CN109061855B - Optical camera lens assembly and image capturing device - Google Patents
Optical camera lens assembly and image capturing device Download PDFInfo
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- CN109061855B CN109061855B CN201811119810.3A CN201811119810A CN109061855B CN 109061855 B CN109061855 B CN 109061855B CN 201811119810 A CN201811119810 A CN 201811119810A CN 109061855 B CN109061855 B CN 109061855B
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Abstract
The present invention discloses an optical image capturing lens assembly and an image capturing device, wherein the optical image capturing lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The first lens element with negative refractive power has a concave image-side surface at a paraxial region, the second lens element with positive refractive power has a convex image-side surface at an off-axis region, and the sixth lens element with positive refractive power has an object-side surface and an image-side surface which are aspheric. The invention also discloses an image capturing device with the optical camera lens group.
Description
The application is a divisional application, and the application date of the original application is as follows: year 2015, 07 months, 01 days; the application numbers are: 201510377516.2, respectively; the invention has the name: an optical image capturing lens assembly, an image capturing device and an electronic device.
Technical Field
The present disclosure relates to optical lens assemblies and image capturing devices, and particularly to an optical lens assembly and an image capturing device suitable for an electronic device.
Background
In recent years, with the rapid development of miniaturized camera lenses, the demand of miniature image capture modules is increasing, and the photosensitive elements of general camera lenses are not limited to two types, namely, a Charge Coupled Device (CCD) or a Complementary Metal-Oxide Semiconductor (CMOS) Sensor, and with the advance of Semiconductor process technology, the pixel size of the photosensitive elements is reduced, and in addition, the development trend of electronic products is to have a good function, a light weight, a small size, and a good imaging quality, so that the miniaturized camera lenses are the mainstream in the current market.
The conventional high-pixel miniaturized camera lens mounted on an electronic Device mainly adopts a lens structure with a small number of lenses, but due to the prevalence of high-specification mobile devices such as a high-order Smart Phone (Smart Phone), a Wearable Device (Wearable Device), and a Tablet Personal Computer (Tablet Personal Computer), the requirements of the miniaturized camera lens on pixel and imaging quality are increased, and the conventional lens set cannot meet the requirements of higher orders. In addition, in recent years, the development of the photographing lens is gradually towards a large aperture and a wide viewing angle, so that it is difficult for the optical system of the conventional lens configuration to simultaneously satisfy the requirements of the large aperture, the wide viewing angle and the miniaturization. Therefore, how to provide a high quality optical system with both miniaturization and wide viewing angle is one of the problems to be solved in the industry.
Disclosure of Invention
The present invention provides an optical image capturing lens assembly and an image capturing device, wherein the optical image capturing lens assembly includes seven lens elements, and an image side surface of the seventh lens element at a paraxial region is concave. When the specific condition is satisfied, the main point of the optical image capturing lens assembly is kept away from the image side end of the optical image capturing lens assembly, so as to shorten the total length of the optical image capturing lens assembly. The optical image pickup lens assembly provided by the invention can simultaneously meet the requirements of large aperture, wide visual angle, miniaturization and high imaging quality.
The present invention provides an optical imaging lens assembly, including, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The first lens element has negative refractive power. The second lens element has positive refractive power. The object-side surface and the image-side surface of the sixth lens element are aspheric. The seventh lens element has a concave image-side surface at a paraxial region, and the seventh lens element has at least one convex image-side surface at an off-axis region. The optical image capturing lens assembly includes seven lens elements, a curvature radius of the image-side surface of the sixth lens element is R12, a focal length of the optical image capturing lens assembly is f, a focal length of the first lens element is f1, a focal length of the second lens element is f2, an axial distance from the object-side surface of the first lens element to the image plane is TL, a maximum image height of the optical image capturing lens assembly is ImgH, and the following conditions are satisfied:
0≤R12/f；
f2/| f1| < 1.0; and
TL/ImgH<3.0。
the invention provides an image capturing device, which comprises the optical camera lens assembly and an electronic photosensitive element, wherein the electronic photosensitive element is arranged on an imaging surface of the optical camera lens assembly.
The present invention further provides an optical image capturing lens assembly, which includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The first lens element has negative refractive power. The second lens element has positive refractive power. The object-side surface and the image-side surface of the sixth lens element are aspheric. The seventh lens element has a concave image-side surface at a paraxial region, and the seventh lens element has at least one convex image-side surface at an off-axis region. The optical image capturing lens assembly includes seven lens elements, a curvature radius of the image-side surface of the sixth lens element is R12, a curvature radius of the image-side surface of the seventh lens element is R14, a focal length of the optical image capturing lens assembly is f, an axial distance between the object-side surface of the first lens element and an image plane is TL, and a maximum image height of the optical image capturing lens assembly is ImgH, which satisfies the following conditions:
0≤R12/f；
r14/f < 0.75; and
TL/ImgH<3.0。
the present invention further provides an image capturing device, which includes the optical image capturing lens assembly and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an image plane of the optical image capturing lens assembly.
The present invention further provides an optical image capturing lens assembly, which includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The first lens element has negative refractive power. The second lens element has positive refractive power. The object-side surface and the image-side surface of the sixth lens element are aspheric. The seventh lens element has a concave image-side surface at a paraxial region, and the seventh lens element has at least one convex image-side surface at an off-axis region. The optical image capturing lens assembly includes seven lens elements, a curvature radius of the image-side surface of the sixth lens element is R12, a focal length of the optical image capturing lens assembly is f, a focal length of the first lens element is f1, a focal length of the second lens element is f2, an axial distance from the object-side surface of the first lens element to the image plane is TL, a maximum image height of the optical image capturing lens assembly is ImgH, and the following conditions are satisfied:
0≤R12/f；
i f/f1| + | f/f2| < 1.50; and
TL/ImgH<3.0。
the present invention further provides an image capturing device, which comprises the optical image capturing lens assembly and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an image plane of the optical image capturing lens assembly.
When R12/f satisfies the above condition, it is helpful to keep the main point of the optical image capturing lens assembly away from the image side of the optical image capturing lens assembly to shorten the total length of the optical image capturing lens assembly.
When f2/| f1| satisfies the above condition, it is helpful to dispose sufficient refractive power at the image side of the optical image capturing lens assembly, so that the optical image capturing lens assembly has the characteristics of wide angle of view, low sensitivity and miniaturization.
When R14/f satisfies the above condition, the seventh lens image-side surface contributes to shortening the back focal length of the optical image pickup lens group to further maintain the miniaturization of the optical image pickup lens group.
When TL/ImgH satisfies the above condition, it is advantageous to further maintain the miniaturization of the optical image capturing lens assembly, making it more suitable for being carried on a light and thin electronic device.
