Optical imaging lens set

Abstract

The application discloses an optical imaging lens set, which comprises, in sequence 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, a seventh lens and an eighth lens. The first lens has optical power; the second lens has positive optical power; the third lens has optical power, and the image side of the third lens is convex; the fourth lens has negative optical power; the fifth lens has optical power; the sixth lens has optical power, and the object side of the sixth lens is concave, and the image side of the sixth lens is convex; the seventh lens has positive optical power; and the eighth lens has optical power.

Description

[0001] Divisional Application Declaration

[0002] This application is a divisional application of the Chinese Patent Application No. 201811167277.8 filed on October 8, 2018, entitled "Optical Imaging Lens Assembly", the disclosure of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to an optical imaging lens assembly, and more particularly, to an optical imaging lens assembly including eight lenses. BACKGROUND

[0004] In recent years, with the improvement of the requirements for the hardware and software of mobile phones, the imaging quality of the imaging lens mounted on the mobile phone is increasingly required. In addition to the basic parameters such as high pixels and high resolution, the mobile phone lens is increasingly required to have the characteristics of ultra-thin, large aperture and wide field of view. Therefore, the targeted development for these characteristics has become the main concern of the current mobile phone lens design.

[0005] In theory, one of the most efficient methods to improve the imaging quality of an optical system is to add multiple lenses to provide more space and degrees of freedom to find the optimal solution. However, the increase in the number of lenses will lead to an increase in the size of the system, which is contrary to the trend of ultra-thin mobile phone lenses. Therefore, how to improve the imaging quality of the lens while maintaining the ultra-thin lens is an urgent matter to be solved in the field. SUMMARY

[0006] The present application provides an optical imaging lens assembly applicable to portable electronic products, which can at least solve or partially solve at least one of the above-mentioned disadvantages in the prior art.

[0007] In one aspect, the present application provides an optical imaging lens assembly including, 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, a seventh lens, and an eighth lens. The first lens has positive or negative refractive power; the second lens can have positive refractive power; the third lens has positive or negative refractive power, and the image side surface thereof can be convex; the fourth lens can have negative refractive power; the fifth lens has positive or negative refractive power; the sixth lens has positive or negative refractive power, and the object side surface thereof can be concave, and the image side surface thereof can be convex; the seventh lens can have positive refractive power; and the eighth lens has positive or negative refractive power.

[0008] In one embodiment, the object side surface of the second lens can be convex.

[0009] In one embodiment, the image side surface of the fourth lens can be concave.

[0010] In one embodiment, the object side surface of the seventh lens can be convex.

[0011] In one embodiment, the effective focal length f2 of the second lens and the effective focal length f7 of the seventh lens can satisfy 0

[0012] In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f4 of the fourth lens can satisfy -0.8

[0013] In one embodiment, the central thickness CT7 of the seventh lens on the optical axis and the distance TTL from the object side surface of the first lens to the imaging plane of the optical imaging lens on the optical axis can satisfy 1.5

[0014] In one embodiment, the maximum effective radius DT61 of the object side surface of the sixth lens and the maximum effective radius DT71 of the object side surface of the seventh lens can satisfy 0.2

[0015] In one embodiment, the curvature radius R1 of the object side surface of the first lens, the curvature radius R2 of the image side surface of the first lens and the effective focal length f1 of the first lens can satisfy 0

[0016] In one embodiment, the curvature radius R6 of the image side surface of the third lens and the effective focal length f3 of the third lens can satisfy 0

[0017] In one embodiment, the curvature radius R15 of the object side surface of the eighth lens and the curvature radius R16 of the image side surface of the eighth lens can satisfy -0.8

[0018] In one embodiment, the curvature radius R12 of the image side surface of the sixth lens and the curvature radius R11 of the object side surface of the sixth lens can satisfy 0.3

[0019] 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 can satisfy f / EPD<2.0.

[0020] In one embodiment, the maximum half field of view HFOV of the optical imaging lens can satisfy 40°

[0021] In one embodiment, the distance TTL from the object side surface of the first lens to the imaging plane of the optical imaging lens on the optical axis and the half diagonal length ImgH of the effective pixel area on the imaging plane of the optical imaging lens can satisfy TTL / ImgH<1.4.

[0022] In one embodiment, the combined focal length f123456 of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens and the total effective focal length f of the optical imaging lens system can satisfy 1.0 < f123456 / f < 1.5.

[0023] In one embodiment, the interval distance T67 of the sixth lens and the seventh lens on the optical axis and the interval distance T78 of the seventh lens and the eighth lens on the optical axis can satisfy 0.4 < T67 / T78 < 1.0.

[0024] In another aspect, the present application also provides an optical imaging lens system, which comprises, 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, a seventh lens and an eighth lens. The first lens has positive or negative refractive power; the second lens can have positive refractive power; the third lens has positive or negative refractive power; the fourth lens can have negative refractive power; the fifth lens has positive or negative refractive power; the sixth lens has positive or negative refractive power, and the object side surface thereof can be concave and the image side surface thereof can be convex; the seventh lens can have positive refractive power; and the eighth lens has positive or negative refractive power. Wherein the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens system on the optical axis and the half diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens system can satisfy TTL / ImgH < 1.4.

[0025] In another aspect, the present application also provides an optical imaging lens system, which comprises, 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, a seventh lens and an eighth lens. The first lens has positive or negative refractive power; the second lens can have positive refractive power; the third lens has positive or negative refractive power; the fourth lens can have negative refractive power; the fifth lens has positive or negative refractive power; the sixth lens has positive or negative refractive power, and the object side surface thereof can be concave and the image side surface thereof can be convex; the seventh lens can have positive refractive power; and the eighth lens has positive or negative refractive power. Wherein the maximum half field of view HFOV of the optical imaging lens system can satisfy 40° < HFOV < 50°.

[0026] In another aspect, the present application also provides an optical imaging lens set, which comprises, 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, a seventh lens and an eighth lens. The first lens has positive or negative refractive power; the second lens can have positive refractive power; the third lens has positive or negative refractive power; the fourth lens can have negative refractive power; the fifth lens has positive or negative refractive power; the sixth lens has positive or negative refractive power, and the object side surface thereof can be concave and the image side surface thereof can be convex; the seventh lens can have positive refractive power; and the eighth lens has positive or negative refractive power. Wherein the radius of curvature R15 of the object side surface of the eighth lens and the radius of curvature R16 of the image side surface of the eighth lens satisfy -0.8 < R15 / R16 < -0.3.

[0027] In another aspect, the present application also provides an optical imaging lens set, which comprises, 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, a seventh lens and an eighth lens. The first lens has positive or negative refractive power; the second lens can have positive refractive power; the third lens has positive or negative refractive power; the fourth lens can have negative refractive power; the fifth lens has positive or negative refractive power; the sixth lens has positive or negative refractive power, and the object side surface thereof can be concave and the image side surface thereof can be convex; the seventh lens can have positive refractive power; and the eighth lens has positive or negative refractive power. Wherein the maximum effective radius DT61 of the object side surface of the sixth lens and the maximum effective radius DT71 of the object side surface of the seventh lens satisfy 0.2 < DT61 / DT71 < 0.7.

[0028] In another aspect, the present application also provides an optical imaging lens set, which comprises, 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, a seventh lens and an eighth lens. The first lens has positive or negative refractive power; the second lens can have positive refractive power; the third lens has positive or negative refractive power; the fourth lens can have negative refractive power; the fifth lens has positive or negative refractive power; the sixth lens has positive or negative refractive power, and the object side surface thereof can be concave and the image side surface thereof can be convex; the seventh lens can have positive refractive power; and the eighth lens has positive or negative refractive power. Wherein the central thickness CT7 of the seventh lens on the optical axis and the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens set on the optical axis satisfy 1.5 < CT7 / TTL x 10 < 2.5.

[0029] In yet another aspect, the present application also provides an optical imaging lens set comprising, 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, a seventh lens, and an eighth lens. The first lens has positive or negative refractive power; the second lens can have positive refractive power; the third lens has positive or negative refractive power; the fourth lens can have negative refractive power; the fifth lens has positive or negative refractive power; the sixth lens has positive or negative refractive power, and the object side surface thereof can be concave and the image side surface thereof can be convex; the seventh lens can have positive refractive power; and the eighth lens has positive or negative refractive power. Wherein the interval distance T67 of the sixth lens and the seventh lens on the optical axis and the interval distance T78 of the seventh lens and the eighth lens on the optical axis can satisfy 0.4 < T67 / T78 < 1.0.

[0030] The present application adopts eight lenses, and by reasonably allocating the refractive power, surface shape, central thickness of each lens, and axial interval distance between each lens, etc., the optical imaging lens set has at least one of the following beneficial effects: ultra-thin, large light flux, wide imaging range, and miniaturization, etc. BRIEF DESCRIPTION OF DRAWINGS

[0031] 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:

[0032] Figure 1 A structure schematic diagram of an optical imaging lens set according to Embodiment 1 of the present application is shown;

[0033] Figures 2A to 2D Axial chromatic aberration curves, astigmatism curves, distortion curves, and magnification chromatic aberration curves of the optical imaging lens set of Embodiment 1 are shown respectively;

[0034] Figure 3 A structure schematic diagram of an optical imaging lens set according to Embodiment 2 of the present application is shown;

[0035] Figures 4A to 4D Axial chromatic aberration curves, astigmatism curves, distortion curves, and magnification chromatic aberration curves of the optical imaging lens set of Embodiment 2 are shown respectively;

[0036] Figure 5 A structure schematic diagram of an optical imaging lens set according to Embodiment 3 of the present application is shown;

[0037] Figures 6A to 6D Axial chromatic aberration curves, astigmatism curves, distortion curves, and magnification chromatic aberration curves of the optical imaging lens set of Embodiment 3 are shown respectively;

[0038] Figure 7A structural diagram of an optical imaging lens set according to Embodiment 4 of the present application is shown;

[0039] Figures 8A to 8D On-axis chromatic aberration curves, astigmatism curves, distortion curves and magnification chromatic aberration curves of the optical imaging lens set of Embodiment 4 are shown respectively;

[0040] Figure 9 A structural diagram of an optical imaging lens set according to Embodiment 5 of the present application is shown;

[0041] Figures 10A to 10D On-axis chromatic aberration curves, astigmatism curves, distortion curves and magnification chromatic aberration curves of the optical imaging lens set of Embodiment 5 are shown respectively;

[0042] Figure 11 A structural diagram of an optical imaging lens set according to Embodiment 6 of the present application is shown;

[0043] Figures 12A to 12D On-axis chromatic aberration curves, astigmatism curves, distortion curves and magnification chromatic aberration curves of the optical imaging lens set of Embodiment 6 are shown respectively;

[0044] Figure 13 A structural diagram of an optical imaging lens set according to Embodiment 7 of the present application is shown;

