CN109946823B - Optical imaging lens - Google Patents
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Abstract
The application discloses an optical imaging lens, which comprises a first lens with positive focal power and an object side surface, a reflecting surface and an image side surface, wherein the object side surface and the image side surface are aspheric mirror surfaces, the reflecting surface is a plane mirror surface, the first lens is configured to enable light entering the first lens from the object side surface along the direction of a Y optical axis to be emitted from the image side surface along the direction of an X optical axis after being reflected by the reflecting surface, and the Y optical axis is approximately perpendicular to the X optical axis; the optical imaging lens further sequentially comprises, from the first lens to the image side along the X-ray axis: the optical imaging lens comprises a second lens, a third lens, a fourth lens and a fifth lens with optical power, wherein the distance G1 between the vertex of the object side surface of the first lens on the Y optical axis and the intersection point of the reflecting surface of the first lens and the Y optical axis on the Y optical axis, the distance G2 between the intersection point of the reflecting surface of the first lens and the X optical axis and the vertex of the image side surface of the first lens on the X optical axis and the total effective focal length f of the optical imaging lens satisfy 0.3 < (G1+G2)/f < 0.6.
Description
Technical Field
The present application relates to an optical imaging lens, and more particularly, to an optical imaging lens including five lenses.
Background
In recent years, the popularity of portable electronic products such as cellular phones, computers, and digital cameras has led to rapid development of imaging lens technology, and the trend toward miniaturization of these electronic products has also led to an increasing size requirement for imaging lenses. In shortening the imaging lens length, it is also necessary to ensure excellent imaging quality of the lens in order to avoid deterioration of the imaging effect. However, in designing an imaging lens, a lens having both a small size and good imaging quality may be manufactured without simply scaling down a lens having good imaging quality, and in practice, practical problems of the actual molding and assembling process of the lens must be considered. In addition, on the basis of the miniaturization characteristic, people hope to enable the focal length of the imaging lens to be larger, the magnification of the lens to be higher, and the shooting effect of long-range scenes to be better.
Therefore, the design difficulty of the miniaturized lens (especially the miniaturized tele lens) is obviously higher than that of the traditional lens, and how to manufacture the lens which meets the miniaturization requirement of electronic products, has the tele characteristic and has good imaging quality is one of the targets which are always and hot pursued in the optical imaging field.
Disclosure of Invention
The present application provides an optical imaging lens, e.g. a tele lens, applicable to a portable electronic product, which at least solves or partially solves at least one of the above-mentioned drawbacks of the prior art.
The present application provides an optical imaging lens including a prism having optical power and having an object side surface, a reflection surface, and an image side surface, wherein the object side surface and the image side surface may each be an aspherical mirror surface, the reflection surface may be a plane mirror surface, and the first lens is configured such that light incident to the first lens through the object side surface in a direction of a Y optical axis, which is substantially perpendicular to the X optical axis, exits through the image side surface in a direction of the X optical axis after being reflected by the reflection surface; the optical imaging lens further sequentially comprises, from the first lens to the image side along the X-ray axis: a second lens, a third lens, a fourth lens, and a fifth lens having optical power.
In one embodiment, a distance G1 between an apex of the object side surface of the first lens on the Y optical axis and an intersection point of the reflecting surface of the first lens and the Y optical axis on the Y optical axis, a distance G2 between an intersection point of the reflecting surface of the first lens and the X optical axis and an apex of the image side surface of the first lens on the X optical axis, and a total effective focal length f of the optical imaging lens may satisfy 0.3 < (g1+g2)/f < 0.6.
In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens may satisfy |f/f1| < 2.5.
In one embodiment, the total effective focal length f of the optical imaging lens and half of the ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens may satisfy ImgH/f < 0.4.
In one embodiment, the total effective focal length f of the optical imaging lens and the combined focal length f34 of the third lens and the fourth lens may satisfy-1.0 < f/f34 < 2.5.
In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f5 of the fifth lens may satisfy-2.0 < f/f5 < 0.5.
In one embodiment, the total effective focal length f of the optical imaging lens and the radius of curvature R1 of the object side surface of the first lens may satisfy 0.5 < f/R1 < 2.0.
In one embodiment, the total effective focal length f of the optical imaging lens and the distance BFL between the image side surface of the fifth lens and the imaging surface of the optical imaging lens on the X-axis may satisfy BFL/f < 0.5.
In one embodiment, the radius of curvature R2 of the image side of the first lens and the radius of curvature R3 of the object side of the second lens may satisfy | (R2-R3)/(R2+R3) |0.5.
In one embodiment, the radius of curvature R6 of the image side of the third lens and the radius of curvature R7 of the object side of the fourth lens may satisfy 0.5.ltoreq.R6/R7 < 1.5.
In one embodiment, the center thickness CT2 of the second lens element on the X-axis and the distance Dr5r8 between the object-side surface of the third lens element and the image-side surface of the fourth lens element on the X-axis may satisfy CT2/Dr5r 8< 0.5.
In one embodiment, the refractive index N2 of the second lens and the refractive index N4 of the fourth lens may satisfy 1.60 < (N2+N4)/2 < 1.75.
In one embodiment, the sum ΣAT of the air interval T45 between the fourth lens and the fifth lens on the X-axis and the air interval between any two adjacent lenses in the first lens to the fifth lens on the X-axis can satisfy 0.3 < T45/ΣAT.ltoreq.0.8.
The application adopts five lenses, and the optical imaging lens has at least one beneficial effects of long focal length, short lens depth, high imaging quality and the like by reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing among the lenses and the like and adopting a refractive-reflective lens mode.
Drawings
Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:
Fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application;
Fig. 2A to 2B show an astigmatism curve and a distortion curve, respectively, of the optical imaging lens of embodiment 1;
fig. 3 is a schematic diagram showing the structure of an optical imaging lens according to embodiment 2 of the present application;
Fig. 4A to 4B show an astigmatism curve and a distortion curve, respectively, of the optical imaging lens of embodiment 2;
fig. 5 shows a schematic structural view of an optical imaging lens according to embodiment 3 of the present application;
fig. 6A to 6B show an astigmatism curve and a distortion curve, respectively, of the optical imaging lens of embodiment 3;
fig. 7 shows a schematic configuration diagram of an optical imaging lens according to embodiment 4 of the present application;
fig. 8A to 8B show an astigmatism curve and a distortion curve, respectively, of the optical imaging lens of embodiment 4;
fig. 9 shows a schematic configuration diagram of an optical imaging lens according to embodiment 5 of the present application;
fig. 10A to 10B show an astigmatism curve and a distortion curve of the optical imaging lens of embodiment 5, respectively;
Fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application;
fig. 12A to 12B show an astigmatism curve and a distortion curve, respectively, of the optical imaging lens of embodiment 6;
fig. 13 is a schematic diagram showing the structure of an optical imaging lens according to embodiment 7 of the present application;
Fig. 14A to 14B show an astigmatism curve and a distortion curve of the optical imaging lens of embodiment 7, respectively;
Fig. 15 shows a schematic structural view of an optical imaging lens according to embodiment 8 of the present application;
fig. 16A to 16B show an astigmatism curve and a distortion curve of the optical imaging lens of embodiment 8, respectively;
Fig. 17 is a schematic diagram showing the structure of an optical imaging lens according to embodiment 9 of the present application;
Fig. 18A to 18B show an astigmatism curve and a distortion curve, respectively, of the optical imaging lens of embodiment 9;
Fig. 19 is a schematic diagram showing the structure of an optical imaging lens according to embodiment 10 of the present application;
fig. 20A to 20B show an astigmatism curve and a distortion curve, respectively, of the optical imaging lens of embodiment 10;
fig. 21 shows a schematic configuration diagram of an optical imaging lens according to embodiment 11 of the present application;
fig. 22A to 22B show an astigmatism curve and a distortion curve, respectively, of the optical imaging lens of embodiment 11;
fig. 23 is a schematic diagram showing the structure of an optical imaging lens according to embodiment 12 of the present application;
Fig. 24A to 24B show an astigmatism curve and a distortion curve, respectively, of the optical imaging lens of embodiment 12;
fig. 25 shows a schematic view of a light ray traveling path of an optical imaging lens according to an embodiment of the present application.
Detailed Description
For a better understanding of the application, various aspects of the application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the application and is not intended to limit the scope of the application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that in the present specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Accordingly, the second lens discussed below may also be referred to as a third lens or a fourth lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for convenience of explanation. In particular, the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The figures are merely examples and are not drawn to scale.
Herein, the paraxial region refers to a region near the X-axis. If the lens surface is convex and the convex position is not defined, then the lens surface is convex at least in 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 least in the paraxial region. The surface of each lens closest to the object side is referred to as the object side of the lens, and the surface of each lens closest to the image side is referred to as the image side of the lens.