When the conditions are satisfied, the refractive powers of the first lens element and the second lens element can be properly configured to reduce the sensitivity of each lens element near the object side of the optical image capturing lens assembly.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
FIG. 1 is a schematic view of an image capturing apparatus according to a first embodiment of the present invention;
FIG. 2 is a graph showing the spherical aberration, astigmatism and distortion of the first embodiment in order from left to right;
FIG. 3 is a schematic view of an image capturing apparatus according to a second embodiment of the present invention;
FIG. 4 is a graph showing the spherical aberration, astigmatism and distortion of the second embodiment in order from left to right;
FIG. 5 is a schematic view of an image capturing apparatus according to a third embodiment of the present invention;
FIG. 6 is a graph showing the spherical aberration, astigmatism and distortion of the third embodiment from left to right;
FIG. 7 is a schematic view of an image capturing apparatus according to a fourth embodiment of the present invention;
FIG. 8 is a graph showing the spherical aberration, astigmatism and distortion of the fourth embodiment in order from left to right;
FIG. 9 is a schematic view of an image capturing apparatus according to a fifth embodiment of the present invention;
FIG. 10 is a graph showing the spherical aberration, astigmatism and distortion of the fifth embodiment in order from left to right;
FIG. 11 is a schematic view of an image capturing apparatus according to a sixth embodiment of the present invention;
FIG. 12 is a graph showing the spherical aberration, astigmatism and distortion of the sixth embodiment in order from left to right;
FIG. 13 is a schematic view of an image capturing apparatus according to a seventh embodiment of the invention;
FIG. 14 is a graph showing the spherical aberration, astigmatism and distortion in order from left to right for the seventh embodiment;
FIG. 15 is a schematic view of an image capturing apparatus according to an eighth embodiment of the present invention;
FIG. 16 is a graph showing the spherical aberration, astigmatism and distortion of the eighth embodiment in order from left to right;
FIG. 17 is a block diagram of a point of the image-side surface of the fourth lens element of the optical imaging lens assembly of FIG. 1 closest to the image plane;
FIG. 18 is a schematic view of an electronic device according to the present invention;
FIG. 19 is a schematic diagram of another electronic device according to the present invention;
FIG. 20 is a schematic diagram of yet another electronic device according to the present invention.
Wherein the reference numerals
Image capturing device: 10
Aperture ratio of 100: 100, 200, 300, 400, 500, 600, 700, 800
First lens: 110, 210, 310, 410, 510, 610, 710, 810
Image side surface: 112, 212, 312, 412, 512, 612, 712, 812
Second lens: 120, 220, 320, 420, 520, 620, 720, 820
Image side surface: 122, 222, 322, 422, 522, 622, 722, 822
130, 230, 330, 430, 530, 630, 730, 830 of third lens
Image side surface: 132, 232, 332, 432, 532, 632, 732, 832
Object side surfaces 141, 241, 341, 441, 541, 641, 741, 841
Image side surface: 142, 242, 342, 442, 542, 642, 742, 842
Fifth lens element (150, 250, 350, 450, 550, 650, 750, 850)
Object side surfaces 151, 251, 351, 451, 551, 651, 751, 851
Object side surfaces 161, 261, 361, 461, 561, 661, 761, 861
Image side surface: 162, 262, 362, 462, 562, 662, 762, 862
170, 270, 370, 470, 570, 670, 770, 870, seventh lens
Object side surfaces 171, 271, 371, 471, 571, 671, 771, 871
Image side surfaces 172, 272, 372, 472, 572, 672, 772, 872
Infrared filtering filter element 180, 280, 380, 480, 580, 680, 780, 880
Imaging planes 190, 290, 390, 490, 590, 690, 790, 890
The electronic photosensitive elements 195, 295, 395, 495, 595, 695, 795 and 895
CT 1: thickness of the first lens on the optical axis
CT 2: thickness of the second lens on the optical axis
CT4 thickness of fourth lens on optical axis
CT5 thickness of fifth lens on optical axis
Dr1r 6: the distance from the object side surface of the first lens to the image side surface of the third lens on the optical axis
f: focal length of optical camera lens group
f 1: focal length of the first lens
f 2: focal length of the second lens
ImgH: maximum imaging height of optical camera lens group
P: a point of the image side surface of the fourth lens, which is closest to the imaging surface
Powmax: maximum value of refractive power in the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element, the sixth lens element and the seventh lens element
R12 radius of curvature of image-side surface of sixth lens element
R13: radius of curvature of object-side surface of seventh lens
R14: radius of curvature of image-side surface of seventh lens
TL: the distance from the object side surface of the first lens to an imaging surface on the optical axis
Td: the distance from the object side surface of the first lens to the image side surface of the seventh lens on the optical axis
V2: abbe number of second lens
V3: abbe number of third lens
V5: abbe number of fifth lens
Sigma CT is a sum of thicknesses of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens on an optical axis
Detailed Description
The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:
the optical imaging lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. Wherein, the optical image pickup lens assembly comprises seven lens elements with refractive power.
Any two adjacent lenses of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element, the sixth lens element and the seventh lens element have an air space on an optical axis, that is, the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element, the sixth lens element and the seventh lens element are seven single non-bonded (non-bonded) lenses with refractive power. Since the process of the cemented lens is more complicated than that of the non-cemented lens, especially the cemented surface of the two lenses needs to have a curved surface with high accuracy so as to achieve high degree of conformity when the two lenses are cemented, and during the cementing process, the shift defect caused by the offset is more likely to affect the overall optical imaging quality. Therefore, the first lens element to the seventh lens element in the lens system adopt seven single non-cemented lens elements with refractive power, thereby effectively improving the problems of cemented lens elements.
The first lens element has refractive power. Therefore, the aberration of the optical shooting lens group can be corrected to improve the imaging quality.
The second lens element has positive refractive power. Therefore, the total length of the optical shooting lens group is favorably shortened.
The third lens element can have negative refractive power. Therefore, the aberration generated by the second lens is corrected, and the sensitivity of the optical shooting lens group is reduced.
The fourth lens element with positive refractive power has a convex image-side surface at a paraxial region. Further, a point P on the image-side surface of the fourth lens element closest to the image plane may be located at a mirror center of the image-side surface of the fourth lens element. Therefore, the Petzval's sum of the optical shooting lens group can be effectively corrected, so that the imaging surface is flatter, and the correction of the enhanced astigmatism is facilitated. Referring to fig. 17, fig. 17 is a schematic diagram illustrating a point of the image-side surface of the fourth lens element of the optical imaging lens assembly of fig. 1 closest to the image plane. The center of the lens surface of the image side surface of the fourth lens is the intersection point of the image side surface of the fourth lens and an optical axis.
The fifth lens element with refractive power. Therefore, the astigmatism of the optical shooting lens group is corrected to improve the imaging quality.
The sixth lens element with positive refractive power has a concave image-side surface at a paraxial region thereof and at least one convex image-side surface at an off-axis region thereof. Therefore, the shape of the sixth lens is more suitable, which is beneficial to correcting the aberration and distortion around the image, so as to further improve the imaging quality.
The seventh lens element with refractive power has an object-side surface being convex at a paraxial region thereof, and an image-side surface being concave at a paraxial region thereof, and at least one convex surface at an off-axis region thereof. Therefore, the main point of the optical shooting lens group can be far away from the image side end of the optical shooting lens group, so that the back focal length of the optical shooting lens group is shortened, and the overlarge volume of the shooting optical lens group is avoided.
The curvature radius of the image-side surface of the sixth lens element is R12, and the focal length of the optical image capturing lens assembly is f, which satisfies the following conditions: r12/f is more than or equal to 0. Therefore, the main point of the optical image pickup lens assembly is further kept away from the image side end of the optical image pickup lens assembly, so that the total length of the optical image pickup lens assembly is shortened.
The focal length of the first lens is f1, the focal length of the second lens is f2, and the following conditions are satisfied: f2/| f1| < 1.5. Therefore, the optical image pickup lens assembly is beneficial to configuring enough refractive power at the image side end of the optical image pickup lens assembly, so that the optical image pickup lens assembly has the characteristics of wide visual angle, low sensitivity and miniaturization. Preferably, it satisfies the following conditions: f2/| f1| < 1.0.
