着されている。また、キャリヤ55aは不図示の弾性部材により撮像素子51方向に付勢されている。
The actuator 55 includes a cylindrical carrier 55a screwed into the lens barrel 53, a coil 55b attached to the carrier 55a and extending in the optical axis direction, a magnet 55c arranged to oppose the coil 55b, and a magnet 55c. It consists of a supported housing-like yoke 55d. The coil 55b is connected to an external circuit via a wiring (not shown). The lower end of the yoke 55d is bonded onto the upper wall portion 57b of the base member 57. The carrier 55a is urged toward the image sensor 51 by an elastic member (not shown).
鏡筒53の物体側に、小開口(ここでは開口絞り)Sが設けられたフランジ部53aが形成されている。
A flange portion 53 a provided with a small opening (here, an aperture stop) S is formed on the object side of the lens barrel 53.
鏡筒53内に配置された撮像レンズ10は、物体側より順に、正の屈折力を有し光軸近傍で物体側に凸面を向け、像側面よりも物体側面の方が強い曲率(小さい曲率半径)を有する第1レンズL1、負の屈折力を有する第2レンズL2、正の屈折力を有する第3レンズL3、第4レンズL4、第5レンズL5、負の屈折力を有し光軸近傍で像側に凹面を向けた第6レンズL6、からなる。第1レンズL1~L5までは、それぞれフランジ同士を直接突き合わせて光軸方向間隔を調整しており、突き合わせたフランジの内側に遮光絞りSH1~SH4を設けている。第5レンズL5と第6レンズL6は、遮光絞りSH5をフランジ間に介在させて光軸方向間隔を調整している。
The imaging lens 10 disposed in the lens barrel 53 has, in order from the object side, a positive refractive power, a convex surface facing the object side in the vicinity of the optical axis, and a curvature (small curvature) that is stronger on the object side than on the image side. A first lens L1 having a radius), a second lens L2 having a negative refractive power, a third lens L3 having a positive refractive power, a fourth lens L4, a fifth lens L5, and an optical axis having a negative refractive power. The sixth lens L6 has a concave surface facing the image side in the vicinity. For the first lenses L1 to L5, the flanges are directly butted to adjust the interval in the optical axis direction, and light-shielding stops SH1 to SH4 are provided inside the butted flanges. The fifth lens L5 and the sixth lens L6 adjust the distance in the optical axis direction by interposing a light-shielding stop SH5 between the flanges.
第2レンズL2の像側面は光軸から離れるにしたがって単調に像側へ倒れる形状をしている。第3レンズL3は周辺部で物体側に倒れるような形状をしている。第6レンズL6の像側面は非球面形状であり、光軸との交点以外の位置に極値P(片側のみ図示)を有している。開口絞りSが第2レンズL2の像側面よりも物体側に配置され、ここでは第1レンズL1の物体側に設けられている。又、撮像レンズ10は、以下の条件式を満足する。
40.0<ν3<65.0 (1)
0.05<d8/f<0.15 (2)
ただし、
ν3:第3レンズL3のアッベ数
d8:第4レンズL4と第5レンズL5の光軸上の空気間隔(mm)
f:撮像レンズ10全系の焦点距離(mm) The image side surface of the second lens L2 has a shape that monotonously falls toward the image side as the distance from the optical axis increases. The third lens L3 has a shape that falls to the object side at the periphery. The image side surface of the sixth lens L6 has an aspheric shape, and has an extreme value P (only one side is shown) at a position other than the intersection with the optical axis. The aperture stop S is disposed on the object side of the image side surface of the second lens L2, and is provided on the object side of the first lens L1 here. Theimaging lens 10 satisfies the following conditional expression.
40.0 <ν3 <65.0 (1)
0.05 <d8 / f <0.15 (2)
However,
ν3: Abbe number of the third lens L3 d8: Air interval on the optical axis of the fourth lens L4 and the fifth lens L5 (mm)
f: Focal length (mm) of theentire imaging lens 10 system
40.0<ν3<65.0 (1)
0.05<d8/f<0.15 (2)
ただし、
ν3:第3レンズL3のアッベ数
d8:第4レンズL4と第5レンズL5の光軸上の空気間隔(mm)
f:撮像レンズ10全系の焦点距離(mm) The image side surface of the second lens L2 has a shape that monotonously falls toward the image side as the distance from the optical axis increases. The third lens L3 has a shape that falls to the object side at the periphery. The image side surface of the sixth lens L6 has an aspheric shape, and has an extreme value P (only one side is shown) at a position other than the intersection with the optical axis. The aperture stop S is disposed on the object side of the image side surface of the second lens L2, and is provided on the object side of the first lens L1 here. The
40.0 <ν3 <65.0 (1)
0.05 <d8 / f <0.15 (2)
However,
ν3: Abbe number of the third lens L3 d8: Air interval on the optical axis of the fourth lens L4 and the fifth lens L5 (mm)
f: Focal length (mm) of the
上述した撮像ユニット50の動作について説明する。図3(a)(b)は、撮像ユニット50を携帯端末としてのスマートフォン100に装備した状態を示す図である。また、図4はスマートフォン100の制御ブロック図である。
The operation of the imaging unit 50 described above will be described. FIGS. 3A and 3B are diagrams illustrating a state in which the imaging unit 50 is mounted on a smartphone 100 as a mobile terminal. FIG. 4 is a control block diagram of the smartphone 100.
撮像ユニット50は、例えば、鏡筒53の物体側端面がスマートフォン100の背面(図3(b)参照)に設けられ、タッチパネル70の裏側に相当する位置に配設される。
In the imaging unit 50, for example, the object-side end surface of the lens barrel 53 is provided on the back surface of the smartphone 100 (see FIG. 3B), and is disposed at a position corresponding to the back side of the touch panel 70.
撮像ユニット50は、スマートフォン100の制御部101と接続され、輝度信号や色差信号等の画像信号を制御部101側に出力する。
The imaging unit 50 is connected to the control unit 101 of the smartphone 100 and outputs an image signal such as a luminance signal or a color difference signal to the control unit 101 side.
一方、スマートフォン100は、図4に示すように、各部を統括的に制御すると共に、各処理に応じたプログラムを実行する制御部(CPU)101と、番号等をキーにより指示入力するための入力部60と、所定のデータの他に撮像した映像等を表示する液晶表示部70と、外部サーバとの間の各種情報通信を実現するための無線通信部80と、携帯電話機100のシステムプログラムや各種処理プログラム及び端末ID等の必要な諸データを記憶している記憶部(ROM)91と、制御部101によって実行される各種処理プログラムやデータ、若しくは処理データ、或いは撮像ユニット50により得られた撮像データ等を一時的に格納する作業領域として用いられる及び一時記憶部(RAM)92とを備えている。
On the other hand, as shown in FIG. 4, the smartphone 100 performs overall control of each unit, and also inputs a control unit (CPU) 101 that executes a program corresponding to each process, and inputs a number and the like with a key. Unit 60, a liquid crystal display unit 70 for displaying captured images in addition to predetermined data, a wireless communication unit 80 for realizing various information communication with an external server, a system program for mobile phone 100, Obtained by a storage unit (ROM) 91 storing various processing programs and necessary data such as a terminal ID, and various processing programs and data executed by the control unit 101, or processing data, or the imaging unit 50 And a temporary storage unit (RAM) 92 that is used as a work area for temporarily storing imaging data and the like.
スマートフォン100は、入力部60の操作によって動作し、タッチパネル(表示部)70に表示されたアイコン71等をタッチすることで、撮像ユニット50を動作させて撮像を行うことができる。このとき、アクチュエータ55を駆動することで、撮像レンズ10とともに鏡筒53を光軸方向に移動させフォーカシングを行うことができる。撮像ユニット50から入力された画像信号は、制御部101で画像処理を施され、上記スマートフォン100の制御系により、記憶部92に記憶されたり、或いはタッチパネル70で表示され、さらには、無線通信部80を介して映像情報として外部に送信される。
The smartphone 100 operates by operating the input unit 60, and touches an icon 71 or the like displayed on the touch panel (display unit) 70 to operate the imaging unit 50 to perform imaging. At this time, by driving the actuator 55, the lens barrel 53 can be moved together with the imaging lens 10 in the optical axis direction to perform focusing. The image signal input from the imaging unit 50 is subjected to image processing by the control unit 101, stored in the storage unit 92 or displayed on the touch panel 70 by the control system of the smartphone 100, and further, a wireless communication unit It is transmitted to the outside as video information via 80.
[実施例]
[Example]
以下、本発明の撮像レンズの実施例を示す。各実施例に使用する記号は下記の通りである。長さの単位はmmである。
f:撮像レンズ全系の焦点距離
fB:バックフォーカス
F:Fナンバー
2Y:固体撮像素子の撮像面対角線長
ENTP:入射瞳位置(第1面から入射瞳位置までの距離)
EXTP:射出瞳位置(撮像面から射出瞳位置までの距離)
H1:前側主点位置(第1面から前側主点位置までの距離)
H2:後側主点位置(最終面から後側主点位置までの距離)
R:曲率半径
D:軸上面間隔
Nd:レンズ材料のd線に対する屈折率
νd:レンズ材料のアッベ数 Examples of the imaging lens of the present invention will be shown below. Symbols used in each example are as follows. The unit of length is mm.
f: Focal length of the entire imaging lens fB: Back focus F: F number 2Y: Diagonal length of imaging surface of solid-state imaging device
ENTP: Entrance pupil position (distance from first surface to entrance pupil position)
EXTP: Exit pupil position (distance from imaging surface to exit pupil position)
H1: Front principal point position (distance from the first surface to the front principal point position)
H2: Rear principal point position (distance from the final surface to the rear principal point position)
R: radius of curvature D: axial distance Nd: refractive index νd of lens material with respect to d-line: Abbe number of lens material
f:撮像レンズ全系の焦点距離
fB:バックフォーカス
F:Fナンバー
2Y:固体撮像素子の撮像面対角線長
ENTP:入射瞳位置(第1面から入射瞳位置までの距離)
EXTP:射出瞳位置(撮像面から射出瞳位置までの距離)
H1:前側主点位置(第1面から前側主点位置までの距離)
H2:後側主点位置(最終面から後側主点位置までの距離)
R:曲率半径
D:軸上面間隔
Nd:レンズ材料のd線に対する屈折率
νd:レンズ材料のアッベ数 Examples of the imaging lens of the present invention will be shown below. Symbols used in each example are as follows. The unit of length is mm.
f: Focal length of the entire imaging lens fB: Back focus F: F number 2Y: Diagonal length of imaging surface of solid-state imaging device
ENTP: Entrance pupil position (distance from first surface to entrance pupil position)
EXTP: Exit pupil position (distance from imaging surface to exit pupil position)
H1: Front principal point position (distance from the first surface to the front principal point position)
H2: Rear principal point position (distance from the final surface to the rear principal point position)
R: radius of curvature D: axial distance Nd: refractive index νd of lens material with respect to d-line: Abbe number of lens material
各実施例において、各面番号の後に「*」が記載されている面が非球面形状を有する面であり、非球面の形状は、面の頂点を原点とし、光軸方向にX軸をとり、光軸と垂直方向の高さをhとして以下の「数1」で表す。
In each embodiment, the surface described with “*” after each surface number is a surface having an aspheric shape, and the shape of the aspheric surface has the vertex of the surface as the origin and the X axis in the optical axis direction. The height in the direction perpendicular to the optical axis is h, and is expressed by the following “Equation 1”.
Ai:i次の非球面係数
R :曲率半径
K :円錐定数
Ai: i-order aspheric coefficient R: radius of curvature K: conic constant
なお、特許請求の範囲及び実施例に記載の近軸曲率半径の意味合いについて、実際のレンズ測定の場面においては、レンズ中央近傍(具体的には、レンズ外径に対して10%以内の中央領域)での形状測定値を最小自乗法でフィッティングした際の近似曲率半径を近軸曲率半径であるとみなすことができる。また、例えば2次の非球面係数を使用した場合には、非球面定義式の基準曲率半径に2次の非球面係数も勘案した曲率半径を近軸曲率半径とみなすことができる。(例えば参考文献として、松居吉哉著「レンズ設計法」(共立出版株式会社)のP41~42を参照のこと)
Regarding the meaning of the paraxial radius of curvature described in the claims and the examples, in the actual lens measurement scene, in the vicinity of the center of the lens (specifically, the central region within 10% of the lens outer diameter) ) Can be regarded as the paraxial curvature radius when fitting the shape measurement value in the least square method. For example, when a secondary aspherical coefficient is used, a radius of curvature that takes into account the secondary aspherical coefficient in the reference curvature radius of the aspherical definition formula can be regarded as the paraxial curvature radius. (For example, refer to pages 41 to 42 of “Lens Design Method” by Yoshiya Matsui (Kyoritsu Publishing Co., Ltd.) for reference)
(実施例1)
実施例1のレンズデータを表1に示す。なお、これ以降(表のレンズデータを含む)において、10のべき乗数(たとえば2.5×10-02)を、E(たとえば2.5E-02)を用いて表すものとする。 (Example 1)
Table 1 shows lens data of Example 1. In the following (including the lens data in the table), a power of 10 (for example, 2.5 × 10 −02 ) is expressed using E (for example, 2.5E-02).
実施例1のレンズデータを表1に示す。なお、これ以降(表のレンズデータを含む)において、10のべき乗数(たとえば2.5×10-02)を、E(たとえば2.5E-02)を用いて表すものとする。 (Example 1)
Table 1 shows lens data of Example 1. In the following (including the lens data in the table), a power of 10 (for example, 2.5 × 10 −02 ) is expressed using E (for example, 2.5E-02).
[表1]
実施例1
f=3.68mm fB=0.38mm F=2.08 2Y=5.842mm
ENTP=0mm EXTP=-2.06mm H1=-1.87mm H2=-3.3mm
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1(絞り) ∞ -0.24 0.88
2* 1.483 0.47 1.54470 56.2 0.91
3* 171.642 0.09 0.91
4* 35.177 0.15 1.63470 23.9 0.91
5* 2.761 0.39 0.89
6* 11.100 0.39 1.54470 56.2 0.97
7* -14.430 0.13 1.09
8* -5.348 0.20 1.63470 23.9 1.12
9* -11.205 0.40 1.24
10* -22.120 0.54 1.54470 56.2 1.44
11* -1.201 0.42 1.71
12* -2.732 0.31 1.54470 56.2 2.36
13* 1.511 0.40 2.56
14 ∞ 0.11 1.51630 64.1 3.00
15 ∞ 3.00
非球面係数
第2面 第8面
K= 0.11064E+00 K= 0.0
A4= 0.77619E-02 A4= -0.83830E-01
A6= -0.14994E-02 A6= -0.72201E-02
A8= -0.14046E-02 A8= -0.12901E-02
A10= 0.18350E-01 A10= -0.69251E-02
A12= 0.49521E-02 A12= 0.52899E-02
A14= -0.29657E-01
第3面 第9面
K= -0.80000E+02 K= 0.33633E+02
A4= 0.22449E-01 A3= 0.12200E-01
A6= 0.10582E-01 A4= -0.12793E+00
A8= 0.17426E-01 A5= 0.28268E-01
A10= -0.33613E-01 A6= -0.64956E-02
A12= -0.33805E-01 A8= -0.76012E-02
A14= 0.18767E-01 A10= 0.10413E-01
A12= -0.15621E-02
A14= 0.34072E-02
第4面 第10面
K= -0.80000E+02 K= -0.75104E+02
A4= -0.16460E-01 A3= -0.81216E-01
A6= 0.13414E+00 A4= 0.15296E+00
A8= -0.70650E-01 A5= -0.14967E+00
A10= -0.51751E-01 A6= -0.85533E-02
A12= 0.18357E-01 A8= 0.37480E-01
A14= 0.30319E-01 A10= -0.14685E-01
A12= -0.76921E-02
A14= 0.40260E-02
第5面 第11面
K= -0.11872E+02 K= -0.55040E+01
A3= -0.25270E-01 A3= -0.72660E-01
A4= 0.99110E-01 A4= -0.22212E-01
A5= -0.10822E-01 A5= 0.23796E-01
A6= 0.54576E-01 A6= 0.22744E-01
A8= 0.20300E-01 A8= -0.14054E-01
A10= -0.20055E-02 A10= 0.15688E-02
A12= -0.29972E-01 A12= 0.13325E-02
A14= 0.77829E-01 A14= -0.37055E-03
第6面 第12面
K= 0.74735E+02 K= -0.28647E+01
A3= 0.96936E-02 A3= -0.84014E-01
A4= -0.79431E-01 A4= 0.58462E-02
A5= -0.88704E-01 A5= 0.81861E-02
A6= 0.34259E-01 A6= 0.72514E-02
A8= 0.11055E-04 A8= -0.26347E-03
A10= -0.39325E-01 A10= -0.16534E-03
A12= -0.21838E-03 A12= 0.50431E-05
A14= 0.20072E-01 A14= 0.12351E-05
第7面 第13面
K= 0.0 K= -0.98202E+01
A4= -0.43177E-01 A3= -0.96722E-01
A6= -0.70355E-01 A4= 0.14664E-01
A8= -0.12578E-01 A5= 0.56974E-02
A10= 0.22162E-01 A6= -0.81339E-03
A12= -0.25624E-01 A8= -0.99909E-03
A10= 0.74992E-04
A12= 0.98469E-06
A14= 0.40160E-06
単レンズデータ
レンズ 始面 焦点距離(mm)
1 2 2.743
2 4 -4.728
3 6 11.580
4 8 -16.335
5 10 2.310
6 12 -1.741
[Table 1]
Example 1
f = 3.68mm fB = 0.38mm F = 2.08 2Y = 5.842mm
ENTP = 0mm EXTP = -2.06mm H1 = -1.87mm H2 = -3.3mm
Surface number R (mm) D (mm) Nd νd Effective radius (mm)
1 (Aperture) ∞ -0.24 0.88
2 * 1.483 0.47 1.54470 56.2 0.91
3 * 171.642 0.09 0.91
4 * 35.177 0.15 1.63470 23.9 0.91
5 * 2.761 0.39 0.89
6 * 11.100 0.39 1.54470 56.2 0.97
7 * -14.430 0.13 1.09
8 * -5.348 0.20 1.63470 23.9 1.12
9 * -11.205 0.40 1.24
10 * -22.120 0.54 1.54470 56.2 1.44
11 * -1.201 0.42 1.71
12 * -2.732 0.31 1.54470 56.2 2.36
13 * 1.511 0.40 2.56
14 ∞ 0.11 1.51630 64.1 3.00
15 ∞ 3.00
Aspheric coefficient
2nd side 8th side
K = 0.11064E + 00 K = 0.0
A4 = 0.77619E-02 A4 = -0.83830E-01
A6 = -0.14994E-02 A6 = -0.72201E-02
A8 = -0.14046E-02 A8 = -0.12901E-02
A10 = 0.18350E-01 A10 = -0.69251E-02
A12 = 0.49521E-02 A12 = 0.52899E-02
A14 = -0.29657E-01
3rd side 9th side
K = -0.80000E + 02 K = 0.33633E + 02
A4 = 0.22449E-01 A3 = 0.12200E-01
A6 = 0.10582E-01 A4 = -0.12793E + 00
A8 = 0.17426E-01 A5 = 0.28268E-01
A10 = -0.33613E-01 A6 = -0.64956E-02
A12 = -0.33805E-01 A8 = -0.76012E-02
A14 = 0.18767E-01 A10 = 0.10413E-01
A12 = -0.15621E-02
A14 = 0.34072E-02
4th page 10th page
K = -0.80000E + 02 K = -0.75104E + 02
A4 = -0.16460E-01 A3 = -0.81216E-01
A6 = 0.13414E + 00 A4 = 0.15296E + 00
A8 = -0.70650E-01 A5 = -0.14967E + 00
A10 = -0.51751E-01 A6 = -0.85533E-02
A12 = 0.18357E-01 A8 = 0.37480E-01
A14 = 0.30319E-01 A10 = -0.14685E-01
A12 = -0.76921E-02
A14 = 0.40260E-02
5th surface 11th surface
K = -0.11872E + 02 K = -0.55040E + 01
A3 = -0.25270E-01 A3 = -0.72660E-01
A4 = 0.99110E-01 A4 = -0.22212E-01
A5 = -0.10822E-01 A5 = 0.23796E-01
A6 = 0.54576E-01 A6 = 0.22744E-01
A8 = 0.20300E-01 A8 = -0.14054E-01
A10 = -0.20055E-02 A10 = 0.15688E-02
A12 = -0.29972E-01 A12 = 0.13325E-02
A14 = 0.77829E-01 A14 = -0.37055E-03
6th page 12th page
K = 0.74735E + 02 K = -0.28647E + 01
A3 = 0.96936E-02 A3 = -0.84014E-01
A4 = -0.79431E-01 A4 = 0.58462E-02
A5 = -0.88704E-01 A5 = 0.81861E-02
A6 = 0.34259E-01 A6 = 0.72514E-02
A8 = 0.11055E-04 A8 = -0.26347E-03
A10 = -0.39325E-01 A10 = -0.16534E-03
A12 = -0.21838E-03 A12 = 0.50431E-05
A14 = 0.20072E-01 A14 = 0.12351E-05
7th 13th
K = 0.0 K = -0.98202E + 01
A4 = -0.43177E-01 A3 = -0.96722E-01
A6 = -0.70355E-01 A4 = 0.14664E-01
A8 = -0.12578E-01 A5 = 0.56974E-02
A10 = 0.22162E-01 A6 = -0.81339E-03
A12 = -0.25624E-01 A8 = -0.99909E-03
A10 = 0.74992E-04
A12 = 0.98469E-06
A14 = 0.40160E-06
Single lens data
Lens Start surface Focal length (mm)
1 2 2.743
2 4 -4.728
3 6 11.580
4 8 -16.335
5 10 2.310
6 12 -1.741
実施例1
f=3.68mm fB=0.38mm F=2.08 2Y=5.842mm
ENTP=0mm EXTP=-2.06mm H1=-1.87mm H2=-3.3mm
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1(絞り) ∞ -0.24 0.88
2* 1.483 0.47 1.54470 56.2 0.91
3* 171.642 0.09 0.91
4* 35.177 0.15 1.63470 23.9 0.91
5* 2.761 0.39 0.89
6* 11.100 0.39 1.54470 56.2 0.97
7* -14.430 0.13 1.09
8* -5.348 0.20 1.63470 23.9 1.12
9* -11.205 0.40 1.24
10* -22.120 0.54 1.54470 56.2 1.44
11* -1.201 0.42 1.71
12* -2.732 0.31 1.54470 56.2 2.36
13* 1.511 0.40 2.56
14 ∞ 0.11 1.51630 64.1 3.00
15 ∞ 3.00
非球面係数
第2面 第8面
K= 0.11064E+00 K= 0.0
A4= 0.77619E-02 A4= -0.83830E-01
A6= -0.14994E-02 A6= -0.72201E-02
A8= -0.14046E-02 A8= -0.12901E-02
A10= 0.18350E-01 A10= -0.69251E-02
A12= 0.49521E-02 A12= 0.52899E-02
A14= -0.29657E-01
第3面 第9面
K= -0.80000E+02 K= 0.33633E+02
A4= 0.22449E-01 A3= 0.12200E-01
A6= 0.10582E-01 A4= -0.12793E+00
A8= 0.17426E-01 A5= 0.28268E-01
A10= -0.33613E-01 A6= -0.64956E-02