It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the application, use of "may" means "one or more embodiments of the application. Also, the term "exemplary" is intended to refer to an example or illustration.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
The features, principles, and other aspects of the present application are described in detail below.
The optical imaging lens according to the exemplary embodiment of the present application may include, for example, five lenses having optical power, i.e., a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The five lenses are arranged in sequence from the object side to the image side, and each adjacent lens can have an air space therebetween.
The first lens may be a reflective element such as a reflective prism. The first lens may be disposed at any desired angle to bend the optical path. The first lens may be configured to deflect the incident light path by a predetermined degree (e.g., without limitation, 90 degrees), for example, to shift the incident light path from traveling along a vertical optical axis (e.g., the Y-axis in fig. 1) to traveling along a horizontal optical axis (e.g., the X-axis in fig. 1) (or to shift the incident light path from traveling along a horizontal optical axis to traveling along a vertical optical axis).
In an exemplary embodiment, the first lens may be a reflective prism. Referring to fig. 1 and 25, the prism E1 has an entrance surface S1 (object side surface), a reflection surface S2, and an exit surface S3 (image side surface). When light from the object enters the prism E1 along the direction of the Y optical axis via the incident surface S1, the light is totally reflected by the reflecting surface S2 and is turned to the emitting surface S3 to emit along the direction of the X optical axis, and sequentially passes through the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5 and the optical filter E6, and finally forms an image on the imaging surface S14. Wherein the Y-axis is at an angle to the X-axis, such as, but not limited to, the Y-axis being substantially perpendicular to the X-axis. And the reflecting surface passes through the intersection point of the Y optical axis and the X optical axis, namely, the reflecting surface is positioned on the Y optical axis and the X optical axis.
In an embodiment of the present application, at least one of the object side surface and the image side surface of each lens is an aspherical mirror surface, i.e., at least one of the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens is an aspherical mirror surface. The aspherical lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. By adopting the aspherical lens, aberration occurring at the time of imaging can be eliminated as much as possible, thereby improving imaging quality. Optionally, the object side surface and the image side surface of each of the second lens, the third lens, the fourth lens and the fifth lens are aspherical mirror surfaces.
In an exemplary embodiment, both the object side and the image side of the first lens may be aspherical mirrors, and the reflective surfaces thereof may be planar mirrors. By reasonably configuring the surface shape of the first lens, coma and astigmatism generated by the first lens can be effectively reduced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.3 < (g1+g2)/f < 0.6, where G1 is a distance on the Y axis from an object side surface of the first lens at an apex of the Y axis to an intersection point of a reflecting surface of the first lens and the Y axis, G2 is a distance on the X axis from an intersection point of a reflecting surface of the first lens and the X axis to an apex of an image side surface of the first lens on the X axis, and f is a total effective focal length of the optical imaging lens. More specifically, G1, G2 and f may further satisfy 0.40.ltoreq.G1+G2)/f.ltoreq.0.51. The condition that (G1+G2)/f is less than 0.6 is satisfied, and the system can be ensured to have longer focal length when the depth of the imaging lens is reduced, so that the optical imaging lens has good long-range shooting effect.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy a conditional expression ImgH/f < 0.4, where f is the total effective focal length of the optical imaging lens, and ImgH is half of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens. More specifically, imgH and f may further satisfy 0.20.ltoreq.ImgH/f.ltoreq.0.35, for example 0.26.ltoreq.ImgH/f.ltoreq.0.31. The condition that ImgH/f is smaller than 0.4 is satisfied, and the system can be ensured to have a large enough image plane to present more detail information of a shot scene under the condition that the optical imaging lens has a longer focal length.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression |f/f1| < 2.5, where f is the total effective focal length of the optical imaging lens and f1 is the effective focal length of the first lens. More specifically, f and f1 further satisfy 0.07.ltoreq.f1.ltoreq.2.10. The effective focal length of the first lens (such as a prism) is reasonably distributed, so that the imaging light beam can be effectively converged, the image surface is ensured to have enough illumination, the focal power can be prevented from being concentrated in the first lens, and the sensitivity of the first lens is reduced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-1.0 < f/f34 < 2.5, where f is the total effective focal length of the optical imaging lens and f34 is the combined focal length of the third lens and the fourth lens. More specifically, f and f34 may further satisfy-0.77.ltoreq.fF34.ltoreq.2.40. By reasonably controlling the combined focal length of the third lens and the fourth lens, spherical aberration, coma aberration and astigmatism generated by the third lens and the fourth lens can be effectively balanced, and imaging quality is improved.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-2.0 < f/f5 < 0.5, where f is the total effective focal length of the optical imaging lens and f5 is the effective focal length of the fifth lens. More specifically, f and f5 may further satisfy-1.93.ltoreq.f5.ltoreq.0.42. The effective focal length of the fifth lens is reasonably controlled, so that the angle of the principal ray is guaranteed to be matched with the chip, the relative illuminance of the image surface is improved, and distortion and chromatic aberration which are not completely eliminated from the prism to the fourth lens can be further reduced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.5 < f/R1 < 2.0, where f is the total effective focal length of the optical imaging lens, and R1 is the radius of curvature of the object side surface of the first lens. More specifically, f and R1 may further satisfy 0.62.ltoreq.f/R1.ltoreq.1.90. The curvature radius of the object side surface of the first lens is reasonably configured, so that the deflection angle of light rays on the mirror surface can be reduced, and the sensitivity of the mirror surface is reduced; in addition, the generation of strong total reflection ghost images in the prism due to overlarge deflection angles of light rays can be avoided. Optionally, the object side surface of the first lens is a convex surface.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition BFL/f < 0.5, where f is the total effective focal length of the optical imaging lens, and BFL is the distance from the image side surface of the fifth lens to the imaging surface on the X-axis. More specifically, BFL and f may further satisfy 0.2.ltoreq.BFL/f.ltoreq.0.45, e.g., 0.27.ltoreq.BFL/f.ltoreq.0.43. The BFL/f is less than 0.5, which not only ensures the system to have longer focal length, but also shortens the size of the rear end of the lens to ensure the miniaturization characteristic of the lens.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression | (R2-R3)/(r2+r3) |0.5, where R2 is the radius of curvature of the image side of the first lens and R3 is the radius of curvature of the object side of the second lens. More specifically, R2 and R3 may further satisfy 0.08.ltoreq.I (R2-R3)/(R2+R3) |.ltoreq.0.43. The condition (R2-R3)/(R2+R3) is less than or equal to 0.5, the deflection of light rays on the image side surface of the first lens and the object side surface of the second lens can be effectively slowed down, the sensitivity of the two mirror surfaces is reduced, and meanwhile, the coma, astigmatism and chromatic aberration generated by the two mirror surfaces can be effectively balanced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.5+.R6/R7 < 1.5, where R6 is a radius of curvature of an image side of the third lens element and R7 is a radius of curvature of an object side of the fourth lens element. More specifically, R6 and R7 may further satisfy 0.58.ltoreq.R6/R7.ltoreq.1.36. Satisfies the condition that R6/R7 is less than or equal to 0.5 and less than 1.5, can effectively balance astigmatism, distortion and field curvature generated by the image side surface of the third lens and the object side surface of the fourth lens, and ensures excellent imaging quality.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression CT2/Dr5r8 < 0.5, where CT2 is the center thickness of the second lens element on the X-axis, dr5r8 is the distance between the object-side surface of the third lens element and the image-side surface of the fourth lens element on the X-axis. More specifically, CT2 and Dr5r8 may further satisfy 0.10.ltoreq.CT 2/Dr5r 8.ltoreq.0.37. The conditional CT2/Dr5r8 is less than 0.5, and the deflection angles of light rays in the second lens, the third lens and the fourth lens can be slowed down while the manufacturability of the second lens, the third lens and the fourth lens is ensured, so that the generation of total reflection ghost images caused by overlarge deflection angles is avoided.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.3 < T45/Σat is less than or equal to 0.8, where T45 is an air space on the X-axis between the fourth lens and the fifth lens, Σat is a sum of air spaces on the X-axis between any adjacent two lenses of the first lens to the fifth lens. More specifically, T45 and ΣAT may further satisfy 0.37+.T45/ΣAT+.0.80. The ratio of T45 to ΣAT is reasonably controlled, so that under the condition that the lens has smaller depth, the incident angle of light entering the object side of any lens from the first lens to the fifth lens can be slowed down, and the sensitivity of the object side is reduced; in addition, too severe tolerance conditions can be avoided, and the actual manufacturability is enhanced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.60 < (n2+n4)/2 < 1.75, where N2 is the refractive index of the second lens and N4 is the refractive index of the fourth lens. More specifically, N2 and N4 may further satisfy 1.62.ltoreq.N2+N4)/2.ltoreq.1.73. The refractive indexes of the second lens and the fourth lens are reasonably controlled, so that chromatic aberration generated by the second lens and the fourth lens can be reduced, and total reflection ghost images generated by overlarge deflection angles of light rays in the second lens and the fourth lens can be avoided.