[0045] Figures 14A to 14D On-axis chromatic aberration curves, astigmatism curves, distortion curves and magnification chromatic aberration curves of the optical imaging lens set of Embodiment 7 are shown respectively;

[0046] Figure 15 A structural diagram of an optical imaging lens set according to Embodiment 8 of the present application is shown;

[0047] Figures 16A to 16D On-axis chromatic aberration curves, astigmatism curves, distortion curves and magnification chromatic aberration curves of the optical imaging lens set of Embodiment 8 are shown respectively;

[0048] Figure 17 A structural diagram of an optical imaging lens set according to Embodiment 9 of the present application is shown;

[0049] Figures 18A to 18D On-axis chromatic aberration curves, astigmatism curves, distortion curves and magnification chromatic aberration curves of the optical imaging lens set of Embodiment 9 are shown respectively;

[0050] Figure 19 A structural diagram of an optical imaging lens set according to Embodiment 10 of the present application is shown;

[0051] Figures 20A to 20D On-axis chromatic aberration curves, astigmatism curves, distortion curves and magnification chromatic aberration curves of the optical imaging lens set of Embodiment 10 are shown respectively. DETAILED DESCRIPTION

[0052] For a better understanding of the present application, various aspects of the present application will be described in greater detail below with reference to the accompanying drawings. It is to be noted that these detailed description is merely descriptive of exemplary embodiments of the present application and is not intended in any way to limit the scope of the present application. Throughout the specification, like drawing reference numerals will refer to like elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0053] It should be noted that the terms first, second, third, etc. are used herein only to distinguish one feature from another, and do not denote any limitation on the features. Thus, a first lens discussed below can also be called a second lens or a third lens, without departing from the teachings of the present application.

[0054] In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of explanation. 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 merely examples and are not drawn to scale.

[0055] Herein, the paraxial region refers to a region near the optical axis. If a lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region. If a lens surface is concave and the position of the concave surface 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 is called the object side surface of the lens, and the surface of each lens closest to the image plane is called the image side surface of the lens.

[0056] It should also be understood that the words "comprise", "comprising", "include", "including", and / or "contain", 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. In addition, when describing the embodiments of the present application, the use of "may" indicates that one or more embodiments of the present application. Also, the expression "exemplary" is intended to mean example or illustrative.

[0057] 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.

[0058] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0059] The features, principles, and other aspects of the present application are described in detail below.

[0060] The optical imaging lens set according to the exemplary embodiments of the present application can include, for example, eight lenses with optical power, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The eight lenses are arranged in order along an optical axis from an object side to an image side, and each adjacent lenses can have an air gap therebetween.

[0061] In the exemplary embodiments, the first lens has positive optical power or negative optical power; the second lens can have positive optical power; the third lens has positive optical power or negative optical power, and the image side surface thereof can be convex; the fourth lens can have negative optical power; the fifth lens has positive optical power or negative optical power; the sixth lens has positive optical power or negative optical power, and the object side surface thereof can be concave and the image side surface thereof can be convex; the seventh lens can have positive optical power; and the eighth lens has positive optical power or negative optical power. By setting the second lens to have positive optical power, the ability of the lens set to correct aberration can be effectively improved, and the sensitivity of the system can be reduced. Further, the combination of the negative optical power of the fourth lens and the positive optical power of the seventh lens will be conducive to the power distribution of the entire lens set, avoid excessive concentration of optical power, and help balance the sagittal chromatic aberration and the lateral chromatic aberration of the lens set. Designing the image side surface of the third lens to be convex can effectively cooperate with the first lens and the second lens to reduce the spherical aberration of the system and improve the aberration correction ability of the system. Designing the sixth lens to have a concave-convex structure can help expand the imaging range of the system, increase the image height, and achieve the characteristics of high image height of the system.

[0062] In the exemplary embodiments, the object side surface of the first lens can be convex, and the image side surface thereof can be concave.

[0063] In the exemplary embodiments, the object side surface of the second lens can be convex. By designing the object side surface of the second lens to be convex, the second lens can bear positive optical power, and the aberration of the entire system can be effectively reduced, the sensitivity of the system can be reduced, the yield of the system can be improved, and the subsequent processing and assembly of the structure are also facilitated.

[0064] In exemplary embodiments, the image-side surface of the fourth lens can be concave. Designing the image-side surface of the fourth lens as concave enables the fourth lens to assume negative power, which helps to improve the aberration correction capability of the system.

[0065] In exemplary embodiments, the object-side surface of the seventh lens can be convex. Designing the object-side surface of the seventh lens as convex enables the seventh lens to assume a certain degree of positive power and share part of the power of the system to avoid excessive concentration of power.

[0066] In exemplary embodiments, the eighth lens can have negative power, and both the object-side surface and the image-side surface thereof can be concave.

[0067] In exemplary embodiments, the optical imaging lens assembly of the present application can satisfy the condition f / EPD < 2.0, where f is the total effective focal length of the optical imaging lens assembly, and EPD is the entrance pupil diameter of the optical imaging lens assembly. More specifically, f and EPD can further satisfy 1.6 < f / EPD < 2.0, for example, 1.70 < f / EPD < 1.98. Controlling to satisfy the condition f / EPD < 2.0 can effectively increase the amount of light passing through the lens per unit time, make the lens have a higher relative luminance, and better improve the imaging quality of the lens in a darker environment, making the lens more practical.

[0068] In exemplary embodiments, the optical imaging lens assembly of the present application can satisfy the condition 40° < HFOV < 50°, where HFOV is the maximum half field of view of the optical imaging lens assembly. More specifically, HFOV can further satisfy 43° < HFOV < 48°, for example, 45.2° < HFOV < 47.1°. By adjusting the field of view of the system, the imaging height of the system can be improved while avoiding excessive aberration at the edge of the field of view, which helps to better achieve the characteristics of wide imaging range and high imaging quality of the system.

[0069] In exemplary embodiments, the optical imaging lens assembly of the present application can satisfy the condition 0 < f2 / f7 < 0.8, where f2 is the effective focal length of the second lens, and f7 is the effective focal length of the seventh lens. More specifically, f2 and f7 can further satisfy 0.25 < f2 / f7 < 0.59. By reasonably adjusting the effective focal lengths of the second lens and the seventh lens, the first effect is that the power of the lens assembly is more reasonably distributed, so as not to be excessively concentrated on the seventh lens, which is conducive to improving the imaging quality of the system and reducing the sensitivity of the system; the second effect is to effectively maintain the ultra-thin characteristics of the lens assembly.

[0070] In exemplary embodiments, the optical imaging lens assembly of the present application can satisfy the condition formula -0.8 < f / f4 < 0, where f is the total effective focal length of the optical imaging lens assembly, and f4 is the effective focal length of the fourth lens. More specifically, f and f4 can further satisfy -0.64 < f / f4 < -0.19. By reasonably controlling the ratio of the total effective focal length of the lens assembly to the effective focal length of the fourth lens, the contribution of the spherical aberration of the fourth lens can be controlled within a reasonable range, so as to make the on-axis field region of the optical system have better imaging quality.

[0071] In exemplary embodiments, the optical imaging lens assembly of the present application can satisfy the condition formula 0 < (R1+R2) / |f1| < 0.5, where R1 is the curvature radius of the object side surface of the first lens, R2 is the curvature radius of the image side surface of the first lens, and f1 is the effective focal length of the first lens. More specifically, R1, R2 and f1 can further satisfy 0 < (R1+R2) / |f1| < 0.1, for example, 0.03 < (R1+R2) / |f1| < 0.08. Reasonably controlling the curvature radii of the object side surface and the image side surface of the first lens and the effective focal length thereof can effectively reduce the system size, and can reasonably distribute the system power to avoid excessive concentration on the first lens, while also being beneficial to correcting the aberration of the rear-end lens, and being beneficial to maintaining good process machinability of the first lens.

[0072] In exemplary embodiments, the optical imaging lens assembly of the present application can satisfy the condition formula 0 < |R6 / f3| < 0.8, where R6 is the curvature radius of the image side surface of the third lens, and f3 is the effective focal length of the third lens. More specifically, R6 and f3 can further satisfy 0.17 < |R6 / f3| < 0.61. By reasonably controlling the curvature radius of the image side surface of the third lens and the effective focal length thereof, the contributions of the astigmatism and coma of the third lens can be controlled within a reasonable range, and the residual astigmatism and coma of the front-end lens can be effectively balanced, so as to make the lens assembly have better imaging quality.

[0073] In exemplary embodiments, the optical imaging lens assembly of the present application can satisfy the condition formula TTL / ImgH < 1.4, where TTL is the distance on the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging lens assembly, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens assembly. More specifically, TTL and ImgH can further satisfy 1.0 < TTL / ImgH < 1.4, for example, 1.27 < TTL / ImgH < 1.35. Satisfying the condition formula TTL / ImgH < 1.4 can effectively reduce the total size of the lens assembly, realize the ultra-thin characteristics and miniaturization of the lens assembly, so as to make the lens assembly better adapted to ultra-thin portable electronic products.

[0074] In exemplary embodiments, the optical imaging lens assembly of the present application can satisfy the condition formula 0.3 < R12 / R11 < 1.3, wherein R12 is the curvature radius of the image side surface of the sixth lens, and R11 is the curvature radius of the object side surface of the sixth lens. More specifically, R12 and R11 can further satisfy 0.54 ≤ R12 / R11 ≤ 1.14. By reasonably distributing the curvature radii of the object side surface and the image side surface of the sixth lens, the astigmatism and coma between the sixth lens and the front end lens can be effectively balanced, so that the lens can have better imaging quality.

[0075] In exemplary embodiments, the optical imaging lens assembly of the present application can satisfy the condition formula -0.8 < R15 / R16 < -0.3, wherein R15 is the curvature radius of the object side surface of the eighth lens, and R16 is the curvature radius of the image side surface of the eighth lens. More specifically, R15 and R16 can further satisfy -0.71 ≤ R15 / R16 ≤ -0.41. By reasonably distributing the curvature radii of the object side surface and the image side surface of the eighth lens, the astigmatism and coma between the eighth lens and the front end lens can be effectively balanced, and the convex surface of the object side of the seventh lens can make the lens maintain better imaging quality, while at the same time facilitating the increase of the image height of the lens assembly on the imaging surface.

[0076] In exemplary embodiments, the optical imaging lens assembly of the present application can satisfy the condition formula 0.2 < DT61 / DT71 < 0.7, wherein DT61 is the maximum effective radius of the object side surface of the sixth lens, and DT71 is the maximum effective radius of the object side surface of the seventh lens. More specifically, DT61 and DT71 can further satisfy 0.35 ≤ DT61 / DT71 ≤ 0.65, for example, 0.50 ≤ DT61 / DT71 ≤ 0.64. By reasonably controlling the effective radius of the object side surface of the sixth lens and the effective radius of the object side surface of the seventh lens, the light flux of the lens assembly can be effectively increased, and the relative luminance of the edge field of view of the system can be increased, so that the system can still have good imaging quality in a relatively dark environment.