A12= -0.33805E-01 A8= -0.76012E-02
A14= 0.18767E-01 A10= 0.10413E-01
A12= -0.15621E-02
A14= 0.34072E-02
第4面 第10面
K= -0.80000E+02 K= -0.75104E+02
A4= -0.16460E-01 A3= -0.81216E-01
A6= 0.13414E+00 A4= 0.15296E+00
A8= -0.70650E-01 A5= -0.14967E+00
A10= -0.51751E-01 A6= -0.85533E-02
A12= 0.18357E-01 A8= 0.37480E-01
A14= 0.30319E-01 A10= -0.14685E-01
A12= -0.76921E-02
A14= 0.40260E-02
第5面 第11面
K= -0.11872E+02 K= -0.55040E+01
A3= -0.25270E-01 A3= -0.72660E-01
A4= 0.99110E-01 A4= -0.22212E-01
A5= -0.10822E-01 A5= 0.23796E-01
A6= 0.54576E-01 A6= 0.22744E-01
A8= 0.20300E-01 A8= -0.14054E-01
A10= -0.20055E-02 A10= 0.15688E-02
A12= -0.29972E-01 A12= 0.13325E-02
A14= 0.77829E-01 A14= -0.37055E-03
第6面 第12面
K= 0.74735E+02 K= -0.28647E+01
A3= 0.96936E-02 A3= -0.84014E-01
A4= -0.79431E-01 A4= 0.58462E-02
A5= -0.88704E-01 A5= 0.81861E-02
A6= 0.34259E-01 A6= 0.72514E-02
A8= 0.11055E-04 A8= -0.26347E-03
A10= -0.39325E-01 A10= -0.16534E-03
A12= -0.21838E-03 A12= 0.50431E-05
A14= 0.20072E-01 A14= 0.12351E-05
第7面 第13面
K= 0.0 K= -0.98202E+01
A4= -0.43177E-01 A3= -0.96722E-01
A6= -0.70355E-01 A4= 0.14664E-01
A8= -0.12578E-01 A5= 0.56974E-02
A10= 0.22162E-01 A6= -0.81339E-03
A12= -0.25624E-01 A8= -0.99909E-03
A10= 0.74992E-04
A12= 0.98469E-06
A14= 0.40160E-06
単レンズデータ
レンズ 始面 焦点距離(mm)
1 2 2.743
2 4 -4.728
3 6 11.580
4 8 -16.335
5 10 2.310
6 12 -1.741
[Table 1]
Example 1
f = 3.68mm fB = 0.38mm F = 2.08 2Y = 5.842mm
ENTP = 0mm EXTP = -2.06mm H1 = -1.87mm H2 = -3.3mm
Surface number R (mm) D (mm) Nd νd Effective radius (mm)
1 (Aperture) ∞ -0.24 0.88
2 * 1.483 0.47 1.54470 56.2 0.91
3 * 171.642 0.09 0.91
4 * 35.177 0.15 1.63470 23.9 0.91
5 * 2.761 0.39 0.89
6 * 11.100 0.39 1.54470 56.2 0.97
7 * -14.430 0.13 1.09
8 * -5.348 0.20 1.63470 23.9 1.12
9 * -11.205 0.40 1.24
10 * -22.120 0.54 1.54470 56.2 1.44
11 * -1.201 0.42 1.71
12 * -2.732 0.31 1.54470 56.2 2.36
13 * 1.511 0.40 2.56
14 ∞ 0.11 1.51630 64.1 3.00
15 ∞ 3.00
Aspheric coefficient
2nd side 8th side
K = 0.11064E + 00 K = 0.0
A4 = 0.77619E-02 A4 = -0.83830E-01
A6 = -0.14994E-02 A6 = -0.72201E-02
A8 = -0.14046E-02 A8 = -0.12901E-02
A10 = 0.18350E-01 A10 = -0.69251E-02
A12 = 0.49521E-02 A12 = 0.52899E-02
A14 = -0.29657E-01
3rd side 9th side
K = -0.80000E + 02 K = 0.33633E + 02
A4 = 0.22449E-01 A3 = 0.12200E-01
A6 = 0.10582E-01 A4 = -0.12793E + 00
A8 = 0.17426E-01 A5 = 0.28268E-01
A10 = -0.33613E-01 A6 = -0.64956E-02
A12 = -0.33805E-01 A8 = -0.76012E-02
A14 = 0.18767E-01 A10 = 0.10413E-01
A12 = -0.15621E-02
A14 = 0.34072E-02
4th page 10th page
K = -0.80000E + 02 K = -0.75104E + 02
A4 = -0.16460E-01 A3 = -0.81216E-01
A6 = 0.13414E + 00 A4 = 0.15296E + 00
A8 = -0.70650E-01 A5 = -0.14967E + 00
A10 = -0.51751E-01 A6 = -0.85533E-02
A12 = 0.18357E-01 A8 = 0.37480E-01
A14 = 0.30319E-01 A10 = -0.14685E-01
A12 = -0.76921E-02
A14 = 0.40260E-02
5th surface 11th surface
K = -0.11872E + 02 K = -0.55040E + 01
A3 = -0.25270E-01 A3 = -0.72660E-01
A4 = 0.99110E-01 A4 = -0.22212E-01
A5 = -0.10822E-01 A5 = 0.23796E-01
A6 = 0.54576E-01 A6 = 0.22744E-01
A8 = 0.20300E-01 A8 = -0.14054E-01
A10 = -0.20055E-02 A10 = 0.15688E-02
A12 = -0.29972E-01 A12 = 0.13325E-02
A14 = 0.77829E-01 A14 = -0.37055E-03
6th page 12th page
K = 0.74735E + 02 K = -0.28647E + 01
A3 = 0.96936E-02 A3 = -0.84014E-01
A4 = -0.79431E-01 A4 = 0.58462E-02
A5 = -0.88704E-01 A5 = 0.81861E-02
A6 = 0.34259E-01 A6 = 0.72514E-02
A8 = 0.11055E-04 A8 = -0.26347E-03
A10 = -0.39325E-01 A10 = -0.16534E-03
A12 = -0.21838E-03 A12 = 0.50431E-05
A14 = 0.20072E-01 A14 = 0.12351E-05
7th 13th
K = 0.0 K = -0.98202E + 01
A4 = -0.43177E-01 A3 = -0.96722E-01
A6 = -0.70355E-01 A4 = 0.14664E-01
A8 = -0.12578E-01 A5 = 0.56974E-02
A10 = 0.22162E-01 A6 = -0.81339E-03
A12 = -0.25624E-01 A8 = -0.99909E-03
A10 = 0.74992E-04
A12 = 0.98469E-06
A14 = 0.40160E-06
Single lens data
Lens Start surface Focal length (mm)
1 2 2.743
2 4 -4.728
3 6 11.580
4 8 -16.335
5 10 2.310
6 12 -1.741
図5は実施例1のレンズの断面図である。図中、正の屈折力を有し光軸近傍で物体側に凸面を向け、像側面よりも物体側面の方が強い曲率を有する第1レンズL1、負の屈折力を有する第2レンズL2、正の屈折力を有する第3レンズL3、負の屈折力を有する第4レンズL4、正の屈折力を有する第5レンズL5、負の屈折力を有し光軸近傍で像側に凹面を向けた第6レンズL6、からなる。Fナンバーは2.08である。開口絞りSは、第1レンズL1の物体側面の有効径より物体側に配置されている。Iは撮像面を示す。また、Fは光学的ローパスフィルタやIRカットフィルタ、固体撮像素子のシールガラス等を想定した平行平板である。図6は実施例1の収差図(球面収差(a)、非点収差(b)、歪曲収差(c)、メリディオナルコマ収差図(d))である。ここで、球面収差図、メリディオナルコマ収差図において、実線はd線、点線はg線に対する球面収差量、コマ収差量をそれぞれ表し、非点収差図において、実線Sはサジタル面、点線Mはメリディオナル面を表す(以下、同じ)。
FIG. 5 is a sectional view of the lens of Example 1. In the figure, a first lens L1 having a positive refractive power and a convex surface facing the object side in the vicinity of the optical axis and having a curvature that is stronger on the object side surface than on the image side surface, a second lens L2 having a negative refractive power, A third lens L3 having a positive refractive power, a fourth lens L4 having a negative refractive power, a fifth lens L5 having a positive refractive power, and having a negative refractive power and a concave surface facing the image side in the vicinity of the optical axis The sixth lens L6. The F number is 2.08. The aperture stop S is disposed closer to the object side than the effective diameter of the object side surface of the first lens L1. I indicates an imaging surface. Further, F is a parallel plate assuming an optical low-pass filter, an IR cut filter, a seal glass of a solid-state image sensor, or the like. FIG. 6 is an aberration diagram of Example 1 (spherical aberration (a), astigmatism (b), distortion aberration (c), and meridional coma aberration diagram (d)). Here, in the spherical aberration diagram and the meridional coma aberration diagram, the solid line represents the spherical aberration amount and the coma aberration amount with respect to the d line and the dotted line, respectively. In the astigmatism diagram, the solid line S represents the sagittal surface and the dotted line M. Represents a meridional plane (hereinafter the same).
(実施例2)
実施例2の撮像レンズのレンズデータを、表2に示す。 (Example 2)
Table 2 shows lens data of the imaging lens of Example 2.
実施例2の撮像レンズのレンズデータを、表2に示す。 (Example 2)
Table 2 shows lens data of the imaging lens of Example 2.
[表2]
実施例2
f=3.68mm fB=0.22mm F=2.06 2Y=5.842mm
ENTP=0mm EXTP=-2.29mm H1=-1.7mm H2=-3.45mm
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1(絞り) ∞ -0.25 0.89
2* 1.502 0.50 1.54470 56.2 0.92
3* -109.088 0.08 0.92
4* 19.666 0.15 1.63470 23.9 0.91
5* 2.544 0.43 0.90
6* 26.009 0.38 1.54470 56.2 0.99
7* -6.913 0.10 1.10
8* -3.318 0.20 1.63470 23.9 1.14
9* -4.723 0.42 1.24
10* -13.234 0.58 1.54470 56.2 1.44
11* -1.109 0.35 1.70
12* -3.182 0.31 1.54470 56.2 2.38
13* 1.286 0.60 2.58
14 ∞ 0.11 1.51630 64.1 3.00
15 ∞ 3.00
非球面係数
第2面 第8面
K= 0.12069E+00 K= 0.0
A4= 0.62128E-02 A4= -0.41360E-01
A6= 0.27993E-02 A6= -0.14427E-02
A8= -0.13978E-04 A8= -0.48378E-02
A10= 0.15304E-01 A10= -0.46095E-02
A12= 0.81189E-02 A12= 0.54066E-02
A14= -0.24586E-01
第3面 第9面
K= 0.78940E+02 K= -0.86499E+01
A4= 0.24770E-01 A3= 0.12179E-01
A6= 0.21902E-01 A4= -0.10842E+00
A8= 0.87637E-02 A5= 0.27021E-01
A10= -0.45072E-01 A6= -0.85621E-02
A12= -0.32233E-01 A8= -0.71771E-02
A14= 0.23275E-01 A10= 0.11311E-01
A12= -0.14557E-02
A14= 0.27447E-02
第4面 第10面
K= -0.61452E+01 K= 0.79990E+02
A4= -0.21904E-01 A3= -0.71966E-01
A6= 0.12725E+00 A4= 0.14033E+00
A8= -0.76644E-01 A5= -0.16729E+00
A10= -0.69816E-01 A6= -0.31809E-02
A12= 0.38044E-02 A8= 0.46165E-01
A14= 0.43961E-01 A10= -0.16904E-01
A12= -0.86245E-02
A14= 0.47722E-02
第5面 第11面
K= -0.11453E+02 K= -0.53254E+01
A3= -0.24116E-01 A3= -0.59461E-01
A4= 0.10536E+00 A4= -0.37309E-01
A5= -0.22029E-02 A5= 0.15122E-01
A6= 0.40139E-01 A6= 0.20470E-01
A8= -0.53939E-02 A8= -0.12854E-01
A10= -0.11449E-02 A10= 0.23633E-02
A12= -0.18688E-01 A12= 0.14302E-02
A14= 0.67803E-01 A14= -0.45843E-03
第6面 第12面
K= 0.42598E+02 K= -0.34183E+01
A3= 0.18653E-01 A3= -0.78483E-01
A4= -0.10541E+00 A4= 0.41369E-02
A5= -0.52108E-01 A5= 0.71609E-02
A6= 0.45716E-01 A6= 0.68382E-02
A8= -0.31439E-01 A8= -0.20906E-03
A10= -0.35417E-01 A10= -0.14898E-03
A12= 0.21941E-01 A12= 0.60853E-05
A14= 0.68957E-02 A14= 0.85025E-06
第7面 第13面
K= 0.0 K= -0.91159E+01
A4= -0.47259E-01 A3= -0.82494E-01
A6= -0.49230E-01 A4= 0.99966E-02
A8= -0.10531E-01 A5= 0.41382E-02
A10= 0.63567E-02 A6= -0.27724E-03
A12= -0.17266E-01 A8= -0.84719E-03
A10= 0.76953E-04
A12= -0.53432E-06
A14= 0.34889E-06
単レンズデータ
レンズ 始面 焦点距離(mm)
1 2 2.725
2 4 -4.619
3 6 10.067
4 8 -18.588
5 10 2.185
6 12 -1.641
[Table 2]
Example 2
f = 3.68mm fB = 0.22mm F = 2.06 2Y = 5.842mm
ENTP = 0mm EXTP = -2.29mm H1 = -1.7mm H2 = -3.45mm
Surface number R (mm) D (mm) Nd νd Effective radius (mm)
1 (Aperture) ∞ -0.25 0.89
2 * 1.502 0.50 1.54470 56.2 0.92
3 * -109.088 0.08 0.92
4 * 19.666 0.15 1.63470 23.9 0.91
5 * 2.544 0.43 0.90
6 * 26.009 0.38 1.54470 56.2 0.99
7 * -6.913 0.10 1.10
8 * -3.318 0.20 1.63470 23.9 1.14
9 * -4.723 0.42 1.24
10 * -13.234 0.58 1.54470 56.2 1.44
11 * -1.109 0.35 1.70
12 * -3.182 0.31 1.54470 56.2 2.38
13 * 1.286 0.60 2.58
14 ∞ 0.11 1.51630 64.1 3.00
15 ∞ 3.00
Aspheric coefficient
2nd side 8th side
K = 0.12069E + 00 K = 0.0
A4 = 0.62128E-02 A4 = -0.41360E-01
A6 = 0.27993E-02 A6 = -0.14427E-02
A8 = -0.13978E-04 A8 = -0.48378E-02
A10 = 0.15304E-01 A10 = -0.46095E-02
A12 = 0.81189E-02 A12 = 0.54066E-02
A14 = -0.24586E-01
3rd side 9th side
K = 0.78940E + 02 K = -0.86499E + 01
A4 = 0.24770E-01 A3 = 0.12179E-01
A6 = 0.21902E-01 A4 = -0.10842E + 00
A8 = 0.87637E-02 A5 = 0.27021E-01
A10 = -0.45072E-01 A6 = -0.85621E-02
A12 = -0.32233E-01 A8 = -0.71771E-02
A14 = 0.23275E-01 A10 = 0.11311E-01
A12 = -0.14557E-02
A14 = 0.27447E-02
4th page 10th page
K = -0.61452E + 01 K = 0.79990E + 02
A4 = -0.21904E-01 A3 = -0.71966E-01
A6 = 0.12725E + 00 A4 = 0.14033E + 00
A8 = -0.76644E-01 A5 = -0.16729E + 00
A10 = -0.69816E-01 A6 = -0.31809E-02
A12 = 0.38044E-02 A8 = 0.46165E-01
A14 = 0.43961E-01 A10 = -0.16904E-01
A12 = -0.86245E-02
A14 = 0.47722E-02
5th surface 11th surface
K = -0.11453E + 02 K = -0.53254E + 01
A3 = -0.24116E-01 A3 = -0.59461E-01
A4 = 0.10536E + 00 A4 = -0.37309E-01
A5 = -0.22029E-02 A5 = 0.15122E-01
A6 = 0.40139E-01 A6 = 0.20470E-01
A8 = -0.53939E-02 A8 = -0.12854E-01
A10 = -0.11449E-02 A10 = 0.23633E-02
A12 = -0.18688E-01 A12 = 0.14302E-02
A14 = 0.67803E-01 A14 = -0.45843E-03
6th page 12th page
K = 0.42598E + 02 K = -0.34183E + 01
A3 = 0.18653E-01 A3 = -0.78483E-01
A4 = -0.10541E + 00 A4 = 0.41369E-02
A5 = -0.52108E-01 A5 = 0.71609E-02
A6 = 0.45716E-01 A6 = 0.68382E-02
A8 = -0.31439E-01 A8 = -0.20906E-03
A10 = -0.35417E-01 A10 = -0.14898E-03
A12 = 0.21941E-01 A12 = 0.60853E-05
A14 = 0.68957E-02 A14 = 0.85025E-06
7th 13th
K = 0.0 K = -0.91159E + 01
A4 = -0.47259E-01 A3 = -0.82494E-01
A6 = -0.49230E-01 A4 = 0.99966E-02
A8 = -0.10531E-01 A5 = 0.41382E-02
A10 = 0.63567E-02 A6 = -0.27724E-03
A12 = -0.17266E-01 A8 = -0.84719E-03
A10 = 0.76953E-04
A12 = -0.53432E-06
A14 = 0.34889E-06
Single lens data
Lens Start surface Focal length (mm)
1 2 2.725
2 4 -4.619
3 6 10.067
4 8 -18.588
5 10 2.185
6 12 -1.641
実施例2
f=3.68mm fB=0.22mm F=2.06 2Y=5.842mm
ENTP=0mm EXTP=-2.29mm H1=-1.7mm H2=-3.45mm
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1(絞り) ∞ -0.25 0.89
2* 1.502 0.50 1.54470 56.2 0.92
3* -109.088 0.08 0.92
4* 19.666 0.15 1.63470 23.9 0.91
5* 2.544 0.43 0.90
6* 26.009 0.38 1.54470 56.2 0.99
7* -6.913 0.10 1.10
8* -3.318 0.20 1.63470 23.9 1.14
9* -4.723 0.42 1.24
10* -13.234 0.58 1.54470 56.2 1.44
11* -1.109 0.35 1.70
12* -3.182 0.31 1.54470 56.2 2.38
13* 1.286 0.60 2.58
14 ∞ 0.11 1.51630 64.1 3.00
15 ∞ 3.00
非球面係数
第2面 第8面
K= 0.12069E+00 K= 0.0
A4= 0.62128E-02 A4= -0.41360E-01
A6= 0.27993E-02 A6= -0.14427E-02
A8= -0.13978E-04 A8= -0.48378E-02
A10= 0.15304E-01 A10= -0.46095E-02
A12= 0.81189E-02 A12= 0.54066E-02
A14= -0.24586E-01
第3面 第9面
K= 0.78940E+02 K= -0.86499E+01
A4= 0.24770E-01 A3= 0.12179E-01
A6= 0.21902E-01 A4= -0.10842E+00
A8= 0.87637E-02 A5= 0.27021E-01
A10= -0.45072E-01 A6= -0.85621E-02
A12= -0.32233E-01 A8= -0.71771E-02
A14= 0.23275E-01 A10= 0.11311E-01
A12= -0.14557E-02
A14= 0.27447E-02
第4面 第10面
K= -0.61452E+01 K= 0.79990E+02
A4= -0.21904E-01 A3= -0.71966E-01
A6= 0.12725E+00 A4= 0.14033E+00
A8= -0.76644E-01 A5= -0.16729E+00
A10= -0.69816E-01 A6= -0.31809E-02
A12= 0.38044E-02 A8= 0.46165E-01
A14= 0.43961E-01 A10= -0.16904E-01
A12= -0.86245E-02
A14= 0.47722E-02
第5面 第11面
K= -0.11453E+02 K= -0.53254E+01
A3= -0.24116E-01 A3= -0.59461E-01
A4= 0.10536E+00 A4= -0.37309E-01
A5= -0.22029E-02 A5= 0.15122E-01
A6= 0.40139E-01 A6= 0.20470E-01
A8= -0.53939E-02 A8= -0.12854E-01
A10= -0.11449E-02 A10= 0.23633E-02
A12= -0.18688E-01 A12= 0.14302E-02
A14= 0.67803E-01 A14= -0.45843E-03
第6面 第12面
K= 0.42598E+02 K= -0.34183E+01
A3= 0.18653E-01 A3= -0.78483E-01
A4= -0.10541E+00 A4= 0.41369E-02
A5= -0.52108E-01 A5= 0.71609E-02
A6= 0.45716E-01 A6= 0.68382E-02
A8= -0.31439E-01 A8= -0.20906E-03
A10= -0.35417E-01 A10= -0.14898E-03
A12= 0.21941E-01 A12= 0.60853E-05
A14= 0.68957E-02 A14= 0.85025E-06
第7面 第13面
K= 0.0 K= -0.91159E+01
A4= -0.47259E-01 A3= -0.82494E-01
A6= -0.49230E-01 A4= 0.99966E-02
A8= -0.10531E-01 A5= 0.41382E-02
A10= 0.63567E-02 A6= -0.27724E-03
A12= -0.17266E-01 A8= -0.84719E-03
A10= 0.76953E-04
A12= -0.53432E-06
A14= 0.34889E-06
単レンズデータ
レンズ 始面 焦点距離(mm)
1 2 2.725
2 4 -4.619
3 6 10.067
4 8 -18.588
5 10 2.185
6 12 -1.641
[Table 2]
Example 2
f = 3.68mm fB = 0.22mm F = 2.06 2Y = 5.842mm
ENTP = 0mm EXTP = -2.29mm H1 = -1.7mm H2 = -3.45mm
Surface number R (mm) D (mm) Nd νd Effective radius (mm)
1 (Aperture) ∞ -0.25 0.89
2 * 1.502 0.50 1.54470 56.2 0.92
3 * -109.088 0.08 0.92
4 * 19.666 0.15 1.63470 23.9 0.91
5 * 2.544 0.43 0.90
6 * 26.009 0.38 1.54470 56.2 0.99
7 * -6.913 0.10 1.10
8 * -3.318 0.20 1.63470 23.9 1.14
9 * -4.723 0.42 1.24
10 * -13.234 0.58 1.54470 56.2 1.44
11 * -1.109 0.35 1.70
12 * -3.182 0.31 1.54470 56.2 2.38
13 * 1.286 0.60 2.58
14 ∞ 0.11 1.51630 64.1 3.00
15 ∞ 3.00
Aspheric coefficient
2nd side 8th side
K = 0.12069E + 00 K = 0.0
A4 = 0.62128E-02 A4 = -0.41360E-01
A6 = 0.27993E-02 A6 = -0.14427E-02
A8 = -0.13978E-04 A8 = -0.48378E-02
A10 = 0.15304E-01 A10 = -0.46095E-02
A12 = 0.81189E-02 A12 = 0.54066E-02
A14 = -0.24586E-01
3rd side 9th side
K = 0.78940E + 02 K = -0.86499E + 01
A4 = 0.24770E-01 A3 = 0.12179E-01
A6 = 0.21902E-01 A4 = -0.10842E + 00
A8 = 0.87637E-02 A5 = 0.27021E-01
A10 = -0.45072E-01 A6 = -0.85621E-02
A12 = -0.32233E-01 A8 = -0.71771E-02
A14 = 0.23275E-01 A10 = 0.11311E-01
A12 = -0.14557E-02
A14 = 0.27447E-02
4th page 10th page
K = -0.61452E + 01 K = 0.79990E + 02
A4 = -0.21904E-01 A3 = -0.71966E-01
A6 = 0.12725E + 00 A4 = 0.14033E + 00
A8 = -0.76644E-01 A5 = -0.16729E + 00
A10 = -0.69816E-01 A6 = -0.31809E-02
A12 = 0.38044E-02 A8 = 0.46165E-01
A14 = 0.43961E-01 A10 = -0.16904E-01
A12 = -0.86245E-02
A14 = 0.47722E-02
5th surface 11th surface
K = -0.11453E + 02 K = -0.53254E + 01
A3 = -0.24116E-01 A3 = -0.59461E-01
A4 = 0.10536E + 00 A4 = -0.37309E-01
A5 = -0.22029E-02 A5 = 0.15122E-01
A6 = 0.40139E-01 A6 = 0.20470E-01
A8 = -0.53939E-02 A8 = -0.12854E-01
A10 = -0.11449E-02 A10 = 0.23633E-02
A12 = -0.18688E-01 A12 = 0.14302E-02
A14 = 0.67803E-01 A14 = -0.45843E-03
6th page 12th page
K = 0.42598E + 02 K = -0.34183E + 01
A3 = 0.18653E-01 A3 = -0.78483E-01
A4 = -0.10541E + 00 A4 = 0.41369E-02
A5 = -0.52108E-01 A5 = 0.71609E-02
A6 = 0.45716E-01 A6 = 0.68382E-02
A8 = -0.31439E-01 A8 = -0.20906E-03
A10 = -0.35417E-01 A10 = -0.14898E-03
A12 = 0.21941E-01 A12 = 0.60853E-05
A14 = 0.68957E-02 A14 = 0.85025E-06
7th 13th
K = 0.0 K = -0.91159E + 01
A4 = -0.47259E-01 A3 = -0.82494E-01
A6 = -0.49230E-01 A4 = 0.99966E-02
A8 = -0.10531E-01 A5 = 0.41382E-02
A10 = 0.63567E-02 A6 = -0.27724E-03
A12 = -0.17266E-01 A8 = -0.84719E-03
A10 = 0.76953E-04
A12 = -0.53432E-06
A14 = 0.34889E-06
Single lens data
Lens Start surface Focal length (mm)
1 2 2.725
2 4 -4.619
3 6 10.067
4 8 -18.588
5 10 2.185
6 12 -1.641
図7は実施例2のレンズの断面図である。図中、正の屈折力を有し光軸近傍で物体側に凸面を向け、像側面よりも物体側面の方が強い曲率を有する第1レンズL1、負の屈折力を有する第2レンズL2、正の屈折力を有する第3レンズL3、負の屈折力を有する第4レンズL4、正の屈折力を有する第5レンズL5、負の屈折力を有し光軸近傍で像側に凹面を向けた第6レンズL6、からなる。Fナンバーは2.06である。開口絞りSは、第1レンズL1の物体側面の有効径より物体側に配置されている。Iは撮像面を示す。また、Fは光学的ローパスフィルタやIRカットフィルタ、固体撮像素子のシールガラス等を想定した平行平板である。図8は実施例2の収差図(球面収差(a)、非点収差(b)、歪曲収差(c)、メリディオナルコマ収差図(d))である。
FIG. 7 is a sectional view of the lens of Example 2. In the figure, a first lens L1 having a positive refractive power and a convex surface facing the object side in the vicinity of the optical axis and having a curvature that is stronger on the object side surface than on the image side surface, a second lens L2 having a negative refractive power, A third lens L3 having a positive refractive power, a fourth lens L4 having a negative refractive power, a fifth lens L5 having a positive refractive power, and having a negative refractive power and a concave surface facing the image side in the vicinity of the optical axis The sixth lens L6. The F number is 2.06. The aperture stop S is disposed closer to the object side than the effective diameter of the object side surface of the first lens L1. I indicates an imaging surface. Further, F is a parallel plate assuming an optical low-pass filter, an IR cut filter, a seal glass of a solid-state image sensor, or the like. FIG. 8 is an aberration diagram of Example 2 (spherical aberration (a), astigmatism (b), distortion (c), and meridional coma aberration (d)).