The curvature radius of the image-side surface of the seventh lens element is R14, and the focal length of the optical image capturing lens assembly is f, which satisfies the following conditions: r14/f < 0.75. Therefore, the image side surface of the seventh lens element helps to further shorten the back focal length of the optical image capturing lens assembly to maintain the miniaturization of the optical image capturing lens assembly. Preferably, it satisfies the following conditions: r14/f < 0.60. More preferably, it satisfies the following conditions: r14/f < 0.45.
The distance between the object-side surface of the first lens element and an image plane is TL, the maximum image height of the optical image capturing lens assembly is ImgH (half of the total length of the diagonal line of the effective sensing area of the electronic sensor), which satisfies the following conditions: TL/ImgH < 3.0. Therefore, the optical shooting lens group is beneficial to maintaining the miniaturization of the optical shooting lens group, and is more suitable for being carried on a light and thin electronic device.
The optical thickness of the fourth lens element is CT4, and the optical thickness of the fifth lens element is CT5, which satisfy the following conditions: 1.25< CT4/CT5< 4.0. Therefore, the problem of poor lens molding can be avoided, and the moldability and the homogeneity of the lens can be improved.
The maximum value of the refractive power of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element, the sixth lens element and the seventh lens element is Powmax, which satisfies the following condition: l Powmax | < 0.90. In detail, the ratio of the focal length of the optical image capturing lens assembly to the focal length of each lens element is the refractive power of each lens element, and the maximum value of the refractive powers of the first lens element to the seventh lens element is Powmax. Therefore, the refractive power of each lens element in the optical image capturing lens assembly can be properly configured to reduce the sensitivity of each lens element, thereby facilitating the manufacture of the optical image capturing lens assembly.
The sum of the optical thicknesses of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element, the sixth lens element and the seventh lens element is Σ CT (i.e., the sum of the optical thickness CT1 of the first lens element, the optical thickness CT2 of the second lens element, the optical thickness CT4 of the third lens element, the optical thickness CT5 of the fifth lens element, the optical thickness of the sixth lens element and the optical thickness of the seventh lens element), the distance between the object-side surface of the first lens element and the image-side surface of the seventh lens element is Td, which satisfies the following conditions: 0.70 ≤ Σ CT/Td < 0.95. Therefore, the thickness configuration of each lens is more suitable, and the assembly and the space configuration of the optical shooting lens group are facilitated.
The seventh lens element having an object-side surface with a radius of curvature R13, an image-side surface with a radius of curvature R14, and a focal length f, wherein: (| R13| + | R14|)/f < 2.0. Therefore, the curvature of the object side surface and the curvature of the image side surface of the seventh lens element can be balanced to correct the aberration of the optical image capturing lens assembly. In addition, when the object-side surface of the seventh lens element is convex at a paraxial region, the above condition helps to make the shape of the seventh lens element more suitable, thereby further improving the effect of correcting aberration.
The thickness of the first lens element along the optical axis is CT1, and the thickness of the second lens element along the optical axis is CT2, which satisfies the following conditions: CT2/CT1< 1.60. Therefore, the thicknesses of the first lens and the second lens are proper, and the assembly and manufacturing yield of the lenses is improved.
An axial distance Dr1r6 between the object-side surface of the first lens element and the image-side surface of the third lens element, and an axial thickness CT4 of the fourth lens element satisfy the following conditions: dr1r6/CT4< 2.50. Therefore, the space occupied by each lens close to the object side end of the optical shooting lens group can be effectively reduced, and the arrangement of each lens in the optical shooting lens group is more compact.
The third lens has an abbe number of V3 and the fifth lens has an abbe number of V5, which satisfy the following conditions: v3+ V5< 60. Therefore, the chromatic aberration and astigmatism of the optical shooting lens group can be corrected.
The focal length of the optical image capturing lens assembly is f, the focal length of the first lens element is f1, and the focal length of the second lens element is f2, which satisfies the following conditions: i f/f1| + | f/f2| < 1.50. Therefore, the refractive power of the first lens element and the second lens element can be properly configured, so as to reduce the sensitivity of each lens element near the object side end of the optical image capturing lens assembly.
The second lens has an abbe number of V2, and the third lens has an abbe number of V3, which satisfy the following conditions: 1.5< V2/V3< 3.5. Therefore, the chromatic aberration and astigmatism of the optical shooting lens group can be corrected.
The optical lens assembly further includes an aperture, and the aperture of the optical lens assembly can be a front aperture or a middle aperture. The front diaphragm means that the diaphragm is arranged between the object to be shot and the first lens, and the middle diaphragm means that the diaphragm is arranged between the first lens and the imaging surface. If the diaphragm is a front diaphragm, a longer distance is generated between the Exit Pupil (Exit Pupil) of the optical photographing lens group and the imaging plane, so that the optical photographing lens group has a Telecentric (telecentricity) effect, and the image receiving efficiency of a CCD (charge coupled device) or a CMOS (complementary metal oxide semiconductor) of the electronic photosensitive element can be increased; the middle diaphragm is helpful to enlarge the field angle of the system, so that the optical shooting lens group has the advantage of a wide-angle lens.
In the optical lens assembly for camera shooting disclosed in the present invention, the lens material can be plastic or glass. When the lens is made of glass, the degree of freedom of the refractive power configuration can be increased. In addition, when the lens is made of plastic, the production cost can be effectively reduced. In addition, an Aspheric Surface (ASP) can be arranged on the surface of the lens, the ASP can be easily made into shapes other than a spherical surface, more control variables are obtained for reducing the aberration, and the number of the lenses required to be used is further reduced, so that the total optical length can be effectively reduced.
In the optical lens assembly for photographing disclosed in the present invention, if the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at the paraxial region. If the refractive power or focal length of the lens element does not define the position of the lens region, it means that the refractive power or focal length of the lens element is the refractive power or focal length of the lens element at the paraxial region.
In the optical imaging lens assembly disclosed in the present invention, the Image Surface (Image Surface) of the optical imaging lens assembly may be a plane or a curved Surface with any curvature, especially a curved Surface with a concave Surface facing the object side, depending on the corresponding electronic photosensitive element.
The optical lens assembly for photographing of the present invention can be provided with at least one Stop, which can be disposed in front of the first lens element, between the lens elements or behind the last lens element, and the Stop can be of a flare Stop (Glare Stop) or Field Stop (Field Stop) type, so as to reduce stray light and improve image quality.
The present invention further provides an image capturing device, which comprises the optical image capturing lens assembly and an electronic photosensitive element, wherein the electronic photosensitive element is disposed on an image plane of the optical image capturing lens assembly. Preferably, the image capturing device may further include a Barrel (Barrel Member), a Holding Member (Holding Member), or a combination thereof.
Referring to fig. 18, 19 and 20, the present invention further provides an electronic device including the image capturing apparatus. The image capturing apparatus 10 can be applied to electronic devices such as a smart phone (as shown in fig. 18), a tablet computer (as shown in fig. 19), and a wearable apparatus (as shown in fig. 20). Preferably, the electronic device may further include a Control unit (Control Units), a Display unit (Display Units), a Storage unit (Storage Units), a Random Access Memory (RAM), or a combination thereof.
The optical image pickup lens assembly of the invention can be applied to an optical system for moving focusing according to requirements, and has the characteristics of excellent aberration correction and good imaging quality. The invention can also be applied to electronic devices such as three-dimensional (3D) image acquisition, digital cameras, mobile devices, tablet computers, smart televisions, network monitoring equipment, driving recorders, backing-up developing devices, motion sensing game machines, wearable devices and the like in many ways. The electronic device disclosed in the foregoing is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the image capturing device of the present invention.