[0077] In exemplary embodiments, the optical imaging lens assembly of the present application can satisfy the condition formula 1.5 < CT7 / TTL x 10 < 2.5, wherein CT7 is the center thickness of the seventh lens on the optical axis, and TTL is the distance from the object side surface of the first lens to the imaging surface of the optical imaging lens assembly on the optical axis. More specifically, CT7 and TTL can further satisfy 1.74 ≤ CT7 / TTL x 10 ≤ 2.27. Reasonably controlling the center thickness of the seventh lens on the optical axis facilitates the miniaturization of the system, and also reduces the risk of ghost image generation; at the same time, cooperating with the fifth lens and the sixth lens can effectively reduce the chromatic aberration of the system, and also avoid the performance degradation of the system due to the excessive thinness of the seventh lens.

[0078] In exemplary embodiments, the optical imaging lens set of the present application can satisfy the condition formula 1.0 < f123456 / f < 1.5, where f123456 is the combined focal length of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens, and f is the total effective focal length of the optical imaging lens set. More specifically, f123456 and f can further satisfy 1.03≤f123456 / f≤1.20. By reasonably adjusting the ratio of the combined focal length of the first lens to the sixth lens to the total focal length of the optical system, the optical power of the system is more distributed on the first lens to the sixth lens, which can better improve the aberration correction ability of the system, and at the same time, the size of the lens set can be effectively reduced to maintain the ultra-thin characteristics.

[0079] In exemplary embodiments, the optical imaging lens set of the present application can satisfy the condition formula 0.4 < T67 / T78 < 1.0, where T67 is the interval distance of the sixth lens and the seventh lens on the optical axis, and T78 is the interval distance of the seventh lens and the eighth lens on the optical axis. More specifically, T67 and T78 can further satisfy 0.47≤T67 / T78≤0.91. By reasonably controlling the interval distance between the sixth lens and the seventh lens and the interval distance between the seventh lens and the eighth lens, the risk of ghost image generated by the system can be effectively reduced, and the size of the lens set can be compressed.

[0080] In exemplary embodiments, the above-mentioned optical imaging lens set can further include at least one diaphragm to improve the imaging quality of the optical imaging lens set. Optionally, the diaphragm can be arranged between the object side and the first lens.

[0081] Optionally, the above-mentioned optical imaging lens set can further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging surface.

[0082] The optical imaging lens set according to the above-mentioned embodiments of the present application can adopt multiple lenses, for example, eight lenses as described above. By reasonably distributing the optical power, surface shape, central thickness of each lens, and axial interval distance between each lens, etc., the volume of the optical imaging lens set can be effectively reduced, the sensitivity of the optical imaging lens set can be reduced, and the processability of the optical imaging lens set can be improved, so that the optical imaging lens set is more conducive to production and processing and can be applied to portable electronic products. The optical imaging lens set configured as described above can also have the beneficial effects of being ultra-thin, large-aperture, large field of view, and high imaging quality.

[0083] In the embodiments of the present application, at least one of the mirror surfaces 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, the fifth lens, the sixth lens, the seventh lens and the eighth lens is aspherical. The aspherical lens is characterized in that the curvature is continuously changed from the center of the lens to the periphery of the lens. Unlike the spherical lens having a constant curvature from the center of the lens to the periphery of the lens, the aspherical lens has a better curvature radius characteristic, and has the advantages of improving the distortion aberration and improving the astigmatism aberration. After the aspherical lens is used, the aberration occurring during imaging can be eliminated as much as possible, thereby improving the imaging quality. Alternatively, the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens can be aspherical.

[0084] However, those skilled in the art should understand that the number of lenses constituting the optical imaging lens set can be changed without departing from the technical solutions claimed by the present application, to obtain the various results and advantages described in the present specification. For example, although eight lenses are described as an example in the embodiments, the optical imaging lens set is not limited to including eight lenses. If necessary, the optical imaging lens set can also include other numbers of lenses.

[0085] The specific embodiments of the optical imaging lens set applicable to the above-described embodiments are further described below with reference to the accompanying drawings.

[0086] Example 1

[0087] The following refers to Figures 1 to 2D The optical imaging lens set according to Embodiment 1 of the present application is described. Figure 1 The structural schematic diagram of the optical imaging lens set according to Embodiment 1 of the present application is shown.

[0088] As Figure 1 shown, the optical imaging lens set according to the exemplary embodiments of the present application includes, in order from the object side to the image side along the optical axis, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0089] The first lens E1 has negative power, with a convex object side surface S1 and a concave image side surface S2. The second lens E2 has positive power, with a convex object side surface S3 and a convex image side surface S4. The third lens E3 has positive power, with a concave object side surface S5 and a convex image side surface S6. The fourth lens E4 has negative power, with a concave object side surface S7 and a concave image side surface S8. The fifth lens E5 has positive power, with a convex object side surface S9 and a convex image side surface S10. The sixth lens E6 has negative power, with a concave object side surface S11 and a convex image side surface S12. The seventh lens E7 has positive power, with a convex object side surface S13 and a concave image side surface S14. The eighth lens E8 has negative power, with a concave object side surface S15 and a concave image side surface S16. The filter E9 has an object side surface S17 and an image side surface S18. Light from an object passes through the surfaces S1 to S18 in sequence and is ultimately imaged on an image plane S19.

[0090] Table 1 shows the surface type, radius of curvature, thickness, material and conic constant of each lens of the optical imaging lens set of Example 1, wherein the units of the radius of curvature and thickness are millimeters (mm).

[0091]

[0092]

[0093] Table 1

[0094] As can be seen from Table 1, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical surfaces. In this embodiment, the surface type x of each aspherical lens can be defined by, but not limited to, the following aspherical equation:

[0095]

[0096] wherein x is the sag of the aspherical surface at a height h along the optical axis from the vertex of the aspherical surface; c is the paraxial curvature of the aspherical surface, c = 1 / R (i.e., the paraxial curvature c is the inverse of the radius of curvature R in Table 1); k is the conic constant (given in Table 1); and Ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below gives the high order coefficients A4, A6, A8, A10 and A12 that can be used for each aspherical surface S1-S16 in Example 1. 10 12 14 16 18 20

[0097] Surface No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -5.4500E-02 -4.6660E-02 1.2747E-01 -4.3541E-01 8.4064E-01 -9.9804E-01 7.2113E-01 -2.9114E-01 5.0495E-02 S2 -6.7070E-02 -5.4610E-02 1.4375E-01 -4.6224E-01 8.3661E-01 -9.1248E-01 5.8514E-01 -2.0156E-01 2.8596E-02 S3 -1.0860E-02 9.4760E-03 -4.9330E-02 2.2994E-01 -5.8281E-01 8.6445E-01 -7.4452E-01 3.4291E-01 -6.4960E-02 S4 -1.5280E-02 -4.6100E-03 -1.6390E-02 1.7322E-01 -4.7988E-01 7.2006E-01 -6.1594E-01 2.8557E-01 -5.5680E-02 S5 -1.9710E-02 1.5441E-02 1.0452E-02 3.7620E-02 -1.7848E-01 3.5657E-01 -3.7767E-01 2.1131E-01 -4.8910E-02 S6 1.8448E-02 9.8160E-03 9.3870E-03 1.6320E-02 -5.6520E-02 1.1044E-01 -1.3036E-01 8.5067E-02 -2.2880E-02 S7 5.8308E-02 -2.8720E-02 -1.9230E-02 1.0309E-01 -2.0714E-01 2.5153E-01 -1.8914E-01 8.0124E-02 -1.4370E-02 S8 3.3071E-02 -1.9040E-02 2.1725E-02 -4.7870E-02 8.4561E-02 -9.1390E-02 5.7625E-02 -1.9410E-02 2.7050E-03 S9 -5.9090E-02 4.3262E-02 -1.7856E-01 5.1289E-01 -8.6894E-01 9.0597E-01 -5.6671E-01 1.9633E-01 -2.9220E-02 S10 -5.7230E-02 3.1872E-02 -2.1874E-01 5.7316E-01 -8.6593E-01 7.8573E-01 -4.2650E-01 1.2878E-01 -1.6770E-02 S11 5.6190E-02 -1.3510E-02 -6.9890E-02 2.0031E-01 -2.4822E-01 1.5315E-01 -4.2910E-02 1.6960E-03 1.0250E-03 S12 3.6697E-02 -8.9500E-03 2.2000E-02 1.8420E-03 -2.3500E-02 2.3536E-02 -1.1780E-02 3.1050E-03 -3.4000E-04 S13 -3.1420E-02 9.9980E-03 -5.1900E-03 1.9100E-03 -5.8000E-04 1.3700E-04 -2.2000E-05 1.9500E-06 -7.7000E-08 S14 -1.6300E-03 2.2580E-03 -1.4000E-03 3.2500E-04 -4.2000E-05 3.0600E-06 -1.2000E-07 1.8200E-09 1.8700E-12 S15 2.1280E-03 3.3090E-03 -1.0300E-03 3.3100E-04 -7.4000E-05 9.7500E-06 -7.3000E-07 2.8700E-08 -4.6000E-10 S16 -9.9800E-03 -4.1000E-04 3.8300E-04 -8.7000E-05 1.0600E-05 -7.0000E-07 1.9500E-08 9.6000E-11 -1.1000E-11

[0098] Table 2 ​​​​​​

[0099] Table 3 gives the effective focal lengths f1 to f8 of the respective lenses, the total effective focal length f of the optical imaging lens set, the total track length TTL (i.e. the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S19), half of the diagonal length of the effective pixel area on the imaging surface S19 ImgH, and the maximum half field angle HFOV of the optical imaging lens set in Example 1.