(実施例3)
実施例3の撮像レンズのレンズデータを、表3に示す。 (Example 3)
Table 3 shows lens data of the imaging lens of Example 3.
実施例3の撮像レンズのレンズデータを、表3に示す。 (Example 3)
Table 3 shows lens data of the imaging lens of Example 3.
[表3]
実施例3
f=3.68mm fB=0.42mm F=1.84 2Y=5.842mm
ENTP=0mm EXTP=-2.18mm H1=-1.51mm H2=-3.26mm
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1(絞り) ∞ -0.29 1.00
2* 1.599 0.58 1.54890 50.3 1.00
3* 123.386 0.08 0.94
4* 20.225 0.15 1.67750 20.1 0.90
5* 2.930 0.48 0.82
6* 8.071 0.34 1.54470 56.2 0.76
7* 46.334 0.11 0.72
8* 14.675 0.20 1.63470 23.9 0.70
9* 7.088 0.39 0.68
10* -22.390 0.68 1.54470 56.2 0.58
11* -1.038 0.33 0.48
12* -4.171 0.33 1.51530 56.6 0.24
13* 1.107 0.40 0.13
14 ∞ 0.11 1.51630 64.1 0.07
15 ∞ 0.10
非球面係数
第2面 第8面
K= 0.90136E-01 K= 0.0
A4= 0.62088E-02 A4= -0.12171E+00
A6= -0.31031E-03 A6= -0.18544E-01
A8= -0.91505E-02 A8= -0.21266E-02
A10= 0.16634E-01 A10= -0.51285E-02
A12= 0.87033E-02 A12= 0.64902E-02
A14= -0.21104E-01
第3面 第9面
K= -0.17429E+02 K= -0.23270E+02
A4= 0.10420E-01 A3= 0.93551E-02
A6= 0.16472E-01 A4= -0.14221E+00
A8= 0.99197E-02 A5= 0.20010E-01
A10= -0.35411E-01 A6= -0.11598E-01
A12= -0.28804E-01 A8= -0.11738E-01
A14= 0.24644E-01 A10= 0.70468E-02
A12= -0.32261E-02
A14= 0.31645E-02
第4面 第10面
K= -0.79883E+02 K= 0.80000E+02
A4= -0.37041E-01 A3= -0.74349E-01
A6= 0.12556E+00 A4= 0.15344E+00
A8= -0.66051E-01 A5= -0.14053E+00
A10= -0.47567E-01 A6= -0.10310E-01
A12= 0.15305E-01 A8= 0.36495E-01
A14= 0.28341E-01 A10= -0.12425E-01
A12= -0.70941E-02
A14= 0.32450E-02
第5面 第11面
K= -0.15300E+02 K= -0.55642E+01
A3= -0.18666E-01 A3= -0.10000E+00
A4= 0.83056E-01 A4= -0.33235E-01
A5= -0.28818E-01 A5= 0.21592E-01
A6= 0.54738E-01 A6= 0.24639E-01
A8= 0.15866E-01 A8= -0.13269E-01
A10= -0.19605E-01 A10= 0.14174E-02
A12= -0.45484E-01 A12= 0.12894E-02
A14= 0.74296E-01 A14= -0.32676E-03
第6面 第12面
K= 0.51365E+02 K= -0.77089E+00
A3= -0.59682E-02 A3= -0.10220E+00
A4= -0.25343E-01 A4= 0.31977E-02
A5= -0.94375E-01 A5= 0.85425E-02
A6= 0.11983E-01 A6= 0.77410E-02
A8= 0.45669E-02 A8= -0.14940E-03
A10= -0.31903E-01 A10= -0.15309E-03
A12= -0.57207E-02 A12= 0.53890E-05
A14= 0.42809E-02 A14= 0.73836E-06
第7面 第13面
K= 0.0 K= -0.76119E+01
A4= -0.15724E-01 A3= -0.97006E-01
A6= -0.67167E-01 A4= 0.17677E-01
A8= -0.15241E-01 A5= 0.59811E-02
A10= 0.25420E-01 A6= -0.11827E-02
A12= -0.18803E-01 A8= -0.97905E-03
A10= 0.89522E-04
A12= 0.16991E-05
A14= -0.49666E-07
単レンズデータ
レンズ 始面 焦点距離(mm)
1 2 2.946
2 4 -5.075
3 6 17.886
4 8 -21.825
5 10 1.976
6 12 -1.663
[Table 3]
Example 3
f = 3.68mm fB = 0.42mm F = 1.84 2Y = 5.842mm
ENTP = 0mm EXTP = -2.18mm H1 = -1.51mm H2 = -3.26mm
Surface number R (mm) D (mm) Nd νd Effective radius (mm)
1 (Aperture) ∞ -0.29 1.00
2 * 1.599 0.58 1.54890 50.3 1.00
3 * 123.386 0.08 0.94
4 * 20.225 0.15 1.67750 20.1 0.90
5 * 2.930 0.48 0.82
6 * 8.071 0.34 1.54470 56.2 0.76
7 * 46.334 0.11 0.72
8 * 14.675 0.20 1.63470 23.9 0.70
9 * 7.088 0.39 0.68
10 * -22.390 0.68 1.54470 56.2 0.58
11 * -1.038 0.33 0.48
12 * -4.171 0.33 1.51530 56.6 0.24
13 * 1.107 0.40 0.13
14 ∞ 0.11 1.51630 64.1 0.07
15 ∞ 0.10
Aspheric coefficient
2nd side 8th side
K = 0.90136E-01 K = 0.0
A4 = 0.62088E-02 A4 = -0.12171E + 00
A6 = -0.31031E-03 A6 = -0.18544E-01
A8 = -0.91505E-02 A8 = -0.21266E-02
A10 = 0.16634E-01 A10 = -0.51285E-02
A12 = 0.87033E-02 A12 = 0.64902E-02
A14 = -0.21104E-01
3rd side 9th side
K = -0.17429E + 02 K = -0.23270E + 02
A4 = 0.10420E-01 A3 = 0.93551E-02
A6 = 0.16472E-01 A4 = -0.14221E + 00
A8 = 0.99197E-02 A5 = 0.20010E-01
A10 = -0.35411E-01 A6 = -0.11598E-01
A12 = -0.28804E-01 A8 = -0.11738E-01
A14 = 0.24644E-01 A10 = 0.70468E-02
A12 = -0.32261E-02
A14 = 0.31645E-02
4th page 10th page
K = -0.79883E + 02 K = 0.80000E + 02
A4 = -0.37041E-01 A3 = -0.74349E-01
A6 = 0.12556E + 00 A4 = 0.15344E + 00
A8 = -0.66051E-01 A5 = -0.14053E + 00
A10 = -0.47567E-01 A6 = -0.10310E-01
A12 = 0.15305E-01 A8 = 0.36495E-01
A14 = 0.28341E-01 A10 = -0.12425E-01
A12 = -0.70941E-02
A14 = 0.32450E-02
5th surface 11th surface
K = -0.15300E + 02 K = -0.55642E + 01
A3 = -0.18666E-01 A3 = -0.10000E + 00
A4 = 0.83056E-01 A4 = -0.33235E-01
A5 = -0.28818E-01 A5 = 0.21592E-01
A6 = 0.54738E-01 A6 = 0.24639E-01
A8 = 0.15866E-01 A8 = -0.13269E-01
A10 = -0.19605E-01 A10 = 0.14174E-02
A12 = -0.45484E-01 A12 = 0.12894E-02
A14 = 0.74296E-01 A14 = -0.32676E-03
6th page 12th page
K = 0.51365E + 02 K = -0.77089E + 00
A3 = -0.59682E-02 A3 = -0.10220E + 00
A4 = -0.25343E-01 A4 = 0.31977E-02
A5 = -0.94375E-01 A5 = 0.85425E-02
A6 = 0.11983E-01 A6 = 0.77410E-02
A8 = 0.45669E-02 A8 = -0.14940E-03
A10 = -0.31903E-01 A10 = -0.15309E-03
A12 = -0.57207E-02 A12 = 0.53890E-05
A14 = 0.42809E-02 A14 = 0.73836E-06
7th 13th
K = 0.0 K = -0.76119E + 01
A4 = -0.15724E-01 A3 = -0.97006E-01
A6 = -0.67167E-01 A4 = 0.17677E-01
A8 = -0.15241E-01 A5 = 0.59811E-02
A10 = 0.25420E-01 A6 = -0.11827E-02
A12 = -0.18803E-01 A8 = -0.97905E-03
A10 = 0.89522E-04
A12 = 0.16991E-05
A14 = -0.49666E-07
Single lens data
Lens Start surface Focal length (mm)
1 2 2.946
2 4 -5.075
3 6 17.886
4 8 -21.825
5 10 1.976
6 12 -1.663
実施例3
f=3.68mm fB=0.42mm F=1.84 2Y=5.842mm
ENTP=0mm EXTP=-2.18mm H1=-1.51mm H2=-3.26mm
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1(絞り) ∞ -0.29 1.00
2* 1.599 0.58 1.54890 50.3 1.00
3* 123.386 0.08 0.94
4* 20.225 0.15 1.67750 20.1 0.90
5* 2.930 0.48 0.82
6* 8.071 0.34 1.54470 56.2 0.76
7* 46.334 0.11 0.72
8* 14.675 0.20 1.63470 23.9 0.70
9* 7.088 0.39 0.68
10* -22.390 0.68 1.54470 56.2 0.58
11* -1.038 0.33 0.48
12* -4.171 0.33 1.51530 56.6 0.24
13* 1.107 0.40 0.13
14 ∞ 0.11 1.51630 64.1 0.07
15 ∞ 0.10
非球面係数
第2面 第8面
K= 0.90136E-01 K= 0.0
A4= 0.62088E-02 A4= -0.12171E+00
A6= -0.31031E-03 A6= -0.18544E-01
A8= -0.91505E-02 A8= -0.21266E-02
A10= 0.16634E-01 A10= -0.51285E-02
A12= 0.87033E-02 A12= 0.64902E-02
A14= -0.21104E-01
第3面 第9面
K= -0.17429E+02 K= -0.23270E+02
A4= 0.10420E-01 A3= 0.93551E-02
A6= 0.16472E-01 A4= -0.14221E+00
A8= 0.99197E-02 A5= 0.20010E-01
A10= -0.35411E-01 A6= -0.11598E-01
A12= -0.28804E-01 A8= -0.11738E-01
A14= 0.24644E-01 A10= 0.70468E-02
A12= -0.32261E-02
A14= 0.31645E-02
第4面 第10面
K= -0.79883E+02 K= 0.80000E+02
A4= -0.37041E-01 A3= -0.74349E-01
A6= 0.12556E+00 A4= 0.15344E+00
A8= -0.66051E-01 A5= -0.14053E+00
A10= -0.47567E-01 A6= -0.10310E-01
A12= 0.15305E-01 A8= 0.36495E-01
A14= 0.28341E-01 A10= -0.12425E-01
A12= -0.70941E-02
A14= 0.32450E-02
第5面 第11面
K= -0.15300E+02 K= -0.55642E+01
A3= -0.18666E-01 A3= -0.10000E+00
A4= 0.83056E-01 A4= -0.33235E-01
A5= -0.28818E-01 A5= 0.21592E-01
A6= 0.54738E-01 A6= 0.24639E-01
A8= 0.15866E-01 A8= -0.13269E-01
A10= -0.19605E-01 A10= 0.14174E-02
A12= -0.45484E-01 A12= 0.12894E-02
A14= 0.74296E-01 A14= -0.32676E-03
第6面 第12面
K= 0.51365E+02 K= -0.77089E+00
A3= -0.59682E-02 A3= -0.10220E+00
A4= -0.25343E-01 A4= 0.31977E-02
A5= -0.94375E-01 A5= 0.85425E-02
A6= 0.11983E-01 A6= 0.77410E-02
A8= 0.45669E-02 A8= -0.14940E-03
A10= -0.31903E-01 A10= -0.15309E-03
A12= -0.57207E-02 A12= 0.53890E-05
A14= 0.42809E-02 A14= 0.73836E-06
第7面 第13面
K= 0.0 K= -0.76119E+01
A4= -0.15724E-01 A3= -0.97006E-01
A6= -0.67167E-01 A4= 0.17677E-01
A8= -0.15241E-01 A5= 0.59811E-02
A10= 0.25420E-01 A6= -0.11827E-02
A12= -0.18803E-01 A8= -0.97905E-03
A10= 0.89522E-04
A12= 0.16991E-05
A14= -0.49666E-07
単レンズデータ
レンズ 始面 焦点距離(mm)
1 2 2.946
2 4 -5.075
3 6 17.886
4 8 -21.825
5 10 1.976
6 12 -1.663
[Table 3]
Example 3
f = 3.68mm fB = 0.42mm F = 1.84 2Y = 5.842mm
ENTP = 0mm EXTP = -2.18mm H1 = -1.51mm H2 = -3.26mm
Surface number R (mm) D (mm) Nd νd Effective radius (mm)
1 (Aperture) ∞ -0.29 1.00
2 * 1.599 0.58 1.54890 50.3 1.00
3 * 123.386 0.08 0.94
4 * 20.225 0.15 1.67750 20.1 0.90
5 * 2.930 0.48 0.82
6 * 8.071 0.34 1.54470 56.2 0.76
7 * 46.334 0.11 0.72
8 * 14.675 0.20 1.63470 23.9 0.70
9 * 7.088 0.39 0.68
10 * -22.390 0.68 1.54470 56.2 0.58
11 * -1.038 0.33 0.48
12 * -4.171 0.33 1.51530 56.6 0.24
13 * 1.107 0.40 0.13
14 ∞ 0.11 1.51630 64.1 0.07
15 ∞ 0.10
Aspheric coefficient
2nd side 8th side
K = 0.90136E-01 K = 0.0
A4 = 0.62088E-02 A4 = -0.12171E + 00
A6 = -0.31031E-03 A6 = -0.18544E-01
A8 = -0.91505E-02 A8 = -0.21266E-02
A10 = 0.16634E-01 A10 = -0.51285E-02
A12 = 0.87033E-02 A12 = 0.64902E-02
A14 = -0.21104E-01
3rd side 9th side
K = -0.17429E + 02 K = -0.23270E + 02
A4 = 0.10420E-01 A3 = 0.93551E-02
A6 = 0.16472E-01 A4 = -0.14221E + 00
A8 = 0.99197E-02 A5 = 0.20010E-01
A10 = -0.35411E-01 A6 = -0.11598E-01
A12 = -0.28804E-01 A8 = -0.11738E-01
A14 = 0.24644E-01 A10 = 0.70468E-02
A12 = -0.32261E-02
A14 = 0.31645E-02
4th page 10th page
K = -0.79883E + 02 K = 0.80000E + 02
A4 = -0.37041E-01 A3 = -0.74349E-01
A6 = 0.12556E + 00 A4 = 0.15344E + 00
A8 = -0.66051E-01 A5 = -0.14053E + 00
A10 = -0.47567E-01 A6 = -0.10310E-01
A12 = 0.15305E-01 A8 = 0.36495E-01
A14 = 0.28341E-01 A10 = -0.12425E-01
A12 = -0.70941E-02
A14 = 0.32450E-02
5th surface 11th surface
K = -0.15300E + 02 K = -0.55642E + 01
A3 = -0.18666E-01 A3 = -0.10000E + 00
A4 = 0.83056E-01 A4 = -0.33235E-01
A5 = -0.28818E-01 A5 = 0.21592E-01
A6 = 0.54738E-01 A6 = 0.24639E-01
A8 = 0.15866E-01 A8 = -0.13269E-01
A10 = -0.19605E-01 A10 = 0.14174E-02
A12 = -0.45484E-01 A12 = 0.12894E-02
A14 = 0.74296E-01 A14 = -0.32676E-03
6th page 12th page
K = 0.51365E + 02 K = -0.77089E + 00
A3 = -0.59682E-02 A3 = -0.10220E + 00
A4 = -0.25343E-01 A4 = 0.31977E-02
A5 = -0.94375E-01 A5 = 0.85425E-02
A6 = 0.11983E-01 A6 = 0.77410E-02
A8 = 0.45669E-02 A8 = -0.14940E-03
A10 = -0.31903E-01 A10 = -0.15309E-03
A12 = -0.57207E-02 A12 = 0.53890E-05
A14 = 0.42809E-02 A14 = 0.73836E-06
7th 13th
K = 0.0 K = -0.76119E + 01
A4 = -0.15724E-01 A3 = -0.97006E-01
A6 = -0.67167E-01 A4 = 0.17677E-01
A8 = -0.15241E-01 A5 = 0.59811E-02
A10 = 0.25420E-01 A6 = -0.11827E-02
A12 = -0.18803E-01 A8 = -0.97905E-03
A10 = 0.89522E-04
A12 = 0.16991E-05
A14 = -0.49666E-07
Single lens data
Lens Start surface Focal length (mm)
1 2 2.946
2 4 -5.075
3 6 17.886
4 8 -21.825
5 10 1.976
6 12 -1.663
図9は実施例3のレンズの断面図である。図中、正の屈折力を有し光軸近傍で物体側に凸面を向け、像側面よりも物体側面の方が強い曲率を有する第1レンズL1、負の屈折力を有する第2レンズL2、正の屈折力を有する第3レンズL3、負の屈折力を有する第4レンズL4、正の屈折力を有する第5レンズL5、負の屈折力を有し光軸近傍で像側に凹面を向けた第6レンズL6、からなる。Fナンバーは1.84である。開口絞りSは、第1レンズL1の物体側面の有効径より物体側に配置されている。Iは撮像面を示す。また、Fは光学的ローパスフィルタやIRカットフィルタ、固体撮像素子のシールガラス等を想定した平行平板である。図10は実施例3の収差図(球面収差(a)、非点収差(b)、歪曲収差(c)、メリディオナルコマ収差図(d))である。
FIG. 9 is a sectional view of the lens of Example 3. In the figure, a first lens L1 having a positive refractive power and a convex surface facing the object side in the vicinity of the optical axis and having a curvature that is stronger on the object side surface than on the image side surface, a second lens L2 having a negative refractive power, A third lens L3 having a positive refractive power, a fourth lens L4 having a negative refractive power, a fifth lens L5 having a positive refractive power, and having a negative refractive power and a concave surface facing the image side in the vicinity of the optical axis The sixth lens L6. The F number is 1.84. The aperture stop S is disposed closer to the object side than the effective diameter of the object side surface of the first lens L1. I indicates an imaging surface. Further, F is a parallel plate assuming an optical low-pass filter, an IR cut filter, a seal glass of a solid-state image sensor, or the like. FIG. 10 is an aberration diagram of Example 3 (spherical aberration (a), astigmatism (b), distortion (c), and meridional coma aberration (d)).
(実施例4)
実施例4の撮像レンズのレンズデータを、表4に示す。 Example 4
Table 4 shows lens data of the imaging lens of Example 4.
実施例4の撮像レンズのレンズデータを、表4に示す。 Example 4
Table 4 shows lens data of the imaging lens of Example 4.