In an exemplary embodiment, the optical imaging lens may further include a diaphragm to improve imaging quality of the lens. Alternatively, a diaphragm may be provided between the first lens and the second lens.
Optionally, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on the imaging surface.
The optical imaging lens according to the above embodiment of the present application may employ a plurality of lenses, for example, five lenses as described above. By reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like, the volume of the lens can be effectively reduced, the sensitivity of the lens can be reduced, and the processability of the lens can be improved, so that the optical imaging lens is more beneficial to production and processing and is applicable to portable electronic products. The optical imaging lens with the configuration can also have the beneficial effects of long focal length, short lens depth, high imaging quality and the like.
However, it will be appreciated by those skilled in the art that the number of lenses making up the optical imaging lens can be varied to achieve the various results and advantages described in this specification without departing from the technical solution claimed in the present application. For example, although the description has been made by taking five lenses as an example in the embodiment, the optical imaging lens is not limited to include five lenses. The optical imaging lens may also include other numbers of lenses, if desired.
Specific examples of the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.
Example 1
An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2B. Fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, from an object side to an image side: a prism E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S14.
The prism E1 has positive optical power and has an incident surface S1, a reflecting surface S2 and an exit surface S3, wherein the incident surface S1 is a convex surface, the reflecting surface S2 is a plane, and the exit surface S3 is a convex surface. Light incident through the incident surface S1 in the direction of the Y optical axis is reflected by the reflecting surface S2 and then emitted through the emitting surface S3 in the direction of the X optical axis, wherein the Y optical axis is substantially perpendicular to the X optical axis and the reflecting surface S2 passes through the intersection point of the Y optical axis and the X optical axis.
The second lens element E2 has negative refractive power, wherein an object-side surface S4 thereof is concave, and an image-side surface S5 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S6 thereof is convex, and an image-side surface S7 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S8 thereof is convex, and an image-side surface S9 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S10 thereof is concave and an image-side surface S11 thereof is convex. The filter E6 has an object side surface S12 and an image side surface S13. Light from the object sequentially passes through the respective surfaces S1 to S13 and is finally imaged on the imaging surface S14.
In this embodiment, the optical imaging lens may further provide a diaphragm (not shown) between the prism E1 and the second lens E2 to further improve the imaging quality of the lens.
Table 1 shows the basic parameter table of the optical imaging lens of embodiment 1, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm).
TABLE 1
Where f is the total effective focal length of the optical imaging lens, G1 is the distance between the vertex of the object side surface S1 of the first lens on the Y optical axis and the intersection point of the reflecting surface S2 of the first lens and the Y optical axis on the Y optical axis, and G2 is the distance between the intersection point of the reflecting surface S2 of the first lens and the X optical axis and the vertex of the image side surface S3 of the first lens on the X optical axis.
In embodiment 1, the object side surface and the image side surface of any one of the incident surface S1 and the exit surface S3 of the prism E1 and the second lens E2 to the fifth lens E5 are aspherical, and the surface shape x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:
Wherein X is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the X optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the aspherical i-th order. The higher order coefficients A 4、A6、A8、A10、A12、A14、A16、A18 and A 20 that can be used for each of the aspherical mirror surfaces S1, S3-S11 in example 1 are given in Table 2 below.
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -3.0442E-02 | -1.1581E-03 | -2.7062E-05 | -1.8692E-06 | -4.6213E-06 | 2.0460E-06 | -1.3371E-06 | 6.9649E-07 | -1.0371E-07 |
| S3 | 2.4396E-02 | -8.1156E-03 | -8.5765E-03 | -1.5957E-03 | -2.3397E-03 | 3.7973E-04 | -4.9568E-04 | -8.7238E-05 | -6.1790E-05 |
| S4 | -7.9080E-02 | -6.2525E-03 | 1.1018E-03 | 1.1417E-04 | -8.9730E-04 | 2.6483E-04 | -6.4923E-05 | 2.4300E-05 | -2.2355E-06 |
| S5 | 4.4227E-02 | -2.0896E-02 | 4.2496E-03 | -8.8575E-04 | 5.8906E-05 | -1.5914E-05 | -4.5694E-06 | -7.7379E-07 | 9.4159E-07 |
| S6 | 2.8500E-02 | -1.5721E-02 | 3.1507E-03 | -3.5109E-03 | 1.3641E-03 | -3.7615E-04 | 1.2913E-07 | -1.6219E-05 | 1.6460E-05 |
| S7 | 1.5405E-02 | 6.4139E-03 | 2.8024E-03 | -4.7437E-05 | -7.9948E-05 | 1.8974E-04 | -7.8915E-05 | -5.3760E-05 | 2.2081E-05 |
| S8 | 1.1576E-01 | -1.5362E-02 | -3.6884E-03 | 2.6062E-03 | -8.9145E-04 | 2.8062E-04 | -2.5306E-05 | -3.4452E-05 | 1.1307E-05 |
| S9 | -2.4419E-02 | -1.6179E-02 | -3.8525E-03 | 5.8158E-04 | -1.2964E-04 | -4.0984E-07 | 2.8939E-05 | -1.0814E-05 | 1.5188E-06 |
| S10 | -1.2972E-01 | -3.2880E-02 | -8.3558E-03 | -6.6485E-03 | -2.0959E-03 | -7.3608E-04 | -3.1518E-06 | 4.2213E-06 | -6.3665E-05 |
| S11 | -6.2131E-02 | -5.2095E-03 | 1.3122E-03 | -3.8764E-04 | 1.1786E-04 | -1.1222E-05 | -2.9578E-05 | 9.5494E-06 | -1.2133E-06 |
TABLE 2
Fig. 2A shows an astigmatism curve of the optical imaging lens of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 2B shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 2A to 2B, the optical imaging lens provided in embodiment 1 can achieve good imaging quality.
Example 2
An optical imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4B. In this embodiment and the following embodiments, descriptions of portions similar to embodiment 1 will be omitted for brevity. Fig. 3 shows a schematic configuration of an optical imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side: a prism E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S14.
The prism E1 has positive optical power and has an incident surface S1, a reflecting surface S2 and an exit surface S3, wherein the incident surface S1 is a convex surface, the reflecting surface S2 is a plane, and the exit surface S3 is a convex surface. Light incident through the incident surface S1 in the direction of the Y optical axis is reflected by the reflecting surface S2 and then emitted through the emitting surface S3 in the direction of the X optical axis, wherein the Y optical axis is substantially perpendicular to the X optical axis and the reflecting surface S2 passes through the intersection point of the Y optical axis and the X optical axis.
The second lens element E2 has negative refractive power, wherein an object-side surface S4 thereof is concave, and an image-side surface S5 thereof is convex. The third lens element E3 has negative refractive power, wherein an object-side surface S6 thereof is convex, and an image-side surface S7 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S8 thereof is convex, and an image-side surface S9 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S10 thereof is concave, and an image-side surface S11 thereof is concave. The filter E6 has an object side surface S12 and an image side surface S13. Light from the object sequentially passes through the respective surfaces S1 to S13 and is finally imaged on the imaging surface S14.
In this embodiment, the optical imaging lens may further provide a diaphragm (not shown) between the prism E1 and the second lens E2 to further improve the imaging quality of the lens.