[0100] f1 (mm) -49.32 f7 (mm) 10.36 f2 (mm) 4.07 f8 (mm) -3.62 f3 (mm) 10.87 f (mm) 4.25 f4 (mm) -6.77 TTL (mm) 5.76 f5 (mm) 17.29 ImgH (mm) 4.28 f6 (mm) -98.16 HFOV (°) 45.2

[0101] Table 3

[0102] The optical imaging lens set in Example 1 satisfies:

[0103] f / EPD = 1.98, where f is the total effective focal length of the optical imaging lens set, and EPD is the entrance pupil diameter of the optical imaging lens set;

[0104] f2 / f7 = 0.39, where f2 is the effective focal length of the second lens E2, and f7 is the effective focal length of the seventh lens E7;

[0105] f / f4 = -0.63, where f is the total effective focal length of the optical imaging lens set, and f4 is the effective focal length of the fourth lens E4;

[0106] (R1+R2) / |f1| = 0.08, where R1 is the radius of curvature of the object side surface S1 of the first lens E1, R2 is the radius of curvature of the image side surface S2 of the first lens E1, and f1 is the effective focal length of the first lens E1;

[0107] |f3 / R6| = 0.37, where R6 is the radius of curvature of the image side surface of the third lens E3, and f3 is the effective focal length of the third lens E3;

[0108] TTL / ImgH = 1.35, where TTL is the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S19, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface S19 of the optical imaging lens set;

[0109] R12 / R11 = 1.08, where R12 is the radius of curvature of the image side surface of the sixth lens E6, and R11 is the radius of curvature of the object side surface of the sixth lens E6;

[0110] R15 / R16 = -0.48, where R15 is the radius of curvature of the object side surface S15 of the eighth lens E8, and R16 is the radius of curvature of the image side surface S16 of the eighth lens E8;

[0111] DT61 / DT71 = 0.56, where DT61 is the maximum effective radius of the object side surface S11 of the sixth lens E6, and DT71 is the maximum effective radius of the object side surface S13 of the seventh lens E7;

[0112] CT7 / TTL x 10 = 2.25, where CT7 is the center thickness of the seventh lens E7 on the optical axis, and TTL is the distance from the object side surface S1 of the first lens E1 to the imaging plane S19 on the optical axis;

[0113] f123456 / f = 1.18, where f123456 is the combined focal length of the first lens E1, the second lens E2, the third lens E3, the fourth lens E4, the fifth lens E5 and the sixth lens E6, and f is the total effective focal length of the optical imaging lens;

[0114] T67 / T78 = 0.49, where T67 is the interval distance between the sixth lens E6 and the seventh lens E7 on the optical axis, and T78 is the interval distance between the seventh lens E7 and the eighth lens E8 on the optical axis.

[0115] Figure 2A An on-axis chromatic aberration curve of the optical imaging lens according to Embodiment 1 is shown, which represents the convergence point deviation of light rays of different wavelengths after passing through the optical imaging lens. Figure 2B An astigmatism curve of the optical imaging lens according to Embodiment 1 is shown, which represents the meridional image curvature and sagittal image curvature. Figure 2C A distortion curve of the optical imaging lens according to Embodiment 1 is shown, which represents the distortion size values corresponding to different image heights. Figure 2D A lateral chromatic aberration curve of the optical imaging lens according to Embodiment 1 is shown, which represents the deviation of different image heights on the imaging plane after the light rays pass through the optical imaging lens. According to Figures 2A to 2D It can be seen that the optical imaging lens according to Embodiment 1 can achieve good imaging quality.

[0116] Example 2

[0117] The following refers to Figures 3 to 4D An optical imaging lens according to Embodiment 2 of the present application is described. In this embodiment and the following embodiments, some descriptions similar to Embodiment 1 will be omitted for brevity. Figure 3 A structure diagram of the optical imaging lens according to Embodiment 2 of the present application is shown.

[0118] As Figure 3As shown, the optical imaging lens set according to the exemplary embodiment of the present application comprises, along the optical axis from the object side to the image side, in order: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.

[0119] The first lens E1 has positive refractive power, with a convex object side surface S1 and a concave image side surface S2. The second lens E2 has positive refractive power, with a convex object side surface S3 and a convex image side surface S4. The third lens E3 has positive refractive power, with a concave object side surface S5 and a convex image side surface S6. The fourth lens E4 has negative refractive power, with a concave object side surface S7 and a concave image side surface S8. The fifth lens E5 has positive refractive power, with a concave object side surface S9 and a convex image side surface S10. The sixth lens E6 has positive refractive power, with a concave object side surface S11 and a convex image side surface S12. The seventh lens E7 has positive refractive power, with a convex object side surface S13 and a concave image side surface S14. The eighth lens E8 has negative refractive power, with a concave object side surface S15 and a concave image side surface S16. The filter E9 has an object side surface S17 and an image side surface S18. Light from an object passes through the surfaces S1 to S18 in order and is ultimately imaged on the imaging surface S19.

[0120] Table 4 shows the surface type, radius of curvature, thickness, material, and conic constant of each lens of the optical imaging lens set of Example 2, wherein the units of the radius of curvature and the thickness are millimeters (mm).

[0121]

[0122] Table 4

[0123] As can be seen from Table 4, in Example 2, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical surfaces. Table 5 shows the high-order term coefficients of the aspherical surfaces that can be used in Example 2, wherein each aspherical surface type can be defined by the formula (1) given in Example 1 above.

[0124]

[0125]

[0126] Table 5

[0127] Table 6 gives the effective focal lengths f1 to f8 of each lens of the optical imaging lens set of Example 2, the total effective focal length f of the optical imaging lens set, the total optical length TTL, half of the diagonal length of the effective pixel area on the imaging surface S19 ImgH, and the maximum half field of view HFOV.

[0128] f1 (mm) 100.00 f7 (mm) 12.83 f2 (mm) 4.51 f8 (mm) -3.69 f3 (mm) 11.12 f (mm) 4.25 f4 (mm) -6.59 TTL (mm) 5.71 f5 (mm) 17.66 ImgH (mm) 4.28 f6 (mm) 100.00 HFOV (°) 45.2

[0129] Table 6

[0130] Figure 4A The on-axis chromatic aberration curve of the optical imaging lens set of Example 2 is shown, which represents the convergence point deviation of light rays of different wavelengths after passing through the optical imaging lens set. Figure 4B The astigmatism curve of the optical imaging lens set of Example 2 is shown, which represents the meridional image curvature and sagittal image curvature. Figure 4C The distortion curve of the optical imaging lens set of Example 2 is shown, which represents the distortion size values corresponding to different image heights. Figure 4D The magnification chromatic aberration curve of the optical imaging lens set of Example 2 is shown, which represents the deviation of different image heights on the imaging plane after the light rays pass through the optical imaging lens set. According to Figures 4A to 4D It can be seen that the optical imaging lens set given in Example 2 can achieve good imaging quality.

[0131] Example 3

[0132] The following refers to Figures 5 to 6D An optical imaging lens set according to Example 3 of the present application is described. Figure 5 A structural schematic diagram of the optical imaging lens set according to Example 3 of the present application is shown.

[0133] As Figure 5 shown, the optical imaging lens set according to the exemplary embodiments of the present application sequentially includes, along the optical axis from the object side to the image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging plane S19.

[0134] The first lens E1 has a negative refractive power, the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has a positive refractive power, 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 refractive power, 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 negative refractive power, the object side surface S7 is a concave surface, and the image side surface S8 is a concave surface. The fifth lens E5 has a positive refractive power, 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 refractive power, 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 positive refractive power, the object side surface S13 is a convex surface, and the image side surface S14 is a concave surface. The eighth lens E8 has a negative refractive power, the object side surface S15 is a concave surface, and the image side surface S16 is a concave surface. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through each surface S1 to S18 and is finally imaged on the imaging plane S19.

[0135] Table 7 shows the surface type, curvature radius, thickness, material and conic coefficient of each lens of the optical imaging lens set of Example 3, wherein the units of curvature radius and thickness are both millimeters (mm).

[0136]

[0137]

[0138] Table 7

[0139] As can be seen from Table 7, in Example 3, both the object-side surface and the image-side surface of any of the first lens element E1 through the eighth lens element E8 are aspherical surfaces. Table 8 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 3, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0140] Surface No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -4.5230E-02 -5.6260E-02 1.8918E-01 -5.9134E-01 1.0794E+00 -1.2305E+00 8.5267E-01 -3.2850E-01 5.4057E-02 S2 -6.2350E-02 -5.6020E-02 1.5705E-01 -4.5712E-01 7.5122E-01 -7.6438E-01 4.5738E-01 -1.4632E-01 1.9304E-02 S3 -1.3690E-02 2.1757E-02 -1.1893E-01 4.5093E-01 -9.4046E-01 1.1768E+00 -8.7630E-01 3.5631E-01 -6.0430E-02 S4 -1.8160E-02 -3.9300E-03 -1.5800E-02 1.7441E-01 -4.7863E-01 7.2071E-01 -6.1594E-01 2.8557E-01 -5.5680E-02 S5 -2.1700E-02 1.7990E-02 1.1093E-02 3.7833E-02 -1.7777E-01 3.5779E-01 -3.7767E-01 2.1131E-01 -4.8910E-02 S6 1.0509E-02 6.9360E-03 1.1525E-02 1.8411E-02 -5.5310E-02 1.1108E-01 -1.3036E-01 8.5067E-02 -2.2880E-02 S7 4.5155E-02 -2.3840E-02 -4.0580E-02 1.4165E-01 -2.4283E-01 2.7044E-01 -1.9301E-01 7.8922E-02 -1.3790E-02 S8 3.2049E-02 -1.8530E-02 2.2331E-02 -4.7460E-02 8.4758E-02 -9.1300E-02 5.7480E-02 -1.9410E-02 2.7050E-03 S9 -6.1340E-02 4.3988E-02 -1.7798E-01 5.1316E-01 -8.6886E-01 9.0599E-01 -5.6671E-01 1.9633E-01 -2.9220E-02 S10 -5.7890E-02 3.0388E-02 -2.1952E-01 5.7293E-01 -8.6601E-01 7.8570E-01 -4.2646E-01 1.2878E-01 -1.6770E-02 S11 5.1723E-02 -1.5580E-02 -7.0620E-02 2.0000E-01 -2.4837E-01 1.5305E-01 -4.2980E-02 1.6960E-03 1.0250E-03 S12 4.1843E-02 -1.2120E-02 1.9499E-02 6.0270E-03 -2.4670E-02 2.2959E-02 -1.1850E-02 3.3760E-03 -4.0000E-04 S13 -1.9600E-02 1.4720E-03 -2.4000E-04 -3.4000E-04 1.9800E-04 -5.0000E-05 7.0100E-06 -5.2000E-07 1.5700E-08 S14 3.5170E-03 -6.5000E-04 -9.2000E-04 3.2900E-04 -5.5000E-05 5.1700E-06 -2.8000E-07 7.5500E-09 -8.1000E-11 S15 1.7050E-03 2.9230E-03 -9.0000E-04 2.9600E-04 -6.5000E-05 8.4500E-06 -6.2000E-07 2.3900E-08 -3.8000E-10 S16 -1.3070E-02 2.7600E-05 4.1700E-04 -1.2000E-04 2.0400E-05 -2.0000E-06 1.1300E-07 -3.4000E-09 4.1400E-11

[0141] Table 8

[0142] Table 9 gives the effective focal lengths f1 to f8 of each lens of the optical imaging lens group in Example 3, the total effective focal length f of the optical imaging lens group, the total optical length TTL, half the diagonal length of the effective pixel area on the imaging surface S19 ImgH, and the maximum half field of view HFOV.