[表4]
実施例4
f=3.68mm fB=0.3mm F=1.86 2Y=5.842mm
ENTP=0mm EXTP=-2.26mm H1=-1.62mm H2=-3.38mm
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1(絞り) ∞ -0.33 0.99
2* 1.574 0.55 1.54470 56.2 1.05
3* 22.259 0.08 1.05
4* 9.865 0.15 1.63470 23.9 1.04
5* 2.638 0.40 0.99
6* 8.320 0.43 1.54470 56.2 1.04
7* 115.518 0.21 1.16
8* 58.683 0.26 1.63470 23.9 1.19
9* 9.787 0.27 1.37
10* -62.209 0.73 1.54470 56.2 1.45
11* -1.091 0.38 1.70
12* -3.646 0.23 1.54470 56.2 2.36
13* 1.273 0.49 2.59
14 ∞ 0.11 1.51630 64.1 2.87
15 ∞ 2.90
非球面係数
第2面 第8面
K= 0.10282E+00 K= 0.0
A4= 0.50077E-02 A4= -0.14308E+00
A6= -0.16639E-04 A6= -0.24846E-01
A8= -0.75861E-02 A8= -0.53479E-02
A10= 0.14284E-01 A10= 0.48472E-02
A12= 0.80568E-02 A12= -0.72624E-03
A14= -0.17859E-01
第3面 第9面
K= 0.78869E+02 K= -0.80000E+02
A4= 0.10225E-01 A3= 0.16404E-01
A6= 0.14362E-01 A4= -0.15977E+00
A8= 0.12681E-01 A5= 0.18467E-01
A10= -0.28880E-01 A6= 0.35902E-02
A12= -0.23698E-01 A8= -0.70663E-02
A14= 0.16254E-01 A10= 0.29704E-02
A12= -0.29238E-02
A14= 0.25366E-02
第4面 第10面
K= -0.80000E+02 K= 0.80000E+02
A4= -0.30197E-01 A3= -0.51645E-01
A6= 0.12161E+00 A4= 0.53889E-01
A8= -0.51946E-01 A5= -0.11885E+00
A10= -0.50088E-01 A6= 0.92526E-02
A12= 0.55608E-02 A8= 0.29919E-01
A14= 0.27505E-01 A10= -0.13066E-01
A12= -0.58796E-02
A14= 0.34011E-02
第5面 第11面
K= -0.16938E+02 K= -0.63594E+01
A4= 0.69576E-01 A3= -0.11351E+00
A6= 0.52759E-01 A4= -0.32515E-01
A8= -0.53316E-02 A5= 0.18679E-01
A10= -0.13632E-01 A6= 0.18346E-01
A12= -0.22016E-01 A8= -0.99971E-02
A14= 0.53342E-01 A10= 0.19888E-02
A12= 0.10348E-02
A14= -0.32439E-03
第6面 第12面
K= 0.56320E+02 K= -0.19161E+01
A3= -0.15394E-01 A3= -0.85741E-01
A4= -0.25711E-01 A4= 0.69095E-02
A5= -0.79268E-01 A5= 0.76892E-02
A6= 0.14590E-01 A6= 0.61694E-02
A8= 0.25814E-02 A8= -0.19138E-03
A10= -0.14865E-01 A10= -0.11753E-03
A12= -0.64426E-02 A12= 0.59722E-05
A14= -0.19014E-02 A14= 0.38901E-06
第7面 第13面
K= 0.0 K= -0.87609E+01
A4= -0.70691E-01 A3= -0.93249E-01
A6= -0.50026E-01 A4= 0.24764E-01
A8= -0.23068E-02 A5= -0.39222E-04
A10= 0.13138E-01 A6= -0.13579E-02
A12= -0.15968E-01 A8= -0.27480E-03
A10= 0.71990E-04
A12= -0.75005E-05
A14= 0.55560E-06
単レンズデータ
レンズ 始面 焦点距離(mm)
1 2 3.080
2 4 -5.718
3 6 16.437
4 8 -18.546
5 10 2.030
6 12 -1.703
[Table 4]
Example 4
f = 3.68mm fB = 0.3mm F = 1.86 2Y = 5.842mm
ENTP = 0mm EXTP = -2.26mm H1 = -1.62mm H2 = -3.38mm
Surface number R (mm) D (mm) Nd νd Effective radius (mm)
1 (Aperture) ∞ -0.33 0.99
2 * 1.574 0.55 1.54470 56.2 1.05
3 * 22.259 0.08 1.05
4 * 9.865 0.15 1.63470 23.9 1.04
5 * 2.638 0.40 0.99
6 * 8.320 0.43 1.54470 56.2 1.04
7 * 115.518 0.21 1.16
8 * 58.683 0.26 1.63470 23.9 1.19
9 * 9.787 0.27 1.37
10 * -62.209 0.73 1.54470 56.2 1.45
11 * -1.091 0.38 1.70
12 * -3.646 0.23 1.54470 56.2 2.36
13 * 1.273 0.49 2.59
14 ∞ 0.11 1.51630 64.1 2.87
15 ∞ 2.90
Aspheric coefficient
2nd side 8th side
K = 0.10282E + 00 K = 0.0
A4 = 0.50077E-02 A4 = -0.14308E + 00
A6 = -0.16639E-04 A6 = -0.24846E-01
A8 = -0.75861E-02 A8 = -0.53479E-02
A10 = 0.14284E-01 A10 = 0.48472E-02
A12 = 0.80568E-02 A12 = -0.72624E-03
A14 = -0.17859E-01
3rd side 9th side
K = 0.78869E + 02 K = -0.80000E + 02
A4 = 0.10225E-01 A3 = 0.16404E-01
A6 = 0.14362E-01 A4 = -0.15977E + 00
A8 = 0.12681E-01 A5 = 0.18467E-01
A10 = -0.28880E-01 A6 = 0.35902E-02
A12 = -0.23698E-01 A8 = -0.70663E-02
A14 = 0.16254E-01 A10 = 0.29704E-02
A12 = -0.29238E-02
A14 = 0.25366E-02
4th page 10th page
K = -0.80000E + 02 K = 0.80000E + 02
A4 = -0.30197E-01 A3 = -0.51645E-01
A6 = 0.12161E + 00 A4 = 0.53889E-01
A8 = -0.51946E-01 A5 = -0.11885E + 00
A10 = -0.50088E-01 A6 = 0.92526E-02
A12 = 0.55608E-02 A8 = 0.29919E-01
A14 = 0.27505E-01 A10 = -0.13066E-01
A12 = -0.58796E-02
A14 = 0.34011E-02
5th surface 11th surface
K = -0.16938E + 02 K = -0.63594E + 01
A4 = 0.69576E-01 A3 = -0.11351E + 00
A6 = 0.52759E-01 A4 = -0.32515E-01
A8 = -0.53316E-02 A5 = 0.18679E-01
A10 = -0.13632E-01 A6 = 0.18346E-01
A12 = -0.22016E-01 A8 = -0.99971E-02
A14 = 0.53342E-01 A10 = 0.19888E-02
A12 = 0.10348E-02
A14 = -0.32439E-03
6th page 12th page
K = 0.56320E + 02 K = -0.19161E + 01
A3 = -0.15394E-01 A3 = -0.85741E-01
A4 = -0.25711E-01 A4 = 0.69095E-02
A5 = -0.79268E-01 A5 = 0.76892E-02
A6 = 0.14590E-01 A6 = 0.61694E-02
A8 = 0.25814E-02 A8 = -0.19138E-03
A10 = -0.14865E-01 A10 = -0.11753E-03
A12 = -0.64426E-02 A12 = 0.59722E-05
A14 = -0.19014E-02 A14 = 0.38901E-06
7th 13th
K = 0.0 K = -0.87609E + 01
A4 = -0.70691E-01 A3 = -0.93249E-01
A6 = -0.50026E-01 A4 = 0.24764E-01
A8 = -0.23068E-02 A5 = -0.39222E-04
A10 = 0.13138E-01 A6 = -0.13579E-02
A12 = -0.15968E-01 A8 = -0.27480E-03
A10 = 0.71990E-04
A12 = -0.75005E-05
A14 = 0.55560E-06
Single lens data
Lens Start surface Focal length (mm)
1 2 3.080
2 4 -5.718
3 6 16.437
4 8 -18.546
5 10 2.030
6 12 -1.703
実施例4
f=3.68mm fB=0.3mm F=1.86 2Y=5.842mm
ENTP=0mm EXTP=-2.26mm H1=-1.62mm H2=-3.38mm
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1(絞り) ∞ -0.33 0.99
2* 1.574 0.55 1.54470 56.2 1.05
3* 22.259 0.08 1.05
4* 9.865 0.15 1.63470 23.9 1.04
5* 2.638 0.40 0.99
6* 8.320 0.43 1.54470 56.2 1.04
7* 115.518 0.21 1.16
8* 58.683 0.26 1.63470 23.9 1.19
9* 9.787 0.27 1.37
10* -62.209 0.73 1.54470 56.2 1.45
11* -1.091 0.38 1.70
12* -3.646 0.23 1.54470 56.2 2.36
13* 1.273 0.49 2.59
14 ∞ 0.11 1.51630 64.1 2.87
15 ∞ 2.90
非球面係数
第2面 第8面
K= 0.10282E+00 K= 0.0
A4= 0.50077E-02 A4= -0.14308E+00
A6= -0.16639E-04 A6= -0.24846E-01
A8= -0.75861E-02 A8= -0.53479E-02
A10= 0.14284E-01 A10= 0.48472E-02
A12= 0.80568E-02 A12= -0.72624E-03
A14= -0.17859E-01
第3面 第9面
K= 0.78869E+02 K= -0.80000E+02
A4= 0.10225E-01 A3= 0.16404E-01
A6= 0.14362E-01 A4= -0.15977E+00
A8= 0.12681E-01 A5= 0.18467E-01
A10= -0.28880E-01 A6= 0.35902E-02
A12= -0.23698E-01 A8= -0.70663E-02
A14= 0.16254E-01 A10= 0.29704E-02
A12= -0.29238E-02
A14= 0.25366E-02
第4面 第10面
K= -0.80000E+02 K= 0.80000E+02
A4= -0.30197E-01 A3= -0.51645E-01
A6= 0.12161E+00 A4= 0.53889E-01
A8= -0.51946E-01 A5= -0.11885E+00
A10= -0.50088E-01 A6= 0.92526E-02
A12= 0.55608E-02 A8= 0.29919E-01
A14= 0.27505E-01 A10= -0.13066E-01
A12= -0.58796E-02
A14= 0.34011E-02
第5面 第11面
K= -0.16938E+02 K= -0.63594E+01
A4= 0.69576E-01 A3= -0.11351E+00
A6= 0.52759E-01 A4= -0.32515E-01
A8= -0.53316E-02 A5= 0.18679E-01
A10= -0.13632E-01 A6= 0.18346E-01
A12= -0.22016E-01 A8= -0.99971E-02
A14= 0.53342E-01 A10= 0.19888E-02
A12= 0.10348E-02
A14= -0.32439E-03
第6面 第12面
K= 0.56320E+02 K= -0.19161E+01
A3= -0.15394E-01 A3= -0.85741E-01
A4= -0.25711E-01 A4= 0.69095E-02
A5= -0.79268E-01 A5= 0.76892E-02
A6= 0.14590E-01 A6= 0.61694E-02
A8= 0.25814E-02 A8= -0.19138E-03
A10= -0.14865E-01 A10= -0.11753E-03
A12= -0.64426E-02 A12= 0.59722E-05
A14= -0.19014E-02 A14= 0.38901E-06
第7面 第13面
K= 0.0 K= -0.87609E+01
A4= -0.70691E-01 A3= -0.93249E-01
A6= -0.50026E-01 A4= 0.24764E-01
A8= -0.23068E-02 A5= -0.39222E-04
A10= 0.13138E-01 A6= -0.13579E-02
A12= -0.15968E-01 A8= -0.27480E-03
A10= 0.71990E-04
A12= -0.75005E-05
A14= 0.55560E-06
単レンズデータ
レンズ 始面 焦点距離(mm)
1 2 3.080
2 4 -5.718
3 6 16.437
4 8 -18.546
5 10 2.030
6 12 -1.703
[Table 4]
Example 4
f = 3.68mm fB = 0.3mm F = 1.86 2Y = 5.842mm
ENTP = 0mm EXTP = -2.26mm H1 = -1.62mm H2 = -3.38mm
Surface number R (mm) D (mm) Nd νd Effective radius (mm)
1 (Aperture) ∞ -0.33 0.99
2 * 1.574 0.55 1.54470 56.2 1.05
3 * 22.259 0.08 1.05
4 * 9.865 0.15 1.63470 23.9 1.04
5 * 2.638 0.40 0.99
6 * 8.320 0.43 1.54470 56.2 1.04
7 * 115.518 0.21 1.16
8 * 58.683 0.26 1.63470 23.9 1.19
9 * 9.787 0.27 1.37
10 * -62.209 0.73 1.54470 56.2 1.45
11 * -1.091 0.38 1.70
12 * -3.646 0.23 1.54470 56.2 2.36
13 * 1.273 0.49 2.59
14 ∞ 0.11 1.51630 64.1 2.87
15 ∞ 2.90
Aspheric coefficient
2nd side 8th side
K = 0.10282E + 00 K = 0.0
A4 = 0.50077E-02 A4 = -0.14308E + 00
A6 = -0.16639E-04 A6 = -0.24846E-01
A8 = -0.75861E-02 A8 = -0.53479E-02
A10 = 0.14284E-01 A10 = 0.48472E-02
A12 = 0.80568E-02 A12 = -0.72624E-03
A14 = -0.17859E-01
3rd side 9th side
K = 0.78869E + 02 K = -0.80000E + 02
A4 = 0.10225E-01 A3 = 0.16404E-01
A6 = 0.14362E-01 A4 = -0.15977E + 00
A8 = 0.12681E-01 A5 = 0.18467E-01
A10 = -0.28880E-01 A6 = 0.35902E-02
A12 = -0.23698E-01 A8 = -0.70663E-02
A14 = 0.16254E-01 A10 = 0.29704E-02
A12 = -0.29238E-02
A14 = 0.25366E-02
4th page 10th page
K = -0.80000E + 02 K = 0.80000E + 02
A4 = -0.30197E-01 A3 = -0.51645E-01
A6 = 0.12161E + 00 A4 = 0.53889E-01
A8 = -0.51946E-01 A5 = -0.11885E + 00
A10 = -0.50088E-01 A6 = 0.92526E-02
A12 = 0.55608E-02 A8 = 0.29919E-01
A14 = 0.27505E-01 A10 = -0.13066E-01
A12 = -0.58796E-02
A14 = 0.34011E-02
5th surface 11th surface
K = -0.16938E + 02 K = -0.63594E + 01
A4 = 0.69576E-01 A3 = -0.11351E + 00
A6 = 0.52759E-01 A4 = -0.32515E-01
A8 = -0.53316E-02 A5 = 0.18679E-01
A10 = -0.13632E-01 A6 = 0.18346E-01
A12 = -0.22016E-01 A8 = -0.99971E-02
A14 = 0.53342E-01 A10 = 0.19888E-02
A12 = 0.10348E-02
A14 = -0.32439E-03
6th page 12th page
K = 0.56320E + 02 K = -0.19161E + 01
A3 = -0.15394E-01 A3 = -0.85741E-01
A4 = -0.25711E-01 A4 = 0.69095E-02
A5 = -0.79268E-01 A5 = 0.76892E-02
A6 = 0.14590E-01 A6 = 0.61694E-02
A8 = 0.25814E-02 A8 = -0.19138E-03
A10 = -0.14865E-01 A10 = -0.11753E-03
A12 = -0.64426E-02 A12 = 0.59722E-05
A14 = -0.19014E-02 A14 = 0.38901E-06
7th 13th
K = 0.0 K = -0.87609E + 01
A4 = -0.70691E-01 A3 = -0.93249E-01
A6 = -0.50026E-01 A4 = 0.24764E-01
A8 = -0.23068E-02 A5 = -0.39222E-04
A10 = 0.13138E-01 A6 = -0.13579E-02
A12 = -0.15968E-01 A8 = -0.27480E-03
A10 = 0.71990E-04
A12 = -0.75005E-05
A14 = 0.55560E-06
Single lens data
Lens Start surface Focal length (mm)
1 2 3.080
2 4 -5.718
3 6 16.437
4 8 -18.546
5 10 2.030
6 12 -1.703
図11は実施例4のレンズの断面図である。図中、正の屈折力を有し光軸近傍で物体側に凸面を向け、像側面よりも物体側面の方が強い曲率を有する第1レンズL1、負の屈折力を有する第2レンズL2、正の屈折力を有する第3レンズL3、負の屈折力を有する第4レンズL4、正の屈折力を有する第5レンズL5、負の屈折力を有し光軸近傍で像側に凹面を向けた第6レンズL6、からなる。Fナンバーは1.86である。開口絞りSは、第1レンズL1の物体側面の有効径より物体側に配置されている。Iは撮像面を示す。また、Fは光学的ローパスフィルタやIRカットフィルタ、固体撮像素子のシールガラス等を想定した平行平板である。図12は実施例4の収差図(球面収差(a)、非点収差(b)、歪曲収差(c)、メリディオナルコマ収差図(d))である。
FIG. 11 is a sectional view of the lens of Example 4. In the figure, a first lens L1 having a positive refractive power and a convex surface facing the object side in the vicinity of the optical axis and having a curvature that is stronger on the object side surface than on the image side surface, a second lens L2 having a negative refractive power, A third lens L3 having a positive refractive power, a fourth lens L4 having a negative refractive power, a fifth lens L5 having a positive refractive power, and having a negative refractive power and a concave surface facing the image side in the vicinity of the optical axis The sixth lens L6. The F number is 1.86. The aperture stop S is disposed closer to the object side than the effective diameter of the object side surface of the first lens L1. I indicates an imaging surface. Further, F is a parallel plate assuming an optical low-pass filter, an IR cut filter, a seal glass of a solid-state image sensor, or the like. FIG. 12 is an aberration diagram of Example 4 (spherical aberration (a), astigmatism (b), distortion (c), and meridional coma aberration (d)).
(実施例5)
実施例5の撮像レンズのレンズデータを、表5に示す。 (Example 5)
Table 5 shows lens data of the imaging lens of Example 5.
実施例5の撮像レンズのレンズデータを、表5に示す。 (Example 5)
Table 5 shows lens data of the imaging lens of Example 5.