Table 3 shows the basic parameter table of the optical imaging lens of embodiment 2, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm). Table 4 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 2, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 3 Table 3
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -3.2514E-02 | -9.6251E-04 | -2.0891E-05 | 2.1213E-06 | -5.3678E-06 | 3.4468E-06 | -1.7117E-06 | 4.3323E-07 | -2.4937E-08 |
| S3 | 4.0399E-02 | -7.7207E-03 | -1.1278E-02 | 2.3803E-04 | -2.6195E-03 | 5.5871E-04 | -5.6750E-04 | -6.2624E-05 | -6.3665E-05 |
| S4 | 4.0399E-02 | -7.7207E-03 | -1.1278E-02 | 2.3803E-04 | -2.6195E-03 | 5.5871E-04 | -5.6750E-04 | -6.2624E-05 | -6.3665E-05 |
| S5 | 4.2913E-02 | -2.1269E-02 | 4.6296E-03 | -9.5456E-04 | 9.6431E-05 | -8.0056E-06 | -3.8128E-06 | -2.0348E-06 | 8.2522E-07 |
| S6 | 2.0699E-02 | -1.7527E-02 | 3.5510E-03 | -3.4917E-03 | 1.3874E-03 | -3.8384E-04 | 9.5946E-06 | -2.5706E-05 | 1.0904E-05 |
| S7 | 2.2585E-02 | 8.0852E-03 | 2.6033E-03 | -1.1573E-05 | -1.2007E-04 | 1.8350E-04 | -8.6329E-05 | -5.4844E-05 | 1.8824E-05 |
| S8 | 1.1673E-01 | -1.5172E-02 | -3.6394E-03 | 2.5422E-03 | -8.8228E-04 | 2.7407E-04 | -2.7071E-05 | -3.9639E-05 | 1.1074E-05 |
| S9 | -2.5544E-02 | -1.5396E-02 | -3.6487E-03 | 5.8229E-04 | -1.2201E-04 | 2.2679E-06 | 2.5103E-05 | -1.0528E-05 | 1.4133E-06 |
| S10 | -1.1135E-01 | -3.0756E-02 | -8.3573E-03 | -6.1774E-03 | -1.7217E-03 | -9.8647E-04 | -4.6895E-04 | -3.4448E-04 | -1.4410E-04 |
| S11 | -6.0768E-02 | -4.0058E-03 | 1.2798E-03 | -3.9595E-04 | 1.0520E-04 | -2.9357E-05 | -1.9270E-05 | 1.1575E-05 | -1.8626E-06 |
TABLE 4 Table 4
Fig. 4A shows an astigmatism curve of the optical imaging lens of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 4B shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 4A to 4B, the optical imaging lens provided in embodiment 2 can achieve good imaging quality.
Example 3
An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6B. Fig. 5 shows a schematic configuration diagram of an optical imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side: a prism E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S14.
The prism E1 has positive optical power and has an incident surface S1, a reflecting surface S2 and an exit surface S3, wherein the incident surface S1 is a convex surface, the reflecting surface S2 is a plane, and the exit surface S3 is a convex surface. Light incident through the incident surface S1 in the direction of the Y optical axis is reflected by the reflecting surface S2 and then emitted through the emitting surface S3 in the direction of the X optical axis, wherein the Y optical axis is substantially perpendicular to the X optical axis and the reflecting surface S2 passes through the intersection point of the Y optical axis and the X optical axis.
The second lens element E2 has negative refractive power, wherein an object-side surface S4 thereof is concave, and an image-side surface S5 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S6 thereof is convex, and an image-side surface S7 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S8 thereof is convex, and an image-side surface S9 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S10 thereof is concave, and an image-side surface S11 thereof is concave. The filter E6 has an object side surface S12 and an image side surface S13. Light from the object sequentially passes through the respective surfaces S1 to S13 and is finally imaged on the imaging surface S14.
In this embodiment, the optical imaging lens may further provide a diaphragm (not shown) between the prism E1 and the second lens E2 to further improve the imaging quality of the lens.
Table 5 shows the basic parameter table of the optical imaging lens of embodiment 3, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm). Table 6 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 3, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 5
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -2.9638E-02 | -1.1226E-03 | -3.8344E-05 | 5.4094E-06 | -7.6211E-06 | 4.0168E-06 | -2.2973E-06 | 1.1570E-06 | -2.2160E-07 |
| S3 | 4.6270E-02 | -6.9416E-03 | -1.2618E-02 | 2.4347E-04 | -2.7940E-03 | 5.5386E-04 | -2.3324E-04 | 9.3054E-05 | 7.9179E-06 |
| S4 | -7.4919E-02 | -3.6324E-03 | -2.7421E-04 | 5.3198E-04 | -7.2683E-04 | 1.8478E-04 | -6.1914E-05 | 6.2313E-06 | 3.5939E-06 |
| S5 | 4.2732E-02 | -2.0839E-02 | 4.8099E-03 | -1.0560E-03 | 1.9831E-04 | -4.3818E-05 | 6.2052E-06 | -4.9824E-06 | 1.2848E-06 |
| S6 | 1.9928E-02 | -1.7895E-02 | 3.4524E-03 | -3.0468E-03 | 1.1449E-03 | -3.0619E-04 | -9.6611E-06 | -2.4004E-05 | 1.2807E-05 |
| S7 | 2.3966E-02 | 7.9163E-03 | 2.8275E-03 | -3.5264E-05 | -1.8003E-04 | 1.9007E-04 | -7.9198E-05 | -5.3109E-05 | 1.9109E-05 |
| S8 | 1.1720E-01 | -1.4705E-02 | -3.6456E-03 | 2.4297E-03 | -8.2636E-04 | 2.6165E-04 | -2.9570E-05 | -4.0055E-05 | 1.1564E-05 |
| S9 | -2.5805E-02 | -1.5245E-02 | -3.6954E-03 | 6.3246E-04 | -1.3289E-04 | 1.1961E-05 | 2.2173E-05 | -1.0493E-05 | 1.3033E-06 |
| S10 | -9.2853E-02 | -2.9586E-02 | -5.6185E-03 | -4.9555E-03 | -2.7760E-03 | -2.2700E-03 | -1.5915E-03 | -8.9899E-04 | -3.0736E-04 |
| S11 | -5.7267E-02 | -3.8154E-03 | 8.5315E-04 | -1.8296E-04 | 3.1812E-05 | -1.8579E-05 | -2.9900E-05 | 2.1204E-05 | -3.5692E-06 |
TABLE 6
Fig. 6A shows an astigmatism curve of the optical imaging lens of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 6B shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 6A to 6B, the optical imaging lens provided in embodiment 3 can achieve good imaging quality.
Example 4
An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8B. Fig. 7 shows a schematic configuration diagram of an optical imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side: a prism E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S14.
The prism E1 has positive optical power and has an incident surface S1, a reflecting surface S2 and an exit surface S3, wherein the incident surface S1 is a convex surface, the reflecting surface S2 is a plane, and the exit surface S3 is a convex surface. Light incident through the incident surface S1 in the direction of the Y optical axis is reflected by the reflecting surface S2 and then emitted through the emitting surface S3 in the direction of the X optical axis, wherein the Y optical axis is substantially perpendicular to the X optical axis and the reflecting surface S2 passes through the intersection point of the Y optical axis and the X optical axis.
The second lens element E2 has negative refractive power, wherein an object-side surface S4 thereof is concave, and an image-side surface S5 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S6 thereof is convex, and an image-side surface S7 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S8 thereof is convex, and an image-side surface S9 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S10 thereof is concave, and an image-side surface S11 thereof is concave. The filter E6 has an object side surface S12 and an image side surface S13. Light from the object sequentially passes through the respective surfaces S1 to S13 and is finally imaged on the imaging surface S14.
In this embodiment, the optical imaging lens may further provide a diaphragm (not shown) between the prism E1 and the second lens E2 to further improve the imaging quality of the lens.
Table 7 shows a basic parameter table of the optical imaging lens of example 4, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm). Table 8 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 4, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 7
TABLE 8
Fig. 8A shows an astigmatism curve of the optical imaging lens of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 8B shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 8A to 8B, the optical imaging lens provided in embodiment 4 can achieve good imaging quality.
Example 5
An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10B. Fig. 9 shows a schematic configuration of an optical imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side: a prism E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S14.
The prism E1 has positive optical power and has an incident surface S1, a reflecting surface S2 and an exit surface S3, wherein the incident surface S1 is a convex surface, the reflecting surface S2 is a plane, and the exit surface S3 is a convex surface. Light incident through the incident surface S1 in the direction of the Y optical axis is reflected by the reflecting surface S2 and then emitted through the emitting surface S3 in the direction of the X optical axis, wherein the Y optical axis is substantially perpendicular to the X optical axis and the reflecting surface S2 passes through the intersection point of the Y optical axis and the X optical axis.
The second lens element E2 has negative refractive power, wherein an object-side surface S4 thereof is concave, and an image-side surface S5 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S6 thereof is convex, and an image-side surface S7 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S8 thereof is concave, and an image-side surface S9 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S10 thereof is concave and an image-side surface S11 thereof is convex. The filter E6 has an object side surface S12 and an image side surface S13. Light from the object sequentially passes through the respective surfaces S1 to S13 and is finally imaged on the imaging surface S14.
In this embodiment, the optical imaging lens may further provide a diaphragm (not shown) between the prism E1 and the second lens E2 to further improve the imaging quality of the lens.