[0143] f1 (mm) -60.39 f7 (mm) 12.30 f2 (mm) 4.29 f8 (mm) -3.61 f3 (mm) 11.46 f (mm) 4.25 f4 (mm) -7.80 TTL (mm) 5.65 f5 (mm) 21.37 ImgH (mm) 4.28 f6 (mm) 67.29 HFOV (°) 45.2

[0144] Table 9

[0145] Figure 6A The axial chromatic aberration curve of the optical imaging lens assembly of Example 3 is shown, which indicates the deviation of the focal point of light of different wavelengths after passing through the optical imaging lens assembly. Figure 6B The astigmatism curve of the optical imaging lens group of Example 3 is shown, which represents the meridional field curvature and the sagittal field curvature. Figure 6C The distortion curve of the optical imaging lens assembly of Example 3 is shown, which represents the distortion magnitude values ​​corresponding to different image heights. Figure 6D The chromatic aberration curve of the optical imaging lens set of Example 3 is shown, which represents the deviation of different image heights on the imaging surface after the light passes through the optical imaging lens set. Figures 6A to 6D It can be seen that the optical imaging lens assembly provided in Example 3 can achieve good imaging quality.

[0146] Example 4

[0147] The following reference Figures 7 to 8D An optical imaging lens set according to Example 4 of the present application is described. Figure 7A schematic structural diagram of an optical imaging lens assembly according to Example 4 of the present application is shown.

[0148] like Figure 7 As shown, the optical imaging lens group according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0149] The first lens E1 has positive focal power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive focal power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has positive focal power, with its object-side surface S5 being convex and its image-side surface S6 being convex. The fourth lens E4 has negative focal power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has positive focal power, with its object-side surface S9 being convex and its image-side surface S10 being convex. The sixth lens E6 has negative focal power, with its object-side surface S11 being concave and its image-side surface S12 being convex. The seventh lens E7 has positive focal power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The eighth lens E8 has negative focal power, with its object-side surface S15 being concave and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0150] Table 10 shows the surface type, curvature radius, thickness, material and conic coefficient of each lens of the optical imaging lens set of Example 4, wherein the units of curvature radius and thickness are both millimeters (mm).

[0151]

[0152]

[0153] Table 10

[0154] As can be seen from Table 10, in Example 4, both the object-side surface and the image-side surface of any of the first lens element E1 through the eighth lens element E8 are aspherical surfaces. Table 11 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 4, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0155] Surface No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -3.6560E-02 -1.5700E-02 4.3990E-03 -5.3310E-02 6.6622E-02 -5.4020E-02 2.2778E-02 -1.6900E-03 -9.1000E-04 S2 -4.8750E-02 -1.9350E-02 3.9711E-02 -9.7800E-02 9.9100E-03 1.6957E-01 -2.5932E-01 1.6181E-01 -3.7230E-02 S3 -2.4210E-02 3.9529E-02 -1.3357E-01 4.5993E-01 -9.0546E-01 1.1152E+00 -8.4463E-01 3.5557E-01 -6.2830E-02 S4 -3.1290E-02 -2.0000E-04 -1.3970E-02 1.7583E-01 -4.7791E-01 7.2073E-01 -6.1594E-01 2.8557E-01 -5.5680E-02 S5 -3.7520E-02 1.5132E-02 1.0012E-02 3.6499E-02 -1.7825E-01 3.5827E-01 -3.7767E-01 2.1131E-01 -4.8910E-02 S6 -2.4100E-03 -2.5900E-03 1.0825E-02 1.9414E-02 -5.4960E-02 1.1070E-01 -1.3036E-01 8.5067E-02 -2.2880E-02 S7 2.3151E-02 -6.0540E-02 1.1347E-01 -2.1922E-01 2.8622E-01 -2.1007E-01 7.8679E-02 -1.1040E-02 -3.1000E-04 S8 2.7346E-02 -1.8790E-02 2.3037E-02 -4.6720E-02 8.5003E-02 -9.1440E-02 5.7170E-02 -1.9410E-02 2.7050E-03 S9 -4.8970E-02 4.1164E-02 -1.7927E-01 5.1296E-01 -8.6886E-01 9.0611E-01 -5.6671E-01 1.9633E-01 -2.9220E-02 S10 -5.0290E-02 2.8862E-02 -2.2107E-01 5.7240E-01 -8.6623E-01 7.8565E-01 -4.2642E-01 1.2878E-01 -1.6770E-02 S11 6.0233E-02 -1.4690E-02 -6.9640E-02 2.0030E-01 -2.4848E-01 1.5276E-01 -4.3310E-02 1.6960E-03 1.0250E-03 S12 2.4636E-02 -1.3770E-02 7.2126E-02 -1.2109E-01 1.3750E-01 -9.4900E-02 3.6634E-02 -7.1300E-03 5.3200E-04 S13 -3.9970E-02 1.4235E-02 -8.2300E-03 2.9640E-03 -7.0000E-04 9.8300E-05 -7.5000E-06 4.8100E-07 -3.7000E-08 S14 -2.9200E-03 1.7170E-03 -1.5800E-03 4.7900E-04 -8.0000E-05 7.9800E-06 -4.7000E-07 1.4600E-08 -1.8000E-10 S15 -3.1500E-03 4.0530E-03 -9.4000E-04 2.9200E-04 -6.5000E-05 8.5100E-06 -6.3000E-07 2.4800E-08 -4.0000E-10 S16 -1.4750E-02 7.3800E-04 2.5100E-04 -9.9000E-05 1.5600E-05 -1.2000E-06 4.5200E-08 -3.6000E-10 -1.2000E-11

[0156] Table 11

[0157] Table 12 shows the effective focal length f1 to f8 of each lens of the optical imaging lens set in Example 4, the total effective focal length f of the optical imaging lens set, the total track length TTL, half of the diagonal length of the effective pixel area on the imaging surface S19 ImgH, and the maximum half field angle HFOV.

[0158] f1 (mm) 100.00 f7 (mm) 10.54 f2 (mm) 5.63 f8 (mm) -3.60 f3 (mm) 8.41 f (mm) 4.02 f4 (mm) -7.11 TTL (mm) 5.48 f5 (mm) 10.64 ImgH (mm) 4.28 f6 (mm) -40.54 HFOV (°) 47.1

[0159] Table 12

[0160] Figure 8A The on-axis chromatic aberration curve of the optical imaging lens set of Example 4 is shown, which represents the convergence point deviation of light rays of different wavelengths after passing through the optical imaging lens set. Figure 8B The astigmatism curve of the optical imaging lens set of Example 4 is shown, which represents the meridional image surface curvature and sagittal image surface curvature. Figure 8C The distortion curve of the optical imaging lens set of Example 4 is shown, which represents the distortion size value corresponding to different image heights. Figure 8D The magnification chromatic aberration curve of the optical imaging lens set of Example 4 is shown, which represents the deviation of different image heights on the imaging surface after the light rays pass through the optical imaging lens set. According to Figures 8A to 8D It can be seen that the optical imaging lens set given in Example 4 can achieve good imaging quality.

[0161] Example 5

[0162] The following refers to Figures 9 to 10D An optical imaging lens set according to Example 5 of the present application is described. Figure 9 The structural schematic diagram of the optical imaging lens set according to Example 5 of the present application is shown.

[0163] As Figure 9 shown, the optical imaging lens set according to the exemplary embodiments of the present application sequentially includes, along the optical axis from the object side to the image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.

[0164] The first lens E1 has positive refractive power, its object side surface S1 is convex, and its image side surface S2 is concave. The second lens E2 has positive refractive power, its object side surface S3 is convex, and its image side surface S4 is concave. The third lens E3 has negative refractive power, its object side surface S5 is concave, and its image side surface S6 is convex. The fourth lens E4 has negative refractive power, its object side surface S7 is convex, and its image side surface S8 is concave. The fifth lens E5 has positive refractive power, its object side surface S9 is convex, and its image side surface S10 is convex. The sixth lens E6 has negative refractive power, its object side surface S11 is concave, and its image side surface S12 is convex. The seventh lens E7 has positive refractive power, its object side surface S13 is convex, and its image side surface S14 is concave. The eighth lens E8 has negative refractive power, its object side surface S15 is concave, and its image side surface S16 is concave. The filter E9 has an object side surface S17 and an image side surface S18. Light from an object passes through the surfaces S1 to S18 in sequence and is finally imaged on an imaging surface S19.

[0165] Table 13 shows the surface type, the radius of curvature, the thickness, the material and the conic constant of each lens of the optical imaging lens set of Example 5, wherein the units of the radius of curvature and the thickness are millimeter (mm).

[0166]

[0167] Table 13

[0168] As shown in Table 13, in Example 5, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical surfaces. Table 14 shows the high order term coefficients of the aspherical surfaces of Example 5, wherein each aspherical surface can be defined by the formula (1) given in Example 1.

[0169]

[0170]

[0171] Table 14

[0172] Table 15 shows the effective focal length f1 to f8 of each lens of the optical imaging lens set of Example 5, the total effective focal length f of the optical imaging lens set, the total track length TTL, half of the diagonal length of the effective pixel area on the imaging surface S19 ImgH, and the maximum half field angle HFOV.

[0173] f1 (mm) 99.97 f7 (mm) 11.50 f2 (mm) 4.69 f8 (mm) -3.39 f3 (mm) -100.00 f (mm) 4.07 f4 (mm) -18.12 TTL (mm) 5.52 f5 (mm) 8.15 ImgH (mm) 4.29 f6 (mm) -32.99 HFOV (°) 46.4

[0174] Table 15

[0175] Figure 10A The on-axis chromatic aberration curve of the optical imaging lens set of Example 5 is shown, which represents the convergence point deviation of light rays of different wavelengths after passing through the optical imaging lens set.Figure 10B Astigmatism curves of the optical imaging lens set of Example 5 are shown, which represent the meridional image curvature and sagittal image curvature. Figure 10C Distortion curves of the optical imaging lens set of Example 5 are shown, which represent the distortion size values corresponding to different image heights. Figure 10D Power chromatism curves of the optical imaging lens set of Example 5 are shown, which represent the deviation of different image heights of light rays on the imaging plane after passing through the optical imaging lens set. According to Figures 10A to 10D It can be known that the optical imaging lens set given by Example 5 can achieve good imaging quality.

[0176] Example 6

[0177] The following refers to Figures 11 to 12D An optical imaging lens set according to Example 6 of the present application is described. Figure 11 A structure schematic diagram of the optical imaging lens set according to Example 6 of the present application is shown.

[0178] As shown in Figure 11 The optical imaging lens set according to the exemplary embodiments of the present application sequentially includes, along the optical axis from the object side to the image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.