[表5]
実施例5
f=3.56mm fB=0.16mm F=1.65 2Y=5.842mm
ENTP=0mm EXTP=-2.36mm H1=-1.49mm H2=-3.41mm
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1(絞り) ∞ -0.32 1.08
2* 1.703 0.55 1.54470 56.2 1.08
3* -229.504 0.05 1.02
4* 4.175 0.15 1.63470 23.9 1.03
5* 1.789 0.47 1.02
6* 25.184 0.50 1.77250 49.5 1.09
7* -9.595 0.23 1.23
8* 6.387 0.20 1.63470 23.9 1.25
9* 3.675 0.42 1.39
10* -101.489 0.44 1.77250 49.5 1.56
11* -2.236 0.66 1.74
12* -3.067 0.31 1.54470 56.2 2.28
13* 2.608 0.40 2.51
14 ∞ 0.11 1.51630 64.1 3.00
15 ∞ 3.00
非球面係数
第2面 第8面
K= 0.15991E+00 K= -0.50593E+02
A4= 0.55423E-02 A3= -0.94510E-01
A6= -0.44549E-03 A4= -0.18138E+00
A8= -0.84127E-05 A5= 0.13267E-01
A10= 0.73967E-03 A6= 0.84246E-02
A12= 0.17638E-02 A8= -0.48239E-02
A14= -0.73550E-03 A10= -0.61201E-03
A12= 0.54320E-02
第3面 第9面
K= -0.80000E+02 K= -0.80000E+02
A4= 0.40098E-01 A3= -0.18600E-01
A6= -0.16496E-01 A4= -0.14612E+00
A8= 0.77773E-02 A5= -0.13597E-02
A10= 0.25629E-02 A6= 0.86655E-02
A12= -0.75795E-03 A8= 0.65943E-02
A14= -0.19036E-02 A10= -0.98825E-03
A12= -0.14005E-02
A14= 0.15273E-02
第4面 第10面
K= -0.80000E+02 K= -0.80000E+02
A4= -0.17633E-01 A3= -0.52035E-01
A6= 0.42447E-01 A4= 0.56611E-01
A8= -0.85652E-02 A5= -0.46635E-01
A10= 0.25604E-03 A6= -0.14548E-02
A12= 0.25906E-02 A8= -0.32705E-04
A14= -0.42292E-02 A10= -0.81689E-03
A12= -0.56922E-04
A14= -0.81130E-04
第5面 第11面
K= -0.68329E+01 K= -0.94646E+01
A3= -0.39263E-01 A3= -0.52721E-01
A4= 0.54266E-01 A4= -0.18143E-01
A5= -0.23027E-01 A5= 0.90387E-02
A6= 0.47011E-01 A6= 0.38540E-02
A8= 0.22065E-01 A8= -0.24205E-03
A10= -0.14406E-01 A10= -0.34012E-03
A12= 0.32416E-03 A12= -0.69904E-04
A14= 0.77267E-02 A14= 0.18100E-04
第6面 第12面
K= 0.59835E+02 K= -0.16325E+01
A3= -0.15608E-01 A3= -0.17429E+00
A4= 0.15523E-01 A4= 0.27513E-01
A5= -0.78098E-01 A5= 0.15941E-01
A6= 0.87948E-02 A6= 0.61049E-02
A8= 0.16705E-01 A8= -0.24183E-03
A10= -0.93955E-02 A10= -0.12498E-03
A12= -0.99252E-02 A12= -0.11756E-04
A14= 0.56624E-02 A14= 0.27433E-05
第7面 第13面
K= 0.51010E+02 K= -0.44413E+02
A3= -0.19386E-01 A3= -0.60792E-01
A4= -0.44788E-01 A4= -0.72772E-02
A5= 0.11236E-01 A5= 0.54928E-02
A6= -0.34916E-01 A6= 0.73145E-05
A8= -0.44265E-02 A8= -0.21514E-03
A10= 0.12574E-01 A10= -0.31667E-04
A12= -0.68618E-02 A12= -0.21883E-05
A14= 0.12846E-05
単レンズデータ
レンズ 始面 焦点距離(mm)
1 2 3.107
2 4 -5.054
3 6 9.051
4 8 -14.037
5 10 2.955
6 12 -2.539
[Table 5]
Example 5
f = 3.56mm fB = 0.16mm F = 1.65 2Y = 5.842mm
ENTP = 0mm EXTP = -2.36mm H1 = -1.49mm H2 = -3.41mm
Surface number R (mm) D (mm) Nd νd Effective radius (mm)
1 (Aperture) ∞ -0.32 1.08
2 * 1.703 0.55 1.54470 56.2 1.08
3 * -229.504 0.05 1.02
4 * 4.175 0.15 1.63470 23.9 1.03
5 * 1.789 0.47 1.02
6 * 25.184 0.50 1.77250 49.5 1.09
7 * -9.595 0.23 1.23
8 * 6.387 0.20 1.63470 23.9 1.25
9 * 3.675 0.42 1.39
10 * -101.489 0.44 1.77250 49.5 1.56
11 * -2.236 0.66 1.74
12 * -3.067 0.31 1.54470 56.2 2.28
13 * 2.608 0.40 2.51
14 ∞ 0.11 1.51630 64.1 3.00
15 ∞ 3.00
Aspheric coefficient
2nd side 8th side
K = 0.15991E + 00 K = -0.50593E + 02
A4 = 0.55423E-02 A3 = -0.94510E-01
A6 = -0.44549E-03 A4 = -0.18138E + 00
A8 = -0.84127E-05 A5 = 0.13267E-01
A10 = 0.73967E-03 A6 = 0.84246E-02
A12 = 0.17638E-02 A8 = -0.48239E-02
A14 = -0.73550E-03 A10 = -0.61201E-03
A12 = 0.54320E-02
3rd side 9th side
K = -0.80000E + 02 K = -0.80000E + 02
A4 = 0.40098E-01 A3 = -0.18600E-01
A6 = -0.16496E-01 A4 = -0.14612E + 00
A8 = 0.77773E-02 A5 = -0.13597E-02
A10 = 0.25629E-02 A6 = 0.86655E-02
A12 = -0.75795E-03 A8 = 0.65943E-02
A14 = -0.19036E-02 A10 = -0.98825E-03
A12 = -0.14005E-02
A14 = 0.15273E-02
4th page 10th page
K = -0.80000E + 02 K = -0.80000E + 02
A4 = -0.17633E-01 A3 = -0.52035E-01
A6 = 0.42447E-01 A4 = 0.56611E-01
A8 = -0.85652E-02 A5 = -0.46635E-01
A10 = 0.25604E-03 A6 = -0.14548E-02
A12 = 0.25906E-02 A8 = -0.32705E-04
A14 = -0.42292E-02 A10 = -0.81689E-03
A12 = -0.56922E-04
A14 = -0.81130E-04
5th surface 11th surface
K = -0.68329E + 01 K = -0.94646E + 01
A3 = -0.39263E-01 A3 = -0.52721E-01
A4 = 0.54266E-01 A4 = -0.18143E-01
A5 = -0.23027E-01 A5 = 0.90387E-02
A6 = 0.47011E-01 A6 = 0.38540E-02
A8 = 0.22065E-01 A8 = -0.24205E-03
A10 = -0.14406E-01 A10 = -0.34012E-03
A12 = 0.32416E-03 A12 = -0.69904E-04
A14 = 0.77267E-02 A14 = 0.18100E-04
6th page 12th page
K = 0.59835E + 02 K = -0.16325E + 01
A3 = -0.15608E-01 A3 = -0.17429E + 00
A4 = 0.15523E-01 A4 = 0.27513E-01
A5 = -0.78098E-01 A5 = 0.15941E-01
A6 = 0.87948E-02 A6 = 0.61049E-02
A8 = 0.16705E-01 A8 = -0.24183E-03
A10 = -0.93955E-02 A10 = -0.12498E-03
A12 = -0.99252E-02 A12 = -0.11756E-04
A14 = 0.56624E-02 A14 = 0.27433E-05
7th 13th
K = 0.51010E + 02 K = -0.44413E + 02
A3 = -0.19386E-01 A3 = -0.60792E-01
A4 = -0.44788E-01 A4 = -0.72772E-02
A5 = 0.11236E-01 A5 = 0.54928E-02
A6 = -0.34916E-01 A6 = 0.73145E-05
A8 = -0.44265E-02 A8 = -0.21514E-03
A10 = 0.12574E-01 A10 = -0.31667E-04
A12 = -0.68618E-02 A12 = -0.21883E-05
A14 = 0.12846E-05
Single lens data
Lens Start surface Focal length (mm)
1 2 3.107
2 4 -5.054
3 6 9.051
4 8 -14.037
5 10 2.955
6 12 -2.539
実施例5
f=3.56mm fB=0.16mm F=1.65 2Y=5.842mm
ENTP=0mm EXTP=-2.36mm H1=-1.49mm H2=-3.41mm
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1(絞り) ∞ -0.32 1.08
2* 1.703 0.55 1.54470 56.2 1.08
3* -229.504 0.05 1.02
4* 4.175 0.15 1.63470 23.9 1.03
5* 1.789 0.47 1.02
6* 25.184 0.50 1.77250 49.5 1.09
7* -9.595 0.23 1.23
8* 6.387 0.20 1.63470 23.9 1.25
9* 3.675 0.42 1.39
10* -101.489 0.44 1.77250 49.5 1.56
11* -2.236 0.66 1.74
12* -3.067 0.31 1.54470 56.2 2.28
13* 2.608 0.40 2.51
14 ∞ 0.11 1.51630 64.1 3.00
15 ∞ 3.00
非球面係数
第2面 第8面
K= 0.15991E+00 K= -0.50593E+02
A4= 0.55423E-02 A3= -0.94510E-01
A6= -0.44549E-03 A4= -0.18138E+00
A8= -0.84127E-05 A5= 0.13267E-01
A10= 0.73967E-03 A6= 0.84246E-02
A12= 0.17638E-02 A8= -0.48239E-02
A14= -0.73550E-03 A10= -0.61201E-03
A12= 0.54320E-02
第3面 第9面
K= -0.80000E+02 K= -0.80000E+02
A4= 0.40098E-01 A3= -0.18600E-01
A6= -0.16496E-01 A4= -0.14612E+00
A8= 0.77773E-02 A5= -0.13597E-02
A10= 0.25629E-02 A6= 0.86655E-02
A12= -0.75795E-03 A8= 0.65943E-02
A14= -0.19036E-02 A10= -0.98825E-03
A12= -0.14005E-02
A14= 0.15273E-02
第4面 第10面
K= -0.80000E+02 K= -0.80000E+02
A4= -0.17633E-01 A3= -0.52035E-01
A6= 0.42447E-01 A4= 0.56611E-01
A8= -0.85652E-02 A5= -0.46635E-01
A10= 0.25604E-03 A6= -0.14548E-02
A12= 0.25906E-02 A8= -0.32705E-04
A14= -0.42292E-02 A10= -0.81689E-03
A12= -0.56922E-04
A14= -0.81130E-04
第5面 第11面
K= -0.68329E+01 K= -0.94646E+01
A3= -0.39263E-01 A3= -0.52721E-01
A4= 0.54266E-01 A4= -0.18143E-01
A5= -0.23027E-01 A5= 0.90387E-02
A6= 0.47011E-01 A6= 0.38540E-02
A8= 0.22065E-01 A8= -0.24205E-03
A10= -0.14406E-01 A10= -0.34012E-03
A12= 0.32416E-03 A12= -0.69904E-04
A14= 0.77267E-02 A14= 0.18100E-04
第6面 第12面
K= 0.59835E+02 K= -0.16325E+01
A3= -0.15608E-01 A3= -0.17429E+00
A4= 0.15523E-01 A4= 0.27513E-01
A5= -0.78098E-01 A5= 0.15941E-01
A6= 0.87948E-02 A6= 0.61049E-02
A8= 0.16705E-01 A8= -0.24183E-03
A10= -0.93955E-02 A10= -0.12498E-03
A12= -0.99252E-02 A12= -0.11756E-04
A14= 0.56624E-02 A14= 0.27433E-05
第7面 第13面
K= 0.51010E+02 K= -0.44413E+02
A3= -0.19386E-01 A3= -0.60792E-01
A4= -0.44788E-01 A4= -0.72772E-02
A5= 0.11236E-01 A5= 0.54928E-02
A6= -0.34916E-01 A6= 0.73145E-05
A8= -0.44265E-02 A8= -0.21514E-03
A10= 0.12574E-01 A10= -0.31667E-04
A12= -0.68618E-02 A12= -0.21883E-05
A14= 0.12846E-05
単レンズデータ
レンズ 始面 焦点距離(mm)
1 2 3.107
2 4 -5.054
3 6 9.051
4 8 -14.037
5 10 2.955
6 12 -2.539
[Table 5]
Example 5
f = 3.56mm fB = 0.16mm F = 1.65 2Y = 5.842mm
ENTP = 0mm EXTP = -2.36mm H1 = -1.49mm H2 = -3.41mm
Surface number R (mm) D (mm) Nd νd Effective radius (mm)
1 (Aperture) ∞ -0.32 1.08
2 * 1.703 0.55 1.54470 56.2 1.08
3 * -229.504 0.05 1.02
4 * 4.175 0.15 1.63470 23.9 1.03
5 * 1.789 0.47 1.02
6 * 25.184 0.50 1.77250 49.5 1.09
7 * -9.595 0.23 1.23
8 * 6.387 0.20 1.63470 23.9 1.25
9 * 3.675 0.42 1.39
10 * -101.489 0.44 1.77250 49.5 1.56
11 * -2.236 0.66 1.74
12 * -3.067 0.31 1.54470 56.2 2.28
13 * 2.608 0.40 2.51
14 ∞ 0.11 1.51630 64.1 3.00
15 ∞ 3.00
Aspheric coefficient
2nd side 8th side
K = 0.15991E + 00 K = -0.50593E + 02
A4 = 0.55423E-02 A3 = -0.94510E-01
A6 = -0.44549E-03 A4 = -0.18138E + 00
A8 = -0.84127E-05 A5 = 0.13267E-01
A10 = 0.73967E-03 A6 = 0.84246E-02
A12 = 0.17638E-02 A8 = -0.48239E-02
A14 = -0.73550E-03 A10 = -0.61201E-03
A12 = 0.54320E-02
3rd side 9th side
K = -0.80000E + 02 K = -0.80000E + 02
A4 = 0.40098E-01 A3 = -0.18600E-01
A6 = -0.16496E-01 A4 = -0.14612E + 00
A8 = 0.77773E-02 A5 = -0.13597E-02
A10 = 0.25629E-02 A6 = 0.86655E-02
A12 = -0.75795E-03 A8 = 0.65943E-02
A14 = -0.19036E-02 A10 = -0.98825E-03
A12 = -0.14005E-02
A14 = 0.15273E-02
4th page 10th page
K = -0.80000E + 02 K = -0.80000E + 02
A4 = -0.17633E-01 A3 = -0.52035E-01
A6 = 0.42447E-01 A4 = 0.56611E-01
A8 = -0.85652E-02 A5 = -0.46635E-01
A10 = 0.25604E-03 A6 = -0.14548E-02
A12 = 0.25906E-02 A8 = -0.32705E-04
A14 = -0.42292E-02 A10 = -0.81689E-03
A12 = -0.56922E-04
A14 = -0.81130E-04
5th surface 11th surface
K = -0.68329E + 01 K = -0.94646E + 01
A3 = -0.39263E-01 A3 = -0.52721E-01
A4 = 0.54266E-01 A4 = -0.18143E-01
A5 = -0.23027E-01 A5 = 0.90387E-02
A6 = 0.47011E-01 A6 = 0.38540E-02
A8 = 0.22065E-01 A8 = -0.24205E-03
A10 = -0.14406E-01 A10 = -0.34012E-03
A12 = 0.32416E-03 A12 = -0.69904E-04
A14 = 0.77267E-02 A14 = 0.18100E-04
6th page 12th page
K = 0.59835E + 02 K = -0.16325E + 01
A3 = -0.15608E-01 A3 = -0.17429E + 00
A4 = 0.15523E-01 A4 = 0.27513E-01
A5 = -0.78098E-01 A5 = 0.15941E-01
A6 = 0.87948E-02 A6 = 0.61049E-02
A8 = 0.16705E-01 A8 = -0.24183E-03
A10 = -0.93955E-02 A10 = -0.12498E-03
A12 = -0.99252E-02 A12 = -0.11756E-04
A14 = 0.56624E-02 A14 = 0.27433E-05
7th 13th
K = 0.51010E + 02 K = -0.44413E + 02
A3 = -0.19386E-01 A3 = -0.60792E-01
A4 = -0.44788E-01 A4 = -0.72772E-02
A5 = 0.11236E-01 A5 = 0.54928E-02
A6 = -0.34916E-01 A6 = 0.73145E-05
A8 = -0.44265E-02 A8 = -0.21514E-03
A10 = 0.12574E-01 A10 = -0.31667E-04
A12 = -0.68618E-02 A12 = -0.21883E-05
A14 = 0.12846E-05
Single lens data
Lens Start surface Focal length (mm)
1 2 3.107
2 4 -5.054
3 6 9.051
4 8 -14.037
5 10 2.955
6 12 -2.539
図13は実施例5のレンズの断面図である。図中、正の屈折力を有し光軸近傍で物体側に凸面を向け、像側面よりも物体側面の方が強い曲率を有する第1レンズL1、負の屈折力を有する第2レンズL2、正の屈折力を有する第3レンズL3、負の屈折力を有する第4レンズL4、正の屈折力を有する第5レンズL5、負の屈折力を有し光軸近傍で像側に凹面を向けた第6レンズL6、からなる。Fナンバーは1.65である。開口絞りSは、第1レンズL1の物体側面の有効径より物体側に配置されている。Iは撮像面を示す。また、Fは光学的ローパスフィルタやIRカットフィルタ、固体撮像素子のシールガラス等を想定した平行平板である。図14は実施例5の収差図(球面収差(a)、非点収差(b)、歪曲収差(c)、メリディオナルコマ収差図(d))である。
FIG. 13 is a sectional view of the lens of Example 5. In the figure, a first lens L1 having a positive refractive power and a convex surface facing the object side in the vicinity of the optical axis and having a curvature that is stronger on the object side surface than on the image side surface, a second lens L2 having a negative refractive power, A third lens L3 having a positive refractive power, a fourth lens L4 having a negative refractive power, a fifth lens L5 having a positive refractive power, and having a negative refractive power and a concave surface facing the image side in the vicinity of the optical axis The sixth lens L6. The F number is 1.65. The aperture stop S is disposed closer to the object side than the effective diameter of the object side surface of the first lens L1. I indicates an imaging surface. Further, F is a parallel plate assuming an optical low-pass filter, an IR cut filter, a seal glass of a solid-state image sensor, or the like. FIG. 14 is an aberration diagram of Example 5 (spherical aberration (a), astigmatism (b), distortion (c), and meridional coma aberration diagram (d)).
(実施例6)
実施例6の撮像レンズのレンズデータを、表6に示す。 (Example 6)
Table 6 shows lens data of the imaging lens of Example 6.
実施例6の撮像レンズのレンズデータを、表6に示す。 (Example 6)
Table 6 shows lens data of the imaging lens of Example 6.
[表6]
実施例6
f=3.35mm fB=0.15mm F=1.65 2Y=5.842mm
ENTP=0mm EXTP=-2.15mm H1=-1.5mm H2=-3.19mm
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1(絞り) ∞ -0.29 1.01
2* 1.564 0.54 1.54470 56.2 1.02
3* 614.792 0.07 0.96
4* 14.534 0.15 1.63470 23.9 0.97
5* 2.684 0.40 0.96
6* 9.735 0.41 1.54470 56.2 1.04
7* -1760.042 0.22 1.14
8* 108.143 0.20 1.63470 23.9 1.15
9* 4.956 0.18 1.32
10* 3.614 0.55 1.54470 56.2 1.55
11* -1.541 0.55 1.74
12* -1.475 0.32 1.54470 56.2 2.28
13* 4.313 0.40 2.50
14 ∞ 0.11 1.51630 64.1 3.00
15 ∞ 3.00
非球面係数
第2面 第8面
K= 0.72556E-01 K= 0.0
A4= 0.20791E-02 A4= -0.15333E+00
A6= 0.14812E-02 A6= -0.36951E-01
A8= -0.58685E-02 A8= -0.10701E-02
A10= 0.75920E-02 A10= -0.10418E-01
A12= 0.43861E-02 A12= -0.24241E-02
A14= -0.69080E-02
第3面 第9面
K= 0.80000E+02 K= -0.80000E+02
A4= 0.24666E-01 A3= -0.12490E-01
A6= -0.10702E-02 A4= -0.15608E+00
A8= 0.10499E-01 A5= -0.87260E-03
A10= -0.81495E-02 A6= -0.15361E-01
A12= -0.74559E-02 A8= -0.59767E-02
A14= 0.67307E-03 A10= 0.49169E-02
A12= 0.12483E-02
A14= 0.22352E-02
第4面 第10面
K= 0.70686E+02 K= -0.26021E+01
A4= -0.12214E-01 A3= -0.10207E+00
A6= 0.76860E-01 A4= 0.76215E-01
A8= -0.36811E-01 A5= -0.10697E+00
A10= -0.12594E-01 A6= -0.29348E-02
A12= 0.12139E-01 A8= 0.13840E-01
A14= -0.65375E-02 A10= -0.35227E-02
A12= -0.12829E-02
A14= 0.75823E-03
第5面 第11面
K= -0.76731E+01 K= -0.27950E+01
A3= -0.21213E-01 A3= 0.17218E-02
A4= 0.75427E-01 A4= -0.23019E-01
A5= -0.44615E-03 A5= 0.69989E-02
A6= 0.25218E-01 A6= 0.75162E-02
A8= 0.14536E-01 A8= -0.37553E-02
A10= 0.10164E-01 A10= 0.96280E-03
A12= -0.13167E-01 A12= 0.35804E-03
A14= 0.14364E-01 A14= -0.15223E-03
第6面 第12面
K= 0.74589E+02 K= -0.15267E+01
A3= -0.11933E-01 A3= -0.66238E-01
A4= -0.19120E-01 A4= 0.25139E-01
A5= -0.95967E-01 A5= 0.11447E-01
A6= 0.26231E-02 A6= 0.46424E-02
A8= 0.29553E-01 A8= -0.42441E-03
A10= -0.17823E-01 A10= -0.13279E-03
A12= -0.21758E-01 A12= -0.38106E-05
A14= 0.17542E-01 A14= 0.23595E-05
第7面 第13面
K= 0.0 K= -0.80000E+02
A4= -0.47416E-01 A3= -0.50311E-01
A6= -0.86362E-01 A4= 0.10229E-01
A8= -0.29910E-02 A5= 0.24123E-02
A10= 0.26459E-01 A6= -0.19398E-02
A12= -0.26301E-01 A8= -0.58071E-03
A10= 0.36271E-04
A12= 0.31198E-05
A14= 0.41258E-06
単レンズデータ
レンズ 始面 焦点距離(mm)
1 2 2.877
2 4 -5.213
3 6 17.776
4 8 -8.189
5 10 2.061
6 12 -1.979
[Table 6]
Example 6
f = 3.35mm fB = 0.15mm F = 1.65 2Y = 5.842mm
ENTP = 0mm EXTP = -2.15mm H1 = -1.5mm H2 = -3.19mm
Surface number R (mm) D (mm) Nd νd Effective radius (mm)
1 (Aperture) ∞ -0.29 1.01
2 * 1.564 0.54 1.54470 56.2 1.02
3 * 614.792 0.07 0.96
4 * 14.534 0.15 1.63470 23.9 0.97
5 * 2.684 0.40 0.96
6 * 9.735 0.41 1.54470 56.2 1.04
7 * -1760.042 0.22 1.14
8 * 108.143 0.20 1.63470 23.9 1.15
9 * 4.956 0.18 1.32
10 * 3.614 0.55 1.54470 56.2 1.55
11 * -1.541 0.55 1.74
12 * -1.475 0.32 1.54470 56.2 2.28
13 * 4.313 0.40 2.50
14 ∞ 0.11 1.51630 64.1 3.00
15 ∞ 3.00
Aspheric coefficient
2nd side 8th side
K = 0.72556E-01 K = 0.0
A4 = 0.20791E-02 A4 = -0.15333E + 00
A6 = 0.14812E-02 A6 = -0.36951E-01
A8 = -0.58685E-02 A8 = -0.10701E-02
A10 = 0.75920E-02 A10 = -0.10418E-01
A12 = 0.43861E-02 A12 = -0.24241E-02
A14 = -0.69080E-02
3rd side 9th side
K = 0.80000E + 02 K = -0.80000E + 02
A4 = 0.24666E-01 A3 = -0.12490E-01
A6 = -0.10702E-02 A4 = -0.15608E + 00
A8 = 0.10499E-01 A5 = -0.87260E-03
A10 = -0.81495E-02 A6 = -0.15361E-01
A12 = -0.74559E-02 A8 = -0.59767E-02
A14 = 0.67307E-03 A10 = 0.49169E-02
A12 = 0.12483E-02
A14 = 0.22352E-02
4th page 10th page
K = 0.70686E + 02 K = -0.26021E + 01
A4 = -0.12214E-01 A3 = -0.10207E + 00
A6 = 0.76860E-01 A4 = 0.76215E-01
A8 = -0.36811E-01 A5 = -0.10697E + 00
A10 = -0.12594E-01 A6 = -0.29348E-02
A12 = 0.12139E-01 A8 = 0.13840E-01
A14 = -0.65375E-02 A10 = -0.35227E-02
A12 = -0.12829E-02
A14 = 0.75823E-03
5th surface 11th surface
K = -0.76731E + 01 K = -0.27950E + 01
A3 = -0.21213E-01 A3 = 0.17218E-02
A4 = 0.75427E-01 A4 = -0.23019E-01
A5 = -0.44615E-03 A5 = 0.69989E-02
A6 = 0.25218E-01 A6 = 0.75162E-02
A8 = 0.14536E-01 A8 = -0.37553E-02
A10 = 0.10164E-01 A10 = 0.96280E-03
A12 = -0.13167E-01 A12 = 0.35804E-03
A14 = 0.14364E-01 A14 = -0.15223E-03
6th page 12th page
K = 0.74589E + 02 K = -0.15267E + 01
A3 = -0.11933E-01 A3 = -0.66238E-01
A4 = -0.19120E-01 A4 = 0.25139E-01
A5 = -0.95967E-01 A5 = 0.11447E-01
A6 = 0.26231E-02 A6 = 0.46424E-02
A8 = 0.29553E-01 A8 = -0.42441E-03
A10 = -0.17823E-01 A10 = -0.13279E-03
A12 = -0.21758E-01 A12 = -0.38106E-05
A14 = 0.17542E-01 A14 = 0.23595E-05
7th 13th
K = 0.0 K = -0.80000E + 02
A4 = -0.47416E-01 A3 = -0.50311E-01
A6 = -0.86362E-01 A4 = 0.10229E-01
A8 = -0.29910E-02 A5 = 0.24123E-02
A10 = 0.26459E-01 A6 = -0.19398E-02
A12 = -0.26301E-01 A8 = -0.58071E-03
A10 = 0.36271E-04
A12 = 0.31198E-05
A14 = 0.41258E-06
Single lens data
Lens Start surface Focal length (mm)
1 2 2.877
2 4 -5.213
3 6 17.776
4 8 -8.189
5 10 2.061
6 12 -1.979
実施例6
f=3.35mm fB=0.15mm F=1.65 2Y=5.842mm
ENTP=0mm EXTP=-2.15mm H1=-1.5mm H2=-3.19mm
面番号 R(mm) D(mm) Nd νd 有効半径(mm)
1(絞り) ∞ -0.29 1.01
2* 1.564 0.54 1.54470 56.2 1.02
3* 614.792 0.07 0.96
4* 14.534 0.15 1.63470 23.9 0.97
5* 2.684 0.40 0.96
6* 9.735 0.41 1.54470 56.2 1.04
7* -1760.042 0.22 1.14
8* 108.143 0.20 1.63470 23.9 1.15
9* 4.956 0.18 1.32
10* 3.614 0.55 1.54470 56.2 1.55
11* -1.541 0.55 1.74
12* -1.475 0.32 1.54470 56.2 2.28
13* 4.313 0.40 2.50
14 ∞ 0.11 1.51630 64.1 3.00
15 ∞ 3.00
非球面係数
第2面 第8面
K= 0.72556E-01 K= 0.0
A4= 0.20791E-02 A4= -0.15333E+00
A6= 0.14812E-02 A6= -0.36951E-01
A8= -0.58685E-02 A8= -0.10701E-02
A10= 0.75920E-02 A10= -0.10418E-01
A12= 0.43861E-02 A12= -0.24241E-02
A14= -0.69080E-02
第3面 第9面
K= 0.80000E+02 K= -0.80000E+02
A4= 0.24666E-01 A3= -0.12490E-01
A6= -0.10702E-02 A4= -0.15608E+00
A8= 0.10499E-01 A5= -0.87260E-03
A10= -0.81495E-02 A6= -0.15361E-01
A12= -0.74559E-02 A8= -0.59767E-02
A14= 0.67307E-03 A10= 0.49169E-02
A12= 0.12483E-02
A14= 0.22352E-02
第4面 第10面
K= 0.70686E+02 K= -0.26021E+01
A4= -0.12214E-01 A3= -0.10207E+00
A6= 0.76860E-01 A4= 0.76215E-01
A8= -0.36811E-01 A5= -0.10697E+00
A10= -0.12594E-01 A6= -0.29348E-02
A12= 0.12139E-01 A8= 0.13840E-01
A14= -0.65375E-02 A10= -0.35227E-02
A12= -0.12829E-02
A14= 0.75823E-03
第5面 第11面
K= -0.76731E+01 K= -0.27950E+01
A3= -0.21213E-01 A3= 0.17218E-02
A4= 0.75427E-01 A4= -0.23019E-01
A5= -0.44615E-03 A5= 0.69989E-02
A6= 0.25218E-01 A6= 0.75162E-02
A8= 0.14536E-01 A8= -0.37553E-02
A10= 0.10164E-01 A10= 0.96280E-03