Table 9 shows a basic parameter table of the optical imaging lens of embodiment 5, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm). Table 10 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 5, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 9
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -2.1504E-02 | -1.2195E-03 | -1.0691E-04 | 1.9963E-05 | -1.0854E-05 | 8.4095E-06 | 8.1058E-07 | 6.9057E-06 | 1.1221E-06 |
| S3 | 4.8980E-02 | -9.3914E-03 | -8.7962E-03 | -5.1522E-03 | 6.4898E-04 | -1.2787E-03 | 3.4243E-04 | -5.0602E-04 | -1.6290E-04 |
| S4 | -7.0891E-02 | 9.9571E-03 | 1.8103E-04 | -4.3483E-03 | 1.6306E-03 | -9.4854E-04 | 3.3571E-04 | 2.5335E-05 | 2.1056E-05 |
| S5 | 4.3372E-02 | 8.0687E-03 | 2.0019E-04 | -3.9871E-03 | 8.6665E-04 | -2.9608E-04 | 3.2481E-04 | 3.7630E-05 | 3.9546E-05 |
| S6 | 3.7122E-02 | -9.8368E-03 | 5.1635E-03 | -1.3431E-04 | -1.5919E-04 | -7.6477E-05 | 1.3122E-05 | 2.6202E-05 | 1.8735E-05 |
| S7 | 1.7441E-02 | 8.5306E-04 | 2.0539E-03 | -2.0232E-04 | -4.0789E-04 | 4.9885E-04 | 2.6087E-05 | -1.8538E-06 | -2.7591E-05 |
| S8 | 1.1848E-01 | -7.3170E-03 | -2.6178E-03 | 1.1340E-03 | -2.7542E-04 | 2.8125E-04 | -2.7452E-05 | -2.6253E-05 | -2.9871E-05 |
| S9 | -1.1970E-02 | -1.8209E-02 | -2.2522E-03 | 9.3351E-04 | 2.7379E-04 | 2.1545E-05 | -2.0749E-05 | -1.7856E-05 | -8.7309E-06 |
| S10 | -1.2349E-01 | -7.7838E-02 | 5.2595E-03 | 3.3863E-04 | -3.4433E-03 | -2.2312E-03 | -5.6791E-04 | -1.7817E-04 | -1.1119E-04 |
| S11 | -1.7318E-02 | -1.6181E-02 | 1.5165E-03 | 1.1831E-04 | 7.9415E-05 | -1.4685E-05 | -4.0320E-05 | 1.8631E-05 | 1.2303E-07 |
Table 10
Fig. 10A shows an astigmatism curve of the optical imaging lens of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10B shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 10A to 10B, the optical imaging lens provided in embodiment 5 can achieve good imaging quality.
Example 6
An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12B. Fig. 11 shows a schematic structural diagram of an optical imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side: a prism E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S14.
The prism E1 has positive optical power and has an incident surface S1, a reflecting surface S2 and an exit surface S3, wherein the incident surface S1 is a convex surface, the reflecting surface S2 is a plane, and the exit surface S3 is a convex surface. Light incident through the incident surface S1 in the direction of the Y optical axis is reflected by the reflecting surface S2 and then emitted through the emitting surface S3 in the direction of the X optical axis, wherein the Y optical axis is substantially perpendicular to the X optical axis and the reflecting surface S2 passes through the intersection point of the Y optical axis and the X optical axis.
The second lens element E2 has negative refractive power, wherein an object-side surface S4 thereof is concave, and an image-side surface S5 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S6 thereof is convex, and an image-side surface S7 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S8 thereof is concave, and an image-side surface S9 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S10 thereof is concave and an image-side surface S11 thereof is convex. The filter E6 has an object side surface S12 and an image side surface S13. Light from the object sequentially passes through the respective surfaces S1 to S13 and is finally imaged on the imaging surface S14.
In this embodiment, the optical imaging lens may further provide a diaphragm (not shown) between the prism E1 and the second lens E2 to further improve the imaging quality of the lens.
Table 11 shows a basic parameter table of the optical imaging lens of embodiment 6, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm). Table 12 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 6, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 11
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -2.0527E-02 | -1.1966E-03 | -9.3555E-05 | 4.8721E-06 | -3.8771E-06 | 4.4476E-06 | 8.8433E-07 | 4.0179E-06 | -1.5771E-07 |
| S3 | 5.3921E-02 | -9.5665E-03 | -1.1037E-02 | -4.3608E-03 | 1.0574E-03 | -1.4278E-03 | -2.5861E-04 | -1.1213E-04 | -4.0843E-05 |
| S4 | -6.8795E-02 | 1.4731E-02 | -2.3546E-03 | -4.8022E-03 | 1.8536E-03 | 1.9841E-04 | 5.2134E-04 | 1.8080E-04 | 6.7192E-05 |
| S5 | 3.9837E-02 | 1.8317E-02 | -2.4081E-03 | -4.3114E-03 | 4.7175E-04 | -1.4965E-04 | 4.0019E-04 | 1.3082E-04 | 7.7104E-05 |
| S6 | 5.4256E-02 | -6.7872E-03 | 2.1706E-03 | 4.7448E-04 | -5.5545E-05 | -1.9458E-05 | 6.2854E-08 | 1.3414E-06 | 3.5747E-07 |
| S7 | 1.3963E-02 | 3.4308E-04 | -1.1643E-04 | 1.1845E-03 | -5.1810E-04 | 4.2844E-04 | -2.7302E-05 | 6.5082E-05 | -1.6344E-05 |
| S8 | 1.2320E-01 | -5.9494E-03 | -2.2375E-03 | 6.3424E-04 | -3.4289E-04 | 2.5854E-04 | -7.0029E-05 | 4.1102E-05 | -5.6421E-06 |
| S9 | -1.0759E-02 | -2.1527E-02 | -1.3777E-03 | -1.3130E-05 | 3.1041E-04 | 7.2233E-05 | 6.2619E-06 | -2.3273E-06 | -1.1509E-06 |
| S10 | -1.7793E-01 | -9.3907E-02 | -1.1044E-02 | -5.3437E-04 | 9.3113E-04 | -4.7641E-05 | -3.2747E-04 | -1.4287E-04 | 2.2791E-06 |
| S11 | -3.8103E-02 | -1.2262E-02 | -2.7929E-04 | -9.4349E-05 | -6.3106E-05 | -3.3092E-06 | -6.0790E-06 | 6.1374E-06 | -9.9063E-07 |
Table 12
Fig. 12A shows an astigmatism curve of the optical imaging lens of embodiment 6, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 12B shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 12A to 12B, the optical imaging lens provided in embodiment 6 can achieve good imaging quality.
Example 7
An optical imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14B. Fig. 13 shows a schematic configuration diagram of an optical imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side: a prism E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S14.
The prism E1 has positive optical power and has an incident surface S1, a reflecting surface S2 and an exit surface S3, wherein the incident surface S1 is a convex surface, the reflecting surface S2 is a plane, and the exit surface S3 is a concave surface. Light incident through the incident surface S1 in the direction of the Y optical axis is reflected by the reflecting surface S2 and then emitted through the emitting surface S3 in the direction of the X optical axis, wherein the Y optical axis is substantially perpendicular to the X optical axis and the reflecting surface S2 passes through the intersection point of the Y optical axis and the X optical axis.
The second lens element E2 has negative refractive power, wherein an object-side surface S4 thereof is convex, and an image-side surface S5 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S6 thereof is convex, and an image-side surface S7 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S8 thereof is concave, and an image-side surface S9 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S10 thereof is concave and an image-side surface S11 thereof is convex. The filter E6 has an object side surface S12 and an image side surface S13. Light from the object sequentially passes through the respective surfaces S1 to S13 and is finally imaged on the imaging surface S14.
In this embodiment, the optical imaging lens may further provide a diaphragm (not shown) between the prism E1 and the second lens E2 to further improve the imaging quality of the lens.