[0179] The first lens E1 has positive refractive power, the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has positive refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has negative refractive power, the object side surface S5 is a concave surface, and the image side surface S6 is a convex surface. The fourth lens E4 has negative refractive power, the object side surface S7 is a concave surface, and the image side surface S8 is a concave surface. The fifth lens E5 has positive refractive power, the object side surface S9 is a convex surface, and the image side surface S10 is a convex surface. The sixth lens E6 has positive refractive power, the object side surface S11 is a concave surface, and the image side surface S12 is a convex surface. The seventh lens E7 has positive refractive power, the object side surface S13 is a convex surface, and the image side surface S14 is a concave surface. The eighth lens E8 has negative refractive power, the object side surface S15 is a concave surface, and the image side surface S16 is a concave surface. The filter E9 has an object side surface S17 and an image side surface S18. Light from an object sequentially passes through each surface S1 to S18 and is finally imaged on the imaging surface S19.

[0180] Table 16 shows the surface type, curvature radius, thickness, material, and conic constant of each lens of the optical imaging lens set of Example 6, wherein the units of the curvature radius and the thickness are millimeters (mm).

[0181]

[0182]

[0183] Table 16

[0184] From Table 16, in Example 6, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical surfaces. Table 17 shows the high order term coefficients of the aspherical surfaces which can be used in Example 6, wherein each aspherical surface can be defined by the formula (1) given in Example 1.

[0185] Surface No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -3.2300E-02 -5.8600E-03 -5.9180E-02 1.4355E-01 -2.4683E-01 2.3053E-01 -1.2799E-01 4.2548E-02 -6.6300E-03 S2 -4.1880E-02 -2.2000E-02 1.8865E-02 -4.8540E-02 2.7048E-02 9.0300E-04 -4.0640E-02 3.9833E-02 -1.1250E-02 S3 -2.0830E-02 4.5710E-02 -2.0337E-01 6.2587E-01 -1.1188E+00 1.2829E+00 -9.2398E-01 3.7559E-01 -6.4730E-02 S4 -3.2620E-02 -3.0800E-03 -1.1830E-02 1.7735E-01 -4.7779E-01 7.2025E-01 -6.1594E-01 2.8557E-01 -5.5680E-02 S5 -1.5660E-02 2.0834E-02 1.0299E-02 3.6229E-02 -1.7864E-01 3.5774E-01 -3.7767E-01 2.1131E-01 -4.8910E-02 S6 -2.2540E-02 -5.2000E-03 9.4150E-03 1.9067E-02 -5.4500E-02 1.1157E-01 -1.3036E-01 8.5067E-02 -2.2880E-02 S7 1.8630E-03 -2.0820E-02 -1.1874E-01 4.1526E-01 -7.6209E-01 8.8244E-01 -6.2020E-01 2.3958E-01 -3.8730E-02 S8 3.3536E-02 -1.7250E-02 2.2837E-02 -4.7350E-02 8.4706E-02 -9.1400E-02 5.7405E-02 -1.9330E-02 2.7050E-03 S9 -3.8040E-02 4.4883E-02 -1.8030E-01 5.1149E-01 -8.6970E-01 9.0575E-01 -5.6659E-01 1.9659E-01 -2.9220E-02 S10 -4.7920E-02 2.3759E-02 -2.2263E-01 5.7265E-01 -8.6591E-01 7.8574E-01 -4.2644E-01 1.2881E-01 -1.6770E-02 S11 4.2631E-02 -1.5980E-02 -6.9660E-02 2.0040E-01 -2.4822E-01 1.5300E-01 -4.3190E-02 1.4540E-03 1.0250E-03 S12 4.2722E-02 -1.7750E-02 4.8227E-02 -5.3710E-02 5.2262E-02 -3.1140E-02 7.5540E-03 2.5200E-04 -2.6000E-04 S13 -1.2060E-02 1.6770E-03 -3.9100E-03 2.3780E-03 -1.0700E-03 3.1000E-04 -5.5000E-05 5.4700E-06 -2.3000E-07 S14 3.7280E-03 1.0950E-03 -1.4700E-03 4.1000E-04 -5.7000E-05 4.2000E-06 -1.3000E-07 -1.2000E-09 1.3500E-10 S15 -4.3100E-03 4.2160E-03 -7.0000E-04 2.2000E-04 -5.4000E-05 7.2800E-06 -5.3000E-07 2.0300E-08 -3.1000E-10 S16 -1.9140E-02 3.0900E-03 -6.6000E-04 1.2300E-04 -1.8000E-05 1.8100E-06 -1.2000E-07 4.3800E-09 -6.7000E-11

[0186] Table 17

[0187] Table 18 gives the effective focal length f1 to f8 of each lens of the optical imaging lens set in Example 6, the total effective focal length f of the optical imaging lens set, the total track length TTL, half of the diagonal length of the effective pixel area on the imaging surface S19 ImgH, and the maximum half field angle HFOV.

[0188] f1 (mm) 99.97 f7 (mm) 17.95 f2 (mm) 4.57 f8 (mm) -3.46 f3 (mm) -100.00 f (mm) 4.03 f4 (mm) -16.67 TTL (mm) 5.44 f5 (mm) 9.99 ImgH (mm) 4.29 f6 (mm) 48.22 HFOV (°) 46.8

[0189] Table 18

[0190] Figure 12A The axial chromatic aberration curve of the optical imaging lens set in Example 6 is shown, which represents the deviation of the converging focal points of light rays of different wavelengths after passing through the optical imaging lens set. Figure 12B The astigmatism curve of the optical imaging lens set in Example 6 is shown, which represents the meridional image curvature and sagittal image curvature. Figure 12C The distortion curve of the optical imaging lens set in Example 6 is shown, which represents the distortion size values corresponding to different image heights. Figure 12D The lateral chromatic aberration curve of the optical imaging lens set in Example 6 is shown, which represents the deviation of different image heights on the imaging surface after the light rays pass through the optical imaging lens set. According to the formula (2), the lateral chromatic aberration curve of the optical imaging lens set in Example 6 is shown. Figures 12A to 12D It can be seen that the optical imaging lens set given in Example 6 can achieve good imaging quality.

[0191] Example 7

[0192] The following refers to Figures 13 to 14D The optical imaging lens set according to Example 7 of the present application is described. Figure 13 The structure schematic diagram of the optical imaging lens set according to Example 7 of the present application is shown.

[0193] As Figure 13As shown, the optical imaging lens set according to the exemplary embodiment of the present application comprises, along the optical axis from the object side to the image side in order: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.

[0194] The first lens E1 has negative refractive power, with a convex object side surface S1 and a concave image side surface S2. The second lens E2 has positive refractive power, with a convex object side surface S3 and a concave image side surface S4. The third lens E3 has negative refractive power, with a concave object side surface S5 and a convex image side surface S6. The fourth lens E4 has negative refractive power, with a concave object side surface S7 and a concave image side surface S8. The fifth lens E5 has positive refractive power, with a convex object side surface S9 and a convex image side surface S10. The sixth lens E6 has positive refractive power, with a concave object side surface S11 and a convex image side surface S12. The seventh lens E7 has positive refractive power, with a convex object side surface S13 and a convex image side surface S14. The eighth lens E8 has negative refractive power, with a concave object side surface S15 and a concave image side surface S16. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object passes through the surfaces S1 to S18 in order and is finally imaged on the imaging surface S19.

[0195] Table 19 shows the surface type, the radius of curvature, the thickness, the material, and the conic constant of each lens of the optical imaging lens set of Example 7, wherein the radius of curvature and the thickness are in millimeters (mm).

[0196]

[0197]

[0198] Table 19

[0199] As can be seen from Table 19, in Example 7, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical surfaces. Table 20 shows the high order term coefficients of the aspherical surfaces of Example 7, wherein each aspherical surface can be defined by the formula (1) given in Example 1 above.

[0200] Surface No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -3.9430E-02 -2.3960E-02 4.8979E-02 -9.5200E-02 6.8382E-02 1.8669E-02 -8.8800E-02 6.6713E-02 -1.6280E-02 S2 -6.8560E-02 -1.3210E-02 1.4667E-02 -3.6910E-02 3.5284E-02 -7.7000E-04 -7.5840E-02 7.1897E-02 -1.9520E-02 S3 -3.0500E-02 3.6690E-02 -1.8196E-01 5.7997E-01 -1.0556E+00 1.2490E+00 -9.2190E-01 3.7728E-01 -6.4430E-02 S4 -3.0110E-02 -5.6400E-03 -1.0620E-02 1.7996E-01 -4.7612E-01 7.2089E-01 -6.1594E-01 2.8557E-01 -5.5680E-02 S5 -1.9140E-02 1.8293E-02 9.8680E-03 3.6098E-02 -1.7830E-01 3.5841E-01 -3.7767E-01 2.1131E-01 -4.8910E-02 S6 -3.4300E-02 -1.0430E-02 4.9550E-03 1.7453E-02 -5.4460E-02 1.1214E-01 -1.3036E-01 8.5067E-02 -2.2880E-02 S7 -8.8800E-03 -1.8910E-02 -1.7046E-01 6.1390E-01 -1.1810E+00 1.4037E+00 -9.9180E-01 3.8115E-01 -6.1290E-02 S8 2.8479E-02 -1.8510E-02 2.4098E-02 -4.6910E-02 8.4664E-02 -9.1500E-02 5.7355E-02 -1.9360E-02 2.7050E-03 S9 -4.4790E-02 5.0012E-02 -1.8164E-01 5.1017E-01 -8.7004E-01 9.0579E-01 -5.6656E-01 1.9657E-01 -2.9220E-02 S10 -4.7090E-02 2.4236E-02 -2.2227E-01 5.7308E-01 -8.6568E-01 7.8584E-01 -4.2638E-01 1.2885E-01 -1.6770E-02 S11 4.3402E-02 -1.7180E-02 -6.9920E-02 2.0060E-01 -2.4786E-01 1.5336E-01 -4.2900E-02 1.6680E-03 1.0250E-03 S12 4.4958E-02 -1.9090E-02 4.7712E-02 -4.9690E-02 4.3924E-02 -2.7000E-02 9.0740E-03 -1.3500E-03 5.1700E-05 S13 -1.2290E-02 6.9960E-03 -6.8000E-03 3.4250E-03 -1.1600E-03 2.3600E-04 -2.8000E-05 1.7100E-06 -4.3000E-08 S14 2.6320E-03 3.8840E-03 -2.6900E-03 8.9500E-04 -2.0000E-04 3.0700E-05 -2.8000E-06 1.4300E-07 -3.0000E-09 S15 -3.4200E-03 -3.8000E-04 7.5700E-04 3.6800E-06 -3.8000E-05 7.2600E-06 -6.6000E-07 3.1000E-08 -5.9000E-10 S16 -1.7210E-02 7.7100E-04 5.6500E-05 2.6500E-05 -1.5000E-05 2.5100E-06 -2.0000E-07 8.1900E-09 -1.3000E-10

[0201] Table 20

[0202] Table 21 shows the effective focal length f1 to f8 of each lens of the optical imaging lens set of Example 7, the total effective focal length f of the optical imaging lens set, the total track length TTL, half of the diagonal length of the effective pixel area on the imaging surface S19 ImgH, and the maximum half field angle of the optical imaging lens set.