A12= -0.13167E-01 A12= 0.35804E-03
A14= 0.14364E-01 A14= -0.15223E-03
第6面 第12面
K= 0.74589E+02 K= -0.15267E+01
A3= -0.11933E-01 A3= -0.66238E-01
A4= -0.19120E-01 A4= 0.25139E-01
A5= -0.95967E-01 A5= 0.11447E-01
A6= 0.26231E-02 A6= 0.46424E-02
A8= 0.29553E-01 A8= -0.42441E-03
A10= -0.17823E-01 A10= -0.13279E-03
A12= -0.21758E-01 A12= -0.38106E-05
A14= 0.17542E-01 A14= 0.23595E-05
第7面 第13面
K= 0.0 K= -0.80000E+02
A4= -0.47416E-01 A3= -0.50311E-01
A6= -0.86362E-01 A4= 0.10229E-01
A8= -0.29910E-02 A5= 0.24123E-02
A10= 0.26459E-01 A6= -0.19398E-02
A12= -0.26301E-01 A8= -0.58071E-03
A10= 0.36271E-04
A12= 0.31198E-05
A14= 0.41258E-06
単レンズデータ
レンズ 始面 焦点距離(mm)
1 2 2.877
2 4 -5.213
3 6 17.776
4 8 -8.189
5 10 2.061
6 12 -1.979
[Table 6]
Example 6
f = 3.35mm fB = 0.15mm F = 1.65 2Y = 5.842mm
ENTP = 0mm EXTP = -2.15mm H1 = -1.5mm H2 = -3.19mm
Surface number R (mm) D (mm) Nd νd Effective radius (mm)
1 (Aperture) ∞ -0.29 1.01
2 * 1.564 0.54 1.54470 56.2 1.02
3 * 614.792 0.07 0.96
4 * 14.534 0.15 1.63470 23.9 0.97
5 * 2.684 0.40 0.96
6 * 9.735 0.41 1.54470 56.2 1.04
7 * -1760.042 0.22 1.14
8 * 108.143 0.20 1.63470 23.9 1.15
9 * 4.956 0.18 1.32
10 * 3.614 0.55 1.54470 56.2 1.55
11 * -1.541 0.55 1.74
12 * -1.475 0.32 1.54470 56.2 2.28
13 * 4.313 0.40 2.50
14 ∞ 0.11 1.51630 64.1 3.00
15 ∞ 3.00
Aspheric coefficient
2nd side 8th side
K = 0.72556E-01 K = 0.0
A4 = 0.20791E-02 A4 = -0.15333E + 00
A6 = 0.14812E-02 A6 = -0.36951E-01
A8 = -0.58685E-02 A8 = -0.10701E-02
A10 = 0.75920E-02 A10 = -0.10418E-01
A12 = 0.43861E-02 A12 = -0.24241E-02
A14 = -0.69080E-02
3rd side 9th side
K = 0.80000E + 02 K = -0.80000E + 02
A4 = 0.24666E-01 A3 = -0.12490E-01
A6 = -0.10702E-02 A4 = -0.15608E + 00
A8 = 0.10499E-01 A5 = -0.87260E-03
A10 = -0.81495E-02 A6 = -0.15361E-01
A12 = -0.74559E-02 A8 = -0.59767E-02
A14 = 0.67307E-03 A10 = 0.49169E-02
A12 = 0.12483E-02
A14 = 0.22352E-02
4th page 10th page
K = 0.70686E + 02 K = -0.26021E + 01
A4 = -0.12214E-01 A3 = -0.10207E + 00
A6 = 0.76860E-01 A4 = 0.76215E-01
A8 = -0.36811E-01 A5 = -0.10697E + 00
A10 = -0.12594E-01 A6 = -0.29348E-02
A12 = 0.12139E-01 A8 = 0.13840E-01
A14 = -0.65375E-02 A10 = -0.35227E-02
A12 = -0.12829E-02
A14 = 0.75823E-03
5th surface 11th surface
K = -0.76731E + 01 K = -0.27950E + 01
A3 = -0.21213E-01 A3 = 0.17218E-02
A4 = 0.75427E-01 A4 = -0.23019E-01
A5 = -0.44615E-03 A5 = 0.69989E-02
A6 = 0.25218E-01 A6 = 0.75162E-02
A8 = 0.14536E-01 A8 = -0.37553E-02
A10 = 0.10164E-01 A10 = 0.96280E-03
A12 = -0.13167E-01 A12 = 0.35804E-03
A14 = 0.14364E-01 A14 = -0.15223E-03
6th page 12th page
K = 0.74589E + 02 K = -0.15267E + 01
A3 = -0.11933E-01 A3 = -0.66238E-01
A4 = -0.19120E-01 A4 = 0.25139E-01
A5 = -0.95967E-01 A5 = 0.11447E-01
A6 = 0.26231E-02 A6 = 0.46424E-02
A8 = 0.29553E-01 A8 = -0.42441E-03
A10 = -0.17823E-01 A10 = -0.13279E-03
A12 = -0.21758E-01 A12 = -0.38106E-05
A14 = 0.17542E-01 A14 = 0.23595E-05
7th 13th
K = 0.0 K = -0.80000E + 02
A4 = -0.47416E-01 A3 = -0.50311E-01
A6 = -0.86362E-01 A4 = 0.10229E-01
A8 = -0.29910E-02 A5 = 0.24123E-02
A10 = 0.26459E-01 A6 = -0.19398E-02
A12 = -0.26301E-01 A8 = -0.58071E-03
A10 = 0.36271E-04
A12 = 0.31198E-05
A14 = 0.41258E-06
Single lens data
Lens Start surface Focal length (mm)
1 2 2.877
2 4 -5.213
3 6 17.776
4 8 -8.189
5 10 2.061
6 12 -1.979
図15は実施例6のレンズの断面図である。図中、正の屈折力を有し光軸近傍で物体側に凸面を向け、像側面よりも物体側面の方が強い曲率を有する第1レンズL1、負の屈折力を有する第2レンズL2、正の屈折力を有する第3レンズL3、負の屈折力を有する第4レンズL4、正の屈折力を有する第5レンズL5、負の屈折力を有し光軸近傍で像側に凹面を向けた第6レンズL6、からなる。Fナンバーは1.65である。開口絞りSは、第1レンズL1の物体側面の有効径より物体側に配置されている。Iは撮像面を示す。また、Fは光学的ローパスフィルタやIRカットフィルタ、固体撮像素子のシールガラス等を想定した平行平板である。図16は実施例6の収差図(球面収差(a)、非点収差(b)、歪曲収差(c)、メリディオナルコマ収差図(d))である。
FIG. 15 is a sectional view of the lens of Example 6. In the figure, a first lens L1 having a positive refractive power and a convex surface facing the object side in the vicinity of the optical axis and having a curvature that is stronger on the object side surface than on the image side surface, a second lens L2 having a negative refractive power, A third lens L3 having a positive refractive power, a fourth lens L4 having a negative refractive power, a fifth lens L5 having a positive refractive power, and having a negative refractive power and a concave surface facing the image side in the vicinity of the optical axis The sixth lens L6. The F number is 1.65. The aperture stop S is disposed closer to the object side than the effective diameter of the object side surface of the first lens L1. I indicates an imaging surface. Further, F is a parallel plate assuming an optical low-pass filter, an IR cut filter, a seal glass of a solid-state image sensor, or the like. FIG. 16 is an aberration diagram of Example 6 (spherical aberration (a), astigmatism (b), distortion (c), and meridional coma aberration (d)).
各条件式に対応する各実施例の値を表7に示す。
Table 7 shows the values of each example corresponding to each conditional expression.
近年、撮像装置を低コストに且つ大量に実装する方法として、予め半田がポッティングされた基板に対し、ICチップその他の電子部品と光学素子とを載置したままリフロー処理(加熱処理)し、半田を溶融させることにより電子部品と光学素子とを基板に同時実装するという技術が提案されている。
In recent years, as a method for mounting image pickup devices at low cost and in large quantities, a reflow process (heating process) is performed on a substrate on which solder is previously potted while an IC chip and other electronic components and optical elements are placed on the substrate. A technique has been proposed in which an electronic component and an optical element are simultaneously mounted on a substrate by melting the substrate.
このようなリフロー処理を用いて実装を行うためには、電子部品と共に光学素子を約200~260度に加熱する必要があるが、このような高温下では熱可塑性樹脂を用いたレンズでは熱変形し或いは変色して、その光学性能が低下してしまうという問題点がある。このような問題を解決するための方法のひとつとして、耐熱性能に優れたガラスモールドレンズを使用し、小型化と高温環境での光学性能を両立する技術が提案されているが、熱可塑性樹脂を用いたレンズよりもコストが高いため、撮像装置の低コスト化の要求に応えられないという問題があった。
In order to perform mounting using such a reflow process, it is necessary to heat the optical element to about 200 to 260 degrees together with the electronic components. At such a high temperature, a lens using a thermoplastic resin is thermally deformed. However, there is a problem that the optical performance deteriorates due to discoloration. As one of the methods for solving such a problem, a technology has been proposed that uses a glass mold lens having excellent heat resistance and achieves both miniaturization and optical performance in a high temperature environment. Since the cost is higher than the lens used, there is a problem that it is difficult to meet the demand for cost reduction of the imaging device.
そこで、撮像レンズの材料にエネルギー硬化性樹脂を使用することで、ポリカーボネイト系やポリオレフィン系のような熱可塑性樹脂を用いたレンズに比べ、高温に曝されたときの光学性能の低下が小さいため、リフロー処理に有効であり、かつガラスモールドレンズよりも製造しやすく安価となり、撮像レンズを組み込んだ撮像装置の低コストと量産性を両立できる。なお、エネルギー硬化性樹脂とは、熱硬化性樹脂および紫外線硬化性樹脂のいずれをも指すものとする。
Therefore, by using an energy curable resin as the material of the imaging lens, since the optical performance degradation when exposed to high temperatures is small compared to a lens using a thermoplastic resin such as polycarbonate or polyolefin, It is effective for the reflow process, is easier to manufacture than a glass mold lens, is inexpensive, and can achieve both low cost and mass productivity of an imaging apparatus incorporating an imaging lens. The energy curable resin refers to both a thermosetting resin and an ultraviolet curable resin.
本発明の撮像レンズを前述のエネルギー硬化性樹脂も用いて形成しても良い。
The imaging lens of the present invention may be formed using the above-described energy curable resin.
なお、本実施例は、固体撮像素子の撮像面に入射する光束の主光線入射角については、撮像面周辺部において必ずしも十分小さい設計になっていない。しかし、最近の技術では、固体撮像素子の色フィルタやオンチップマイクロレンズアレイの配列の見直しによって、シェーディングを軽減することができるようになってきた。具体的には撮像素子の撮像面の画素ピッチに対し、色フィルタやオンチップマイクロレンズアレイの配列のピッチをわずかに小さく設定すれば、撮像面の周辺部にいくほど各画素に対し色フィルタやオンチップマイクロレンズアレイが撮像レンズ光軸側へシフトするため、斜入射の光束を効率的に各画素の受光部に導くことができる。これにより固体撮像素子で発生するシェーディングを小さく抑えることができる。本実施例は、前記要求が緩和された分について、より小型化を目指した設計例となっている。
In the present embodiment, the principal ray incident angle of the light beam incident on the imaging surface of the solid-state imaging device is not necessarily designed to be sufficiently small in the periphery of the imaging surface. However, recent techniques have made it possible to reduce shading by reviewing the arrangement of the color filters of the solid-state imaging device and the on-chip microlens array. Specifically, if the pitch of the arrangement of the color filters and the on-chip microlens array is set slightly smaller than the pixel pitch of the image pickup surface of the image pickup device, the color filter or Since the on-chip microlens array is shifted to the optical axis side of the imaging lens, the obliquely incident light beam can be efficiently guided to the light receiving portion of each pixel. Thereby, the shading which generate | occur | produces with a solid-state image sensor can be restrained small. The present embodiment is a design example aiming at further miniaturization with respect to the portion where the requirement is relaxed.
以下、好ましい態様についてまとめて説明する。
Hereinafter, preferred embodiments will be described together.
上記撮像レンズにおいて、以下の条件式を満足することが好ましい。
1.00<f1234/f<2.00 (3)
ただし、
f1234:前記第1レンズから前記第4レンズまでの合成焦点距離(mm)
f:前記撮像レンズ全系の焦点距離(mm) In the imaging lens, it is preferable that the following conditional expression is satisfied.
1.00 <f1234 / f <2.00 (3)
However,
f1234: Composite focal length from the first lens to the fourth lens (mm)
f: Focal length (mm) of the entire imaging lens system
1.00<f1234/f<2.00 (3)
ただし、
f1234:前記第1レンズから前記第4レンズまでの合成焦点距離(mm)
f:前記撮像レンズ全系の焦点距離(mm) In the imaging lens, it is preferable that the following conditional expression is satisfied.
1.00 <f1234 / f <2.00 (3)
However,
f1234: Composite focal length from the first lens to the fourth lens (mm)
f: Focal length (mm) of the entire imaging lens system
条件式(3)は第1レンズから第4レンズまでの合成焦点距離を適切に設定するための条件式である。条件式(3)の値が下限を上回ることで、第1レンズから第4レンズ合成焦点距離が短くなりすぎることがなくなり、第1レンズから第4レンズの中でもパワーが大きくなりがちな第1レンズや第2レンズで発生する諸収差を抑制することができる。一方、条件式(3)の値が上限を下回ることで、第1レンズから第4レンズまでの合成パワーを適度に維持することができ、撮像レンズ全長の短縮化を行うことができる。また、より望ましくは下式の範囲がよい。
1.20<f1234/f<1.90 (3)’ Conditional expression (3) is a conditional expression for appropriately setting the combined focal length from the first lens to the fourth lens. If the value of the conditional expression (3) exceeds the lower limit, the combined focal length of the fourth lens from the first lens does not become too short, and the first lens whose power tends to increase among the first lens to the fourth lens. And various aberrations occurring in the second lens can be suppressed. On the other hand, when the value of conditional expression (3) is below the upper limit, the combined power from the first lens to the fourth lens can be maintained moderately, and the overall length of the imaging lens can be shortened. More preferably, the range of the following formula is good.
1.20 <f1234 / f <1.90 (3) ′
1.20<f1234/f<1.90 (3)’ Conditional expression (3) is a conditional expression for appropriately setting the combined focal length from the first lens to the fourth lens. If the value of the conditional expression (3) exceeds the lower limit, the combined focal length of the fourth lens from the first lens does not become too short, and the first lens whose power tends to increase among the first lens to the fourth lens. And various aberrations occurring in the second lens can be suppressed. On the other hand, when the value of conditional expression (3) is below the upper limit, the combined power from the first lens to the fourth lens can be maintained moderately, and the overall length of the imaging lens can be shortened. More preferably, the range of the following formula is good.
1.20 <f1234 / f <1.90 (3) ′
また、以下の条件式を満足することが好ましい。
-1.70<f2/f<-1.00 (4)
ただし、
f2:前記第2レンズの焦点距離(mm)
f:前記撮像レンズ全系の焦点距離(mm) Moreover, it is preferable that the following conditional expressions are satisfied.
−1.70 <f2 / f <−1.00 (4)
However,
f2: Focal length (mm) of the second lens
f: Focal length (mm) of the entire imaging lens system
-1.70<f2/f<-1.00 (4)
ただし、
f2:前記第2レンズの焦点距離(mm)
f:前記撮像レンズ全系の焦点距離(mm) Moreover, it is preferable that the following conditional expressions are satisfied.
−1.70 <f2 / f <−1.00 (4)
However,
f2: Focal length (mm) of the second lens
f: Focal length (mm) of the entire imaging lens system
条件式(4)は第2レンズの焦点距離を適切に設定するための条件式である。上限式(4)の値が上限を下回ることで、第2レンズの負の屈折力が必要以上に強くなりすぎず、周辺部でのコマ収差や歪曲収差を小さくすることができる。一方、上限式(4)の値が下限を上回ることで、第2レンズの負の屈折力を適度に維持することができ、ペッツバール和の低減や像面湾曲の補正に効果がある。また、より望ましくは下式の範囲がよい。
-1.60<f2/f<-1.20 (4)’ Conditional expression (4) is a conditional expression for appropriately setting the focal length of the second lens. When the value of the upper limit expression (4) is less than the upper limit, the negative refractive power of the second lens does not become unnecessarily strong, and the coma and distortion at the peripheral portion can be reduced. On the other hand, when the value of the upper limit expression (4) exceeds the lower limit, the negative refractive power of the second lens can be maintained appropriately, which is effective in reducing Petzval sum and correcting field curvature. More preferably, the range of the following formula is good.
−1.60 <f2 / f <−1.20 (4) ′
-1.60<f2/f<-1.20 (4)’ Conditional expression (4) is a conditional expression for appropriately setting the focal length of the second lens. When the value of the upper limit expression (4) is less than the upper limit, the negative refractive power of the second lens does not become unnecessarily strong, and the coma and distortion at the peripheral portion can be reduced. On the other hand, when the value of the upper limit expression (4) exceeds the lower limit, the negative refractive power of the second lens can be maintained appropriately, which is effective in reducing Petzval sum and correcting field curvature. More preferably, the range of the following formula is good.
−1.60 <f2 / f <−1.20 (4) ′
また、以下の条件式を満足することが好ましい。
1.50<f3/f<6.00 (5)
ただし、
f3:前記第3レンズの焦点距離(mm)
f:前記撮像レンズ全系の焦点距離(mm) Moreover, it is preferable that the following conditional expressions are satisfied.
1.50 <f3 / f <6.00 (5)
However,
f3: Focal length (mm) of the third lens
f: Focal length (mm) of the entire imaging lens system
1.50<f3/f<6.00 (5)
ただし、
f3:前記第3レンズの焦点距離(mm)
f:前記撮像レンズ全系の焦点距離(mm) Moreover, it is preferable that the following conditional expressions are satisfied.
1.50 <f3 / f <6.00 (5)
However,
f3: Focal length (mm) of the third lens
f: Focal length (mm) of the entire imaging lens system
条件式(5)は第3レンズの焦点距離を適切に設定するための条件式である。条件式(5)の値が上限を下回ることで、第3レンズの屈折力を適度に維持することができ、第1レンズから第3レンズまでを正負正の順で配置する、所謂トリプレットの効果を強めることができるため、像面湾曲や非点収差を良好に補正することができるようになる。一方、条件式(5)の値が下限を上回ることで、第3レンズの屈折力が強くなりすぎず、撮像レンズ全長を短縮することができる。また、より望ましくは下式の範囲がよい。
2.00<f3/f<5.50 (5)’ Conditional expression (5) is a conditional expression for appropriately setting the focal length of the third lens. When the value of conditional expression (5) is below the upper limit, the refractive power of the third lens can be maintained moderately, and the so-called triplet effect in which the first lens to the third lens are arranged in order of positive and negative. Therefore, curvature of field and astigmatism can be corrected satisfactorily. On the other hand, when the value of conditional expression (5) exceeds the lower limit, the refractive power of the third lens does not become too strong, and the entire length of the imaging lens can be shortened. More preferably, the range of the following formula is good.
2.00 <f3 / f <5.50 (5) ′
2.00<f3/f<5.50 (5)’ Conditional expression (5) is a conditional expression for appropriately setting the focal length of the third lens. When the value of conditional expression (5) is below the upper limit, the refractive power of the third lens can be maintained moderately, and the so-called triplet effect in which the first lens to the third lens are arranged in order of positive and negative. Therefore, curvature of field and astigmatism can be corrected satisfactorily. On the other hand, when the value of conditional expression (5) exceeds the lower limit, the refractive power of the third lens does not become too strong, and the entire length of the imaging lens can be shortened. More preferably, the range of the following formula is good.
2.00 <f3 / f <5.50 (5) ′
また、以下の条件式を満足することが好ましい。
0.30<r1/f<0.60 (6)
ただし、
r1:前記第1レンズ物体側面の曲率半径(mm)
f:前記撮像レンズ全系の焦点距離(mm) Moreover, it is preferable that the following conditional expressions are satisfied.
0.30 <r1 / f <0.60 (6)
However,
r1: radius of curvature of the side surface of the first lens object (mm)
f: Focal length (mm) of the entire imaging lens system
0.30<r1/f<0.60 (6)
ただし、
r1:前記第1レンズ物体側面の曲率半径(mm)
f:前記撮像レンズ全系の焦点距離(mm) Moreover, it is preferable that the following conditional expressions are satisfied.
0.30 <r1 / f <0.60 (6)
However,
r1: radius of curvature of the side surface of the first lens object (mm)
f: Focal length (mm) of the entire imaging lens system
条件式(6)は第1レンズ物体側面の曲率半径を適切に設定し撮像レンズ全長の短縮化と収差補正を適切に達成するための条件式である。条件式(6)の値が上限を下回ることで、第1レンズ物体側面の屈折力を適度に維持することができ、第1レンズと第2レンズの合成主点をより物体側へ配置することができ、撮像レンズ全長を短くすることができる。一方、条件式(6)の値が下限を上回ることで、第1レンズ物体側面の屈折力が必要以上に大きくなりすぎず、第1レンズで発生する、高次の球面収差やコマ収差を小さく抑えることができる。また、より望ましくは下式の範囲がよい。
0.35<r1/f<0.50 (6)’ Conditional expression (6) is a conditional expression for appropriately setting the curvature radius of the side surface of the first lens object to appropriately shorten the imaging lens and to correct the aberration. When the value of conditional expression (6) is below the upper limit, the refractive power of the side surface of the first lens object can be appropriately maintained, and the composite principal point of the first lens and the second lens is arranged closer to the object side. The overall length of the imaging lens can be shortened. On the other hand, when the value of conditional expression (6) exceeds the lower limit, the refractive power on the side surface of the first lens object does not increase more than necessary, and high-order spherical aberration and coma aberration generated in the first lens are reduced. Can be suppressed. More preferably, the range of the following formula is good.
