WO2020024635A1 - Optical imaging lens - Google Patents

Abstract

An optical imaging lens, comprising sequentially from an object side to an image side along an optical axis: a first lens (E1), a second lens (E2), a third lens (E3), a fourth lens (E4), a fifth lens (E5), a sixth lens (E6) and a seventh lens (E7). The first lens (E1) has negative focal power, an object side surface (S1) thereof being a convex surface, and an image side surface (S2) thereof being a concave surface. The second lens (E2), the fifth lens (E5) and the sixth lens (E6) each have a focal power. The third lens (E3) and the fourth lens (E4) each have a positive focal power. The seventh lens (E7) has a negative focal power, both the object side surface (S13) and the image side surface (S14) thereof being concave surfaces. The effective focal length f1 of the first lens (E1) and the total effective focal length f of the optical imaging lens meet -3.5<f1/f<-2.

Description

Optical imaging lens

Cross-reference to related applications

This application claims the priority and rights of the Chinese patent application filed with the Chinese National Intellectual Property Office (CNIPA) with a patent application number of 201810872496.X on August 02, 2018, which is incorporated herein by reference in its entirety.

Technical field

The present application relates to an optical imaging lens, and more particularly, the present application relates to an optical imaging lens including seven lenses.

Background technique

In recent years, with the rapid replacement of portable electronic products such as smart phones and tablet computers, the market has increasingly demanded product-side camera lenses. While the camera lens is required to have characteristics such as high resolution, large aperture, and large image plane, it also requires a wide field of view and excellent imaging quality. However, under the trend of thin and light portable electronic products, how to meet the above requirements of the market has become a major challenge in the field of lens design.

Summary of the invention

The present application provides an optical imaging lens that is applicable to portable electronic products and can at least solve or partially solve at least one of the above disadvantages in the prior art.

In one aspect, the present application provides such an optical imaging lens, which includes, in order from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, Sixth lens and seventh lens. The first lens may have negative power, the object side may be convex, and the image side may be concave; the second lens may have power; the third lens may have positive power; the fourth lens may have positive power; The five lenses have power; the sixth lens has power; and the seventh lens may have negative power, and both the object side and the image side may be concave.

In one embodiment, the effective focal length f1 of the first lens and the total effective focal length f of the optical imaging lens may satisfy -3.5 <f1 / f <-2.

In one embodiment, the total effective focal length f of the optical imaging lens, the effective focal length f2 of the second lens, and the effective focal length f5 of the fifth lens may satisfy | f / f2 | + | f / f5 | <0.6.

In one embodiment, the effective focal length f4 of the fourth lens and the effective focal length f3 of the third lens may satisfy 0 <f4 / f3 <0.5.

In one embodiment, the curvature radius R1 of the object side of the first lens and the curvature radius R2 of the image side of the first lens may satisfy 2 <R1 / R2 <3.

In one embodiment, the curvature radius R3 of the object side of the second lens and the curvature radius R4 of the image side of the second lens may satisfy 0.5 <R3 / R4 <1.5.

In one embodiment, the curvature radius R7 of the object side of the fourth lens and the total effective focal length f of the optical imaging lens may satisfy 1 <R7 / f <1.8.

In one embodiment, the curvature radius R14 of the image side of the seventh lens and the curvature radius R13 of the object side of the seventh lens may satisfy -2.1 <R14 / R13 <0.

In one embodiment, the separation distance T12 on the optical axis between the first lens and the second lens and a half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens, ImgH, can satisfy 0.7 <T12 / ImgH <1.2.

In one embodiment, the center thickness CT6 of the sixth lens on the optical axis and the distance TTL on the optical axis from the object side of the first lens to the imaging surface of the optical imaging lens may satisfy 0.7 <CT6 / TTL * 10 <1.7.

In one embodiment, the center thickness CT7 of the seventh lens on the optical axis and the effective focal length f7 of the seventh lens satisfy −0.8 <CT7 / f7 <0.

In one embodiment, the maximum effective half-aperture DT11 of the object side of the first lens and the maximum effective half-aperture DT12 of the image side of the first lens may satisfy 1.8 <DT11 / DT12 <2.3.

In one embodiment, the maximum effective half-aperture DT72 of the image side of the seventh lens and the maximum effective half-aperture DT71 of the object side of the seventh lens may satisfy 1.5 <DT72 / DT71 <2.

In one embodiment, the maximum half field angle HFOV of the optical imaging lens can satisfy 72 ° <HFOV <92 °.

In one embodiment, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens may satisfy f / EPD <2.0.

This application uses seven lenses. By reasonably distributing the power, surface shape, center thickness of each lens, and the axial distance between each lens, the optical imaging lens has a wide angle, large aperture, and miniaturization. , At least one beneficial effect, such as high imaging quality.

BRIEF DESCRIPTION OF THE DRAWINGS

With reference to the drawings, other features, objects, and advantages of the present application will become more apparent through the following detailed description of the non-limiting embodiments. In the drawings:

FIG. 1 shows a schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application; FIGS. 2A to 2D respectively show on-axis chromatic aberration curves, astigmatism curves, distortion curves, and magnification chromatic aberrations of the optical imaging lens of Embodiment 1; curve;

FIG. 3 shows a schematic structural diagram of an optical imaging lens according to Embodiment 2 of the present application; FIGS. 4A to 4D respectively show on-axis chromatic aberration curves, astigmatism curves, distortion curves, and magnification chromatic aberrations of the optical imaging lens of Embodiment 2; curve;

FIG. 5 shows a schematic structural diagram of an optical imaging lens according to Embodiment 3 of the present application; FIGS. 6A to 6D show on-axis chromatic aberration curves, astigmatism curves, distortion curves, and magnification chromatic aberrations of the optical imaging lens of Embodiment 3, respectively. curve;

FIG. 7 shows a schematic structural diagram of an optical imaging lens according to Embodiment 4 of the present application; FIGS. 8A to 8D show on-axis chromatic aberration curves, astigmatism curves, distortion curves, and magnification chromatic aberrations of the optical imaging lens of Embodiment 4 curve;

FIG. 9 shows a schematic structural diagram of an optical imaging lens according to Embodiment 5 of the present application; FIGS. 10A to 10D respectively show on-axis chromatic aberration curves, astigmatism curves, distortion curves, and magnification chromatic aberrations of the optical imaging lens of Embodiment 5; curve;

FIG. 11 shows a schematic structural diagram of an optical imaging lens according to Embodiment 6 of the present application; FIGS. 12A to 12D respectively show on-axis chromatic aberration curves, astigmatism curves, distortion curves, and magnification chromatic aberrations of the optical imaging lens of Embodiment 6; curve;

FIG. 13 shows a schematic structural diagram of an optical imaging lens according to Embodiment 7 of the present application; FIGS. 14A to 14D respectively show on-axis chromatic aberration curves, astigmatism curves, distortion curves, and magnification chromatic aberrations of the optical imaging lens of Embodiment 7; curve;

FIG. 15 shows a schematic structural diagram of an optical imaging lens according to Embodiment 8 of the present application; FIGS. 16A to 16D show on-axis chromatic aberration curves, astigmatism curves, distortion curves, and magnification chromatic aberrations of the optical imaging lens of Embodiment 8 respectively. curve;

FIG. 17 shows a schematic structural diagram of an optical imaging lens according to Embodiment 9 of the present application; FIGS. 18A to 18D respectively show on-axis chromatic aberration curves, astigmatism curves, distortion curves, and magnification chromatic aberrations of the optical imaging lens of Embodiment 9; curve;

FIG. 19 shows a schematic structural diagram of an optical imaging lens according to Example 10 of the present application; FIGS. 20A to 20D show on-axis chromatic aberration curves, astigmatism curves, distortion curves, and magnification chromatic aberrations of the optical imaging lens of Example 10, respectively. curve.

detailed description

In order to better understand the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely descriptions of exemplary embodiments of the present application, and do not limit the scope of the present application in any way. Throughout the description, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

It should be noted that, in this specification, the expressions of the first, second, third, etc. are only used to distinguish one feature from another feature, and do not indicate any limitation on the feature. Therefore, without departing from the teachings of this application, a first lens discussed below may also be referred to as a second lens or a third lens.

In the drawings, for convenience of explanation, the thickness, size, and shape of the lens have been slightly exaggerated. Specifically, the shape of the spherical or aspherical surface 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 drawings are only examples and are not drawn to scale.

Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial area; if the lens surface is concave and the concave position is not defined, it means that the lens surface is at least in the paraxial area Concave. The surface of each lens closest to the object side is called the object side of the lens, and the surface of each lens closest to the image side is called the image side of the lens.

It should also be understood that the terms “including,” “including,” “having,” “including,” and / or “including” when used in this specification indicate the presence of stated features, elements, and / or components. But does not exclude the presence or addition of one or more other features, elements, components and / or combinations thereof. Furthermore, when an expression such as "at least one of" appears after the list of listed features, the entire listed feature is modified, rather than the individual elements in the list. In addition, when describing an embodiment of the present application, “may” is used to mean “one or more embodiments of the present 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 should also be understood that terms (e.g. terms defined in commonly used dictionaries) should be interpreted to have a meaning consistent with their meaning in the context of the relevant technology and will not be interpreted in an idealized or overly formal sense, unless This is clearly defined in this article.

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The application will be described in detail below with reference to the drawings and embodiments. The features, principles, and other aspects of this application are described in detail below.

An optical imaging lens according to an exemplary embodiment of the present application may include, for example, seven lenses having optical power, that is, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a first lens. Seven lenses. The seven lenses are sequentially arranged along the optical axis from the object side to the image side, and each adjacent lens can have an air gap.

In an exemplary embodiment, the first lens may have negative power, the object side may be convex, and the image side may be concave; the second lens may have positive or negative power; and the third lens may have positive power The fourth lens may have a positive or negative power; the sixth lens may have a positive or negative power; and the seventh lens may have a negative power; The side surface may be concave, and the image side may be concave. Reasonably distributing the system's power and avoiding too much focus, it can reduce the sensitivity of a single lens and provide looser tolerance conditions for actual processing and assembly processes.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy a conditional expression -3.5 <f1 / f <-2, where f is a total effective focal length of the optical imaging lens and f1 is an effective focal length of the first lens. More specifically, f and f1 can further satisfy -3.27≤f1 / f≤-2.01. If the conditional expression -3.5 <f1 / f <-2 is satisfied, the angle of view can be increased, the incident angle of the light at the second lens can be slowed, and the aperture of the subsequent lens can be reduced to maintain the lens miniaturization.