The following provides a detailed description of the embodiments with reference to the accompanying drawings.
< first embodiment >
Referring to fig. 1 and fig. 2, wherein fig. 1 is a schematic view of an image capturing device according to a first embodiment of the invention, and fig. 2 is a graph of spherical aberration, astigmatism and distortion in the first embodiment from left to right. As shown in fig. 1, the image capturing device includes an optical lens assembly (not shown) and an electronic photosensitive element 195. The optical imaging lens assembly includes, in order from an object side to an image side, an aperture stop 100, a first lens element 110, a second lens element 120, a third lens element 130, a fourth lens element 140, a fifth lens element 150, a sixth lens element 160, a seventh lens element 170, an infrared-cut Filter (IR-cut Filter)180, and an image plane 190. Wherein, the electron photosensitive element 195 is disposed on the image forming surface 190. The optical image capturing lens assembly has seven single non-cemented lens elements with refractive power.
The first lens element 110 with positive refractive power has a convex object-side surface 111 at a paraxial region and a concave image-side surface 112 at a paraxial region, and is made of plastic material.
The second lens element 120 with positive refractive power has a convex object-side surface 121 at a paraxial region and a concave image-side surface 122 at a paraxial region, and is made of plastic material.
The third lens element 130 with negative refractive power has a convex object-side surface 131 at a paraxial region and a concave image-side surface 132 at a paraxial region, and is made of plastic material.
The fourth lens element 140 with positive refractive power has a convex object-side surface 141 at a paraxial region and a convex image-side surface 142 at a paraxial region, and both surfaces are aspheric, and a point of the image-side surface 142 closest to the image plane 190 is located at a mirror center of the image-side surface 142 of the fourth lens element.
The fifth lens element 150 with negative refractive power has a concave object-side surface 151 at a paraxial region and a convex image-side surface 152 at a paraxial region, and is made of plastic material.
The sixth lens element 160 with positive refractive power has a convex object-side surface 161 at a paraxial region and a concave image-side surface 162 at a paraxial region, and is made of plastic material, wherein both surfaces are aspheric, and the image-side surface 162 has at least one convex surface at an off-axis region.
The seventh lens element 170 with negative refractive power has a convex object-side surface 171 at a paraxial region and a concave image-side surface 172 at a paraxial region, and both surfaces are aspheric, and the image-side surface 172 has at least one convex surface at an off-axis region.
The ir-cut filter 180 is made of glass, and is disposed between the seventh lens element 170 and the image plane 190, and does not affect the focal length of the optical image capturing lens assembly.
The curve equation of the aspherical surface of each lens described above is as follows:
(ii) a Wherein:
x: the distance between a point on the aspheric surface, which is Y away from the optical axis, and the relative distance between the point and a tangent plane tangent to the intersection point on the aspheric surface optical axis;
y: the perpendicular distance between a point on the aspheric curve and the optical axis;
r: a radius of curvature;
k: the cone coefficient; and
ai: the ith order aspheric coefficients.
In the optical image capturing lens assembly of the first embodiment, the focal length of the optical image capturing lens assembly is F, the aperture value (F-number) of the optical image capturing lens assembly is Fno, and half of the maximum field angle in the optical image capturing lens assembly is HFOV, which has the following values: f 4.28 millimeters (mm), Fno 2.25, HFOV 39.8 degrees (deg.).
The second lens 120 has an abbe number of V2, and the third lens 130 has an abbe number of V3, which satisfy the following conditions: V2/V3-2.38.
The third lens 130 has an abbe number of V3, and the fifth lens 150 has an abbe number of V5, which satisfy the following conditions: v3+ V5 is 47.0.
The thickness of the first lens element 110 on the optical axis is CT1, and the thickness of the second lens element 120 on the optical axis is CT2, which satisfies the following conditions: CT2/CT1 is 0.69.
The optical thickness of the fourth lens element 140 is CT4, and the optical thickness of the fifth lens element 150 is CT5, which satisfy the following conditions: CT4/CT5 is 1.69.
The sum of the thicknesses of the first lens element 110, the second lens element 120, the third lens element 130, the fourth lens element 140, the fifth lens element 150, the sixth lens element 160, and the seventh lens element 170 in the optical axis direction is Σ CT, and the distance between the object-side surface 111 and the image-side surface 172 of the first lens element is Td, which satisfies the following conditions: Σ CT/Td is 0.70.
An axial distance Dr1r6 from the object-side surface 111 to the image-side surface 132 of the third lens element, and an axial thickness CT4 of the fourth lens element 140 satisfy the following condition: dr1r6/CT4 is 2.17.
The focal length of the first lens 110 is f1, and the focal length of the second lens 120 is f2, which satisfies the following conditions: f2/| f1|, 0.61.
The sixth lens element has an image-side surface 162 with a radius of curvature R12 and a focal length f, satisfying the following condition: r12/f is 0.97.
The seventh lens element having an object-side surface 171 with a radius of curvature R13, an image-side surface 172 with a radius of curvature R14, and a focal length f, satisfies the following conditions: (| R13| + | R14|)/f ═ 0.99.
The seventh lens element has an image-side surface 172 with a radius of curvature R14 and a focal length f, satisfying the following condition: r14/f is 0.35.
The distance TL from the object-side surface 111 to the image plane 190 on the optical axis is, the maximum imaging height of the optical image capturing lens assembly is ImgH, and the following conditions are satisfied: TL/ImgH is 1.48.
The focal length of the optical image capturing lens assembly is f, the focal length of the first lens element 110 is f1, and the focal length of the second lens element 120 is f2, which satisfies the following conditions: i f/f1| + | f/f2| -1.12.
The maximum value of the refractive power of the first lens element 110, the second lens element 120, the third lens element 130, the fourth lens element 140, the fifth lens element 150, the sixth lens element 160 and the seventh lens element 170 is Powmax, which satisfies the following condition: powmax | ═ 0.70.
The following table one and table two are referred to cooperatively.
The first table shows detailed structural data of the first embodiment of fig. 1, wherein the unit of the radius of curvature, the thickness and the focal length is mm, and the surfaces 0 to 18 sequentially represent the surfaces from the object side to the image side. Table two shows the aspheric data of the first embodiment, where k is the cone coefficient in the aspheric curve equation, and a4 to a16 represent the 4 th to 16 th order aspheric coefficients of each surface. In addition, the following tables of the embodiments correspond to the schematic diagrams and aberration graphs of the embodiments, and the definitions of the data in the tables are the same as those of the first and second tables of the first embodiment, which will not be described herein.
< second embodiment >
Referring to fig. 3 and fig. 4, wherein fig. 3 is a schematic view of an image capturing apparatus according to a second embodiment of the invention, and fig. 4 is a graph of spherical aberration, astigmatism and distortion of the second embodiment in order from left to right. As shown in fig. 3, the image capturing device includes an optical lens assembly (not shown) and an electronic photosensitive element 295. The optical imaging lens assembly includes, in order from an object side to an image side, an aperture stop 200, a first lens element 210, a second lens element 220, a third lens element 230, a fourth lens element 240, a fifth lens element 250, a sixth lens element 260, a seventh lens element 270, an ir-cut filter 280 and an image plane 290. The electron sensor 295 is disposed on the image plane 290. The optical image capturing lens assembly has seven single non-cemented lens elements with refractive power.