0.35 <r1 / f <0.50 (6) ′
0.35<r1/f<0.50 (6)’ Conditional expression (6) is a conditional expression for appropriately setting the curvature radius of the side surface of the first lens object to appropriately shorten the imaging lens and to correct the aberration. When the value of conditional expression (6) is below the upper limit, the refractive power of the side surface of the first lens object can be appropriately maintained, and the composite principal point of the first lens and the second lens is arranged closer to the object side. The overall length of the imaging lens can be shortened. On the other hand, when the value of conditional expression (6) exceeds the lower limit, the refractive power on the side surface of the first lens object does not increase more than necessary, and high-order spherical aberration and coma aberration generated in the first lens are reduced. Can be suppressed. More preferably, the range of the following formula is good.
0.35 <r1 / f <0.50 (6) ′
また、以下の条件式を満足することが好ましい。
0.40<r4/f<0.90 (7)
ただし、
r4:前記第2レンズ像側面の曲率半径(mm)
f:前記撮像レンズ全系の焦点距離(mm) Moreover, it is preferable that the following conditional expressions are satisfied.
0.40 <r4 / f <0.90 (7)
However,
r4: radius of curvature (mm) of the side surface of the second lens image
f: Focal length (mm) of the entire imaging lens system
0.40<r4/f<0.90 (7)
ただし、
r4:前記第2レンズ像側面の曲率半径(mm)
f:前記撮像レンズ全系の焦点距離(mm) Moreover, it is preferable that the following conditional expressions are satisfied.
0.40 <r4 / f <0.90 (7)
However,
r4: radius of curvature (mm) of the side surface of the second lens image
f: Focal length (mm) of the entire imaging lens system
条件式(7)は第2レンズ像側面の曲率半径を適切に設定する条件である。第2レンズの像側面を、条件式(7)を満足するような強い発散面とすることで、正の屈折力を有する第1レンズで発生した軸上色収差を第2レンズで良好に補正することができる。また、条件式(7)の値が下限を上回ることで、曲率半径が小さくなりすぎず、加工性を損なわない。一方で、条件式(7)の値が上限を下回ることで、ペッツバール和を小さく保ちながら色収差を良好に補正することができる。また、より望ましくは下式の範囲がよい。
0.45<r4/f<0.85 (7)’ Conditional expression (7) is a condition for appropriately setting the curvature radius of the second lens image side surface. By making the image side surface of the second lens a strong divergence surface that satisfies the conditional expression (7), the axial chromatic aberration generated by the first lens having positive refractive power is corrected well by the second lens. be able to. Further, when the value of conditional expression (7) exceeds the lower limit, the radius of curvature does not become too small, and the workability is not impaired. On the other hand, when the value of conditional expression (7) is below the upper limit, chromatic aberration can be corrected well while keeping the Petzval sum small. More preferably, the range of the following formula is good.
0.45 <r4 / f <0.85 (7) ′
0.45<r4/f<0.85 (7)’ Conditional expression (7) is a condition for appropriately setting the curvature radius of the second lens image side surface. By making the image side surface of the second lens a strong divergence surface that satisfies the conditional expression (7), the axial chromatic aberration generated by the first lens having positive refractive power is corrected well by the second lens. be able to. Further, when the value of conditional expression (7) exceeds the lower limit, the radius of curvature does not become too small, and the workability is not impaired. On the other hand, when the value of conditional expression (7) is below the upper limit, chromatic aberration can be corrected well while keeping the Petzval sum small. More preferably, the range of the following formula is good.
0.45 <r4 / f <0.85 (7) ′
また、以下の条件式を満足することが好ましい。
0.02<THIL2/f<0.20 (8)
ただし、
THIL2:前記第2レンズの光軸上の厚み(mm)
f:前記撮像レンズ全系の焦点距離(mm) Moreover, it is preferable that the following conditional expressions are satisfied.
0.02 <THIL2 / f <0.20 (8)
However,
THIL2: thickness on the optical axis of the second lens (mm)
f: Focal length (mm) of the entire imaging lens system
0.02<THIL2/f<0.20 (8)
ただし、
THIL2:前記第2レンズの光軸上の厚み(mm)
f:前記撮像レンズ全系の焦点距離(mm) Moreover, it is preferable that the following conditional expressions are satisfied.
0.02 <THIL2 / f <0.20 (8)
However,
THIL2: thickness on the optical axis of the second lens (mm)
f: Focal length (mm) of the entire imaging lens system
条件式(8)は第2レンズの光軸上の厚みを適切に設定するための条件式である。条件式(8)の値が下限を上回ることで、第2レンズの厚みが薄くなりすぎず、成形性を損なわない。一方、条件式(8)の値が上限を下回ることで、第2レンズの厚みが厚くなりすぎず、L2前後のレンズ間隔を確保しやすくなり、結果として撮像レンズ全長の短縮化を行うことができる。また、より望ましくは下式の範囲がよい。
0.03<THIL2/f≦0.15 (8)’ Conditional expression (8) is a conditional expression for appropriately setting the thickness of the second lens on the optical axis. When the value of conditional expression (8) exceeds the lower limit, the thickness of the second lens does not become too thin, and the moldability is not impaired. On the other hand, if the value of conditional expression (8) is less than the upper limit, the thickness of the second lens does not become too thick, and it becomes easy to secure the lens interval before and after L2, and as a result, the overall length of the imaging lens can be shortened. it can. More preferably, the range of the following formula is good.
0.03 <THIL2 / f ≦ 0.15 (8) ′
0.03<THIL2/f≦0.15 (8)’ Conditional expression (8) is a conditional expression for appropriately setting the thickness of the second lens on the optical axis. When the value of conditional expression (8) exceeds the lower limit, the thickness of the second lens does not become too thin, and the moldability is not impaired. On the other hand, if the value of conditional expression (8) is less than the upper limit, the thickness of the second lens does not become too thick, and it becomes easy to secure the lens interval before and after L2, and as a result, the overall length of the imaging lens can be shortened. it can. More preferably, the range of the following formula is good.
0.03 <THIL2 / f ≦ 0.15 (8) ′
また、以下の条件式を満足することが好ましい。
0.10<THIL6/f<0.30 (9)
ただし、
THIL6:前記第6レンズの光軸上の厚み(mm)
f:前記撮像レンズ全系の焦点距離(mm) Moreover, it is preferable that the following conditional expressions are satisfied.
0.10 <THIL6 / f <0.30 (9)
However,
THIL6: thickness of the sixth lens on the optical axis (mm)
f: Focal length (mm) of the entire imaging lens system
0.10<THIL6/f<0.30 (9)
ただし、
THIL6:前記第6レンズの光軸上の厚み(mm)
f:前記撮像レンズ全系の焦点距離(mm) Moreover, it is preferable that the following conditional expressions are satisfied.
0.10 <THIL6 / f <0.30 (9)
However,
THIL6: thickness of the sixth lens on the optical axis (mm)
f: Focal length (mm) of the entire imaging lens system
条件式(9)は第6レンズの光軸上の厚みを適切に設定するための条件式である。条件式(9)の値が下限を上回ることで、第6レンズの厚みが薄くなりすぎず、成形性を損なわない。一方、条件式(9)の値が上限を下回ることで、第6レンズの厚みが厚くなりすぎず、バックフォーカスを確保しやすくなる。また、より望ましくは下式の範囲がよい。
0.15<THIL6/f<0.25 (9)’ Conditional expression (9) is a conditional expression for appropriately setting the thickness of the sixth lens on the optical axis. When the value of conditional expression (9) exceeds the lower limit, the thickness of the sixth lens does not become too thin, and the moldability is not impaired. On the other hand, when the value of conditional expression (9) is less than the upper limit, the thickness of the sixth lens does not become too thick, and it becomes easy to ensure the back focus. More preferably, the range of the following formula is good.
0.15 <THIL6 / f <0.25 (9) '
0.15<THIL6/f<0.25 (9)’ Conditional expression (9) is a conditional expression for appropriately setting the thickness of the sixth lens on the optical axis. When the value of conditional expression (9) exceeds the lower limit, the thickness of the sixth lens does not become too thin, and the moldability is not impaired. On the other hand, when the value of conditional expression (9) is less than the upper limit, the thickness of the sixth lens does not become too thick, and it becomes easy to ensure the back focus. More preferably, the range of the following formula is good.
0.15 <THIL6 / f <0.25 (9) '
また、以下の条件式を満足することが好ましい。
2.0<HENL6<5.0 (10)
ただし、
HENL6:前記第6レンズの偏肉比 Moreover, it is preferable that the following conditional expressions are satisfied.
2.0 <HENL6 <5.0 (10)
However,
HENL6: Deviation ratio of the sixth lens
2.0<HENL6<5.0 (10)
ただし、
HENL6:前記第6レンズの偏肉比 Moreover, it is preferable that the following conditional expressions are satisfied.
2.0 <HENL6 <5.0 (10)
However,
HENL6: Deviation ratio of the sixth lens
条件式(10)は第6レンズの偏肉比を適切に設定するための条件式である。なお、ここでの偏肉比とは、第6レンズの周辺部での光軸と平行方向に見たレンズ厚みを光軸上の中心厚で割った値をいうものとする。条件式(10)の値が上限を下回ることで、偏肉比が極端に大きくなりすぎず、成形性を損なわないようにできる。第6レンズのような偏肉比の大きくなりがちなレンズでは、偏肉比が大きくなるとウェルド等の成形時の不具合が発生しやすくなるからである。一方、条件式(10)の値が下限を上回ることで、偏肉比を適度につけることができ、周辺での収差補正を良好にできたり、良好なテレセントリック特性を確保することができるようになる。また、より望ましくは下式の範囲がよい。
3.0<HENL6<4.5 (10)’ Conditional expression (10) is a conditional expression for appropriately setting the deviation ratio of the sixth lens. The thickness deviation ratio here means a value obtained by dividing the lens thickness seen in the direction parallel to the optical axis at the periphery of the sixth lens by the center thickness on the optical axis. When the value of conditional expression (10) is below the upper limit, the uneven thickness ratio does not become excessively large, and the moldability can be prevented from being impaired. This is because in a lens that tends to have a large thickness ratio such as the sixth lens, when the thickness ratio increases, defects such as welds are likely to occur. On the other hand, when the value of conditional expression (10) exceeds the lower limit, the thickness ratio can be appropriately set, the aberration correction in the vicinity can be made good, and good telecentric characteristics can be secured. Become. More preferably, the range of the following formula is good.
3.0 <HENL6 <4.5 (10) '
3.0<HENL6<4.5 (10)’ Conditional expression (10) is a conditional expression for appropriately setting the deviation ratio of the sixth lens. The thickness deviation ratio here means a value obtained by dividing the lens thickness seen in the direction parallel to the optical axis at the periphery of the sixth lens by the center thickness on the optical axis. When the value of conditional expression (10) is below the upper limit, the uneven thickness ratio does not become excessively large, and the moldability can be prevented from being impaired. This is because in a lens that tends to have a large thickness ratio such as the sixth lens, when the thickness ratio increases, defects such as welds are likely to occur. On the other hand, when the value of conditional expression (10) exceeds the lower limit, the thickness ratio can be appropriately set, the aberration correction in the vicinity can be made good, and good telecentric characteristics can be secured. Become. More preferably, the range of the following formula is good.
3.0 <HENL6 <4.5 (10) '
また、前記第4レンズは負の屈折力を有し、以下の条件式を満足することが好ましい。
20<ν3-ν4<70 (11)
ただし、
ν3:前記第3レンズのアッベ数
ν4:前記第4レンズのアッベ数 The fourth lens preferably has negative refractive power and satisfies the following conditional expression.
20 <ν3-ν4 <70 (11)
However,
ν3: Abbe number of the third lens ν4: Abbe number of the fourth lens
20<ν3-ν4<70 (11)
ただし、
ν3:前記第3レンズのアッベ数
ν4:前記第4レンズのアッベ数 The fourth lens preferably has negative refractive power and satisfies the following conditional expression.
20 <ν3-ν4 <70 (11)
However,
ν3: Abbe number of the third lens ν4: Abbe number of the fourth lens
条件式(11)は、撮像レンズ全系の色収差を良好に補正するための条件式である。条件式(11)の値が下限を上回ることで、軸上色収差や倍率色収差などの色収差をバランス良く補正することができる。一方、条件式(11)の値が上限を下回ることで、入手しやすい硝材で構成することができる。また、より望ましくは下式の範囲がよい。
25<ν3-ν4<65 (11)’ Conditional expression (11) is a conditional expression for satisfactorily correcting chromatic aberration of the entire imaging lens system. When the value of conditional expression (11) exceeds the lower limit, chromatic aberrations such as axial chromatic aberration and lateral chromatic aberration can be corrected with good balance. On the other hand, when the value of conditional expression (11) is below the upper limit, it can be made of an easily obtainable glass material. More preferably, the range of the following formula is good.
25 <ν3-ν4 <65 (11) '
25<ν3-ν4<65 (11)’ Conditional expression (11) is a conditional expression for satisfactorily correcting chromatic aberration of the entire imaging lens system. When the value of conditional expression (11) exceeds the lower limit, chromatic aberrations such as axial chromatic aberration and lateral chromatic aberration can be corrected with good balance. On the other hand, when the value of conditional expression (11) is below the upper limit, it can be made of an easily obtainable glass material. More preferably, the range of the following formula is good.
25 <ν3-ν4 <65 (11) '
また、以下の条件式を満足することが好ましい。
20<ν1-ν2<70 (12)
ただし、
ν1:前記第1レンズのアッベ数
ν2:前記第2レンズのアッベ数 Moreover, it is preferable that the following conditional expressions are satisfied.
20 <ν1-ν2 <70 (12)
However,
ν1: Abbe number of the first lens ν2: Abbe number of the second lens
20<ν1-ν2<70 (12)
ただし、
ν1:前記第1レンズのアッベ数
ν2:前記第2レンズのアッベ数 Moreover, it is preferable that the following conditional expressions are satisfied.
20 <ν1-ν2 <70 (12)
However,
ν1: Abbe number of the first lens ν2: Abbe number of the second lens
条件式(12)は、撮像レンズ全系の色収差を良好に補正するための条件式である。条件式(12)の値が下限を上回ることで、軸上色収差や倍率色収差などの色収差をバランス良く補正することができる。一方、条件式(12)の値が上限を下回ることで、入手しやすい硝材で構成することができる。また、より望ましくは下式の範囲がよい。
25<ν1-ν2<65 (12)’ Conditional expression (12) is a conditional expression for satisfactorily correcting chromatic aberration of the entire imaging lens system. When the value of conditional expression (12) exceeds the lower limit, chromatic aberrations such as axial chromatic aberration and lateral chromatic aberration can be corrected in a well-balanced manner. On the other hand, when the value of conditional expression (12) is less than the upper limit, it can be made of an easily available glass material. More preferably, the range of the following formula is good.
25 <ν1-ν2 <65 (12) '
25<ν1-ν2<65 (12)’ Conditional expression (12) is a conditional expression for satisfactorily correcting chromatic aberration of the entire imaging lens system. When the value of conditional expression (12) exceeds the lower limit, chromatic aberrations such as axial chromatic aberration and lateral chromatic aberration can be corrected in a well-balanced manner. On the other hand, when the value of conditional expression (12) is less than the upper limit, it can be made of an easily available glass material. More preferably, the range of the following formula is good.
25 <ν1-ν2 <65 (12) '
また、前記第6レンズの物体側面は非球面形状であり、光軸との交点以外の位置に極値を有することが好ましい。第6レンズの物体側面を非球面形状とし、光軸との交点以外の位置に極値を有する形状とすることで、画面周辺部の歪曲収差をより良好に補正し、テレセントリック特性をさらに良好にすることができるようになる。
Further, it is preferable that the object side surface of the sixth lens has an aspherical shape and has an extreme value at a position other than the intersection with the optical axis. By making the object side surface of the sixth lens an aspheric shape and having an extreme value at a position other than the intersection with the optical axis, the distortion at the periphery of the screen can be corrected better, and the telecentric characteristics can be further improved. Will be able to.
また、前記第2レンズの像側面は光軸から離れるにしたがって単調に像側へ倒れる形状をしていることが好ましい。第2レンズのような比較的屈折力の大きなレンズが光軸との交点以外の位置に極値を有する形状となっていると、第2レンズが製造誤差で偏芯を起こした場合の性能劣化が大きくなってしまう傾向にある。そこで、第2レンズの像側面を光軸から離れるにしたがって単調に像側へ倒れる形状とすることで、製造誤差発生時の性能劣化を小さく抑えることが可能となる。尚、「単調に倒れる」とは、曲面が極値を持たないことを意味する。
Further, it is preferable that the image side surface of the second lens is monotonously inclined to the image side as the distance from the optical axis increases. When a lens having a relatively large refractive power such as the second lens has a shape having an extreme value at a position other than the intersection with the optical axis, the performance deterioration when the second lens is decentered due to a manufacturing error. Tend to grow. Therefore, by making the image side surface of the second lens tilt monotonously toward the image side as it moves away from the optical axis, it is possible to suppress performance deterioration when a manufacturing error occurs. Note that “monotonously falls” means that the curved surface has no extreme value.
また、前記第3レンズは周辺部で物体側に倒れるような形状をしていることが好ましい。第3レンズが周辺部で物体側に倒れるような形状とすることで、第3レンズ周辺部の形状を開口絞りに対してコンセントリックに近い形状とすることができ、第3レンズで発生する軸外諸収差を抑制することができる。
In addition, it is preferable that the third lens has a shape that falls to the object side at the periphery. By forming the third lens in a shape that tilts toward the object side at the periphery, the shape of the periphery of the third lens can be made close to the concentric shape with respect to the aperture stop, and the axis generated by the third lens Various external aberrations can be suppressed.
また、実質的に屈折力を有しないレンズを有していてもよい。つまり、本発明の撮像レンズの構成に、実質的にパワーを持たないダミーレンズを付与した場合でも本発明の適用範囲内である。
Further, a lens having substantially no refractive power may be provided. That is, even when a dummy lens having substantially no power is added to the configuration of the imaging lens of the present invention, it is within the scope of the present invention.
本発明は、明細書に記載の実施形態、実施例に限定されるものではなく、他の実施形態や実施例や変形例を含むことは、本明細書に記載された実施形態や実施例や技術思想から本分野の当業者にとって明らかである。
The present invention is not limited to the embodiments and examples described in the specification, and other embodiments, examples, and modifications are included in the embodiments and examples described in the present specification. It will be apparent to those skilled in the art from the technical idea.
本発明により、小型の携帯端末に好適な撮像レンズを提供できる。
The present invention can provide an imaging lens suitable for a small portable terminal.
10 撮像レンズ
50 撮像ユニット
51 撮像素子
51a 光電変換部
52 基板
53 鏡筒
53a フランジ部
54 光学フィルタ
55 アクチュエータ
55a キャリヤ
55b コイル
55c 磁石
55d ヨーク
56 回路基板
57 台座部材
57a 側壁部
57b 上壁部
57c 開口
60 入力部
70 タッチパネル
80 無線通信部
91 記憶部
92 一時記憶部
100 スマートフォン
101 制御部
I 撮像面
F 平行平板
L1~L6 レンズ
S 開口絞り DESCRIPTION OFSYMBOLS 10 Imaging lens 50 Imaging unit 51 Imaging element 51a Photoelectric conversion part 52 Board | substrate 53 Lens barrel 53a Flange part 54 Optical filter 55 Actuator 55a Carrier 55b Coil 55c Magnet 55d Yoke 56 Circuit board 57 Base member 57a Side wall part 57b Upper wall part 57c Opening 60 Input unit 70 Touch panel 80 Wireless communication unit 91 Storage unit 92 Temporary storage unit 100 Smartphone 101 Control unit I Imaging surface F Parallel flat plates L1 to L6 Lens S Aperture stop
50 撮像ユニット
51 撮像素子
51a 光電変換部
52 基板
53 鏡筒
53a フランジ部
54 光学フィルタ
55 アクチュエータ
55a キャリヤ
55b コイル
55c 磁石
55d ヨーク
56 回路基板
57 台座部材
57a 側壁部
57b 上壁部
57c 開口
60 入力部
70 タッチパネル
80 無線通信部
91 記憶部
92 一時記憶部
100 スマートフォン
101 制御部
I 撮像面
F 平行平板
L1~L6 レンズ
S 開口絞り DESCRIPTION OF
Claims (17)
- 固体撮像素子の光電変換部に被写体像を結像させるための撮像レンズであって、
F2.4以上の明るさを有し、物体側より順に、正の屈折力を有し光軸近傍で物体側に凸面を向け、像側面よりも物体側面の方が強い曲率を有する第1レンズ、負の屈折力を有する第2レンズ、正の屈折力を有する第3レンズ、第4レンズ、第5レンズ、負の屈折力を有し光軸近傍で像側に凹面を向けた第6レンズ、からなり、
前記第6レンズの像側面は非球面形状であり、光軸との交点以外の位置に極値を有し、 開口絞りが前記第2レンズ像側面よりも物体側に配置され、
以下の条件式を満足することを特徴とする撮像レンズ。
40.0<ν3<65.0 (1)
0.05<d8/f<0.15 (2)
ただし、
ν3:前記第3レンズのアッベ数
d8:前記第4レンズと前記第5レンズの光軸上の空気間隔(mm)
f:前記撮像レンズ全系の焦点距離(mm) An imaging lens for forming a subject image on a photoelectric conversion unit of a solid-state imaging device,
A first lens having a brightness of F2.4 or more, having a positive refractive power in order from the object side, a convex surface facing the object side in the vicinity of the optical axis, and a curvature that is stronger on the object side than on the image side A second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens, a fifth lens, and a sixth lens having a negative refractive power and having a concave surface facing the image side in the vicinity of the optical axis Consists of
The image side surface of the sixth lens has an aspherical shape, has an extreme value at a position other than the intersection with the optical axis, and an aperture stop is disposed closer to the object side than the second lens image side surface.
An imaging lens satisfying the following conditional expression:
40.0 <ν3 <65.0 (1)
0.05 <d8 / f <0.15 (2)
However,
ν3: Abbe number of the third lens d8: Air interval on the optical axis of the fourth lens and the fifth lens (mm)
f: Focal length (mm) of the entire imaging lens system - 以下の条件式を満足することを特徴とする請求項1に記載の撮像レンズ。
1.00<f1234/f<2.00 (3)
ただし、
f1234:前記第1レンズから前記第4レンズまでの合成焦点距離(mm)
f:前記撮像レンズ全系の焦点距離(mm) The imaging lens according to claim 1, wherein the following conditional expression is satisfied.
1.00 <f1234 / f <2.00 (3)
However,
f1234: Composite focal length from the first lens to the fourth lens (mm)
f: Focal length (mm) of the entire imaging lens system - 以下の条件式を満足することを特徴とする請求項1又は2に記載の撮像レンズ。
-1.70<f2/f<-1.00 (4)
ただし、
f2:前記第2レンズの焦点距離(mm)
f:前記撮像レンズ全系の焦点距離(mm) The imaging lens according to claim 1, wherein the following conditional expression is satisfied.
−1.70 <f2 / f <−1.00 (4)
However,
f2: Focal length (mm) of the second lens
f: Focal length (mm) of the entire imaging lens system - 以下の条件式を満足することを特徴とする請求項1~3のいずれか1項に記載の撮像レンズ。
1.50<f3/f<6.00 (5)
ただし、
f3:前記第3レンズの焦点距離(mm)
f:前記撮像レンズ全系の焦点距離(mm) The imaging lens according to any one of claims 1 to 3, wherein the following conditional expression is satisfied.
1.50 <f3 / f <6.00 (5)
However,
f3: Focal length (mm) of the third lens
f: Focal length (mm) of the entire imaging lens system - 以下の条件式を満足することを特徴とする請求項1~4のいずれか1項に記載の撮像レンズ。
0.30<r1/f<0.60 (6)
ただし、
r1:前記第1レンズ物体側面の曲率半径(mm)
f:前記撮像レンズ全系の焦点距離(mm) 5. The imaging lens according to claim 1, wherein the following conditional expression is satisfied.