In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional expression | f / f2 | + | f / f5 | <0.6, where f is the total effective focal length of the optical imaging lens, and f2 is the effective length of the second lens. Focal length, f5 is the effective focal length of the fifth lens. More specifically, f, f2, and f5 can further satisfy 0 <| f / f2 | + | f / f5 | <0.6, for example, 0.05 ≦ | f / f2 | + | f / f5 | ≦ 0.54. Reasonably controlling the power of the second lens and the fifth lens can effectively balance the high-level coma and vertical axis chromatic aberrations produced by the second lens and the fifth lens, and at the same time reduce the aperture of the third lens and the fourth lens.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy a conditional expression of 0 <f4 / f3 <0.5, where f4 is an effective focal length of the fourth lens, and f3 is an effective focal length of the third lens. More specifically, f4 and f3 can further satisfy 0.01 ≦ f4 / f3 ≦ 0.25. Reasonable distribution of the power of the third lens and the fourth lens can effectively reduce the advanced spherical aberration and astigmatism generated by the third lens and the fourth lens, and at the same time, can reduce the deviation of light in the third lens and the fourth lens. Bend the angle to reduce the sensitivity of these two lenses.

In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional expression -0.8 <CT7 / f7 <0, where CT7 is the center thickness of the seventh lens on the optical axis and f7 is the effective focal length of the seventh lens. More specifically, CT7 and f7 can further satisfy -0.67≤CT7 / f7≤-0.20. Reasonably controlling the power and center thickness of the seventh lens can effectively balance the distortion and chromatic aberrations of the front lens that are not completely eliminated while reducing the system size, and further improve the imaging quality of the lens.

In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional expression 2 <R1 / R2 <3, where R1 is the curvature radius of the object side of the first lens, and R2 is the curvature radius of the image side of the first lens. . More specifically, R1 and R2 can further satisfy 2.18 ≦ R1 / R2 ≦ 2.68. Reasonably distribute the curvature radii of the object side and the image side of the first lens, avoid the incident angle and the exit angle of the light at the first lens from being too large, reduce the sensitivity of the lens, and increase the acceptable field of view angle of the lens.

In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional expression 0.5 <R3 / R4 <1.5, where R3 is the radius of curvature of the object side of the second lens and R4 is the radius of curvature of the image side of the second lens . More specifically, R3 and R4 can further satisfy 0.57 ≦ R3 / R4 ≦ 1.41. Reasonably controlling the curvature radius of the object side and the image side of the second lens can alleviate the deflection angle of the light in the second lens, and can effectively balance the chromatic aberration and distortion generated by the first lens.

In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional expression 1 <R7 / f <1.8, where R7 is the curvature radius of the object side of the fourth lens, and f is the total effective focal length of the optical imaging lens. More specifically, R7 and f can further satisfy 1.14 ≦ R7 / f ≦ 1.66. Reasonably controlling the curvature radius of the object side of the fourth lens and the total effective focal length of the optical imaging lens can slow down the incident angle of the light in the fourth lens and can effectively balance the residual high-level aberration and astigmatism of the front lens.

In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional expression -2.1 <R14 / R13 <0, where R14 is the curvature radius of the image side of the seventh lens, and R13 is the curvature of the object side of the seventh lens. radius. More specifically, R14 and R13 can further satisfy -2.09≤R14 / R13≤-0.01. Reasonably controlling the curvature radius of the object side and the image side of the seventh lens can reduce the incident angle of light on the image plane, enhance the illuminance of the edge field of view, and facilitate the matching of the lens and the chip's principal light angle (CRA).

In an exemplary embodiment, the optical imaging lens of the present application can satisfy a conditional expression of 72 ° <HFOV <92 °, where HFOV is a maximum half field angle of the optical imaging lens. More specifically, HFOV can further satisfy 72.5 ° ≦ HFOV ≦ 91.0 °. Under the premise of ensuring the miniaturization of the lens, by controlling the field of view, the aberration of the edge field of view can be avoided and the illuminance is too low, which is conducive to ensuring that the lens has excellent imaging quality in a wide field of view.

In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional expression f / EPD <2.0, where f is the total effective focal length of the optical imaging lens and EPD is the entrance pupil diameter of the optical imaging lens. More specifically, f and EPD can further satisfy 1.78 ≦ f / EPD ≦ 1.86. By controlling f / EPD <2.0, you can effectively increase the amount of light per unit time of the lens, increase the illumination of the edge field of view, and ensure that the lens has a good shooting effect in low-light environments.

In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional expression 0.7 <T12 / ImgH <1.2, where T12 is the distance between the first lens and the second lens on the optical axis, and ImgH is the Half of the diagonal of the effective pixel area on the imaging surface. More specifically, T12 and ImgH can further satisfy 0.97 ≦ T12 / ImgH ≦ 1.14. Reasonably controlling the air distance between the first lens and the second lens on the optical axis is not only conducive to the assembly of the lens, but also shortens the size of the lens. At the same time, it can slow the incident angle of light into the second lens and reduce the sensitivity of the lens.

In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional expression 1.8 <DT11 / DT12 <2.3, where DT11 is a maximum effective half-diameter of the object side of the first lens, and DT12 is an image side of the first lens. Maximum effective half-caliber. More specifically, DT11 and DT12 can further satisfy 1.92 ≦ DT11 / DT12 ≦ 2.21. By controlling the maximum effective half-aperture of the object side and the image side of the first lens within a reasonable range, it is not only conducive to reducing the size of the front end of the lens, but also to increase the amount of light per unit time of the edge field of view and increase the illumination of the edge field of view. .

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.5 <DT72 / DT71 <2, where DT72 is the maximum effective half-diameter of the image side of the seventh lens, and DT71 is the maximum effective half-diameter of the image side of the seventh lens. Maximum effective half-caliber. More specifically, DT72 and DT71 can further satisfy 1.63 ≦ DT72 / DT71 ≦ 1.84. By controlling the maximum effective half-aperture of the object side and the image side of the seventh lens, the size of the rear end of the lens can be reduced while ensuring the illuminance of the edge field of view. In addition, it is also beneficial to block the light with poor imaging quality in the edge field of view, ensuring the excellent imaging quality of the lens.

In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional expression 0.7 <CT6 / TTL * 10 <1.7, where CT6 is the center thickness of the sixth lens on the optical axis, and TTL is the object side of the first lens Distance to the imaging axis of the optical imaging lens on the optical axis. More specifically, CT6 and TTL can further satisfy 0.96 ≦ CT6 / TTL * 10 ≦ 1.58. Reasonably controlling the central thickness of the sixth lens on the optical axis and the axial distance from the object side of the first lens to the imaging surface can ensure the miniaturization of the lens and avoid problems such as processing difficulties caused by the thin lens. In addition, satisfying the conditional expression 0.7 <CT6 / TTL * 10 <1.7 is also beneficial to alleviate the deflection angle of the light in the sixth lens and further balance the advanced coma and astigmatism that are not completely eliminated by the front lens.

In an exemplary embodiment, the above-mentioned optical imaging lens may further include a diaphragm to improve the imaging quality of the lens. Alternatively, the diaphragm may be disposed between the third lens and the fourth lens. Optionally, the above-mentioned optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element on the imaging surface.

The optical imaging lens according to the above embodiment of the present application may employ multiple lenses, such as the seven lenses described above. By rationally distributing the power, surface shape, center thickness of each lens, and the axial distance between each lens, the size of the lens can be effectively reduced, the sensitivity of the lens can be reduced, and the processability of the lens can be improved. This makes the optical imaging lens more conducive to production and processing and is suitable for portable electronic products. The optical imaging lens configured as above can also have beneficial effects such as wide angle, large aperture, and excellent imaging quality.

In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface. Aspheric lenses are characterized by a curvature that varies continuously from the center of the lens to the periphery of the lens. Unlike spherical lenses, which have a constant curvature from the lens center to the periphery of the lens, aspheric lenses have better curvature radius characteristics, and have the advantages of improving distortion and astigmatic aberrations. The use of aspheric lenses can eliminate as much aberrations as possible during imaging, thereby improving imaging quality.

However, those skilled in the art should understand that, without departing from the technical solution claimed in this application, the number of lenses constituting the optical imaging lens may be changed to obtain various results and advantages described in this specification. For example, although seven lenses are described as an example in the embodiment, the optical imaging lens is not limited to including seven lenses. If necessary, the optical imaging lens may further include other numbers of lenses. Specific examples of the optical imaging lens applicable to the above embodiments will be further described below with reference to the drawings.

Example 1

An optical imaging lens according to Embodiment 1 of the present application will be described below with reference to FIGS. 1 to 2D. FIG. 1 is a schematic structural diagram of an optical imaging lens according to Embodiment 1 of the present application.

As shown in FIG. 1, the optical imaging lens according to the exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, The fifth lens E5, the sixth lens E6, the seventh lens E7, and the imaging surface S15.

The first lens E1 has a negative optical power, and an object side surface S1 thereof is a convex surface, and an image side surface S2 is a concave surface. The second lens E2 has a positive power, and the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive power, and the object side surface S5 is a concave surface, and the image side surface S6 is a convex surface. The fourth lens E4 has a positive power, and the object side surface S7 is a convex surface, and the image side surface S8 is a convex surface. The fifth lens E5 has a negative power, and the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens E6 has a positive power, and the object side surface S11 is a convex surface, and the image side surface S12 is a convex surface. The seventh lens E7 has a negative power, and the object side surface S13 is a concave surface, and the image side surface S14 is a concave surface. The light from the object sequentially passes through the surfaces S1 to S14 and is finally imaged on the imaging surface S15. Optionally, an aperture (not shown) may be provided between the third lens E3 and the fourth lens E4 to improve the imaging quality of the lens.

Table 1 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 1, where the units of the radius of curvature and thickness are millimeters (mm).