[0203] f1 (mm) -100.00 f7 (mm) 10.01 f2 (mm) 4.15 f8 (mm) -3.16 f3 (mm) -48.77 f (mm) 4.08 f4 (mm) -18.31 TTL (mm) 5.63 f5 (mm) 10.29 ImgH (mm) 4.29 f6 (mm) 100.00 HFOV (°) 46.4

[0204] Table 21

[0205] Figure 14A The on-axis chromatic aberration curve of the optical imaging lens set of Example 7 is shown, which represents the convergence point deviation of light rays of different wavelengths after passing through the optical imaging lens set. Figure 14B The astigmatism curve of the optical imaging lens set of Example 7 is shown, which represents the meridional image curvature and sagittal image curvature. Figure 14C The distortion curve of the optical imaging lens set of Example 7 is shown, which represents the distortion size values corresponding to different image heights. Figure 14D The magnification chromatic aberration curve of the optical imaging lens set of Example 7 is shown, which represents the deviation of different image heights on the imaging plane after the light rays pass through the optical imaging lens set. According to Figures 14A to 14D It can be seen that the optical imaging lens set given in Example 7 can achieve good imaging quality.

[0206] Example 8

[0207] The following refers to Figures 15 to 16D An optical imaging lens set according to Example 8 of the present application is described. Figure 15 A structural schematic diagram of the optical imaging lens set according to Example 8 of the present application is shown.

[0208] As Figure 15 shown, the optical imaging lens set according to the exemplary embodiments of the present application sequentially includes, along the optical axis from the object side to the image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging plane S19.

[0209] The first lens E1 has positive refractive power, the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has positive refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has positive refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a convex surface. The fourth lens E4 has negative refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface. The fifth lens E5 has negative refractive power, the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens E6 has positive refractive power, the object side surface S11 is a concave surface, and the image side surface S12 is a convex surface. The seventh lens E7 has positive refractive power, the object side surface S13 is a convex surface, and the image side surface S14 is a concave surface. The eighth lens E8 has negative refractive power, the object side surface S15 is a concave surface, and the image side surface S16 is a concave surface. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through each surface S1 to S18 and is finally imaged on the imaging plane S19.

[0210] Table 22 shows the surface type, the radius of curvature, the thickness, the material and the conic constant of each lens of the optical imaging lens set of Example 8, wherein the units of the radius of curvature and the thickness are millimeter (mm).

[0211]

[0212] Table 22

[0213] From Table 22, it can be known that in Example 8, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical surfaces. Table 23 shows the high order term coefficients of the aspherical surfaces which can be used in Example 8, wherein each aspherical surface can be defined by the formula (1) given in Example 1.

[0214]

[0215]

[0216] Table 23

[0217] Table 24 gives the effective focal length f1 to f8 of each lens of the optical imaging lens set of Example 8, the total effective focal length f of the optical imaging lens set, the total track length TTL, half of the diagonal length of the effective pixel area on the imaging surface S19 ImgH and the maximum half field angle HFOV.

[0218] f1 (mm) 100.00 f7 (mm) 10.43 f2 (mm) 4.88 f8 (mm) -3.56 f3 (mm) 99.28 f (mm) 4.07 f4 (mm) -15.28 TTL (mm) 5.50 f5 (mm) -100.00 ImgH (mm) 4.29 f6 (mm) 10.53 HFOV (°) 45.7

[0219] Table 24

[0220] Figure 16A The on-axis chromatic aberration curve of the optical imaging lens set of Example 8 is shown, which represents the deviation of the converging focal points of light rays with different wavelengths after passing through the optical imaging lens set. Figure 16B The astigmatism curve of the optical imaging lens set of Example 8 is shown, which represents the meridional image curvature and sagittal image curvature. Figure 16C The distortion curve of the optical imaging lens set of Example 8 is shown, which represents the distortion size values corresponding to different image heights. Figure 16D The lateral chromatic aberration curve of the optical imaging lens set of Example 8 is shown, which represents the deviation of different image heights on the imaging surface after the light rays pass through the optical imaging lens set. According to the formula (2), the lateral chromatic aberration curve can be calculated as follows: Figures 16A-16D It can be known that the optical imaging lens set given in Example 8 can achieve good imaging quality.

[0221] Example 9

[0222] The following refers to Figures 17-18D The optical imaging lens set according to Example 9 of the present application is described. Figure 17A structural schematic diagram of an optical imaging lens assembly according to Example 9 of the present application is shown.

[0223] like Figure 17 As shown, the optical imaging lens group according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis: an aperture STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9 and an imaging surface S19.

[0224] The first lens E1 has negative optical power, with its object-side surface S1 being convex and its image-side surface S2 being concave. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being concave. The third lens E3 has negative optical power, with its object-side surface S5 being concave and its image-side surface S6 being convex. The fourth lens E4 has negative optical power, with its object-side surface S7 being concave and its image-side surface S8 being concave. The fifth lens E5 has negative optical power, with its object-side surface S9 being convex and its image-side surface S10 being concave. The sixth lens E6 has positive optical power, with its object-side surface S11 being concave and its image-side surface S12 being convex. The seventh lens E7 has positive optical power, with its object-side surface S13 being convex and its image-side surface S14 being concave. The eighth lens E8 has negative optical power, with its object-side surface S15 being concave and its image-side surface S16 being concave. The filter E9 has an object-side surface S17 and an image-side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0225] Table 25 shows the surface type, curvature radius, thickness, material and conic coefficient of each lens of the optical imaging lens set of Example 9, wherein the units of curvature radius and thickness are both millimeters (mm).

[0226]

[0227]

[0228] Table 25

[0229] As can be seen from Table 25, in Example 9, both the object-side surface and the image-side surface of any of the first lens element E1 through the eighth lens element E8 are aspherical surfaces. Table 26 shows the high-order coefficients of the various aspherical mirror surfaces that can be used in Example 9, where the surface shape of each aspherical surface can be defined by Formula (1) given in Example 1 above.

[0230] Face No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -4.0090E-02 -3.8660E-02 1.0210E-01 -1.2814E-01 -4.0270E-02 2.8052E-01 -3.2690E-01 1.6644E-01 -3.2230E-02 S2 -7.5190E-02 -3.9020E-02 1.4898E-01 -3.0837E-01 2.8921E-01 -3.4430E-02 -2.0416E-01 1.6702E-01 -4.0730E-02 S3 -3.1460E-02 2.3373E-02 -1.5898E-01 6.8360E-01 -1.5181E+00 1.9984E+00 -1.5386E+00 6.3475E-01 -1.0776E-01 S4 -1.8000E-02 -7.7300E-03 -1.6810E-02 1.7984E-01 -4.7498E-01 7.2055E-01 -6.1594E-01 2.8557E-01 -5.5680E-02 S5 -2.0060E-02 1.0148E-02 1.0029E-02 3.6385E-02 -1.7777E-01 3.5878E-01 -3.7767E-01 2.1131E-01 -4.8910E-02 S6 -5.4490E-02 -5.0000E-04 3.2750E-03 1.5808E-02 -5.4130E-02 1.1163E-01 -1.3036E-01 8.5067E-02 -2.2880E-02 S7 -2.9220E-02 -4.8000E-04 -2.4069E-01 7.8992E-01 -1.4921E+00 1.7359E+00 -1.1998E+00 4.5115E-01 -7.0990E-02 S8 3.4082E-02 -2.4710E-02 2.4637E-02 -4.5860E-02 8.4652E-02 -9.1870E-02 5.7224E-02 -1.9370E-02 2.7050E-03 S9 -5.6980E-02 5.8117E-02 -1.7782E-01 5.1071E-01 -8.7031E-01 9.0547E-01 -5.6672E-01 1.9651E-01 -2.9220E-02 S10 -4.3530E-02 3.0867E-02 -2.2023E-01 5.7308E-01 -8.6611E-01 7.8551E-01 -4.2652E-01 1.2879E-01 -1.6770E-02 S11 2.2124E-02 -1.0670E-02 -6.9200E-02 1.9968E-01 -2.4833E-01 1.5328E-01 -4.3200E-02 1.4850E-03 1.0250E-03 S12 -1.0710E-02 3.9898E-02 -9.3170E-02 1.7487E-01 -1.8114E-01 1.1916E-01 -5.1860E-02 1.3333E-02 -1.4800E-03 S13 -1.5480E-02 3.6170E-03 -2.1400E-03 8.4300E-04 -2.1000E-04 2.9900E-05 -2.4000E-06 9.7800E-08 -1.5000E-09 S14 4.7080E-03 -3.7400E-03 6.8200E-04 7.7400E-05 -4.4000E-05 6.3600E-06 -4.2000E-07 1.1800E-08 -6.6000E-11 S15 -3.3050E-02 9.9030E-03 -1.0600E-03 2.8900E-04 -8.2000E-05 1.2200E-05 -9.5000E-07 3.8200E-08 -6.2000E-10 S16 -1.0790E-02 -5.9200E-03 3.3640E-03 -8.1000E-04 1.1600E-04 -1.0000E-05 5.5100E-07 -1.6000E-08 2.0800E-10

[0231] Table 26

[0232] Table 27 shows the effective focal length f1 to f8 of each lens of the optical imaging lens set in Example 9, the total effective focal length f of the optical imaging lens set, the total track length TTL, half of the diagonal length of the effective pixel area on the imaging surface S19 ImgH, and the maximum half field angle HFOV.

[0233] f1 (mm) -100.00 f7 (mm) 7.55 f2 (mm) 4.49 f8 (mm) -3.41 f3 (mm) -300.00 f (mm) 4.00 f4 (mm) -21.10 TTL (mm) 5.48 f5 (mm) -100.00 ImgH (mm) 4.29 f6 (mm) 12.81 HFOV (°) 46.3

[0234] Table 27

[0235] Figure 18A The on-axis chromatic aberration curve of the optical imaging lens set of Example 9 is shown, which represents the convergence point deviation of light rays of different wavelengths after passing through the optical imaging lens set. Figure 18B The astigmatism curve of the optical imaging lens set of Example 9 is shown, which represents the meridional image curvature and sagittal image curvature. Figure 18C The distortion curve of the optical imaging lens set of Example 9 is shown, which represents the distortion size value corresponding to different image heights. Figure 18D The magnification chromatic aberration curve of the optical imaging lens set of Example 9 is shown, which represents the deviation of different image heights on the imaging surface after the light rays pass through the optical imaging lens set. According to Figures 18A-18D It can be seen that the optical imaging lens set given in Example 9 can achieve good imaging quality.