0.30 <r1 / f <0.60 (6)
However,
r1: radius of curvature of the side surface of the first lens object (mm)
f: Focal length (mm) of the entire imaging lens system - 以下の条件式を満足することを特徴とする請求項1~5のいずれか1項に記載の撮像レンズ。
0.40<r4/f<0.90 (7)
ただし、
r4:前記第2レンズ像側面の曲率半径(mm)
f:前記撮像レンズ全系の焦点距離(mm) 6. The imaging lens according to claim 1, wherein the following conditional expression is satisfied.
0.40 <r4 / f <0.90 (7)
However,
r4: radius of curvature (mm) of the side surface of the second lens image
f: Focal length (mm) of the entire imaging lens system - 以下の条件式を満足することを特徴とする請求項1~6のいずれか1項に記載の撮像レンズ。
0.02<THIL2/f<0.20 (8)
ただし、
THIL2:前記第2レンズの光軸上の厚み(mm)
f:前記撮像レンズ全系の焦点距離(mm) The imaging lens according to any one of claims 1 to 6, wherein the following conditional expression is satisfied.
0.02 <THIL2 / f <0.20 (8)
However,
THIL2: thickness on the optical axis of the second lens (mm)
f: Focal length (mm) of the entire imaging lens system - 以下の条件式を満足することを特徴とする請求項1~7のいずれか1項に記載の撮像レンズ。
0.10<THIL6/f<0.30 (9)
ただし、
THIL6:前記第6レンズの光軸上の厚み(mm)
f:前記撮像レンズ全系の焦点距離(mm) The imaging lens according to any one of claims 1 to 7, wherein the following conditional expression is satisfied.
0.10 <THIL6 / f <0.30 (9)
However,
THIL6: thickness of the sixth lens on the optical axis (mm)
f: Focal length (mm) of the entire imaging lens system - 以下の条件式を満足することを特徴とする請求項1~8のいずれか1項に記載の撮像レンズ。
2.0<HENL6<5.0 (10)
ただし、
HENL6:前記第6レンズの偏肉比 9. The imaging lens according to claim 1, wherein the following conditional expression is satisfied.
2.0 <HENL6 <5.0 (10)
However,
HENL6: Deviation ratio of the sixth lens - 前記第4レンズは負の屈折力を有し、以下の条件式を満足することを特徴とする請求項1~9のいずれか1項に記載の撮像レンズ。
20<ν3-ν4<70 (11)
ただし、
ν3:前記第3レンズのアッベ数
ν4:前記第4レンズのアッベ数 The imaging lens according to any one of claims 1 to 9, wherein the fourth lens has a negative refractive power and satisfies the following conditional expression.
20 <ν3-ν4 <70 (11)
However,
ν3: Abbe number of the third lens ν4: Abbe number of the fourth lens - 以下の条件式を満足することを特徴とする請求項1~10のいずれか1項に記載の撮像レンズ。
20<ν1-ν2<70 (12)
ただし、
ν1:前記第1レンズのアッベ数
ν2:前記第2レンズのアッベ数 The imaging lens according to any one of claims 1 to 10, wherein the following conditional expression is satisfied.
20 <ν1-ν2 <70 (12)
However,
ν1: Abbe number of the first lens ν2: Abbe number of the second lens - 前記第6レンズの物体側面は非球面形状であり、光軸との交点以外の位置に極値を有することを特徴とする請求項1~11のいずれか1項に記載の撮像レンズ。 The imaging lens according to any one of claims 1 to 11, wherein the object side surface of the sixth lens has an aspherical shape and has an extreme value at a position other than an intersection with the optical axis.
- 前記第2レンズの像側面は光軸から離れるにしたがって単調に像側へ倒れる形状をしていることを特徴とする請求項1~12のいずれか1項に記載の撮像レンズ。 The imaging lens according to any one of claims 1 to 12, wherein an image side surface of the second lens monotonously falls toward the image side as the distance from the optical axis increases.
- 前記第3レンズは周辺部で物体側に倒れるような形状をしていることを特徴とする請求項1~13のいずれか1項に記載の撮像レンズ。 The imaging lens according to any one of claims 1 to 13, wherein the third lens has a shape that falls toward the object side at a peripheral portion.
- 実質的に屈折力を有しないレンズを有することを特徴とする請求項1~14のいずれかに記載の撮像レンズ。 The imaging lens according to any one of claims 1 to 14, further comprising a lens having substantially no refractive power.
- 請求項1~15のいずれかに1項に記載の撮像レンズを有することを特徴とする撮像装置。 An imaging apparatus comprising the imaging lens according to any one of claims 1 to 15.
- 請求項16に記載の撮像装置を有することを特徴とする携帯端末。 A portable terminal comprising the imaging device according to claim 16.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015513663A JP6300183B2 (en) | 2013-04-22 | 2014-04-08 | Imaging lens, imaging device, and portable terminal |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013-089197 | 2013-04-22 | ||
JP2013089197 | 2013-04-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014175058A1 true WO2014175058A1 (en) | 2014-10-30 |
Family
ID=51791639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/060168 WO2014175058A1 (en) | 2013-04-22 | 2014-04-08 | Imaging lens, imaging device, and mobile terminal |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP6300183B2 (en) |
WO (1) | WO2014175058A1 (en) |
Cited By (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9104014B2 (en) | 2013-05-30 | 2015-08-11 | Largan Precision Co., Ltd. | Imaging lens system and image capturing device |
CN104898257A (en) * | 2015-03-11 | 2015-09-09 | 瑞声声学科技(深圳)有限公司 | Camera lens system |
CN105807407A (en) * | 2014-12-30 | 2016-07-27 | 大立光电股份有限公司 | Imaging optical lens set, image capture device and electronic device |
CN105911675A (en) * | 2015-12-21 | 2016-08-31 | 瑞声科技(新加坡)有限公司 | Image photographing lens |
US9435983B2 (en) | 2014-05-23 | 2016-09-06 | Largan Precision Co., Ltd. | Photographing optical lens assembly, image capturing unit and mobile device |
CN105988187A (en) * | 2015-07-17 | 2016-10-05 | 浙江舜宇光学有限公司 | Image pick-up lens |
CN106249389A (en) * | 2015-06-08 | 2016-12-21 | 株式会社光学逻辑 | Pick-up lens |
JP2017049329A (en) * | 2015-08-31 | 2017-03-09 | カンタツ株式会社 | Imaging lens |
CN106802468A (en) * | 2016-12-14 | 2017-06-06 | 瑞声科技(新加坡)有限公司 | Camera optical camera lens |
TWI588525B (en) * | 2016-01-04 | 2017-06-21 | 玉晶光電股份有限公司 | Optical lens assembly |
CN106896471A (en) * | 2016-12-16 | 2017-06-27 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
US9810880B2 (en) | 2015-09-30 | 2017-11-07 | Largan Precision Co., Ltd. | Imaging optical system, image capturing apparatus and electronic device |
KR101830765B1 (en) | 2016-09-29 | 2018-02-21 | (주)디오스텍 | Super-slim small optical system |
US10007092B2 (en) | 2016-01-04 | 2018-06-26 | Genius Electronic Optical (Xiamen) Co., Ltd. | Optical lens assembly |
CN108717225A (en) * | 2018-03-08 | 2018-10-30 | 瑞声声学科技(深圳)有限公司 | Camera optical camera lens |
CN109557638A (en) * | 2017-09-26 | 2019-04-02 | 三星电机株式会社 | Optical imaging system |
US10254513B2 (en) | 2014-12-30 | 2019-04-09 | Largan Precision Co., Ltd. | Imaging optical lens assembly, imaging apparatus and electronic device |
CN109814238A (en) * | 2018-06-01 | 2019-05-28 | 浙江舜宇光学有限公司 | Imaging lens |
JP2019095756A (en) * | 2017-11-18 | 2019-06-20 | エーエーシー テクノロジーズ ピーティーイー リミテッドAac Technologies Pte.Ltd. | Image capturing optical lens |
JP2019095749A (en) * | 2017-11-18 | 2019-06-20 | エーエーシー テクノロジーズ ピーティーイー リミテッドAac Technologies Pte.Ltd. | Image capturing optical lens |
CN110196485A (en) * | 2019-07-16 | 2019-09-03 | 浙江舜宇光学有限公司 | Optical imaging lens |
CN110412737A (en) * | 2019-06-30 | 2019-11-05 | 瑞声科技(新加坡)有限公司 | Camera optical camera lens |
JP2020511698A (en) * | 2017-03-24 | 2020-04-16 | ▲寧▼波舜宇光▲電▼信息有限公司 | Split lens, imaging module and electronic equipment |
CN111045193A (en) * | 2019-12-30 | 2020-04-21 | 瑞声通讯科技(常州)有限公司 | Image pickup optical lens |
KR20200109053A (en) * | 2019-03-12 | 2020-09-22 | 한남대학교 산학협력단 | Telecentric lens system for smartphone |
JP2021009340A (en) * | 2019-06-30 | 2021-01-28 | エーエーシー オプティックス ソリューションズ ピーティーイー リミテッド | Image capturing optical lens |
CN112346219A (en) * | 2020-12-02 | 2021-02-09 | 浙江舜宇光学有限公司 | Camera lens |
JP2021026208A (en) * | 2019-08-06 | 2021-02-22 | エーエーシー オプティックス ソリューションズ ピーティーイー リミテッド | Imaging optical lens |
WO2021127853A1 (en) * | 2019-12-23 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
WO2021134264A1 (en) * | 2019-12-30 | 2021-07-08 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
CN113219636A (en) * | 2018-05-04 | 2021-08-06 | 浙江舜宇光学有限公司 | Optical imaging lens |
US11156803B2 (en) | 2018-09-26 | 2021-10-26 | Largan Precision Co., Ltd. | Imaging optical system, image capturing unit and electronic device |
WO2022088346A1 (en) * | 2020-10-31 | 2022-05-05 | 诚瑞光学(深圳)有限公司 | Photographing optical lens |
US11966013B2 (en) | 2017-09-22 | 2024-04-23 | Largan Precision Co., Ltd. | Imaging lens assembly, image capturing unit and electronic device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110231704B (en) | 2019-08-06 | 2019-11-08 | 瑞声光电科技(常州)有限公司 | Wide-angle lens |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW201305595A (en) * | 2012-10-22 | 2013-02-01 | Largan Precision Co Ltd | Image capturing optical lens system |
TW201305596A (en) * | 2012-10-22 | 2013-02-01 | Largan Precision Co Ltd | Optical photographing system |
US20130033762A1 (en) * | 2011-08-05 | 2013-02-07 | Largan Precision Co. Ltd. | Photographing optical lens assembly |
WO2013114812A1 (en) * | 2012-01-30 | 2013-08-08 | 富士フイルム株式会社 | Image pickup lens and image pickup apparatus provided with image pickup lens |
WO2013145547A1 (en) * | 2012-03-26 | 2013-10-03 | 富士フイルム株式会社 | Imaging lens and imaging device provided with imaging lens |
JP2014044373A (en) * | 2012-08-28 | 2014-03-13 | Sony Corp | Image pickup lens and image pickup device |
JP2014085665A (en) * | 2012-10-25 | 2014-05-12 | Samsung Electro-Mechanics Co Ltd | High-resolution imaging optical system |
JP2014109764A (en) * | 2012-12-04 | 2014-06-12 | Samsung Electronics Co Ltd | Image capturing lens |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2711861A1 (en) * | 2012-09-20 | 2014-03-26 | Alcatel-Lucent | Method and system of controlling changes in an operating system |
US8995505B2 (en) * | 2012-11-30 | 2015-03-31 | Qualcomm Incorporated | Sliding if transceiver architecture |
US20140193654A1 (en) * | 2013-01-09 | 2014-07-10 | Moana Park | Multifunction accessory |
-
2014
- 2014-04-08 JP JP2015513663A patent/JP6300183B2/en active Active
- 2014-04-08 WO PCT/JP2014/060168 patent/WO2014175058A1/en active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130033762A1 (en) * | 2011-08-05 | 2013-02-07 | Largan Precision Co. Ltd. | Photographing optical lens assembly |
WO2013114812A1 (en) * | 2012-01-30 | 2013-08-08 | 富士フイルム株式会社 | Image pickup lens and image pickup apparatus provided with image pickup lens |
WO2013145547A1 (en) * | 2012-03-26 | 2013-10-03 | 富士フイルム株式会社 | Imaging lens and imaging device provided with imaging lens |
JP2014044373A (en) * | 2012-08-28 | 2014-03-13 | Sony Corp | Image pickup lens and image pickup device |
TW201305595A (en) * | 2012-10-22 | 2013-02-01 | Largan Precision Co Ltd | Image capturing optical lens system |
TW201305596A (en) * | 2012-10-22 | 2013-02-01 | Largan Precision Co Ltd | Optical photographing system |
JP2014085665A (en) * | 2012-10-25 | 2014-05-12 | Samsung Electro-Mechanics Co Ltd | High-resolution imaging optical system |
JP2014109764A (en) * | 2012-12-04 | 2014-06-12 | Samsung Electronics Co Ltd | Image capturing lens |
Cited By (55)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9104014B2 (en) | 2013-05-30 | 2015-08-11 | Largan Precision Co., Ltd. | Imaging lens system and image capturing device |
US9435983B2 (en) | 2014-05-23 | 2016-09-06 | Largan Precision Co., Ltd. | Photographing optical lens assembly, image capturing unit and mobile device |
US10598904B2 (en) | 2014-12-30 | 2020-03-24 | Largan Precision Co., Ltd. | Imaging optical lens assembly, imaging apparatus and electronic device |
US10254513B2 (en) | 2014-12-30 | 2019-04-09 | Largan Precision Co., Ltd. | Imaging optical lens assembly, imaging apparatus and electronic device |
US11656441B2 (en) | 2014-12-30 | 2023-05-23 | Largan Precision Co., Ltd. | Imaging optical lens assembly, imaging apparatus and electronic device |
US11231563B2 (en) | 2014-12-30 | 2022-01-25 | Largan Precision Co., Ltd. | Imaging optical lens assembly, imaging apparatus and electronic device |
CN105807407A (en) * | 2014-12-30 | 2016-07-27 | 大立光电股份有限公司 | Imaging optical lens set, image capture device and electronic device |
CN104898257A (en) * | 2015-03-11 | 2015-09-09 | 瑞声声学科技(深圳)有限公司 | Camera lens system |
CN106249389A (en) * | 2015-06-08 | 2016-12-21 | 株式会社光学逻辑 | Pick-up lens |
CN105988187A (en) * | 2015-07-17 | 2016-10-05 | 浙江舜宇光学有限公司 | Image pick-up lens |
CN105988187B (en) * | 2015-07-17 | 2018-12-04 | 浙江舜宇光学有限公司 | Pick-up lens |
JP2017049329A (en) * | 2015-08-31 | 2017-03-09 | カンタツ株式会社 | Imaging lens |
US9810880B2 (en) | 2015-09-30 | 2017-11-07 | Largan Precision Co., Ltd. | Imaging optical system, image capturing apparatus and electronic device |
CN105911675A (en) * | 2015-12-21 | 2016-08-31 | 瑞声科技(新加坡)有限公司 | Image photographing lens |
CN105911675B (en) * | 2015-12-21 | 2018-08-14 | 瑞声科技(新加坡)有限公司 | Pick-up lens |
US10007092B2 (en) | 2016-01-04 | 2018-06-26 | Genius Electronic Optical (Xiamen) Co., Ltd. | Optical lens assembly |
TWI588525B (en) * | 2016-01-04 | 2017-06-21 | 玉晶光電股份有限公司 | Optical lens assembly |
KR101830765B1 (en) | 2016-09-29 | 2018-02-21 | (주)디오스텍 | Super-slim small optical system |
JP2018097329A (en) * | 2016-12-14 | 2018-06-21 | エーエーシー テクノロジーズ ピーティーイー リミテッドAac Technologies Pte.Ltd. | Optical imaging lens |
CN106802468B (en) * | 2016-12-14 | 2019-05-31 | 瑞声科技(新加坡)有限公司 | Camera optical camera lens |
JP6232152B1 (en) * | 2016-12-14 | 2017-11-15 | エーエーシー テクノロジーズ ピーティーイー リミテッドAac Technologies Pte.Ltd. | Imaging optical lens |
CN106802468A (en) * | 2016-12-14 | 2017-06-06 | 瑞声科技(新加坡)有限公司 | Camera optical camera lens |
US10295792B2 (en) | 2016-12-16 | 2019-05-21 | Genius Electronics Optical (Xiamen) Co., Ltd. | Optical imaging lens |
CN106896471A (en) * | 2016-12-16 | 2017-06-27 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
US11659263B2 (en) | 2017-03-24 | 2023-05-23 | Ningbo Sunny Opotech Co., Ltd. | Split lens and camera module and electronic apparatus |
JP2020511698A (en) * | 2017-03-24 | 2020-04-16 | ▲寧▼波舜宇光▲電▼信息有限公司 | Split lens, imaging module and electronic equipment |
US11966013B2 (en) | 2017-09-22 | 2024-04-23 | Largan Precision Co., Ltd. | Imaging lens assembly, image capturing unit and electronic device |
CN109557638A (en) * | 2017-09-26 | 2019-04-02 | 三星电机株式会社 | Optical imaging system |
US11947089B2 (en) | 2017-09-26 | 2024-04-02 | Samsung Electro-Mechanics Co., Ltd. | Optical imaging system |
US10890737B2 (en) | 2017-09-26 | 2021-01-12 | Samsung Electro-Mechanics Co., Ltd. | Optical imaging system |
US11635593B2 (en) | 2017-09-26 | 2023-04-25 | Samsung Electro-Mechanics Co., Ltd. | Optical imaging system |
JP2019095749A (en) * | 2017-11-18 | 2019-06-20 | エーエーシー テクノロジーズ ピーティーイー リミテッドAac Technologies Pte.Ltd. | Image capturing optical lens |
JP2019095756A (en) * | 2017-11-18 | 2019-06-20 | エーエーシー テクノロジーズ ピーティーイー リミテッドAac Technologies Pte.Ltd. | Image capturing optical lens |
CN108717225A (en) * | 2018-03-08 | 2018-10-30 | 瑞声声学科技(深圳)有限公司 | Camera optical camera lens |
CN108717225B (en) * | 2018-03-08 | 2019-06-11 | 瑞声声学科技(深圳)有限公司 | Camera optical camera lens |
US11573402B2 (en) | 2018-05-04 | 2023-02-07 | Zhejiang Sunny Optical Co., Ltd. | Optical imaging lens assembly |
CN113219636A (en) * | 2018-05-04 | 2021-08-06 | 浙江舜宇光学有限公司 | Optical imaging lens |
CN109814238B (en) * | 2018-06-01 | 2021-05-25 | 浙江舜宇光学有限公司 | Imaging lens |
US11698514B2 (en) | 2018-06-01 | 2023-07-11 | Zhejiang Sunny Optical Co., Ltd | Imaging lens assembly |
CN109814238A (en) * | 2018-06-01 | 2019-05-28 | 浙江舜宇光学有限公司 | Imaging lens |
US11156803B2 (en) | 2018-09-26 | 2021-10-26 | Largan Precision Co., Ltd. | Imaging optical system, image capturing unit and electronic device |
KR102174471B1 (en) * | 2019-03-12 | 2020-11-04 | 한남대학교 산학협력단 | Telecentric lens system for smartphone |
KR20200109053A (en) * | 2019-03-12 | 2020-09-22 | 한남대학교 산학협력단 | Telecentric lens system for smartphone |
JP2021009340A (en) * | 2019-06-30 | 2021-01-28 | エーエーシー オプティックス ソリューションズ ピーティーイー リミテッド | Image capturing optical lens |
CN110412737A (en) * | 2019-06-30 | 2019-11-05 | 瑞声科技(新加坡)有限公司 | Camera optical camera lens |
CN110196485A (en) * | 2019-07-16 | 2019-09-03 | 浙江舜宇光学有限公司 | Optical imaging lens |
CN110196485B (en) * | 2019-07-16 | 2024-06-25 | 浙江舜宇光学有限公司 | Optical imaging lens |
US11340423B2 (en) | 2019-08-06 | 2022-05-24 | Aac Optics Solutions Pte. Ltd. | Camera optical lens |
JP2021026208A (en) * | 2019-08-06 | 2021-02-22 | エーエーシー オプティックス ソリューションズ ピーティーイー リミテッド | Imaging optical lens |
WO2021127853A1 (en) * | 2019-12-23 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
WO2021134264A1 (en) * | 2019-12-30 | 2021-07-08 | 诚瑞光学(常州)股份有限公司 | Camera optical lens |
CN111045193A (en) * | 2019-12-30 | 2020-04-21 | 瑞声通讯科技(常州)有限公司 | Image pickup optical lens |
WO2022088346A1 (en) * | 2020-10-31 | 2022-05-05 | 诚瑞光学(深圳)有限公司 | Photographing optical lens |
CN112346219B (en) * | 2020-12-02 | 2024-01-05 | 浙江舜宇光学有限公司 | Image pickup lens |
CN112346219A (en) * | 2020-12-02 | 2021-02-09 | 浙江舜宇光学有限公司 | Camera lens |
Also Published As
Publication number | Publication date |
---|---|
JP6300183B2 (en) | 2018-03-28 |
JPWO2014175058A1 (en) | 2017-02-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6300183B2 (en) | Imaging lens, imaging device, and portable terminal | |
JP6175903B2 (en) | Imaging lens, imaging device, and portable terminal | |
CN113238358B (en) | Camera lens | |
JP5382527B2 (en) | Imaging lens, imaging device, and portable terminal | |
JP6845484B2 (en) | Imaging optical system, lens unit and imaging device | |
WO2013137312A1 (en) | Image pickup lens, image pickup device, and portable terminal | |
JP6394598B2 (en) | Imaging lens, imaging device, and portable terminal | |
JP4894222B2 (en) | Imaging lens, imaging unit, and portable terminal | |
EP1348990A1 (en) | Objective composed of three aspherical lenses | |
JP6451639B2 (en) | Imaging device and portable terminal | |
WO2013039035A1 (en) | Image pick-up lens, image pick-up device, portable terminal and digital instrument | |
JP2014115431A (en) | Imaging lens, imaging apparatus, and portable terminal | |
JP2011164562A (en) | Image-capturing lens, image-capturing device, and portable terminal | |
JP2013156389A (en) | Imaging lens, imaging device and portable terminal | |
KR101221703B1 (en) | Image pick-up lens, image pick-up unit and portable terminal | |
JP2009282223A (en) | Imaging lens, imaging unit and personal digital assistant | |
CN206440879U (en) | Pick-up lens | |
JP2013092584A (en) | Imaging lens, imaging apparatus and portable terminal | |
JP2015084066A (en) | Image capturing lens, image capturing device, and portable terminal | |
JP2013246217A (en) | Imaging lens, imaging apparatus, and portable terminal | |
WO2014034432A1 (en) | Imaging lens, imaging device, and portable terminal | |
WO2013187405A1 (en) | Imaging lens, imaging device, and mobile terminal | |
JP2003215446A (en) | Small-sized imaging lens | |
JP2005077556A (en) | Imaging lens, imaging unit, and personal digital assistant |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14787767 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2015513663 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 14787767 Country of ref document: EP Kind code of ref document: A1 |