Table 1

As can be seen from Table 1, the object side and the image side of any one of the first lens E1 to the seventh lens E7 are aspherical surfaces. In this embodiment, the surface type x of each aspheric lens can be defined using, but not limited to, the following aspheric formula:

Where x is the distance vector from the vertex of the aspheric surface when the aspheric surface is at the height h along the optical axis; c is the paraxial curvature of the aspheric surface, c = 1 / R The inverse of the radius of curvature R in 1); k is the conic coefficient (given in Table 1); Ai is the correction coefficient of the aspherical i-th order. Table 2 below shows the higher-order coefficients A ₄ , A ₆ , A ₈ , A ₁₀ , A ₁₂ , A ₁₄ , A ₁₆ , A _18, and A ₂₀ that can be used for each aspherical mirror surface S1-S14 in Example 1. .

Face number	A4	A6	A8	A10	A12	A14	A16	A18	A20
S1	1.5210E-03	-3.8000E-04	9.4300E-05	-2.2000E-05	3.2100E-06	-2.8000E-07	1.5100E-08	-4.3000E-10	4.9200E-12
S2	5.6050E-03	-4.1760E-02	1.1020E-01	-1.5605E-01	1.3941E-01	-7.8330E-02	2.7064E-02	-5.2600E-03	4.4400E-04
S3	-2.6300E-03	-3.1700E-02	9.7536E-02	-2.9315E-01	5.2235E-01	-5.8974E-01	4.0308E-01	-1.5251E-01	2.4569E-02
S4	1.5569E-02	-1.0074E-01	3.0540E-01	-9.4765E-01	1.7507E + 00	-2.0505E + 00	1.5051E + 00	-6.2760E-01	1.1321E-01
S5	-6.3940E-02	2.7900E-04	-2.7197E-01	1.0139E + 00	-2.1509E + 00	3.0204E + 00	-2.6341E + 00	1.2637E + 00	-2.5387E-01
S6	-8.4600E-03	-2.9500E-02	-1.6720E-02	5.3413E-01	-1.8709E + 00	3.5992E + 00	-3.9235E + 00	2.2171E + 00	-5.0357E-01
S7	9.6840E-03	-4.5800E-02	2.7208E-01	-9.6827E-01	2.1969E + 00	-3.1502E + 00	2.7733E + 00	-1.3720E + 00	2.9449E-01
S8	-9.0830E-02	7.5815E-02	-2.5627E-01	1.8383E + 00	-7.3440E + 00	1.7014E + 01	-2.2726E + 01	1.6272E + 01	-4.8404E + 00
S9	-3.9100E-01	5.0559E-01	-1.8943E + 00	6.4922E + 00	-1.4699E + 01	2.2015E + 01	-2.0728E + 01	1.0760E + 01	-2.2793E + 00
S10	-1.2171E-01	-4.1811E-01	2.1518E + 00	-5.5034E + 00	9.7928E + 00	-1.1733E + 01	8.9162E + 00	-3.8817E + 00	7.3836E-01
S11	2.7709E-02	-9.9310E-02	4.2224E-01	-8.5033E-01	1.0106E + 00	-7.5866E-01	3.5590E-01	-9.5700E-02	1.1308E-02
S12	-1.6518E-01	1.1709E-01	-2.8910E-02	-8.9500E-02	9.6302E-02	-3.1550E-02	-9.8300E-03	1.0568E-02	-2.2900E-03
S13	-3.8304E-01	1.5580E-01	-1.0646E-01	3.9396E-01	-8.4420E-01	9.5411E-01	-6.0319E-01	2.0408E-01	-2.8970E-02
S14	-6.2840E-02	1.2590E-02	5.7450E-03	-6.7800E-03	2.8160E-03	-6.5000E-04	8.7000E-05	-5.6000E-06	9.6200E-08

Table 2

Table 3 shows the effective focal lengths f1 to f7 of each lens, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side S1 to the imaging surface S15 of the first lens E1 and the maximum half-view Field angle HFOV.

f1 (mm)	-3.55	f6 (mm)	2.14
f2 (mm)	7.75	f7 (mm)	-1.87
f3 (mm)	56.00	f (mm)	1.65
f4 (mm)	2.94	TTL (mm)	7.70
f5 (mm)	-5.10	HFOV (°)	91.0

table 3

FIG. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of Embodiment 1, which indicates that light rays with different wavelengths deviate from the focal point after passing through the lens. FIG. 2B shows an astigmatism curve of the optical imaging lens of Example 1, which represents a meridional image plane curvature and a sagittal image plane curvature. FIG. 2C illustrates a distortion curve of the optical imaging lens of Example 1, which represents the value of the distortion magnitude under different fields of view. FIG. 2D shows the magnification chromatic aberration curve of the optical imaging lens of Example 1, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. It can be known from FIG. 2A to FIG. 2D that 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 will be described below with reference to FIGS. 3 to 4D. In this embodiment and the following embodiments, for the sake of brevity, a description similar to that in Embodiment 1 will be omitted. FIG. 3 is a schematic structural diagram 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 includes, in order from the object side to the image side along the optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, The fifth lens E5, the sixth lens E6, the seventh lens E7, and the imaging surface S15.

The first lens E1 has a negative optical power, and an object side surface S1 thereof is a convex surface, and an image side surface S2 is a concave surface. The second lens E2 has a negative power, and the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive power, and the object side surface S5 is a convex surface, and the image side surface S6 is a convex surface. The fourth lens E4 has a positive power, and the object side surface S7 is a convex surface, and the image side surface S8 is a convex surface. The fifth lens E5 has a negative power, and the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens E6 has a positive power, and the object side surface S11 is a convex surface, and the image side surface S12 is a convex surface. The seventh lens E7 has a negative power, and the object side surface S13 is a concave surface, and the image side surface S14 is a concave surface. The light from the object sequentially passes through the surfaces S1 to S14 and is finally imaged on the imaging surface S15. Optionally, an aperture (not shown) may be provided between the third lens E3 and the fourth lens E4 to improve the imaging quality of the lens.

Table 4 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 2, where the units of the radius of curvature and thickness are millimeters (mm). Table 5 shows the higher-order term coefficients that can be used for each aspherical mirror surface in Embodiment 2, where each aspheric surface type can be defined by the formula (1) given in the above Embodiment 1. Table 6 shows the effective focal lengths f1 to f7 of the lenses in Example 2, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side S1 to the imaging surface S15 of the first lens E1, and the maximum half-view Field angle HFOV.

Table 4

Face number	A4	A6	A8	A10	A12	A14	A16	A18	A20
S1	2.7790E-03	-1.8000E-04	-2.5000E-05	7.9500E-06	-2.1000E-06	3.4500E-07	-3.0000E-08	1.3500E-09	-2.6000E-11
S2	-1.4670E-02	-1.6910E-02	7.2330E-02	-1.2664E-01	1.3806E-01	-9.3990E-02	3.9270E-02	-9.2200E-03	9.4200E-04
S3	2.1637E-02	-7.2840E-02	5.5389E-02	-1.5449E-01	2.2512E-01	-1.9194E-01	1.0309E-01	-2.9410E-02	2.8850E-03
S4	4.9291E-02	-1.6569E-01	3.0903E-01	-1.3293E + 00	3.3180E + 00	-5.0876E + 00	4.9582E + 00	-2.7674E + 00	6.6996E-01
S5	-3.3300E-03	-9.0580E-02	5.4912E-02	-2.0358E-01	3.5136E-01	-3.1312E-01	5.4000E-01	-6.5968E-01	2.7339E-01
S6	3.1220E-03	2.5278E-02	-3.7902E-01	1.9758E + 00	-6.0571E + 00	1.0985E + 01	-1.1394E + 01	6.1882E + 00	-1.3582E + 00
S7	6.4420E-03	1.5714E-02	-2.1610E-02	6.4886E-01	-3.8550E + 00	1.0689E + 01	-1.5901E + 01	1.2323E + 01	-3.9268E + 00
S8	-6.9810E-02	1.4968E-01	-4.8586E-01	2.4619E + 00	-8.3050E + 00	1.7556E + 01	-2.2412E + 01	1.5834E + 01	-4.7684E + 00
S9	-2.0842E-01	-2.7342E-01	1.6615E + 00	-6.4976E + 00	1.8568E + 01	-3.5791E + 01	4.3273E + 01	-2.9600E + 01	8.7083E + 00
S10	-3.8700E-02	-4.6346E-01	1.8985E + 00	-4.6377E + 00	8.0793E + 00	-9.7169E + 00	7.5920E + 00	-3.4471E + 00	6.8752E-01
S11	-2.2740E-02	5.8464E-02	3.0093E-02	-2.0547E-01	3.0025E-01	-2.4029E-01	1.1556E-01	-3.1790E-02	3.8850E-03
S12	-1.3740E-01	5.3255E-02	1.0461E-01	-3.4350E-01	4.7373E-01	-3.9110E-01	1.8904E-01	-4.7240E-02	4.4730E-03
S13	-2.8947E-01	3.6742E-02	1.7088E-01	-3.2244E-01	3.1077E-01	-1.6724E-01	4.0954E-02	3.4300E-03	-2.6800E-03
S14	-5.0760E-02	-1.0210E-02	3.0616E-02	-2.5430E-02	1.2202E-02	-3.7700E-03	7.3000E-04	-8.0000E-05	3.7800E-06

table 5

f1 (mm)	-3.40	f6 (mm)	2.18
f2 (mm)	-66.12	f7 (mm)	-1.98
f3 (mm)	13.84	f (mm)	1.60
f4 (mm)	2.45	TTL (mm)	7.60
f5 (mm)	-5.76	HFOV (°)	89.8

Table 6

FIG. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of Embodiment 2, which indicates that light rays with different wavelengths deviate from the focal point after passing through the lens. FIG. 4B shows an astigmatism curve of the optical imaging lens of Example 2, which represents a meridional image plane curvature and a sagittal image plane curvature. FIG. 4C shows a distortion curve of the optical imaging lens of Example 2, which represents the value of the distortion magnitude in the case of different fields of view. FIG. 4D shows the magnification chromatic aberration curve of the optical imaging lens of Example 2, which represents the deviation of light at different image heights on the imaging surface after passing through the lens. According to FIG. 4A to FIG. 4D, it can be known that 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 FIGS. 5 to 6D. FIG. 5 is a schematic structural 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 includes, in order from the object side to the image side along the optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, The fifth lens E5, the sixth lens E6, the seventh lens E7, and the imaging surface S15.