The first lens element 210 with positive refractive power has a convex object-side surface 211 at a paraxial region and a concave image-side surface 212 at a paraxial region, and is made of plastic material.
The second lens element 220 with positive refractive power has a convex object-side surface 221 at a paraxial region and a concave image-side surface 222 at a paraxial region, and is made of plastic material.
The third lens element 230 with negative refractive power has a convex object-side surface 231 at a paraxial region and a concave image-side surface 232 at a paraxial region, and is made of plastic material.
The fourth lens element 240 with positive refractive power has a convex object-side surface 241 in a paraxial region and a convex image-side surface 242 in a paraxial region, and both surfaces are aspheric, and a point of the image-side surface 242 closest to the image plane 290 is located at a mirror center of the image-side surface 242 of the fourth lens element.
The fifth lens element 250 with negative refractive power has a concave object-side surface 251 and a convex image-side surface 252 at a paraxial region, and is made of plastic material.
The sixth lens element 260 with positive refractive power has a convex object-side surface 261 and a concave image-side surface 262, both surfaces being aspheric, and the image-side surface 262 being convex at an off-axis position.
The seventh lens element 270 with negative refractive power has a convex object-side surface 271 at a paraxial region thereof and a concave image-side surface 272 at a paraxial region thereof, wherein both surfaces are aspheric, and the image-side surface 272 has at least one convex surface at an off-axis region thereof.
The ir-cut filter 280 is made of glass and disposed between the seventh lens element 270 and the image plane 290, and does not affect the focal length of the optical lens assembly.
Please refer to the following table three and table four.
In the second embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definitions described in the following table are the same as those in the first embodiment, and are not repeated herein.
< third embodiment >
Referring to fig. 5 and fig. 6, wherein fig. 5 is a schematic view of an image capturing apparatus according to a third embodiment of the invention, and fig. 6 is a graph showing spherical aberration, astigmatism and distortion in order from left to right in the third embodiment. As shown in fig. 5, the image capturing device includes an optical lens assembly (not shown) and an electronic photosensitive element 395. The optical imaging lens assembly includes, in order from an object side to an image side, a first lens element 310, an aperture stop 300, a second lens element 320, a third lens element 330, a fourth lens element 340, a fifth lens element 350, a sixth lens element 360, a seventh lens element 370, an ir-cut filter 380 and an image plane 390. The electron photosensitive element 395 is disposed on the image plane 390. The optical image capturing lens assembly has seven single non-cemented lens elements with refractive power.
The first lens element 310 with positive refractive power has a convex object-side surface 311 at a paraxial region and a concave image-side surface 312 at a paraxial region, and is made of plastic material.
The second lens element 320 with positive refractive power has a convex object-side surface 321 at a paraxial region and a concave image-side surface 322 at a paraxial region, and is made of plastic material.
The third lens element 330 with negative refractive power has a convex object-side surface 331 at a paraxial region and a concave image-side surface 332 at a paraxial region, and is made of plastic material.
The fourth lens element 340 with positive refractive power has an object-side surface 341 being convex at a paraxial region thereof and an image-side surface 342 being convex at a paraxial region thereof, wherein both surfaces are aspheric, and a point of the image-side surface 342 closest to the image plane 390 is located at a mirror center of the image-side surface 342 of the fourth lens element.
The fifth lens element 350 with negative refractive power has a concave object-side surface 351 at a paraxial region and a convex image-side surface 352 at a paraxial region, and is made of plastic material.
The sixth lens element 360 with positive refractive power has a convex object-side surface 361 at a paraxial region thereof and a concave image-side surface 362 at a paraxial region thereof, and both surfaces are aspheric, and the image-side surface 362 has at least one convex surface at an off-axis region thereof.
The seventh lens element 370 with negative refractive power has a convex object-side surface 371 at a paraxial region and a concave image-side surface 372 at a paraxial region, both surfaces being aspheric, and the image-side surface 372 has at least one convex surface at an off-axis region.
The ir-cut filter 380 is made of glass, and is disposed between the seventh lens element 370 and the image plane 390 without affecting the focal length of the optical lens assembly.
Please refer to table five and table six below.
In the third embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definitions described in the following table are the same as those in the first embodiment, and are not repeated herein.
< fourth embodiment >
Referring to fig. 7 and 8, wherein fig. 7 is a schematic view of an image capturing apparatus according to a fourth embodiment of the invention, and fig. 8 is a graph showing spherical aberration, astigmatism and distortion in the fourth embodiment from left to right. As shown in fig. 7, the image capturing device includes an optical lens assembly (not labeled) and an electro-optic device 495. The optical imaging lens assembly includes, in order from an object side to an image side, a first lens element 410, a second lens element 420, an aperture stop 400, a third lens element 430, a fourth lens element 440, a fifth lens element 450, a sixth lens element 460, a seventh lens element 470, an ir-cut filter 480 and an image plane 490. The electro-optic device 495 is disposed on the image plane 490. The optical image capturing lens assembly has seven single non-cemented lens elements with refractive power.
The first lens element 410 with positive refractive power has a convex object-side surface 411 at a paraxial region and a convex image-side surface 412 at a paraxial region, and is made of plastic material.
The second lens element 420 with positive refractive power has a convex object-side surface 421 at a paraxial region and a concave image-side surface 422 at a paraxial region, and is made of plastic material.
The third lens element 430 with negative refractive power has a convex object-side surface 431 at a paraxial region and a concave image-side surface 432 at a paraxial region, and is made of plastic material.
The fourth lens element 440 with positive refractive power has a convex object-side surface 441 at a paraxial region and a convex image-side surface 442 at a paraxial region, and both surfaces are aspheric, and the point of the image-side surface 442 closest to the image plane 490 is located at the mirror center of the image-side surface 442 of the fourth lens element.
The fifth lens element 450 with positive refractive power has a concave object-side surface 451 at a paraxial region and a convex image-side surface 452 at a paraxial region, and is made of plastic material.
The sixth lens element 460 with negative refractive power has a concave object-side surface 461 at a paraxial region and a concave image-side surface 462 at a paraxial region, and is made of plastic material, both surfaces thereof are aspheric, and the image-side surface 462 thereof is convex at an off-axis region.
The seventh lens element 470 with negative refractive power has a convex object-side surface 471 at a paraxial region, a concave image-side surface 472 at a paraxial region, both surfaces being aspheric, and the image-side surface 472 having at least one convex surface at an off-axis region.
The ir-cut filter 480 is made of glass, and is disposed between the seventh lens element 470 and the image plane 490, and does not affect the focal length of the optical lens assembly.
Please refer to table seven and table eight below.
In the fourth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definitions described in the following table are the same as those in the first embodiment, and are not repeated herein.
< fifth embodiment >
Referring to fig. 9 and 10, fig. 9 is a schematic view of an image capturing apparatus according to a fifth embodiment of the invention, and fig. 10 is a graph showing spherical aberration, astigmatism and distortion in the fifth embodiment from left to right. As shown in fig. 9, the image capturing device includes an optical lens assembly (not shown) and an electronic sensor 595. The optical imaging lens assembly includes, in order from an object side to an image side, a first lens element 510, a second lens element 520, an aperture stop 500, a third lens element 530, a fourth lens element 540, a fifth lens element 550, a sixth lens element 560, a seventh lens element 570, an ir-cut filter 580 and an image plane 590. The electronic photosensitive element 595 is disposed on the imaging plane 590. The optical image capturing lens assembly has seven single non-cemented lens elements with refractive power.