Table 13 shows a basic parameter table of the optical imaging lens of embodiment 7, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm). Table 14 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 7, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 13
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -2.1145E-02 | -6.5684E-04 | -3.7682E-05 | 1.4797E-05 | -8.6020E-06 | 4.6254E-06 | -2.6118E-06 | 7.0845E-07 | -6.9731E-07 |
| S3 | 8.7904E-02 | -1.8263E-02 | -1.4840E-02 | -2.3971E-03 | 1.8839E-03 | -1.6712E-03 | -1.0593E-03 | 1.3088E-04 | 7.9110E-05 |
| S4 | -7.8124E-02 | 1.3278E-02 | -5.0561E-04 | -4.3823E-03 | 1.5078E-03 | 8.6472E-04 | -1.3520E-04 | -5.1017E-05 | -1.6458E-05 |
| S5 | 4.6399E-02 | 1.1411E-02 | -5.8017E-04 | -4.1413E-03 | 7.1823E-04 | 6.6955E-05 | -4.5615E-04 | -1.3239E-04 | -2.0581E-05 |
| S6 | 6.4632E-02 | -2.8499E-03 | 6.9667E-04 | 8.0268E-04 | 6.9174E-05 | -1.8098E-05 | -3.9991E-05 | -2.3682E-05 | -1.3931E-05 |
| S7 | 7.5375E-04 | 1.8069E-03 | 2.5653E-04 | 1.8689E-03 | -6.0532E-04 | 5.7388E-04 | -3.5878E-05 | 1.0806E-04 | -6.2793E-05 |
| S8 | 1.3432E-01 | -5.3983E-03 | -1.6205E-03 | 4.0163E-04 | -2.9860E-04 | 2.7307E-04 | -5.1301E-05 | 6.9262E-05 | 3.8919E-06 |
| S9 | -3.6919E-02 | -1.7837E-02 | -7.9731E-04 | 3.0299E-04 | 6.1792E-04 | 1.8598E-04 | 2.6067E-05 | -1.0112E-05 | -2.6819E-06 |
| S10 | -2.1945E-01 | -1.0274E-01 | -1.8296E-02 | -7.3745E-04 | 2.0529E-03 | 6.6134E-04 | -5.8197E-05 | -1.0093E-04 | -7.8590E-06 |
| S11 | -1.5014E-02 | -8.2947E-03 | -5.2720E-04 | -1.9900E-04 | -7.3838E-05 | -1.0318E-05 | -9.0639E-06 | 5.5861E-06 | -9.6824E-07 |
TABLE 14
Fig. 14A shows an astigmatism curve of the optical imaging lens of embodiment 7, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 14B shows a distortion curve of the optical imaging lens of embodiment 7, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 14A to 14B, the optical imaging lens provided in embodiment 7 can achieve good imaging quality.
Example 8
An optical imaging lens according to embodiment 8 of the present application is described below with reference to fig. 15 to 16B. Fig. 15 shows a schematic structural diagram of an optical imaging lens according to embodiment 8 of the present application.
As shown in fig. 15, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side: a prism E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S14.
The prism E1 has positive optical power and has an incident surface S1, a reflecting surface S2 and an exit surface S3, wherein the incident surface S1 is a convex surface, the reflecting surface S2 is a plane, and the exit surface S3 is a concave surface. Light incident through the incident surface S1 in the direction of the Y optical axis is reflected by the reflecting surface S2 and then emitted through the emitting surface S3 in the direction of the X optical axis, wherein the Y optical axis is substantially perpendicular to the X optical axis and the reflecting surface S2 passes through the intersection point of the Y optical axis and the X optical axis.
The second lens element E2 has positive refractive power, wherein an object-side surface S4 thereof is convex, and an image-side surface S5 thereof is convex. The third lens element E3 has positive refractive power, wherein an object-side surface S6 thereof is convex, and an image-side surface S7 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S8 thereof is concave, and an image-side surface S9 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S10 thereof is concave and an image-side surface S11 thereof is convex. The filter E6 has an object side surface S12 and an image side surface S13. Light from the object sequentially passes through the respective surfaces S1 to S13 and is finally imaged on the imaging surface S14.
In this embodiment, the optical imaging lens may further provide a diaphragm (not shown) between the prism E1 and the second lens E2 to further improve the imaging quality of the lens.
Table 15 shows a basic parameter table of the optical imaging lens of example 8, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm). Table 16 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 8, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 15
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -2.3347E-02 | -5.1046E-04 | -1.3322E-06 | 4.4860E-06 | -2.5313E-06 | 6.6186E-07 | -7.0678E-07 | 5.2941E-07 | -1.5141E-08 |
| S3 | 1.1413E-01 | -3.7716E-02 | -8.9969E-03 | -1.8167E-03 | -7.2975E-04 | -4.5799E-04 | -4.4996E-04 | -2.4273E-04 | -5.6190E-05 |
| S4 | -8.0914E-02 | 5.7088E-03 | -1.3488E-04 | -9.8380E-04 | -9.8588E-04 | 1.3135E-03 | 8.9328E-04 | 1.9709E-04 | -2.0283E-05 |
| S5 | 4.6928E-02 | 2.0247E-02 | -3.9480E-04 | -6.6537E-03 | -1.4987E-03 | 2.2209E-03 | 9.5025E-04 | -8.9809E-05 | -1.6032E-04 |
| S6 | 8.1165E-02 | -5.3246E-03 | 4.1678E-03 | -4.8082E-05 | -1.9976E-04 | -1.2532E-04 | -4.4290E-05 | 2.3392E-05 | -1.7802E-06 |
| S7 | -5.2600E-03 | -4.1797E-05 | 7.2996E-03 | -1.5992E-03 | -5.2948E-04 | 1.1251E-04 | 1.6313E-03 | -3.8991E-04 | -1.7013E-04 |
| S8 | 1.3053E-01 | 5.5177E-03 | 1.7483E-03 | 3.9967E-04 | -1.2763E-04 | -1.5648E-03 | 2.6135E-04 | -1.3348E-04 | -6.5199E-05 |
| S9 | -2.1466E-02 | -1.7218E-02 | -1.8148E-03 | 1.5383E-03 | 6.3114E-04 | 4.2231E-04 | 1.5877E-04 | -1.3549E-05 | -1.5392E-05 |
| S10 | -2.8052E-01 | -1.1027E-01 | -2.1724E-02 | 4.4239E-03 | 6.0516E-03 | 3.1340E-03 | 1.1378E-03 | 3.0078E-04 | 4.5631E-05 |
| S11 | -1.8027E-02 | -2.6909E-03 | -1.1979E-03 | -3.0426E-04 | -8.8014E-05 | -1.3575E-05 | -6.2548E-06 | -9.9931E-07 | -9.9398E-07 |
Table 16
Fig. 16A shows an astigmatism curve of the optical imaging lens of embodiment 8, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 16B shows a distortion curve of the optical imaging lens of embodiment 8, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 16A to 16B, the optical imaging lens provided in embodiment 8 can achieve good imaging quality.
Example 9
An optical imaging lens according to embodiment 9 of the present application is described below with reference to fig. 17 to 18B. Fig. 17 shows a schematic configuration diagram of an optical imaging lens according to embodiment 9 of the present application.
As shown in fig. 17, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side: a prism E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S14.
The prism E1 has negative focal power and has an incident surface S1, a reflecting surface S2 and an exit surface S3, wherein the incident surface S1 is a convex surface, the reflecting surface S2 is a plane, and the exit surface S3 is a concave surface. Light incident through the incident surface S1 in the direction of the Y optical axis is reflected by the reflecting surface S2 and then emitted through the emitting surface S3 in the direction of the X optical axis, wherein the Y optical axis is substantially perpendicular to the X optical axis and the reflecting surface S2 passes through the intersection point of the Y optical axis and the X optical axis.
The second lens element E2 has positive refractive power, wherein an object-side surface S4 thereof is convex, and an image-side surface S5 thereof is convex. The third lens element E3 has positive refractive power, wherein an object-side surface S6 thereof is convex, and an image-side surface S7 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S8 thereof is concave, and an image-side surface S9 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S10 thereof is concave and an image-side surface S11 thereof is convex. The filter E6 has an object side surface S12 and an image side surface S13. Light from the object sequentially passes through the respective surfaces S1 to S13 and is finally imaged on the imaging surface S14.
In this embodiment, the optical imaging lens may further provide a diaphragm (not shown) between the prism E1 and the second lens E2 to further improve the imaging quality of the lens.
Table 17 shows a basic parameter table of the optical imaging lens of embodiment 9, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm). Table 18 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 9, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 17
TABLE 18
Fig. 18A shows an astigmatism curve of the optical imaging lens of embodiment 9, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 18B shows a distortion curve of the optical imaging lens of embodiment 9, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 18A to 18B, the optical imaging lens provided in embodiment 9 can achieve good imaging quality.
Example 10
An optical imaging lens according to embodiment 10 of the present application is described below with reference to fig. 19 to 20B. Fig. 19 shows a schematic structural diagram of an optical imaging lens according to embodiment 10 of the present application.
As shown in fig. 19, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side: a prism E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S14.
The prism E1 has negative focal power and has an incident surface S1, a reflecting surface S2 and an exit surface S3, wherein the incident surface S1 is a convex surface, the reflecting surface S2 is a plane, and the exit surface S3 is a concave surface. Light incident through the incident surface S1 in the direction of the Y optical axis is reflected by the reflecting surface S2 and then emitted through the emitting surface S3 in the direction of the X optical axis, wherein the Y optical axis is substantially perpendicular to the X optical axis and the reflecting surface S2 passes through the intersection point of the Y optical axis and the X optical axis.