The first lens E1 has a negative optical power, and an object side surface S1 thereof is a convex surface, and an image side surface S2 is a concave surface. The second lens E2 has a positive power, and the object side surface S3 is a convex surface and the image side surface S4 is a concave surface. The third lens E3 has a positive power, and the object side surface S5 is a convex surface, and the image side surface S6 is a convex surface. The fourth lens E4 has a positive power, and the object side surface S7 is a convex surface, and the image side surface S8 is a convex surface. The fifth lens E5 has a negative power, and the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens E6 has a positive power, and the object side surface S11 is a convex surface, and the image side surface S12 is a convex surface. The seventh lens E7 has a negative power, and the object side surface S13 is a concave surface, and the image side surface S14 is a concave surface. The light from the object sequentially passes through the surfaces S1 to S14 and is finally imaged on the imaging surface S15. Optionally, an aperture (not shown) may be provided between the third lens E3 and the fourth lens E4 to improve the imaging quality of the lens.

Table 7 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 3. The units of the radius of curvature and thickness are millimeters (mm). Table 8 shows the higher-order term coefficients that can be used for each aspherical mirror surface in Embodiment 3, where each aspherical surface type can be defined by the formula (1) given in Embodiment 1 above. Table 9 shows the effective focal lengths f1 to f7 of the lenses in Example 3, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side S1 to the imaging surface S15 of the first lens E1, and the maximum half-view Field angle HFOV.

Table 7

Face number	A4	A6	A8	A10	A12	A14	A16	A18	A20
S1	2.8539E-03	-9.4000E-05	-9.7000E-06	6.8000E-06	-3.4000E-06	6.6700E-07	-6.7000E-08	3.4800E-09	-7.4000E-11
S2	-2.1664E-02	-4.7800E-03	5.2630E-02	-1.0219E-01	1.1833E-01	-8.3920E-02	3.6162E-02	-8.6800E-03	9.0100E-04
S3	2.4125E-02	-7.3920E-02	9.1239E-02	-2.7553E-01	4.6303E-01	-4.8227E-01	3.1946E-01	-1.1987E-01	1.9111E-02
S4	5.0274E-02	-1.4589E-01	1.5900E-01	-6.1213E-01	1.2736E + 00	-1.4805E + 00	1.1243E + 00	-5.3129E-01	1.1901E-01
S5	2.0969E-03	-1.0793E-01	2.4959E-02	5.8553E-02	-4.7636E-01	1.5924E + 00	-2.1716E + 00	1.3571E + 00	-3.3377E-01
S6	1.0144E-02	-5.6480E-02	1.9381E-01	-8.5156E-01	2.6815E + 00	-5.3927E + 00	6.8637E + 00	-5.0143E + 00	1.5567E + 00
S7	3.9524E-03	2.3282E-02	-1.2112E-01	1.2965E + 00	-6.3177E + 00	1.6440E + 01	-2.3885E + 01	1.8345E + 01	-5.8251E + 00
S8	-6.7988E-02	1.7035E-01	-7.8597E-01	4.4151E + 00	-1.5616E + 01	3.3906E + 01	-4.3982E + 01	3.1334E + 01	-9.4506E + 00
S9	-2.1117E-01	-2.0576E-01	1.3607E + 00	-5.5333E + 00	1.5918E + 01	-3.0505E + 01	3.6494E + 01	-2.4708E + 01	7.2194E + 00
S10	-4.8796E-02	-3.1984E-01	1.3524E + 00	-3.1755E + 00	5.0511E + 00	-5.3372E + 00	3.5735E + 00	-1.3736E + 00	2.3201E-01
S11	-4.5439E-02	1.8857E-01	-3.0526E-01	2.9331E-01	-1.7128E-01	5.0260E-02	1.2180E-03	-5.4500E-03	1.1720E-03
S12	-1.2803E-01	3.8163E-02	1.2101E-01	-4.0277E-01	6.2347E-01	-5.8675E-01	3.3029E-01	-1.0083E-01	1.2751E-02
S13	-2.7476E-01	3.8243E-02	1.3583E-01	-2.8002E-01	3.1555E-01	-2.2410E-01	9.7209E-02	-2.0650E-02	1.2580E-03

S14

-4.9140E-02

-7.8100E-03

2.4714E-02

-2.0140E-02

9.4830E-03

-2.9000E-03

5.5400E-04

-6.0000E-05

2.7600E-06

Table 8

f1 (mm)	-3.32	f6 (mm)	2.14
f2 (mm)	61.05	f7 (mm)	-1.97
f3 (mm)	21.89	f (mm)	1.60
f4 (mm)	2.45	TTL (mm)	7.60
f5 (mm)	-5.24	HFOV (°)	73.8

Table 9

FIG. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of Embodiment 3, which indicates that light rays with different wavelengths deviate from the focal point after passing through the lens. FIG. 6B shows an astigmatism curve of the optical imaging lens of Example 3, which represents a meridional image plane curvature and a sagittal image plane curvature. FIG. 6C shows a distortion curve of the optical imaging lens of Example 3, which represents the value of the distortion magnitude in the case of different fields of view. FIG. 6D shows the magnification chromatic aberration curve of the optical imaging lens of Example 3, which represents the deviation of light at different image heights on the imaging surface after passing through the lens. According to FIG. 6A to FIG. 6D, it can be known that 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 FIGS. 7 to 8D. FIG. 7 is a schematic structural 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 includes: a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, The fifth lens E5, the sixth lens E6, the seventh lens E7, and the imaging surface S15.

The first lens E1 has a negative optical power, and an object side surface S1 thereof is a convex surface, and an image side surface S2 is a concave surface. The second lens E2 has a positive power, and the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive power, and the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface. The fourth lens E4 has a positive power, and the object side surface S7 is a convex surface, and the image side surface S8 is a convex surface. The fifth lens E5 has a positive power, and the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens E6 has a positive power, and the object side surface S11 is a convex surface, and the image side surface S12 is a convex surface. The seventh lens E7 has a negative power, and the object side surface S13 is a concave surface, and the image side surface S14 is a concave surface. The light from the object sequentially passes through the surfaces S1 to S14 and is finally imaged on the imaging surface S15. Optionally, an aperture (not shown) may be provided between the third lens E3 and the fourth lens E4 to improve the imaging quality of the lens.

Table 10 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 4, where the units of the radius of curvature and thickness are millimeters (mm). Table 11 shows the high-order term coefficients that can be used for each aspherical mirror surface in Embodiment 4, where each aspheric surface type can be defined by the formula (1) given in the above Embodiment 1. Table 12 shows the effective focal lengths f1 to f7 of each lens, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side S1 to the imaging surface S15 of the first lens E1 and the maximum half-view Field angle HFOV.

Table 10

Face number	A4	A6	A8	A10	A12	A14	A16	A18	A20
S1	1.9526E-03	-4.6000E-04	-3.0000E-06	1.2700E-05	-1.9000E-06	1.4800E-07	-8.8000E-09	4.3000E-10	-1.0000E-11
S2	-2.7546E-02	-5.5000E-03	6.1282E-02	-1.2133E-01	1.3874E-01	-9.6760E-02	4.0790E-02	-9.5700E-03	9.6700E-04
S3	2.3017E-02	-7.4540E-02	1.3126E-01	-4.6252E-01	8.9579E-01	-1.0381E + 00	7.2798E-01	-2.8343E-01	4.7029E-02
S4	4.6887E-02	-1.2925E-01	3.1133E-02	-3.0601E-01	1.0336E + 00	-1.5885E + 00	1.4208E + 00	-7.1636E-01	1.5712E-01
S5	8.8619E-03	-1.2739E-01	-7.3300E-02	4.0423E-01	-6.5290E-01	9.8500E-01	-1.1528E + 00	6.9028E-01	-1.5030E-01
S6	2.6900E-02	-2.4700E-02	-3.8058E-01	2.2691E + 00	-6.7837E + 00	1.2402E + 01	-1.3675E + 01	8.0620E + 00	-1.9160E + 00
S7	1.0794E-02	-1.6400E-02	2.2530E-01	-1.2916E + 00	4.3554E + 00	-9.1934E + 00	1.1910E + 01	-8.6922E + 00	2.7678E + 00
S8	-9.6430E-02	1.0861E-01	3.0031E-02	2.2112E-02	-1.2554E + 00	5.1920E + 00	-9.6114E + 00	8.6875E + 00	-3.0794E + 00
S9	2.9150E-03	-1.6322E + 00	6.2486E + 00	-1.8374E + 01	4.2088E + 01	-6.7975E + 01	7.1113E + 01	-4.3604E + 01	1.2018E + 01
S10	2.6093E-02	-1.0366E + 00	3.2216E + 00	-6.8263E + 00	1.3662E + 01	-2.1916E + 01	2.2767E + 01	-1.3142E + 01	3.2003E + 00
S11	1.4952E-01	-4.5168E-01	5.9041E-01	8.3714E-01	-3.8664E + 00	5.5603E + 00	-4.1080E + 00	1.5744E + 00	-2.4843E-01
S12	-1.2956E-01	9.5687E-02	-5.2560E-02	-3.8150E-02	1.7872E-02	8.5145E-02	-1.2581E-01	6.8959E-02	-1.3500E-02
S13	-3.2198E-01	1.8804E-01	-4.2323E-01	1.2056E + 00	-2.3631E + 00	2.8923E + 00	-2.0996E + 00	8.3162E-01	-1.3799E-01
S14	-7.0883E-02	2.5429E-02	-4.2900E-03	-2.7100E-03	2.0690E-03	-6.9000E-04	1.3100E-04	-1.4000E-05	6.5500E-07

Table 11

f1 (mm)	-3.34	f6 (mm)	2.52
f2 (mm)	45.44	f7 (mm)	-1.74
f3 (mm)	272.93	f (mm)	1.56
f4 (mm)	2.35	TTL (mm)	7.46
f5 (mm)	129.82	HFOV (°)	72.5

Table 12

FIG. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of Example 4, which indicates that light rays with different wavelengths deviate from the focal point after passing through the lens. FIG. 8B shows an astigmatism curve of the optical imaging lens of Example 4, which represents a meridional image plane curvature and a sagittal image plane curvature. FIG. 8C shows a distortion curve of the optical imaging lens of Example 4, which represents the value of the distortion magnitude in the case of different fields of view. FIG. 8D shows a magnification chromatic aberration curve of the optical imaging lens of Example 4, which represents the deviation of light at different image heights on the imaging surface after passing through the lens. According to FIG. 8A to FIG. 8D, it can be known that 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 FIGS. 9 to 10D. FIG. 9 is a schematic structural diagram 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 includes, in order from the object side to the image side along the optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, The fifth lens E5, the sixth lens E6, the seventh lens E7, and the imaging surface S15.