The first lens element 510 with positive refractive power has a convex object-side surface 511 at a paraxial region and a convex image-side surface 512 at a paraxial region, and is made of plastic material.
The second lens element 520 with positive refractive power has a convex object-side surface 521 at a paraxial region and a concave image-side surface 522 at a paraxial region, and is made of plastic material.
The third lens element 530 with negative refractive power has a convex object-side surface 531 at a paraxial region and a concave image-side surface 532 at a paraxial region, and is made of plastic material.
The fourth lens element 540 with positive refractive power has an object-side surface 541 being convex in a paraxial region thereof and an image-side surface 542 being convex in a paraxial region thereof, both surfaces being aspheric, and a point of the image-side surface 542 closest to the image plane 590 is located at a mirror center of the image-side surface 542 of the fourth lens element.
The fifth lens element 550 with positive refractive power has a concave object-side surface 551 at a paraxial region and a convex image-side surface 552 at a paraxial region, and is made of plastic material.
The sixth lens element 560 with negative refractive power has a concave object-side surface 561 at a paraxial region and a concave image-side surface 562 at a paraxial region, and both surfaces are aspheric, and the image-side surface 562 has at least one convex surface at an off-axis region.
The seventh lens element 570 with negative refractive power has a convex object-side surface 571 in a paraxial region thereof and a concave image-side surface 572 in a paraxial region thereof, and is made of plastic material, wherein both surfaces are aspheric and the image-side surface 572 has at least one convex surface in an off-axis region thereof.
The ir-cut filter 580 is made of glass, and is disposed between the seventh lens element 570 and the image plane 590, and does not affect the focal length of the optical image capturing lens assembly.
Please refer to table nine and table ten below.
In the fifth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definitions described in the following table are the same as those in the first embodiment, and are not repeated herein.
< sixth embodiment >
Referring to fig. 11 and 12, wherein fig. 11 is a schematic view of an image capturing apparatus according to a sixth embodiment of the invention, and fig. 12 is a graph showing spherical aberration, astigmatism and distortion in the sixth embodiment from left to right. As shown in fig. 11, the image capturing device includes an optical lens assembly (not shown) and an electronic photosensitive element 695. The optical imaging lens assembly includes, in order from an object side to an image side, a first lens element 610, an aperture stop 600, a second lens element 620, a third lens element 630, a fourth lens element 640, a fifth lens element 650, a sixth lens element 660, a seventh lens element 670, an ir-cut filter 680 and an image plane 690. The electron photosensitive element 695 is disposed on the image plane 690. The optical image capturing lens assembly has seven single non-cemented lens elements with refractive power.
The first lens element 610 with negative refractive power has a convex object-side surface 611 at a paraxial region and a concave image-side surface 612 at a paraxial region, and is made of plastic material.
The second lens element 620 with positive refractive power has a convex object-side surface 621 at a paraxial region and a convex image-side surface 622 at a paraxial region, and is made of plastic material.
The third lens element 630 with negative refractive power has a convex object-side surface 631 and a concave image-side surface 632 at a paraxial region, and is made of plastic material.
The fourth lens element 640 with positive refractive power has a concave object-side surface 641 at a paraxial region and a convex image-side surface 642 at a paraxial region, and both surfaces are aspheric, and the point of the image-side surface 642 closest to the image plane 690 is located at the mirror center of the image-side surface 642 of the fourth lens element.
The fifth lens element 650 with negative refractive power has a concave object-side surface 651 at a paraxial region and a convex image-side surface 652 at a paraxial region, and is made of plastic material.
The sixth lens element 660 with positive refractive power has a convex object-side surface 661 in a paraxial region, a concave image-side surface 662 in a paraxial region, both surfaces being aspheric, and the image-side surface 662 has at least one convex surface in an off-axis region.
The seventh lens element 670 with negative refractive power has a convex object-side surface 671 at a paraxial region and a concave image-side surface 672 at a paraxial region, wherein both surfaces are aspheric, and the image-side surface 672 has at least one convex surface at an off-axis region.
The ir-cut filter 680 is made of glass, and is disposed between the seventh lens element 670 and the image plane 690, and does not affect the focal length of the optical lens assembly.
Please refer to the following table eleven and table twelve.
In the sixth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definitions described in the following table are the same as those in the first embodiment, and are not repeated herein.
< seventh embodiment >
Referring to fig. 13 and 14, wherein fig. 13 is a schematic view of an image capturing apparatus according to a seventh embodiment of the invention, and fig. 14 is a graph showing spherical aberration, astigmatism and distortion in the seventh embodiment from left to right. As shown in fig. 13, the image capturing device includes an optical lens assembly (not shown) and an electronic photosensitive element 795. The optical imaging lens assembly includes, in order from an object side to an image side, a first lens element 710, an aperture stop 700, a second lens element 720, a third lens element 730, a fourth lens element 740, a fifth lens element 750, a sixth lens element 760, a seventh lens element 770, an ir-cut filter 780 and an image plane 790. The electrophotographic photosensitive member 795 is disposed on the image plane 790. The optical image capturing lens assembly has seven single non-cemented lens elements with refractive power.
The first lens element 710 with positive refractive power has a concave object-side surface 711 at a paraxial region and a convex image-side surface 712 at a paraxial region, and is made of plastic material.
The second lens element 720 with positive refractive power has a convex object-side surface 721 at a paraxial region and a convex image-side surface 722 at a paraxial region, and is made of plastic material.
The third lens element 730 with negative refractive power has a convex object-side surface 731 at a paraxial region and a concave image-side surface 732 at a paraxial region, and is made of plastic material.
The fourth lens element 740 with positive refractive power has a concave object-side surface 741 at a paraxial region and a convex image-side surface 742 at a paraxial region, and is made of plastic material, wherein both surfaces are aspheric, and a point of the image-side surface 742 closest to the image plane 790 is located at a mirror center of the image-side surface 742 of the fourth lens element.
The fifth lens element 750 with negative refractive power has a concave object-side surface 751 at a paraxial region and a convex image-side surface 752 at a paraxial region, and is made of plastic material.
The sixth lens element 760 with positive refractive power has a convex object-side surface 761 at a paraxial region and a concave image-side surface 762 at a paraxial region, wherein both surfaces are aspheric, and the image-side surface 762 has at least one convex surface at an off-axis region.
The seventh lens element 770 with negative refractive power has a convex object-side surface 771 at a paraxial region and a concave image-side surface 772 at a paraxial region, and is made of plastic material, wherein both surfaces are aspheric and the image-side surface 772 has at least one convex surface at an off-axis region.
The ir-cut filter 780 is made of glass, and is disposed between the seventh lens element 770 and the image plane 790, and does not affect the focal length of the optical lens assembly.
Please refer to the following thirteen tables and fourteen tables.
In the seventh embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definitions described in the following table are the same as those in the first embodiment, and are not repeated herein.
< eighth embodiment >
Referring to fig. 15 and 16, wherein fig. 15 is a schematic view of an image capturing apparatus according to an eighth embodiment of the present invention, and fig. 16 is a graph showing spherical aberration, astigmatism and distortion in the eighth embodiment from left to right. As shown in fig. 15, the image capturing device includes an optical lens assembly (not shown) and an electronic sensor 895. The optical imaging lens assembly includes, in order from an object side to an image side, a first lens element 810, an aperture stop 800, a second lens element 820, a third lens element 830, a fourth lens element 840, a fifth lens element 850, a sixth lens element 860, a seventh lens element 870, an ir-cut filter 880 and an image plane 890. The electrophotographic photosensitive member 895 is disposed on the image forming surface 890. The optical image capturing lens assembly has seven single non-cemented lens elements with refractive power.