[0236] Example 10

[0237] The following refers to Figures 19-20D The optical imaging lens set according to Example 10 of the present application is described. Figure 19 The structure diagram of the optical imaging lens set according to Example 10 of the present application is shown.

[0238] As Figure 19 shown, the optical imaging lens set according to the exemplary embodiments of the present application sequentially includes, along the optical axis from the object side to the image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an imaging surface S19.

[0239] The first lens E1 has negative focal power, with the object side surface S1 being convex and the image side surface S2 being concave. The second lens E2 has positive focal power, with the object side surface S3 being convex and the image side surface S4 being concave. The third lens E3 has positive focal power, with the object side surface S5 being convex and the image side surface S6 being convex. The fourth lens E4 has negative focal power, with the object side surface S7 being concave and the image side surface S8 being concave. The fifth lens E5 has negative focal power, with the object side surface S9 being convex and the image side surface S10 being concave. The sixth lens E6 has positive focal power, with the object side surface S11 being concave and the image side surface S12 being convex. The seventh lens E7 has positive focal power, with the object side surface S13 being convex and the image side surface S14 being concave. The eighth lens E8 has negative focal power, with the object side surface S15 being concave and the image side surface S16 being concave. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object passes through the surfaces S1 to S18 in sequence and is finally imaged on the imaging surface S19.

[0240] Table 28 shows the surface type, radius of curvature, thickness, material and conic constant of each lens of the optical imaging lens set of Example 10, wherein the units of the radius of curvature and the thickness are millimeter (mm).

[0241]

[0242]

[0243] Table 28

[0244] As shown in Table 28, in Example 10, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical surfaces. Table 29 shows the high order term coefficients of the aspherical surfaces of Example 10, wherein each aspherical surface can be defined by the formula (1) given in Example 1 above.

[0245] Face No. A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -4.0680E-02 -1.0390E-02 -4.3280E-02 5.1682E-02 -7.1250E-02 7.4461E-02 -5.8080E-02 3.0112E-02 -6.9200E-03 S2 -4.9670E-02 -4.3600E-02 1.3948E-01 -5.3063E-01 1.0093E+00 -1.1600E+00 7.7231E-01 -2.7011E-01 3.8154E-02 S3 -1.8120E-02 1.3939E-02 5.7380E-03 -2.0020E-02 7.2056E-02 -1.0532E-01 7.7842E-02 -2.9700E-02 4.7620E-03 S4 -5.0280E-02 5.3341E-02 -2.3371E-01 8.0015E-01 -1.4799E+00 1.6544E+00 -1.0529E+00 3.4630E-01 -4.5750E-02 S5 -6.4200E-02 8.5348E-02 -2.2737E-01 5.6738E-01 -8.3556E-01 7.3149E-01 -3.5655E-01 9.0746E-02 -1.0760E-02 S6 -2.6500E-02 7.0430E-03 1.4475E-01 -5.0485E-01 9.2466E-01 -1.0063E+00 6.5509E-01 -2.2461E-01 2.9575E-02 S7 8.3900E-04 9.0450E-03 -1.0666E-01 1.8931E-01 -2.3459E-01 2.1585E-01 -1.1867E-01 3.3721E-02 -3.8400E-03 S8 2.5544E-02 1.0959E-02 -8.3690E-02 1.5004E-01 -1.6014E-01 1.1948E-01 -5.8990E-02 1.6728E-02 -2.0200E-03 S9 -5.1800E-02 -2.0160E-02 8.9703E-02 -1.3213E-01 1.3877E-01 -9.6960E-02 4.3320E-02 -1.1700E-02 1.5230E-03 S10 -3.8170E-02 -2.0700E-02 1.0856E-02 -1.6200E-03 8.9100E-04 -7.0900E-03 7.4530E-03 -3.1000E-03 4.3200E-04 S11 8.6628E-02 -8.1190E-02 6.1945E-02 -6.1480E-02 4.6404E-02 -1.8910E-02 -1.0800E-03 3.7210E-03 -9.9000E-04 S12 6.5073E-02 -5.9040E-02 5.4901E-02 -2.7580E-02 -3.9500E-03 1.8532E-02 -1.2970E-02 3.8430E-03 -4.0000E-04 S13 -1.9040E-02 -9.2300E-03 6.7250E-03 -3.1500E-03 9.5200E-04 -1.8000E-04 1.9100E-05 -7.8000E-07 -1.1000E-08 S14 2.8440E-03 -8.2400E-03 2.5590E-03 -4.9000E-04 6.2700E-05 -5.4000E-06 2.9300E-07 -9.3000E-09 1.2900E-10 S15 -5.6600E-03 3.4080E-03 -6.5000E-04 2.1600E-04 -5.0000E-05 6.3000E-06 -4.5000E-07 1.7200E-08 -2.7000E-10 S16 -3.5200E-02 1.1674E-02 -3.3800E-03 6.7700E-04 -8.9000E-05 7.5400E-06 -4.0000E-07 1.1700E-08 -1.5000E-10

[0246] Table 29

[0247] Table 30 shows the effective focal length f1 to f8 of each lens of the optical imaging lens set of Example 10, the total effective focal length f of the optical imaging lens set, the total track length TTL, half of the diagonal length of the effective pixel area on the imaging surface S19 ImgH, and the maximum half field angle HFOV.

[0248] f1 (mm) -100.02 f7 (mm) 16.93 f2 (mm) 5.21 f8 (mm) -3.48 f3 (mm) 8.27 f (mm) 4.08 f4 (mm) -8.33 TTL (mm) 5.48 f5 (mm) -100.00 ImgH (mm) 4.20 f6 (mm) 10.76 HFOV (°) 46.2

[0249] Table 30

[0250] Figure 20A The on-axis chromatic aberration curve of the optical imaging lens set of Example 10 is shown, which represents the convergence point deviation of light rays of different wavelengths after passing through the optical imaging lens set.Figure 20B Astigmatism curves of the optical imaging lens set of Example 10 are shown, which represent the meridional image curvature and sagittal image curvature. Figure 20C Distortion curves of the optical imaging lens set of Example 10 are shown, which represent the distortion magnitude values corresponding to different image heights. Figure 20D Magnification chromatic aberration curves of the optical imaging lens set of Example 10 are shown, which represent the deviation of different image heights on the imaging plane after the light rays pass through the optical imaging lens set. According to Figures 20A-20D It can be known that the optical imaging lens set given by Example 10 can achieve good imaging quality.

[0251] In summary, Examples 1 to 10 respectively satisfy the relationships shown in Table 31.

[0252]

[0253] Table 31

[0254] The present application also provides an imaging device, the electronic photosensitive element of which can be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The imaging device can be a stand-alone imaging apparatus 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 set described above.

[0255] The above description is merely preferred embodiments of the present application and a description of the principles of the technology used. It should be understood by those skilled in the art that the scope of the application involved in the present application is not limited to the technical solutions formed by the specific combinations of the technical features described above, and should also cover other technical solutions formed by any combination of the above technical features or equivalent features without departing from the inventive concept. For example, the above features can be replaced with technical features disclosed in the present application (but not limited to) having similar functions to form technical solutions.

Claims

1. An optical imaging lens assembly, comprising, in order from the object side to the image side along the optical axis: The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens are characterized in that: The first lens has an optical power, an object-side surface thereof being convex, and an image-side surface thereof being concave; The second lens has positive optical power and its object side surface is convex; The third lens has optical power and its image side surface is convex; The fourth lens has negative optical power and its image side surface is concave; The fifth lens has optical power; The sixth lens has optical power, an object-side surface thereof is concave, and an image-side surface thereof is convex; The seventh lens has positive refractive power, and its object-side surface is convex; and The eighth lens has negative optical power, and both the object-side surface and the image-side surface thereof are concave; The optical imaging lens set includes eight lenses having optical power. At least one of the fifth lens and the sixth lens has positive refractive power; A curvature radius R12 of the image-side surface of the sixth lens and a curvature radius R11 of the object-side surface of the sixth lens satisfy 0.54≤R12 / R11≤1.14; The total effective focal length f of the optical imaging lens group and the effective focal length f4 of the fourth lens satisfy -0.64≤f / f4≤-0.

19.

2. The optical imaging lens assembly according to claim 1, wherein: The effective focal length f2 of the second lens and the effective focal length f7 of the seventh lens satisfy 0.25≤f2 / f7≤0.

59.

3. The optical imaging lens assembly according to claim 1, wherein: The combined focal length f123456 of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens and the total effective focal length f of the optical imaging lens group satisfy 1.0<f123456 / f≤1.

20.

4. The optical imaging lens assembly according to claim 1, wherein: A center thickness CT7 of the seventh lens on the optical axis and a distance TTL from the object-side surface of the first lens to the imaging surface of the optical imaging lens assembly on the optical axis satisfy 1.74≤CT7 / TTL×10≤2.

27.

5. The optical imaging lens assembly according to claim 1, wherein: A maximum effective radius DT61 of the object-side surface of the sixth lens and a maximum effective radius DT71 of the object-side surface of the seventh lens satisfy 0.50≤DT61 / DT71≤0.

64.

6. The optical imaging lens assembly according to claim 1, wherein: A curvature radius R1 of the object-side surface of the first lens, a curvature radius R2 of the image-side surface of the first lens, and an effective focal length f1 of the first lens satisfy 0.03≤(R1+R2) / |f1|≤0.

08.

7. The optical imaging lens assembly according to claim 1, wherein: A curvature radius R6 of the image-side surface of the third lens and an effective focal length f3 of the third lens satisfy 0.17≤|R6 / f3|≤0.

61.

8. The optical imaging lens assembly according to claim 1, wherein: A curvature radius R15 of the object-side surface of the eighth lens and a curvature radius R16 of the image-side surface of the eighth lens satisfy -0.71≤R15 / R16≤-0.

41.

9. The optical imaging lens assembly according to claim 1, wherein: A distance T67 between the sixth lens and the seventh lens on the optical axis and a distance T78 between the seventh lens and the eighth lens on the optical axis satisfy 0.47≤T67 / T78≤0.

91.

10. The optical imaging lens assembly according to any one of claims 1 to 9, characterized in that: The total effective focal length f of the optical imaging lens set and the entrance pupil diameter EPD of the optical imaging lens set satisfy 1.70≤f / EPD<2.

0.

11. The optical imaging lens assembly according to claim 10, wherein: A distance TTL from the object side of the first lens to the imaging surface of the optical imaging lens group on the optical axis and half the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens group ImgH satisfy 1.27≤TTL / ImgH≤1.

35.

12. The optical imaging lens assembly according to any one of claims 1 to 9, characterized in that: The maximum half field of view HFOV of the optical imaging lens group satisfies 45.2°≤HFOV≤47.1°.

Images