An optical imaging lens

Abstract

The application discloses an optical imaging lens, which comprises, in sequence from the object side to the image side along the optical axis, an aperture stop, a first lens with optical power, a second lens with optical power, a third lens with negative optical power, a fourth lens with optical power, a fifth lens with negative optical power, and a sixth lens with optical power, wherein the on-axis distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis and the vertex of the effective radius of the object side surface of the sixth lens and the on-axis distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis and the vertex of the effective radius of the image side surface of the sixth lens satisfy the condition: 5.5 < (SAG61 + SAG62) / (SAG61 - SAG62) < 18.5. By reasonably controlling the above condition, the chief ray angle of the optical imaging lens can be adjusted, the relative brightness of the optical imaging lens can be effectively improved, and the image clarity can be improved.

Description

Technical Field

[0001] This invention belongs to the field of optical imaging, and particularly relates to an optical imaging lens comprising six lenses. Background Technology

[0002] Current mainstream mobile phone camera lens assemblies typically employ a configuration of a large image sensor lens, a wide-angle lens, and a telephoto lens. Among these, telephoto lenses, due to their small field of view and shallow depth of field, are suitable for shooting distant objects and effectively blurring the background to highlight the subject. Therefore, equipping mobile phones with a telephoto lens has become a mainstream trend. This invention proposes a six-element telephoto optical imaging lens assembly that achieves both long-range telephoto capabilities and high image quality. Summary of the Invention

[0003] The present invention aims to provide an optical imaging lens composed of six lenses, which effectively balances the low-order aberrations of the system, reduces the sensitivity of tolerances, and realizes the characteristics of a large image plane of the optical system.

[0004] This application provides an optical imaging lens, comprising, sequentially from the object side to the image side along the optical axis:

[0005] Aperture;

[0006] A first lens with optical power;

[0007] A second lens with optical power;

[0008] A third lens with negative optical power;

[0009] A fourth lens with optical power;

[0010] A fifth lens with negative optical power;

[0011] A sixth lens with optical power;

[0012] Among them, the axial distance SAG61 between the intersection of the object side and the optical axis of the sixth lens and the vertex of the effective radius of the object side of the sixth lens and the axial distance SAG62 between the intersection of the image side and the optical axis of the sixth lens and the vertex of the effective radius of the image side of the sixth lens satisfy: 5.5 < (SAG61 + SAG62) / (SAG61 - SAG62) < 18.5.

[0013] According to one embodiment of this application, half of the maximum field of view (Semi-FOV) of the optical imaging lens satisfies: Semi-FOV < 25°.

[0014] According to one embodiment of this application, the axial distance from the side of the first lens to the imaging surface, TTL, satisfies the condition that half the diagonal length of the effective pixel area on the imaging surface, ImgH, is 2.5 < TTL / ImgH < 3.5.

[0015] According to one embodiment of this application, the axial distance SAG31 between the intersection of the object side of the third lens and the optical axis and the vertex of the effective radius of the object side of the third lens and the axial distance SAG32 between the intersection of the image side of the third lens and the optical axis and the vertex of the effective radius of the image side of the third lens satisfy: 2.0 < SAG32 / SAG31 < 4.0.

[0016] According to one embodiment of this application, the axial distance SAG51 between the intersection of the object side of the fifth lens and the optical axis and the vertex of the effective radius of the object side of the fifth lens and the axial distance SAG52 between the intersection of the image side of the fifth lens and the optical axis and the vertex of the effective radius of the image side of the fifth lens satisfy: 1.0 < SAG52 / SAG51 < 1.5.

[0017] According to one embodiment of this application, the center thickness CT1 of the first lens on the optical axis and the edge thickness ET1 of the first lens satisfy: 2.0 < CT1 / ET1 < 3.0.

[0018] According to one embodiment of this application, the edge thickness ET3 of the third lens and the center thickness CT3 of the third lens on the optical axis satisfy: 1.5 < ET3 / CT3 < 3.0.

[0019] According to one embodiment of this application, the effective focal length f4 of the fourth lens and the radius of curvature R8 of the image side surface of the fourth lens satisfy: -2.5 < f4 / R8 < -0.9.

[0020] According to one embodiment of this application, the effective focal length f1 of the first lens and the radius of curvature R1 of the object side surface of the first lens satisfy: 1.5 < f1 / R1 < 2.0.

[0021] According to one embodiment of this application, the effective focal length f3 of the third lens, the radius of curvature R5 of the object side of the third lens, and the radius of curvature R6 of the image side of the third lens satisfy: -1.5 < f3 / (R5+R6) < -1.0.

[0022] According to one embodiment of this application, the Abbe number V3 of the third lens and the Abbe number V5 of the fifth lens satisfy: V3-V5<10.