The first lens E1 has a negative optical power, and an object side surface S1 thereof is a convex surface, and an image side surface S2 is a concave surface. The second lens E2 has a negative power, and the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive power, and the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface. The fourth lens E4 has a positive power, and the object side surface S7 is a convex surface, and the image side surface S8 is a convex surface. The fifth lens E5 has a negative power, and the object side surface S9 is a concave surface, and the image side surface S10 is a convex surface. The sixth lens E6 has a positive power, and the object side surface S11 is a convex surface, and the image side surface S12 is a convex surface. The seventh lens E7 has a negative power, and the object side surface S13 is a concave surface, and the image side surface S14 is a concave surface. The light from the object sequentially passes through the surfaces S1 to S14 and is finally imaged on the imaging surface S15. Optionally, an aperture (not shown) may be provided between the third lens E3 and the fourth lens E4 to improve the imaging quality of the lens.

Table 13 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 5, where the units of the radius of curvature and thickness are millimeters (mm). Table 14 shows the higher-order term coefficients that can be used for each aspherical mirror surface in Embodiment 5, where each aspheric surface type can be defined by the formula (1) given in the above Embodiment 1. Table 15 shows the effective focal lengths f1 to f7 of each lens, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side S1 to the imaging surface S15 of the first lens E1 and the maximum half-view Field angle HFOV.

Table 13

Face number	A4	A6	A8	A10	A12	A14	A16	A18	A20
S1	1.8036E-03	-5.7300E-04	3.4000E-05	1.1200E-05	-2.6000E-06	2.6700E-07	-1.5000E-08	4.7500E-10	-6.4000E-12
S2	-2.4582E-02	-2.2918E-02	1.0535E-01	-1.9410E-01	2.0883E-01	-1.3757E-01	5.4942E-02	-1.2260E-02	1.1830E-03
S3	6.0986E-02	-4.9779E-01	2.1328E + 00	-5.9828E + 00	1.0422E + 01	-1.1454E + 01	7.7344E + 00	-2.9269E + 00	4.7508E-01
S4	3.2160E-02	-6.4926E-02	-2.6978E-01	9.5226E-01	-2.5075E + 00	4.2570E + 00	-4.1017E + 00	2.0651E + 00	-4.2097E-01

S5	1.2551E-02	8.7477E-02	-1.7392E + 00	8.2555E + 00	-2.3577E + 01	4.1551E + 01	-4.3868E + 01	2.5316E + 01	-6.1371E + 00
S6	-1.3508E-02	1.1294E-01	-4.0568E-01	8.9192E-01	8.8039E-01	-1.0832E + 01	2.6863E + 01	-2.9698E + 01	1.2621E + 01
S7	9.0710E-03	9.4223E-02	-4.5027E-01	1.3592E + 00	-2.5098E + 00	2.2432E + 00	-2.2223E-01	-1.0831E + 00	6.0138E-01
S8	-4.1282E-02	-2.5895E-01	3.0436E + 00	-1.7147E + 01	5.9371E + 01	-1.2710E + 02	1.6337E + 02	-1.1495E + 02	3.3855E + 01
S9	-3.1274E-01	-4.9257E-01	3.1661E + 00	-1.2403E + 01	3.8472E + 01	-7.9531E + 01	9.8985E + 01	-6.7369E + 01	1.9420E + 01
S10	1.4741E-01	-2.5341E + 00	1.0875E + 01	-2.8527E + 01	5.1748E + 01	-6.3729E + 01	5.0356E + 01	-2.2903E + 01	4.5366E + 00
S11	3.9288E-01	-2.2978E + 00	8.1901E + 00	-1.8772E + 01	2.8422E + 01	-2.8351E + 01	1.7930E + 01	-6.5165E + 00	1.0364E + 00
S12	-1.3044E-01	2.0703E-01	-6.4464E-01	1.4913E + 00	-2.3176E + 00	2.2611E + 00	-1.3037E + 00	4.0297E-01	-5.1340E-02
S13	-3.0974E-01	2.3228E-01	-8.0791E-01	2.2816E + 00	-4.0940E + 00	4.6792E + 00	-3.2748E + 00	1.2781E + 00	-2.1229E-01
S14	-4.7662E-02	2.0901E-03	1.3822E-02	-1.2750E-02	6.1280E-03	-1.7700E-03	3.0600E-04	-2.9000E-05	1.1100E-06

Table 14

f1 (mm)	-3.00	f6 (mm)	2.32
f2 (mm)	-16.66	f7 (mm)	-1.87
f3 (mm)	9.40	f (mm)	1.34
f4 (mm)	2.32	TTL (mm)	7.44
f5 (mm)	-26.83	HFOV (°)	75.0

Table 15

FIG. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of Embodiment 5, which indicates that light rays with different wavelengths deviate from the focal point after passing through the lens. FIG. 10B shows an astigmatism curve of the optical imaging lens of Example 5, which represents a meridional image plane curvature and a sagittal image plane curvature. FIG. 10C shows a distortion curve of the optical imaging lens of Example 5, which represents the value of the distortion magnitude in the case of different fields of view. FIG. 10D shows the magnification chromatic aberration curve of the optical imaging lens of Example 5, which represents the deviation of light at different image heights on the imaging surface after passing through the lens. It can be seen from FIGS. 10A to 10D that 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 FIGS. 11 to 12D. FIG. 11 is 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 includes, in order from the object side to the image side along the optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, The fifth lens E5, the sixth lens E6, the seventh lens E7, and the imaging surface S15.

The first lens E1 has a negative optical power, and an object side surface S1 thereof is a convex surface, and an image side surface S2 is a concave surface. The second lens E2 has a positive power, and the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive power, and the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface. The fourth lens E4 has a positive power, and the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface. The fifth lens E5 has a positive power, and the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens E6 has a positive power, and the object side surface S11 is a convex surface, and the image side surface S12 is a convex surface. The seventh lens E7 has a negative power, and the object side surface S13 is a concave surface, and the image side surface S14 is a concave surface. The light from the object sequentially passes through the surfaces S1 to S14 and is finally imaged on the imaging surface S15. Optionally, an aperture (not shown) may be provided between the third lens E3 and the fourth lens E4 to improve the imaging quality of the lens.

Table 16 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 6, where the units of the radius of curvature and thickness are millimeters (mm). Table 17 shows the higher-order coefficients that can be used for each aspherical mirror surface in Embodiment 6, where each aspherical surface type can be defined by the formula (1) given in the above-mentioned Embodiment 1. Table 18 shows the effective focal lengths f1 to f7 of the lenses in Example 6, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side S1 to the imaging surface S15 of the first lens E1, and the maximum half field of view. Angular HFOV.

Table 16

Face number	A4	A6	A8	A10	A12	A14	A16	A18	A20
S1	2.7850E-03	-8.8000E-04	6.6400E-05	2.0800E-05	-6.6000E-06	8.7300E-07	-6.3000E-08	2.4300E-09	-4.0000E-11
S2	-1.9280E-02	-1.9370E-02	1.1551E-01	-2.4966E-01	2.9501E-01	-2.0452E-01	8.3329E-02	-1.8530E-02	1.7500E-03
S3	2.2800E-02	-7.5990E-02	1.0792E-01	-3.1177E-01	5.1276E-01	-5.3722E-01	3.6923E-01	-1.4748E-01	2.5302E-02
S4	5.1628E-02	-2.2943E-01	5.5504E-01	-1.9774E + 00	4.3400E + 00	-5.6424E + 00	4.4403E + 00	-1.9720E + 00	3.7947E-01
S5	-2.6330E-02	-9.4580E-02	2.4488E-01	-5.9725E-01	2.6555E-01	2.0971E + 00	-4.4759E + 00	3.5044E + 00	-9.8615E-01
S6	-2.3900E-03	-8.2820E-02	1.0275E + 00	-5.1996E + 00	1.5655E + 01	-3.0243E + 01	3.6946E + 01	-2.6307E + 01	8.3139E + 00
S7	-1.0830E-02	3.4720E-02	-2.6017E-01	2.9131E + 00	-1.5573E + 01	4.4057E + 01	-6.9414E + 01	5.7506E + 01	-1.9395E + 01
S8	-1.9994E-01	3.2719E-01	-1.2785E + 00	8.2214E + 00	-3.2459E + 01	7.7214E + 01	-1.0528E + 02	7.3150E + 01	-1.8126E + 01
S9	1.2528E-01	-2.3624E + 00	4.3364E + 00	1.0812E + 01	-9.8590E + 01	3.0958E + 02	-5.2008E + 02	4.5704E + 02	-1.6376E + 02
S10	1.8756E-01	-2.4988E + 00	9.8351E + 00	-2.4602E + 01	4.2637E + 01	-4.8038E + 01	3.0216E + 01	-6.6921E + 00	-1.1049E + 00
S11	3.4548E-01	-1.9687E + 00	7.5957E + 00	-1.7993E + 01	2.6612E + 01	-2.4738E + 01	1.3930E + 01	-4.2708E + 00	5.2875E-01
S12	-2.0865E-01	3.9843E-01	-1.1518E + 00	2.6859E + 00	-4.2841E + 00	4.2777E + 00	-2.5070E + 00	7.8331E-01	-1.0049E-01
S13	-3.4200E-01	2.4983E-01	-4.1933E-01	4.0597E-01	4.3858E-02	-6.8032E-01	8.3588E-01	-4.1505E-01	7.2618E-02
S14	-8.3900E-02	3.9773E-02	-1.8270E-02	4.7480E-03	2.6200E-04	-7.5000E-04	2.7400E-04	-4.6000E-05	3.0700E-06

Table 17

f1 (mm)	-2.73	f6 (mm)	2.23
f2 (mm)	24.58	f7 (mm)	-2.02
f3 (mm)	71.93	f (mm)	1.34
f4 (mm)	2.92	TTL (mm)	7.45
f5 (mm)	12.33	HFOV (°)	78.0

Table 18

FIG. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of Example 6, which indicates that light rays with different wavelengths deviate from the focal point after passing through the lens. FIG. 12B shows an astigmatism curve of the optical imaging lens of Example 6, which represents a meridional image plane curvature and a sagittal image plane curvature. FIG. 12C shows a distortion curve of the optical imaging lens of Example 6, which represents the value of the distortion magnitude in the case of different fields of view. FIG. 12D shows the magnification chromatic aberration curve of the optical imaging lens of Example 6, which represents the deviation of light at different image heights on the imaging surface after passing through the lens. According to FIG. 12A to FIG. 12D, it can be known that 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 FIGS. 13 to 14D. FIG. 13 is a schematic structural 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 includes, in order from the object side to the image side along the optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, The fifth lens E5, the sixth lens E6, the seventh lens E7, and the imaging surface S15.