The second lens element E2 has positive refractive power, wherein an object-side surface S4 thereof is convex, and an image-side surface S5 thereof is convex. The third lens element E3 has positive refractive power, wherein an object-side surface S6 thereof is concave, and an image-side surface S7 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S8 thereof is concave, and an image-side surface S9 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S10 thereof is concave and an image-side surface S11 thereof is convex. The filter E6 has an object side surface S12 and an image side surface S13. Light from the object sequentially passes through the respective surfaces S1 to S13 and is finally imaged on the imaging surface S14.
In this embodiment, the optical imaging lens may further provide a diaphragm (not shown) between the prism E1 and the second lens E2 to further improve the imaging quality of the lens.
Table 19 shows a basic parameter table of the optical imaging lens of embodiment 10, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm). Table 20 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 10, where each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 19
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -1.6118E-02 | -2.1082E-03 | 1.7707E-05 | 1.7524E-04 | 1.1673E-04 | 9.1859E-05 | 4.1068E-05 | 1.8769E-05 | 1.0907E-06 |
| S3 | 1.9927E-01 | -5.1119E-02 | -1.6906E-02 | 6.5871E-03 | 4.8097E-04 | -3.5472E-03 | -2.0029E-03 | 2.0448E-05 | 1.9860E-04 |
| S4 | -7.7436E-02 | 2.9660E-02 | -5.3857E-03 | -6.3145E-03 | -1.9541E-03 | 3.7157E-03 | 3.3313E-03 | 1.4630E-03 | 3.7840E-04 |
| S5 | 8.3304E-02 | -1.0468E-02 | 2.0897E-02 | -8.5642E-03 | -9.9490E-03 | 1.3207E-02 | -8.2544E-03 | 1.5665E-03 | 6.0877E-04 |
| S6 | 1.2803E-01 | 8.3508E-03 | -2.7917E-02 | 1.0456E-02 | -5.6437E-04 | 3.3177E-04 | -1.1786E-04 | 4.8325E-04 | 2.6247E-05 |
| S7 | -8.6516E-02 | 1.9085E-02 | 3.6806E-03 | -4.2025E-03 | 7.6809E-03 | -8.6779E-04 | 1.3547E-03 | 7.9139E-04 | 2.5317E-04 |
| S8 | 2.1025E-01 | -2.4239E-02 | 1.4093E-02 | -9.1917E-03 | 1.4257E-03 | -3.1944E-03 | 2.1070E-03 | 8.4240E-04 | 2.5812E-04 |
| S9 | 8.6611E-02 | -6.8092E-02 | 5.6592E-03 | -5.5178E-04 | -8.3464E-04 | -1.0567E-03 | -6.1582E-04 | -2.7252E-04 | -7.2174E-05 |
| S10 | -5.0689E-01 | -2.0627E-01 | -1.3629E-02 | 1.2651E-02 | 4.1483E-03 | 3.2551E-04 | 1.7447E-04 | 1.8291E-04 | 7.4411E-05 |
| S11 | -4.8652E-02 | -1.9523E-02 | -4.7231E-03 | -7.1108E-04 | -1.1914E-04 | 2.7962E-06 | -7.5463E-06 | 7.3329E-06 | -2.6365E-06 |
Table 20
Fig. 20A shows an astigmatism curve of the optical imaging lens of embodiment 10, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 20B shows a distortion curve of the optical imaging lens of embodiment 10, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 20A to 20B, the optical imaging lens provided in embodiment 10 can achieve good imaging quality.
Example 11
An optical imaging lens according to embodiment 11 of the present application is described below with reference to fig. 21 to 22B. Fig. 21 shows a schematic configuration diagram of an optical imaging lens according to embodiment 11 of the present application.
As shown in fig. 21, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side: a prism E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S14.
The prism E1 has positive optical power and has an incident surface S1, a reflecting surface S2 and an exit surface S3, wherein the incident surface S1 is a convex surface, the reflecting surface S2 is a plane, and the exit surface S3 is a convex surface. Light incident through the incident surface S1 in the direction of the Y optical axis is reflected by the reflecting surface S2 and then emitted through the emitting surface S3 in the direction of the X optical axis, wherein the Y optical axis is substantially perpendicular to the X optical axis and the reflecting surface S2 passes through the intersection point of the Y optical axis and the X optical axis.
The second lens element E2 has negative refractive power, wherein an object-side surface S4 thereof is concave, and an image-side surface S5 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S6 thereof is convex, and an image-side surface S7 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S8 thereof is concave, and an image-side surface S9 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S10 thereof is convex and an image-side surface S11 thereof is concave. The filter E6 has an object side surface S12 and an image side surface S13. Light from the object sequentially passes through the respective surfaces S1 to S13 and is finally imaged on the imaging surface S14.
In this embodiment, the optical imaging lens may further provide a diaphragm (not shown) between the prism E1 and the second lens E2 to further improve the imaging quality of the lens.
Table 21 shows a basic parameter table of the optical imaging lens of embodiment 11, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm). Table 22 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 11, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Table 21
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -2.2846E-02 | -8.3034E-04 | -3.7088E-05 | 8.1841E-07 | -7.0881E-07 | 8.8257E-07 | 1.8152E-07 | 1.3189E-06 | 5.0495E-07 |
| S3 | 5.5030E-02 | -1.1932E-02 | -9.9309E-03 | -3.8665E-03 | 8.0271E-04 | -1.6828E-03 | -2.8164E-04 | -2.4536E-04 | 9.6375E-05 |
| S4 | -7.0180E-02 | 1.9432E-02 | -4.7491E-03 | -3.0016E-03 | 1.0813E-03 | -6.8683E-06 | 5.4848E-04 | 9.0239E-05 | 7.4484E-05 |
| S5 | 3.9234E-02 | 2.4465E-02 | -6.7906E-03 | -2.5096E-03 | -8.1744E-05 | 3.0732E-04 | 6.7346E-04 | 2.4322E-04 | 1.2231E-04 |
| S6 | 7.0892E-02 | -3.4189E-03 | 4.2436E-04 | 1.7255E-05 | 2.6847E-05 | -1.3391E-06 | 1.0304E-06 | 3.8348E-07 | 7.5729E-07 |
| S7 | 1.2561E-02 | -8.8087E-04 | -8.6220E-04 | 1.3575E-03 | -2.0203E-04 | 3.3198E-04 | -5.2626E-05 | 4.9974E-05 | -1.5802E-05 |
| S8 | 1.2626E-01 | -3.3710E-03 | -1.2049E-03 | 7.3092E-04 | -3.8060E-04 | 2.5251E-04 | -7.4210E-05 | 3.6552E-05 | -7.6897E-06 |
| S9 | -1.4860E-02 | -1.7354E-02 | 2.4576E-04 | -3.5580E-04 | -7.5584E-06 | 3.2267E-05 | 6.2316E-06 | 2.3118E-06 | 6.3143E-07 |
| S10 | -1.3506E-01 | -8.8888E-02 | -1.3418E-03 | -2.5426E-04 | 5.4248E-04 | 8.1936E-05 | -1.6193E-04 | -7.2930E-05 | -1.1156E-05 |
| S11 | -3.0742E-02 | -1.3565E-02 | 5.6491E-04 | -1.9087E-04 | -7.0414E-05 | 8.2192E-06 | -3.1477E-06 | 3.7779E-07 | -2.1773E-06 |
Table 22
Fig. 22A shows an astigmatism curve of the optical imaging lens of embodiment 11, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 22B shows a distortion curve of the optical imaging lens of embodiment 11, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 22A to 22B, the optical imaging lens provided in embodiment 11 can achieve good imaging quality.
Example 12
An optical imaging lens according to embodiment 12 of the present application is described below with reference to fig. 23 to 24B. Fig. 23 shows a schematic configuration diagram of an optical imaging lens according to embodiment 12 of the present application.
As shown in fig. 23, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side: a prism E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S14.
The prism E1 has positive optical power and has an incident surface S1, a reflecting surface S2 and an exit surface S3, wherein the incident surface S1 is a convex surface, the reflecting surface S2 is a plane, and the exit surface S3 is a convex surface. Light incident through the incident surface S1 in the direction of the Y optical axis is reflected by the reflecting surface S2 and then emitted through the emitting surface S3 in the direction of the X optical axis, wherein the Y optical axis is substantially perpendicular to the X optical axis and the reflecting surface S2 passes through the intersection point of the Y optical axis and the X optical axis.