The first lens element 810 with positive refractive power has a convex object-side surface 811 at a paraxial region and a concave image-side surface 812 at a paraxial region, and is made of plastic material.
The second lens element 820 with positive refractive power has a convex object-side surface 821 at a paraxial region and a concave image-side surface 822 at a paraxial region, and is made of plastic material.
The third lens element 830 with negative refractive power has a convex object-side surface 831 at a paraxial region and a concave image-side surface 832 at a paraxial region, and is made of plastic material.
The fourth lens element 840 with positive refractive power has a concave object-side surface 841 at a paraxial region and a convex image-side surface 842 at a paraxial region, which are both aspheric, and the point of the image-side surface 842 closest to the image plane 890 is located at the mirror center of the image-side surface 842 of the fourth lens element.
The fifth lens element 850 with negative refractive power has a concave object-side surface 851 at a paraxial region and a convex image-side surface 852 at a paraxial region, and is made of plastic material.
The sixth lens element 860 with positive refractive power has an object-side surface 861 being convex in a paraxial region thereof and an image-side surface 862 being concave in a paraxial region thereof, wherein both surfaces are aspheric, and the image-side surface 862 has at least one convex surface in an off-axis region thereof.
The seventh lens element 870 with positive refractive power has a convex object-side surface 871 in a paraxial region and a concave image-side surface 872 in a paraxial region, both surfaces thereof being aspheric, and the image-side surface 872 has at least one convex surface in an off-axis region.
The ir-cut filter 880 is made of glass, and is disposed between the seventh lens element 870 and the image plane 890, and does not affect the focal length of the optical image capturing lens assembly.
Please refer to table fifteen and table sixteen below.
In the eighth embodiment, the curve equation of the aspherical surface represents the form as in the first embodiment. In addition, the definitions described in the following table are the same as those in the first embodiment, and are not repeated herein.
The image capturing device can be arranged in the electronic device. The optical imaging lens assembly provided by the invention uses seven lens elements with refractive power, wherein the image side surface of the seventh lens element is concave at a paraxial region. When a specific condition is satisfied, the image-side surface of the seventh lens element helps to shorten the back focal length of the optical image capturing lens assembly to maintain miniaturization of the optical image capturing lens assembly. In addition, the main point of the optical image capturing lens assembly is kept away from the image side end of the optical image capturing lens assembly, so that the total length of the optical image capturing lens assembly is shortened. Moreover, it is helpful to dispose sufficient refractive power at the image side of the optical image capturing lens assembly, so that the optical image capturing lens assembly has the characteristics of wide viewing angle, low sensitivity and miniaturization. The optical image pickup lens assembly provided by the invention can simultaneously meet the requirements of large aperture, wide visual angle, miniaturization and high imaging quality.
Although the present invention has been described with reference to the above embodiments, it should be understood that the invention is not limited thereto. Various modifications and alterations may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention is subject to the scope defined by the appended claims.
Claims (27)
1. An optical imaging lens assembly, in order from an object side to an image side comprising: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element, wherein the first lens element has negative refractive power, the second lens element has positive refractive power, surfaces of the sixth lens element and the image-side surface are aspheric, the surface of the seventh lens element at a paraxial region thereof is concave, the surface of the seventh lens element at an off-axis region thereof is convex, and the surfaces of the seventh lens element at an object side and an image side thereof are aspheric;
wherein the total number of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element, the sixth lens element and the seventh lens element are all single non-cemented lens elements, the curvature radius of the image-side surface of the sixth lens element is R12, the focal length of the optical image capturing lens assembly is f, the focal length of the first lens element is f1, the focal length of the second lens element is f2, the axial distance from the object-side surface of the first lens element to an image plane is TL, the maximum imaging height of the optical image capturing lens assembly is ImgH, and the following conditions are satisfied:
0≤R12/f；
f2/| f1| < 1.0; and
TL/ImgH<3.0。
2. the optical imaging lens assembly of claim 1, wherein the image-side surface of the sixth lens element is concave at a paraxial region and the image-side surface of the sixth lens element has at least one convex surface at an off-axis region.
3. The optical image capturing lens assembly of claim 1, wherein the fourth lens element has an axial thickness of CT4, and the fifth lens element has an axial thickness of CT5, wherein the following conditions are satisfied:
1.25<CT4/CT5<4.0。
4. the optical imaging lens assembly of claim 1 wherein the maximum refractive power of the first, second, third, fourth, fifth, sixth and seventh lenses is Powmax, satisfying the following condition:
|Powmax|<0.90。
5. the optical imaging lens assembly of claim 1 wherein the sum of the thicknesses of the first, second, third, fourth, fifth, sixth and seventh lenses on the optical axis is Σ CT, the axial distance between the object-side surface of the first lens element and the image-side surface of the seventh lens element is Td, satisfying the following condition:
0.70≤ΣCT/Td<0.95。
6. the optical imaging lens assembly of claim 1 wherein the third lens element has an abbe number of V3 and the fifth lens element has an abbe number of V5, wherein the following conditions are satisfied:
V3+V5<60。
7. the optical imaging lens assembly of claim 1 wherein the second lens element has an abbe number of V2 and the third lens element has an abbe number of V3, wherein the following conditions are satisfied:
1.5<V2/V3<3.5。
8. the optical image capturing lens assembly of claim 1, wherein the seventh lens element has a convex object-side surface at a paraxial region.
9. An image capturing device, comprising:
the optical imaging lens group of claim 1; and
and the electronic photosensitive element is arranged on the imaging surface of the optical camera lens group.
10. An optical imaging lens assembly, in order from an object side to an image side comprising: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element, wherein the first lens element has negative refractive power, the second lens element has positive refractive power, surfaces of the sixth lens element and the image-side surface are aspheric, the surface of the seventh lens element at a paraxial region thereof is concave, the surface of the seventh lens element at an off-axis region thereof is convex, and the surfaces of the seventh lens element at an object side and an image side thereof are aspheric;
wherein the total number of the lenses with refractive power in the optical imaging lens assembly is seven, the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element, the sixth lens element and the seventh lens element are all single non-cemented lenses, the curvature radius of the image-side surface of the sixth lens element is R12, the curvature radius of the image-side surface of the seventh lens element is R14, the focal length of the optical imaging lens assembly is f, the axial distance from the object-side surface of the first lens element to an imaging surface is TL, the maximum imaging height of the optical imaging lens assembly is ImgH, and the following conditions are satisfied:
0≤R12/f；
r14/f < 0.75; and
TL/ImgH<3.0。
11. the optical imaging lens assembly of claim 10, wherein the image-side surface of the sixth lens element is concave at a paraxial region and the image-side surface of the sixth lens element has at least one convex surface at an off-axis region.
12. The optical image capturing lens assembly of claim 10, wherein the fourth lens element has an axial thickness of CT4, and the fifth lens element has an axial thickness of CT5, which satisfies the following conditions:
1.25<CT4/CT5<4.0。
13. the optical imaging lens assembly of claim 10 wherein the maximum refractive power of the first, second, third, fourth, fifth, sixth and seventh lenses is Powmax, satisfying the following condition:
|Powmax|<0.90。
14. the optical imaging lens assembly of claim 10, wherein the curvature radius of the image-side surface of the seventh lens element is R14, and the focal length of the optical imaging lens assembly is f, satisfying the following condition:
R14/f<0.60。
15. the optical imaging lens assembly of claim 10 wherein the third lens element has an abbe number of V3 and the fifth lens element has an abbe number of V5, wherein the following conditions are satisfied:
V3+V5<60。
16. the optical imaging lens assembly of claim 10 wherein the second lens element has an abbe number of V2 and the third lens element has an abbe number of V3, wherein the following conditions are satisfied:
1.5<V2/V3<3.5。
17. the optical image capturing lens assembly of claim 10, wherein the seventh lens element has a convex object-side surface at a paraxial region.