The first lens E1 has a negative optical power, and an object side surface S1 thereof is a convex surface, and an image side surface S2 is a concave surface. The second lens E2 has a positive power, and the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive power, and the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface. The fourth lens E4 has a positive power, and the object side surface S7 is a convex surface, and the image side surface S8 is a convex surface. The fifth lens E5 has a positive power, and the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens E6 has a negative power, and the object side surface S11 is a concave surface, and the image side surface S12 is a convex surface. The seventh lens E7 has a negative power, and the object side surface S13 is a concave surface, and the image side surface S14 is a concave surface. The light from the object sequentially passes through the surfaces S1 to S14 and is finally imaged on the imaging surface S15. Optionally, an aperture (not shown) may be provided between the third lens E3 and the fourth lens E4 to improve the imaging quality of the lens.

Table 19 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 7, where the units of the radius of curvature and thickness are millimeters (mm). Table 20 shows the higher-order term coefficients that can be used for each aspherical mirror surface in Embodiment 7, where each aspheric surface type can be defined by the formula (1) given in Embodiment 1 above. Table 21 shows the effective focal lengths f1 to f7 of each lens, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side S1 to the imaging surface S15 of the first lens E1, and the maximum half field of view Angular HFOV.

Table 19

Face number	A4	A6	A8	A10	A12	A14	A16	A18	A20
S1	1.5930E-03	8.0600E-04	-9.8000E-04	3.9900E-04	-9.2000E-05	1.2900E-05	-1.1000E-06	5.0400E-08	-9.9000E-10
S2	-3.6020E-02	1.4045E-01	-4.2308E-01	6.6806E-01	-6.0998E-01	3.3502E-01	-1.0835E-01	1.8798E-02	-1.3200E-03
S3	1.8914E-02	-5.7220E-02	-1.3870E-02	1.6054E-01	-4.8807E-01	6.8062E-01	-4.8800E-01	1.7691E-01	-2.5590E-02
S4	6.4019E-02	-3.9891E-01	1.6247E + 00	-5.2887E + 00	1.0355E + 01	-1.2338E + 01	8.9143E + 00	-3.6135E + 00	6.3306E-01
S5	-4.1100E-02	1.6391E-01	-1.5345E + 00	6.3808E + 00	-1.6818E + 01	2.8547E + 01	-2.9669E + 01	1.6939E + 01	-4.0637E + 00
S6	3.3037E-02	2.5576E-02	-6.5256E-01	4.0401E + 00	-1.4195E + 01	3.0295E + 01	-3.8130E + 01	2.5563E + 01	-7.0352E + 00
S7	4.7150E-03	3.4578E-01	-3.0120E + 00	1.3911E + 01	-3.9436E + 01	6.9889E + 01	-7.5404E + 01	4.5275E + 01	-1.1593E + 01
S8	-7.6460E-02	-4.5760E-02	7.6292E-01	-1.8627E-01	-1.1990E + 01	4.9999E + 01	-9.3087E + 01	8.5082E + 01	-3.0962E + 01
S9	-1.8247E-01	2.5446E-01	-7.6532E + 00	4.3903E + 01	-1.2976E + 02	2.3260E + 02	-2.5276E + 02	1.5261E + 02	-3.9173E + 01
S10	3.6778E-01	-9.7315E-01	-8.7115E + 00	5.3348E + 01	-1.3853E + 02	2.0633E + 02	-1.8234E + 02	8.8895E + 01	-1.8407E + 01
S11	7.1608E-01	-4.6239E-01	-1.3333E + 01	7.1155E + 01	-1.8642E + 02	2.9401E + 02	-2.8619E + 02	1.5994E + 02	-3.9597E + 01
S12	-8.7316E-01	9.6999E-01	1.7659E-01	-2.8648E + 00	5.4198E + 00	-5.5748E + 00	3.3814E + 00	-1.1278E + 00	1.5831E-01
S13	-8.4591E-01	6.0800E-01	3.5496E-01	-1.9758E + 00	3.4174E + 00	-3.4846E + 00	2.1687E + 00	-7.5518E-01	1.1221E-01
S14	3.4990E-03	-1.7550E-02	2.9110E-03	2.0900E-03	-6.0000E-04	-3.0000E-04	1.7400E-04	-3.2000E-05	2.1300E-06

Table 20

f1 (mm)	-3.15	f6 (mm)	-24.07
f2 (mm)	37.55	f7 (mm)	-5.66
f3 (mm)	139.17	f (mm)	1.53
f4 (mm)	2.18	TTL (mm)	7.92
f5 (mm)	8.37	HFOV (°)	82.5

Table 21

FIG. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of Example 7, which indicates that light rays with different wavelengths deviate from the focal point after passing through the lens. FIG. 14B shows an astigmatism curve of the optical imaging lens of Example 7, which represents a meridional image plane curvature and a sagittal image plane curvature. FIG. 14C shows a distortion curve of the optical imaging lens of Example 7, which represents the value of the distortion magnitude in the case of different fields of view. FIG. 14D shows a magnification chromatic aberration curve of the optical imaging lens of Example 7, which represents the deviation of light at different image heights on the imaging surface after passing through the lens. As can be seen from FIGS. 14A to 14D, 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 FIGS. 15 to 16D. FIG. 15 is 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 includes, in order from the object side to the image side along the optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, The fifth lens E5, the sixth lens E6, the seventh lens E7, and the imaging surface S15.

The first lens E1 has a negative optical power, and an object side surface S1 thereof is a convex surface, and an image side surface S2 is a concave surface. The second lens E2 has a positive power, and the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive power, and the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface. The fourth lens E4 has a positive power, and the object side surface S7 is a convex surface, and the image side surface S8 is a convex surface. The fifth lens E5 has a positive power, and the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens E6 has a negative power, and the object side surface S11 is a concave surface and the image side surface S12 is a concave surface. The seventh lens E7 has a negative power, and the object side surface S13 is a concave surface, and the image side surface S14 is a concave surface. The light from the object sequentially passes through the surfaces S1 to S14 and is finally imaged on the imaging surface S15. Optionally, an aperture (not shown) may be provided between the third lens E3 and the fourth lens E4 to improve the imaging quality of the lens.

Table 22 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 8, where the units of the radius of curvature and thickness are millimeters (mm). Table 23 shows the higher-order term coefficients that can be used for each aspherical mirror surface in Embodiment 8, where each aspheric surface type can be defined by the formula (1) given in the above Embodiment 1. Table 24 shows the effective focal lengths f1 to f7 of the lenses in Example 8, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side S1 to the imaging surface S15 of the first lens E1, and the maximum half field of view. Angular HFOV.

Table 22

Face number	A4	A6	A8	A10	A12	A14	A16	A18	A20
S1	1.7083E-03	7.5100E-04	-9.0000E-04	3.1300E-04	-6.0000E-05	7.0600E-06	-5.1000E-07	2.0300E-08	-3.5000E-10
S2	2.9549E-02	-2.1529E-01	5.5348E-01	-8.2521E-01	7.6953E-01	-4.5266E-01	1.6309E-01	-3.2840E-02	2.8340E-03
S3	1.9497E-02	-5.7620E-02	-2.2020E-02	1.8263E-01	-5.2655E-01	7.4044E-01	-5.5889E-01	2.2345E-01	-3.7500E-02
S4	6.0513E-02	-3.2968E-01	1.1149E + 00	-3.4592E + 00	6.6269E + 00	-7.7646E + 00	5.5338E + 00	-2.2087E + 00	3.7776E-01
S5	-3.3314E-02	7.4802E-02	-1.0062E + 00	4.3992E + 00	-1.1920E + 01	2.0774E + 01	-2.2381E + 01	1.3482E + 01	-3.5109E + 00
S6	3.6705E-02	-6.9220E-02	3.6284E-01	-1.8814E + 00	6.3218E + 00	-1.2956E + 01	1.6047E + 01	-1.1359E + 01	3.4778E + 00
S7	9.8757E-03	2.2867E-01	-2.0977E + 00	9.7045E + 00	-2.7409E + 01	4.8319E + 01	-5.1810E + 01	3.0922E + 01	-7.8805E + 00
S8	-5.7626E-02	-4.6265E-01	4.7647E + 00	-2.2972E + 01	6.8116E + 01	-1.2496E + 02	1.3780E + 02	-8.3284E + 01	2.1078E + 01
S9	-1.1453E-01	-4.1878E-01	-3.8684E + 00	3.0202E + 01	-9.9828E + 01	1.9720E + 02	-2.3661E + 02	1.5775E + 02	-4.4597E + 01
S10	4.3778E-01	-1.7885E + 00	-3.0019E + 00	2.9196E + 01	-7.6800E + 01	1.1030E + 02	-9.3328E + 01	4.3667E + 01	-8.7064E + 00
S11	7.0628E-01	-5.3290E-01	-1.1851E + 01	6.2579E + 01	-1.6084E + 02	2.4889E + 02	-2.3823E + 02	1.3136E + 02	-3.2248E + 01
S12	-9.4990E-01	1.4064E + 00	-1.6935E + 00	1.5283E + 00	-8.7766E-01	1.2351E-01	1.9240E-01	-1.1668E-01	1.8812E-02
S13	-8.7664E-01	6.4856E-01	3.8527E-01	-2.1645E + 00	3.7958E + 00	-3.9225E + 00	2.4704E + 00	-8.6799E-01	1.2963E-01
S14	-7.0714E-03	-6.0620E-02	8.7286E-02	-6.7700E-02	3.2428E-02	-9.8900E-03	1.8700E-03	-2.0000E-04	9.3300E-06

Table 23

f1 (mm)

-3.00

f6 (mm)

-20.25

f2 (mm)	33.68	f7 (mm)	-6.18
f3 (mm)	143.95	f (mm)	1.49
f4 (mm)	2.19	TTL (mm)	7.95
f5 (mm)	8.95	HFOV (°)	77.5

Table 24

FIG. 16A shows an on-axis chromatic aberration curve of the optical imaging lens of Example 8, which indicates that light rays with different wavelengths deviate from the focal point after passing through the lens. FIG. 16B shows an astigmatism curve of the optical imaging lens of Example 8, which represents a meridional image plane curvature and a sagittal image plane curvature. FIG. 16C shows a distortion curve of the optical imaging lens of Example 8, which represents the value of the distortion magnitude in the case of different fields of view. FIG. 16D shows the magnification chromatic aberration curve of the optical imaging lens of Example 8, which represents the deviation of light at different image heights on the imaging surface after passing through the lens. According to FIG. 16A to FIG. 16D, it can be known that 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 FIGS. 17 to 18D. FIG. 17 is a schematic structural 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 includes, in order from the object side to the image side along the optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, The fifth lens E5, the sixth lens E6, the seventh lens E7, and the imaging surface S15.