The second lens element E2 has negative refractive power, wherein an object-side surface S4 thereof is concave, and an image-side surface S5 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S6 thereof is convex, and an image-side surface S7 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S8 thereof is concave and an image-side surface S9 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S10 thereof is concave, and an image-side surface S11 thereof is concave. The filter E6 has an object side surface S12 and an image side surface S13. Light from the object sequentially passes through the respective surfaces S1 to S13 and is finally imaged on the imaging surface S14.
In this embodiment, the optical imaging lens may further provide a diaphragm (not shown) between the prism E1 and the second lens E2 to further improve the imaging quality of the lens.
Table 23 shows a basic parameter table of the optical imaging lens of embodiment 12, in which the units of radius of curvature, thickness, and focal length are all millimeters (mm). Table 24 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 12, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Table 23
| Face number | A4 | A6 | A8 | A10 | A12 | A14 | A16 | A18 | A20 |
| S1 | -2.4988E-02 | -7.6437E-04 | 8.8716E-06 | 4.8581E-05 | 3.4374E-05 | 2.7103E-05 | 1.4730E-05 | 8.0125E-06 | 1.3712E-06 |
| S3 | 5.8648E-02 | -1.0263E-02 | -1.4621E-02 | -1.3873E-03 | 1.4233E-04 | -1.7671E-03 | -2.8878E-04 | -1.0873E-04 | -1.2437E-05 |
| S4 | -6.6835E-02 | 2.1440E-02 | -7.3538E-03 | -1.9183E-03 | 1.0874E-03 | 1.2456E-04 | 3.1237E-04 | 1.0727E-04 | 4.0326E-05 |
| S5 | 3.8919E-02 | 2.2504E-02 | -6.0240E-03 | -1.9920E-03 | -1.3273E-04 | 3.8293E-05 | 4.2241E-04 | 1.8506E-04 | 7.4329E-05 |
| S6 | 6.4764E-02 | -7.0369E-03 | 4.2504E-04 | -2.0745E-07 | 3.1813E-05 | 1.1058E-05 | 5.3736E-06 | 4.8531E-06 | 7.4014E-07 |
| S7 | 2.5214E-02 | -9.4441E-06 | -1.5568E-03 | 1.0367E-03 | -2.8079E-04 | 2.1247E-04 | -1.0069E-04 | 3.6578E-05 | -1.2857E-05 |
| S8 | 1.1162E-01 | -4.7489E-03 | -1.5585E-03 | 7.1404E-04 | -4.8165E-04 | 1.4685E-04 | -1.7647E-04 | 1.7571E-05 | -1.8885E-05 |
| S9 | -9.9039E-04 | -1.7179E-02 | 5.3923E-05 | -2.9620E-04 | -4.3289E-05 | 9.8377E-06 | -3.5556E-06 | -3.5163E-07 | -1.1451E-06 |
| S10 | -1.7621E-01 | -7.2325E-02 | 2.6016E-03 | -3.9537E-03 | 1.8830E-03 | -1.4277E-04 | 6.0049E-05 | -2.3607E-05 | -1.5845E-05 |
| S11 | -6.6925E-02 | -1.0177E-02 | 4.3257E-03 | -1.6711E-03 | 5.7508E-04 | -3.7554E-05 | 4.7047E-05 | 1.4265E-05 | 3.3327E-06 |
Table 24
Fig. 24A shows an astigmatism curve of the optical imaging lens of embodiment 12, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 24B shows a distortion curve of the optical imaging lens of embodiment 12, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 24A to 24B, the optical imaging lens provided in embodiment 12 can achieve good imaging quality.
In summary, examples 1 to 12 each satisfy the relationship shown in table 25.
Table 25
The application also provides an imaging device, wherein the electronic photosensitive element can be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device may be a stand alone imaging device such as a digital camera or an imaging module integrated on a mobile electronic device such as a cell phone. The imaging device is equipped with the optical imaging lens described above.
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.
Claims (10)
1. Optical imaging lens, its characterized in that includes:
a first lens having optical power and having an object side surface, a reflection surface and an image side surface, the object side surface and the image side surface being aspherical mirror surfaces, the reflection surface being a plane mirror surface, the first lens being configured such that light incident on the first lens through the object side surface in a direction of a Y optical axis, which is substantially perpendicular to the X optical axis, is reflected by the reflection surface and then exits through the image side surface in a direction of the X optical axis; the object side surface of the first lens is a convex surface;
The optical imaging lens further includes, in order from the first lens to an image side along the X-optical axis:
a second lens, a third lens, a fourth lens, and a fifth lens having optical power;
the distance G1 between the vertex of the object side surface of the first lens on the Y optical axis and the intersection point of the reflecting surface of the first lens and the Y optical axis on the Y optical axis, the distance G2 between the intersection point of the reflecting surface of the first lens and the X optical axis and the vertex of the image side surface of the first lens on the X optical axis, and the total effective focal length f of the optical imaging lens satisfy 0.3 < (G1+G2)/f < 0.6;
The curvature radius R6 of the image side surface of the third lens and the curvature radius R7 of the object side surface of the fourth lens satisfy R6/R7 which is more than or equal to 0.5 and less than or equal to 1.36;
The total effective focal length f of the optical imaging lens and half of the ImgH of the diagonal length of an effective pixel area on the imaging surface of the optical imaging lens meet the requirement that ImgH/f is less than 0.4; and
The number of lenses of the optical imaging lens having optical power is five.
2. The optical imaging lens of claim 1, wherein a total effective focal length f of the optical imaging lens and an effective focal length f1 of the first lens satisfy |f/f1| < 2.5.
3. The optical imaging lens of claim 1, wherein a total effective focal length f of the optical imaging lens and a combined focal length f34 of the third lens and the fourth lens satisfy-1.0 < f/f34 < 2.5.
4. The optical imaging lens of claim 1, wherein a total effective focal length f of the optical imaging lens and an effective focal length f5 of the fifth lens satisfy-2.0 < f/f5 < 0.5.
5. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the radius of curvature R1 of the object side surface of the first lens satisfy 0.5 < f/R1 < 2.0.
6. The optical imaging lens as claimed in claim 1, wherein a total effective focal length f of the optical imaging lens and a distance BFL between an image side surface of the fifth lens and an imaging surface of the optical imaging lens on the X-axis satisfy BFL/f < 0.5.
7. The optical imaging lens according to claim 1, wherein a radius of curvature R2 of an image side surface of the first lens and a radius of curvature R3 of an object side surface of the second lens satisfy | (R2-R3)/(r2+r3) |0.5.
8. The optical imaging lens as claimed in claim 1, wherein a center thickness CT2 of the second lens element on the X-axis and a distance Dr5r8 from an object side surface of the third lens element to an image side surface of the fourth lens element on the X-axis satisfy CT2/Dr5r8 < 0.5.
9. The optical imaging lens as claimed in claim 1, wherein the refractive index N2 of the second lens and the refractive index N4 of the fourth lens satisfy 1.60 < (n2+n4)/2 < 1.75.
10. The optical imaging lens according to any one of claims 1 to 9, wherein a sum Σat of an air interval T45 on the X-axis between the fourth lens and the fifth lens and an air interval on the X-axis between any adjacent two lenses of the first lens to the fifth lens satisfies 0.3 < T45/Σat+.0.8.
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| TW200923467A (en) * | 2007-11-16 | 2009-06-01 | Newmax Technology Co Ltd | Imaging lens set |
| TWI518363B (en) * | 2014-12-10 | 2016-01-21 | 大立光電股份有限公司 | Optical imaging lens assembly, image capturing unit and electronic device |
| CN107526153A (en) * | 2014-08-26 | 2017-12-29 | 大立光电股份有限公司 | Image capturing optical lens assembly, image capturing device and electronic device |
| CN108398771A (en) * | 2017-02-08 | 2018-08-14 | 大立光电股份有限公司 | Optical image capturing lens system, image capturing device and electronic device |
| CN108663777A (en) * | 2017-03-31 | 2018-10-16 | 大立光电股份有限公司 | Optical image lens system, image capturing device and electronic device |
| CN209525527U (en) * | 2019-03-20 | 2019-10-22 | 浙江舜宇光学有限公司 | Optical imaging lens |
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| TW200923467A (en) * | 2007-11-16 | 2009-06-01 | Newmax Technology Co Ltd | Imaging lens set |
| CN107526153A (en) * | 2014-08-26 | 2017-12-29 | 大立光电股份有限公司 | Image capturing optical lens assembly, image capturing device and electronic device |
| TWI518363B (en) * | 2014-12-10 | 2016-01-21 | 大立光電股份有限公司 | Optical imaging lens assembly, image capturing unit and electronic device |
| CN108398771A (en) * | 2017-02-08 | 2018-08-14 | 大立光电股份有限公司 | Optical image capturing lens system, image capturing device and electronic device |
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