18. An image capturing device, comprising:
the optical imaging lens assembly of claim 10; and
and the electronic photosensitive element is arranged on the imaging surface of the optical camera lens group.
19. An optical imaging lens assembly, in order from an object side to an image side comprising: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element, wherein the first lens element has negative refractive power, the second lens element has positive refractive power, surfaces of the sixth lens element and the image-side surface are aspheric, the surface of the seventh lens element at a paraxial region thereof is concave, the surface of the seventh lens element at an off-axis region thereof is convex, and the surfaces of the seventh lens element at an object side and an image side thereof are aspheric;
wherein the total number of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element, the sixth lens element and the seventh lens element are all single non-cemented lens elements, the curvature radius of the image-side surface of the sixth lens element is R12, the focal length of the optical image capturing lens assembly is f, the focal length of the first lens element is f1, the focal length of the second lens element is f2, the axial distance from the object-side surface of the first lens element to an image plane is TL, the maximum imaging height of the optical image capturing lens assembly is ImgH, and the following conditions are satisfied:
0≤R12/f；
i f/f1| + | f/f2| < 1.50; and
TL/ImgH<3.0。
20. the optical imaging lens assembly of claim 19, wherein the sixth lens element has a concave image-side surface at a paraxial region and the sixth lens element has at least one convex image-side surface at an off-axis region.
21. The optical image capturing lens assembly of claim 19, wherein the fourth lens element has an axial thickness of CT4, and the fifth lens element has an axial thickness of CT5, wherein the following conditions are satisfied:
1.25<CT4/CT5<4.0。
22. the optical imaging lens assembly of claim 19 wherein the maximum refractive power of the first, second, third, fourth, fifth, sixth and seventh lenses is Powmax, satisfying the following condition:
|Powmax|<0.90。
23. the optical imaging lens assembly of claim 19 wherein the sum of the thicknesses of the first, second, third, fourth, fifth, sixth and seventh lenses is Σ CT, the axial distance between the object-side surface of the first lens element and the image-side surface of the seventh lens element is Td, satisfying the following condition:
0.70≤ΣCT/Td<0.95。
24. the optical imaging lens assembly of claim 19 wherein the third lens element has an abbe number of V3 and the fifth lens element has an abbe number of V5, wherein the following conditions are satisfied:
V3+V5<60。
25. the optical imaging lens assembly of claim 19 wherein the second lens element has an abbe number of V2 and the third lens element has an abbe number of V3, wherein the following conditions are satisfied:
1.5<V2/V3<3.5。
26. the optical image capturing lens assembly of claim 19, wherein the seventh lens element has a convex object-side surface at a paraxial region.
27. An image capturing device, comprising:
the optical imaging lens assembly of claim 19; and
and the electronic photosensitive element is arranged on the imaging surface of the optical camera lens group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811119810.3A CN109061855B (en) | 2015-07-01 | 2015-07-01 | Optical camera lens assembly and image capturing device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| TWI629535B (en) * | 2017-02-18 | 2018-07-11 | 大立光電股份有限公司 | Image capturing optical system, imaging apparatus and electronic device |
| US11092782B2 (en) | 2017-06-08 | 2021-08-17 | Zhejiang Sunny Optical Co., Ltd | Camera lens assembly |
| CN107621681B (en) * | 2017-09-15 | 2023-05-26 | 浙江舜宇光学有限公司 | Optical imaging lens |
| WO2019052144A1 (en) * | 2017-09-15 | 2019-03-21 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN107490841B (en) * | 2017-09-21 | 2020-06-23 | 浙江舜宇光学有限公司 | Image pickup lens group |
| WO2019056758A1 (en) | 2017-09-21 | 2019-03-28 | 浙江舜宇光学有限公司 | Camera lens assembly |
| TWI636295B (en) * | 2017-11-23 | 2018-09-21 | 大立光電股份有限公司 | Optical imaging lens assembly, image capturing unit and electronic device |
| TWI655474B (en) * | 2017-12-22 | 2019-04-01 | 大立光電股份有限公司 | Image taking optical lens, image capturing device and electronic device |
| CN108279484B (en) * | 2018-03-13 | 2024-01-26 | 浙江舜宇光学有限公司 | Optical imaging system |
| CN110673300B (en) * | 2018-07-02 | 2022-06-24 | 江西晶超光学有限公司 | Optical pick-up lens, image capturing device and electronic device |
| CN108663780B (en) * | 2018-08-06 | 2023-06-16 | 浙江舜宇光学有限公司 | Optical imaging lens |
| CN109856769B (en) * | 2018-12-27 | 2020-12-22 | 瑞声光学解决方案私人有限公司 | Image pickup optical lens |
| CN109828351B (en) * | 2018-12-27 | 2020-12-22 | 瑞声光学解决方案私人有限公司 | Image pickup optical lens |
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| TWI687713B (en) * | 2019-04-24 | 2020-03-11 | 大立光電股份有限公司 | Optical lens assembly, image capturing unit and electronic device |
| CN110361838B (en) * | 2019-06-29 | 2021-09-21 | 瑞声光学解决方案私人有限公司 | Image pickup optical lens |
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| CN110361836B (en) * | 2019-06-29 | 2021-09-21 | 瑞声光学解决方案私人有限公司 | Image pickup optical lens |
| CN110361835B (en) * | 2019-06-29 | 2021-09-21 | 瑞声光学解决方案私人有限公司 | Image pickup optical lens |
| CN110361837B (en) * | 2019-06-29 | 2021-09-21 | 瑞声光学解决方案私人有限公司 | Image pickup optical lens |
| CN115657268A (en) * | 2019-08-09 | 2023-01-31 | 华为技术有限公司 | Camera module and terminal equipment |
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| CN111198438A (en) * | 2020-03-05 | 2020-05-26 | 玉晶光电(厦门)有限公司 | Optical imaging lens |
| CN111399180A (en) | 2020-04-27 | 2020-07-10 | 浙江舜宇光学有限公司 | Image pickup lens group |
| CN111552063B (en) * | 2020-05-20 | 2021-07-30 | 诚瑞光学(常州)股份有限公司 | Image pickup optical lens |
| CN113740997A (en) * | 2020-05-29 | 2021-12-03 | 华为技术有限公司 | Lens assembly, camera module and electronic equipment |
| CN114791659B (en) * | 2021-01-25 | 2024-03-29 | 浙江舜宇光学有限公司 | Image pickup lens |
| CN112925085B (en) * | 2021-01-25 | 2023-11-07 | 江西晶超光学有限公司 | Optical system, image capturing module and electronic equipment |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109116527B (en) | 2021-04-20 |
| CN109116527A (en) | 2019-01-01 |
| CN109061855A (en) | 2018-12-21 |
| CN106324811A (en) | 2017-01-11 |
| CN106324811B (en) | 2018-11-02 |
| CN109164556A (en) | 2019-01-08 |
| CN109164556B (en) | 2021-01-12 |
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