The first lens E1 has a negative optical power, and an object side surface S1 thereof is a convex surface, and an image side surface S2 is a concave surface. The second lens E2 has a negative power, and the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive power, and the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface. The fourth lens E4 has a positive power, and the object side surface S7 is a convex surface, and the image side surface S8 is a convex surface. The fifth lens E5 has a negative power, and the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens E6 has a positive power, and the object side surface S11 is a convex surface, and the image side surface S12 is a convex surface. The seventh lens E7 has a negative power, and the object side surface S13 is a concave surface, and the image side surface S14 is a concave surface. The light from the object sequentially passes through the surfaces S1 to S14 and is finally imaged on the imaging surface S15. Optionally, an aperture (not shown) may be provided between the third lens E3 and the fourth lens E4 to improve the imaging quality of the lens.

Table 25 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of Example 9, where the units of the radius of curvature and thickness are millimeters (mm). Table 26 shows the higher-order term coefficients that can be used for each aspherical mirror surface in Embodiment 9, where each aspheric surface type can be defined by the formula (1) given in Embodiment 1 above. Table 27 shows the effective focal lengths f1 to f7 of each lens, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side S1 to the imaging surface S15 of the first lens E1, and the maximum half field of view Angular HFOV.

Table 25

Face number	A4	A6	A8	A10	A12	A14	A16	A18	A20
S1	3.7129E-03	-2.2400E-03	7.5800E-04	-1.7000E-04	2.7700E-05	-2.9000E-06	1.8200E-07	-6.5000E-09	9.7900E-11
S2	5.3639E-02	-2.5949E-01	6.2965E-01	-9.1136E-01	8.2728E-01	-4.7336E-01	1.6633E-01	-3.2850E-02	2.8040E-03
S3	2.5635E-02	-6.4250E-02	5.8672E-02	-1.7449E-01	2.5176E-01	-2.0821E-01	1.0631E-01	-3.0310E-02	3.5880E-03
S4	5.3707E-02	-2.5816E-01	7.1843E-01	-2.5197E + 00	5.1991E + 00	-6.2776E + 00	4.5132E + 00	-1.7997E + 00	3.0673E-01
S5	-2.6949E-02	3.0459E-01	-3.7314E + 00	1.8968E + 01	-5.7347E + 01	1.0708E + 02	-1.2060E + 02	7.4768E + 01	-1.9524E + 01
S6	6.7291E-02	-1.1418E + 00	1.0621E + 01	-5.8035E + 01	2.0037E + 02	-4.3903E + 02	5.9064E + 02	-4.4564E + 02	1.4450E + 02
S7	-1.7931E-02	4.7736E-01	-4.4685E + 00	2.5331E + 01	-8.8380E + 01	1.9045E + 02	-2.4666E + 02	1.7548E + 02	-5.2552E + 01
S8	-6.3702E-02	-5.8986E-01	7.7603E + 00	-4.6967E + 01	1.7225E + 02	-3.9042E + 02	5.3299E + 02	-4.0083E + 02	1.2723E + 02
S9	8.7236E-02	-2.2782E + 00	7.4007E + 00	-1.2531E + 01	2.0552E-01	4.9094E + 01	-1.0375E + 02	9.3084E + 01	-3.1737E + 01
S10	1.0895E-01	-1.5934E + 00	5.6762E + 00	-1.4309E + 01	2.9123E + 01	-4.3494E + 01	4.2330E + 01	-2.3445E + 01	5.5672E + 00
S11	2.2747E-01	-8.9852E-01	1.9413E + 00	-1.6285E + 00	-1.4021E + 00	4.6061E + 00	-4.5159E + 00	2.0869E + 00	-3.8514E-01
S12	-5.2546E-02	-1.5721E-01	6.5082E-01	-1.4134E + 00	2.0044E + 00	-1.9627E + 00	1.2054E + 00	-4.0253E-01	5.5092E-02
S13	-3.1975E-01	3.4890E-01	-2.5106E + 00	8.8878E + 00	-1.7421E + 01	2.0415E + 01	-1.4378E + 01	5.6564E + 00	-9.5630E-01
S14	2.9333E-02	-2.1008E-01	2.5502E-01	-1.8088E-01	8.2984E-02	-2.4940E-02	4.7320E-03	-5.1000E-04	2.4400E-05

Table 26

f1 (mm)	-3.92	f6 (mm)	2.11
f2 (mm)	-29.79	f7 (mm)	-1.77
f3 (mm)	17.86	f (mm)	1.30
f4 (mm)	2.17	TTL (mm)	7.06
f5 (mm)	-24.26	HFOV (°)	83.9

Table 27

FIG. 18A shows an on-axis chromatic aberration curve of the optical imaging lens of Example 9, which indicates that light rays with different wavelengths deviate from the focal point after passing through the lens. FIG. 18B shows an astigmatism curve of the optical imaging lens of Example 9, which represents a meridional image plane curvature and a sagittal image plane curvature. FIG. 18C shows a distortion curve of the optical imaging lens of Example 9, which represents the value of the distortion magnitude under different field of view conditions. FIG. 18D shows the magnification chromatic aberration curve of the optical imaging lens of Example 9, which represents the deviation of light at different image heights on the imaging surface after passing through the lens. According to FIG. 18A to FIG. 18D, it can be known that 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 FIGS. FIG. 19 is 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 includes, in order from the object side to the image side along the optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, The fifth lens E5, the sixth lens E6, the seventh lens E7, and the imaging surface S15.

The first lens E1 has a negative optical power, and an object side surface S1 thereof is a convex surface, and an image side surface S2 is a concave surface. The second lens E2 has a negative power, and the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive power, and the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface. The fourth lens E4 has a positive power, and the object side surface S7 is a convex surface, and the image side surface S8 is a convex surface. The fifth lens E5 has a positive power, and the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens E6 has a positive power, and the object side surface S11 is a convex surface, and the image side surface S12 is a convex surface. The seventh lens E7 has a negative power, and the object side surface S13 is a concave surface, and the image side surface S14 is a concave surface. The light from the object sequentially passes through the surfaces S1 to S14 and is finally imaged on the imaging surface S15. Optionally, an aperture (not shown) may be provided between the third lens E3 and the fourth lens E4 to improve the imaging quality of the lens.

Table 28 shows the surface type, the radius of curvature, the thickness, the material, and the conic coefficient of each lens of the optical imaging lens of Example 10. The units of the radius of curvature and the thickness are both millimeters (mm). Table 29 shows the high-order term coefficients that can be used for each aspherical mirror surface in Embodiment 10, where each aspheric surface type can be defined by the formula (1) given in the above Embodiment 1. Table 30 shows the effective focal lengths f1 to f7 of each lens, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the object side S1 to the imaging surface S15 of the first lens E1 and the maximum half field of view Angular HFOV.

Table 28

Face number	A4	A6	A8	A10	A12	A14	A16	A18	A20
S1	4.8663E-03	-2.5990E-03	8.0600E-04	-1.8000E-04	2.6300E-05	-2.2000E-06	9.0600E-08	-1.8000E-10	-7.1000E-11
S2	2.4408E-02	-6.9751E-02	1.7461E-01	-2.6331E-01	2.5175E-01	-1.5245E-01	5.7015E-02	-1.2040E-02	1.1050E-03
S3	2.5256E-02	-6.1275E-02	5.4969E-02	-1.5734E-01	2.2143E-01	-1.7631E-01	8.4648E-02	-2.1690E-02	2.0910E-03
S4	4.9674E-02	-1.5790E-01	7.3408E-02	-5.1474E-01	1.3194E + 00	-1.5131E + 00	9.4801E-01	-3.2172E-01	4.6521E-02
S5	2.2560E-02	-2.3629E-01	-1.4799E-01	3.0055E + 00	-1.2486E + 01	2.8217E + 01	-3.6263E + 01	2.4618E + 01	-6.8378E + 00
S6	-1.5587E-02	1.4790E-01	-7.9501E-01	5.9589E + 00	-2.7352E + 01	7.6057E + 01	-1.2384E + 02	1.0475E + 02	-3.4715E + 01
S7	-2.3179E-02	4.5746E-01	-5.0150E + 00	3.3935E + 01	-1.3789E + 02	3.3440E + 02	-4.6739E + 02	3.4502E + 02	-1.0385E + 02
S8	-1.9847E-01	5.8818E-02	4.4557E + 00	-4.0839E + 01	2.1099E + 02	-6.5622E + 02	1.2069E + 03	-1.1967E + 03	4.8935E + 02
S9	3.5081E-01	-5.6067E + 00	2.9944E + 01	-1.1489E + 02	3.1435E + 02	-5.8600E + 02	6.9387E + 02	-4.6423E + 02	1.3263E + 02
S10	2.1966E-01	-2.3862E + 00	7.5991E + 00	-1.1645E + 01	5.6029E + 00	8.4822E + 00	-1.4413E + 01	8.0494E + 00	-1.5482E + 00

S11	3.9401E-01	-1.5029E + 00	2.0171E + 00	7.8219E + 00	-4.1934E + 01	8.7046E + 01	-9.6661E + 01	5.6631E + 01	-1.3777E + 01
S12	-3.7375E-02	-1.2478E-01	5.0672E-01	-1.3077E + 00	1.9151E + 00	-1.7288E + 00	9.4938E-01	-2.8703E-01	3.6284E-02
S13	-4.4029E-01	2.1477E-01	-8.5826E-01	3.2973E + 00	-7.2554E + 00	9.3602E + 00	-6.9490E + 00	2.7914E + 00	-4.7772E-01
S14	-1.4668E-01	9.1214E-02	-4.0780E-02	4.2390E-03	7.5700E-03	-5.7800E-03	2.0010E-03	-3.5000E-04	2.4600E-05

Table 29

f1 (mm)	-3.92	f6 (mm)	1.88
f2 (mm)	-19.25	f7 (mm)	-1.36
f3 (mm)	15.00	f (mm)	1.20
f4 (mm)	2.18	TTL (mm)	6.68
f5 (mm)	362.90	HFOV (°)	77.5

Table 30

FIG. 20A shows an on-axis chromatic aberration curve of the optical imaging lens of Example 10, which indicates that light rays with different wavelengths deviate from the focal point after passing through the lens. FIG. 20B shows an astigmatism curve of the optical imaging lens of Example 10, which represents a meridional image plane curvature and a sagittal image plane curvature. FIG. 20C illustrates a distortion curve of the optical imaging lens of Example 10, which represents the value of the distortion magnitude in the case of different fields of view. FIG. 20D shows a magnification chromatic aberration curve of the optical imaging lens of Example 10, which represents the deviation of light at different image heights on the imaging plane after passing through the lens. It can be seen from FIGS. 20A to 20D that the optical imaging lens provided in Embodiment 10 can achieve good imaging quality.

In summary, Examples 1 to 10 satisfy the relationships shown in Table 31, respectively.

Conditional expression / example	1	2	3	4	5	6	7	8	9	10
f1 / f	-2.15	-2.13	-2.08	-2.14	-2.24	-2.04	-2.06	-2.01	-3.02	-3.27
| f / f2 | + | f / f5 |	0.54	0.30	0.33	0.05	0.13	0.16	0.22	0.21	0.10	0.07
f4 / f3	0.05	0.18	0.11	0.01	0.25	0.04	0.02	0.02	0.12	0.15
CT7 / f7	-0.57	-0.62	-0.61	-0.67	-0.62	-0.57	-0.22	-0.20	-0.54	-0.57
R1 / R2	2.65	2.39	2.57	2.38	2.53	2.68	2.46	2.54	2.18	2.18
R3 / R4	0.57	1.13	0.96	0.91	1.41	0.88	0.94	0.93	1.24	1.40
R7 / f	1.30	1.39	1.38	1.26	1.66	1.14	1.29	1.31	1.50	1.59
R14 / R13	-1.21	-1.89	-1.89	-1.85	-1.67	-2.09	-0.08	-0.01	-1.94	-1.39
HFOV (°)	91.0	89.8	73.8	72.5	75.0	78.0	82.5	77.5	83.9	77.5
f / EPD	1.78	1.85	1.85	1.85	1.84	1.83	1.86	1.86	1.85	1.85
T12 / ImgH	1.06	0.97	1.04	1.07	1.10	1.04	1.03	1.04	1.03	1.14
DT11 / DT12	2.03	2.09	2.07	2.08	2.21	2.19	2.01	2.02	2.15	1.92
DT72 / DT71	1.70	1.70	1.69	1.63	1.65	1.69	1.66	1.63	1.84	1.82
CT6 / TTL * 10	1.25	1.21	1.21	1.08	0.96	1.10	1.58	1.57	1.09	0.98

Table 31

The present application also provides an imaging device whose electronic photosensitive element may be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device may be an independent imaging device such as a digital camera or an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

The above description is only a preferred embodiment of the present application and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solution of the specific combination of the above technical features, but should also cover the above technical features without departing from the inventive concept. Or other technical solutions formed by any combination of equivalent features. For example, a technical solution formed by replacing the above features with technical features disclosed in the present application (but not limited to) with similar functions.

Claims (28)

1. The optical imaging lens includes, in order from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens,

   It is characterized by,

   The first lens has a negative power, and the object side is convex and the image side is concave;

   The second lens has an optical power;

   The third lens has a positive power;

   The fourth lens has a positive power;

   The fifth lens has a power;

   The sixth lens has optical power;

   The seventh lens has a negative power, and the object side and the image side are both concave; and

   The effective focal length f1 of the first lens and the total effective focal length f of the optical imaging lens satisfy -3.5 <f1 / f <-2.
2. The optical imaging lens according to claim 1, wherein a total effective focal length f of the optical imaging lens, an effective focal length f2 of the second lens, and an effective focal length f5 of the fifth lens satisfy f / f2 | + | f / f5 | <0.6.
3. The optical imaging lens according to claim 1, wherein an effective focal length f4 of the fourth lens and an effective focal length f3 of the third lens satisfy 0 <f4 / f3 <0.5.
4. The optical imaging lens according to claim 1, wherein the curvature radius R1 of the object side of the first lens and the curvature radius R2 of the image side of the first lens satisfy 2 <R1 / R2 <3.
5. The optical imaging lens according to claim 1, wherein the curvature radius R3 of the object side of the second lens and the curvature radius R4 of the image side of the second lens satisfy 0.5 <R3 / R4 <1.5.
6. The optical imaging lens according to claim 1, wherein a curvature radius R7 of the object side of the fourth lens and a total effective focal length f of the optical imaging lens satisfy 1 <R7 / f <1.8.
7. The optical imaging lens according to claim 1, wherein a curvature radius R14 of an image side of the seventh lens and a curvature radius R13 of an object side of the seventh lens satisfy -2.1 <R14 / R13 <0.
8. The optical imaging lens according to claim 1, wherein a separation distance T12 between the first lens and the second lens on the optical axis and an effective pixel area on an imaging surface of the optical imaging lens ImgH, which is a half of the angular length, satisfies 0.7 <T12 / ImgH <1.2.
9. The optical imaging lens according to claim 1, wherein the center thickness CT6 of the sixth lens on the optical axis and the object-side surface of the first lens to the imaging surface of the optical imaging lens are at The distance TTL on the optical axis satisfies 0.7 <CT6 / TTL * 10 <1.7.
10. The optical imaging lens according to claim 1, wherein a center thickness CT7 of the seventh lens on the optical axis and an effective focal length f7 of the seventh lens satisfy -0.8 <CT7 / f7 <0.
11. The optical imaging lens according to claim 1, wherein the maximum effective half-diameter DT11 of the object side of the first lens and the maximum effective half-diameter DT12 of the image side of the first lens satisfy 1.8 <DT11 / DT12 <2.3.
12. The optical imaging lens according to claim 1, wherein the maximum effective half-diameter DT72 of the image side of the seventh lens and the maximum effective half-diameter DT71 of the object side of the seventh lens satisfy 1.5 <DT72 / DT71 <2.
13. The optical imaging lens according to any one of claims 1 to 12, wherein a maximum half field angle HFOV of the optical imaging lens satisfies 72 ° <HFOV <92 °.
14. The optical imaging lens according to any one of claims 1 to 12, wherein a total effective focal length f of the optical imaging lens and an entrance pupil diameter EPD of the optical imaging lens satisfy f / EPD <2.0.
15. The optical imaging lens includes, in order from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens,

    It is characterized by,

    The first lens has a negative power, and the object side is convex and the image side is concave;

    The second lens has an optical power;

    The third lens has a positive power;

    The fourth lens has a positive power;

    The fifth lens has a power;

    The sixth lens has optical power;

    The seventh lens has a negative power, and the object side and the image side are both concave; and

    The maximum effective half-aperture DT72 of the image side of the seventh lens and the maximum effective half-aperture DT71 of the object side of the seventh lens satisfy 1.5 <DT72 / DT71 <2.
16. The optical imaging lens according to claim 15, wherein the curvature radius R1 of the object side of the first lens and the curvature radius R2 of the image side of the first lens satisfy 2 <R1 / R2 <3.
17. The optical imaging lens according to claim 15, wherein the curvature radius R3 of the object side of the second lens and the curvature radius R4 of the image side of the second lens satisfy 0.5 <R3 / R4 <1.5.
18. The optical imaging lens according to claim 17, wherein a total effective focal length f of the optical imaging lens, an effective focal length f2 of the second lens, and an effective focal length f5 of the fifth lens satisfy | f / f2 | + | f / f5 | <0.6.
19. The optical imaging lens according to claim 15, wherein a curvature radius R7 of the object side of the fourth lens and a total effective focal length f of the optical imaging lens satisfy 1 <R7 / f <1.8.
20. The optical imaging lens according to claim 19, wherein an effective focal length f4 of the fourth lens and an effective focal length f3 of the third lens satisfy 0 <f4 / f3 <0.5.
21. The optical imaging lens according to claim 15, wherein the curvature radius R14 of the image side of the seventh lens and the curvature radius R13 of the object side of the seventh lens satisfy -2.1 <R14 / R13 <0.
22. The optical imaging lens according to claim 21, wherein a center thickness CT7 of the seventh lens on the optical axis and an effective focal length f7 of the seventh lens satisfy -0.8 <CT7 / f7 <0.
23. The optical imaging lens according to claim 15, wherein the maximum effective half-diameter DT11 of the object side of the first lens and the maximum effective half-diameter DT12 of the image side of the first lens satisfy 1.8 <DT11 / DT12 <2.3.
24. The optical imaging lens according to claim 23, wherein an effective focal length f1 of the first lens and a total effective focal length f of the optical imaging lens satisfy -3.5 <f1 / f <-2.
25. The optical imaging lens according to claim 15, wherein a separation distance T12 on the optical axis of the first lens and the second lens is aligned with an effective pixel area on an imaging surface of the optical imaging lens. ImgH, which is a half of the angular length, satisfies 0.7 <T12 / ImgH <1.2.
26. The optical imaging lens according to claim 15, wherein the center thickness CT6 of the sixth lens on the optical axis and the object-side surface of the first lens to the imaging surface of the optical imaging lens are at The distance TTL on the optical axis satisfies 0.7 <CT6 / TTL * 10 <1.7.
27. The optical imaging lens according to any one of claims 15 to 26, wherein a maximum half field angle HFOV of the optical imaging lens satisfies 72 ° <HFOV <92 °.
28. The optical imaging lens according to any one of claims 15 to 26, wherein a total effective focal length f of the optical imaging lens and an entrance pupil diameter EPD of the optical imaging lens satisfy f / EPD <2.0.

Images