[0023] According to one embodiment of this application, half the diagonal length of the effective pixel area on the imaging surface, ImgH, satisfies the condition: ImgH > 5.0 mm.

[0024] According to one embodiment of this application, half the diagonal length of the effective pixel area on the imaging surface, ImgH, satisfies the condition that ImgH / f < 0.5 with the effective focal length f of the optical imaging lens.

[0025] This application provides an optical imaging lens, comprising, sequentially from the object side to the image side along the optical axis:

[0026] Aperture;

[0027] A first lens with optical power;

[0028] A second lens with optical power;

[0029] A third lens with negative optical power;

[0030] A fourth lens with optical power;

[0031] A fifth lens with negative optical power;

[0032] A sixth lens with optical power;

[0033] Among them, half the diagonal length of the effective pixel area on the imaging surface, ImgH, and the effective focal length f of the optical imaging lens satisfy: ImgH / f < 0.5.

[0034] According to one embodiment of this application, half of the maximum field of view (Semi-FOV) of the optical imaging lens satisfies: Semi-FOV < 25°.

[0035] According to one embodiment of this application, the axial distance from the side of the first lens to the imaging surface, TTL, satisfies the condition that half the diagonal length of the effective pixel area on the imaging surface, ImgH, is 2.5 < TTL / ImgH < 3.5.

[0036] According to one embodiment of this application, the axial distance SAG31 between the intersection of the object side of the third lens and the optical axis and the vertex of the effective radius of the object side of the third lens and the axial distance SAG32 between the intersection of the image side of the third lens and the optical axis and the vertex of the effective radius of the image side of the third lens satisfy: 2.0 < SAG32 / SAG31 < 4.0.

[0037] According to one embodiment of this application, the axial distance SAG51 between the intersection of the object side of the fifth lens and the optical axis and the vertex of the effective radius of the object side of the fifth lens and the axial distance SAG52 between the intersection of the image side of the fifth lens and the optical axis and the vertex of the effective radius of the image side of the fifth lens satisfy: 1.0 < SAG52 / SAG51 < 1.5.

[0038] According to one embodiment of this application, the center thickness CT1 of the first lens on the optical axis and the edge thickness ET1 of the first lens satisfy: 2.0 < CT1 / ET1 < 3.0.

[0039] According to one embodiment of this application, the edge thickness ET3 of the third lens and the center thickness CT3 of the third lens on the optical axis satisfy: 1.5 < ET3 / CT3 < 3.0.

[0040] According to one embodiment of this application, the effective focal length f4 of the fourth lens and the radius of curvature R8 of the image side surface of the fourth lens satisfy: -2.5 < f4 / R8 < -0.9.

[0041] According to one embodiment of this application, the effective focal length f1 of the first lens and the radius of curvature R1 of the object side surface of the first lens satisfy: 1.5 < f1 / R1 < 2.0.

[0042] According to one embodiment of this application, the effective focal length f3 of the third lens, the radius of curvature R5 of the object side of the third lens, and the radius of curvature R6 of the image side of the third lens satisfy: -1.5 < f3 / (R5+R6) < -1.0.

[0043] According to one embodiment of this application, the Abbe number V3 of the third lens and the Abbe number V5 of the fifth lens satisfy: V3-V5<10.

[0044] According to one embodiment of this application, half the diagonal length of the effective pixel area on the imaging surface, ImgH, satisfies the condition: ImgH > 5.0 mm.

[0045] According to one embodiment of this application, the axial distance SAG61 between the intersection of the object side of the sixth lens and the optical axis and the vertex of the effective radius of the object side of the sixth lens and the axial distance SAG62 between the intersection of the image side of the sixth lens and the optical axis and the vertex of the effective radius of the image side of the sixth lens satisfy: 5.5 < (SAG61 + SAG62) / (SAG61 - SAG62) < 18.5.

[0046] The beneficial effects of this invention are:

[0047] The optical imaging lens provided by this invention includes multiple lenses, such as the first to sixth lenses. By reasonably controlling the above conditions, it is beneficial to adjust the principal ray angle of the optical imaging lens, which can effectively improve the relative brightness of the optical imaging lens and enhance the image sharpness; by constraining the ratio of half the diagonal length of the effective pixel area on the imaging surface to the effective focal length of the optical imaging lens, the field of view of the system can be effectively controlled. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 This is a schematic diagram of the lens group structure of embodiment 1 of the optical imaging lens of the present invention;

[0050] Figures 2a to 2d These are the on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens embodiment 1 of the present invention, respectively.

[0051] Figure 3 This is a schematic diagram of the lens group structure of embodiment 2 of the optical imaging lens of the present invention;

[0052] Figures 4a to 4d These are the on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens embodiment 2 of the present invention, respectively.

[0053] Figure 5 This is a schematic diagram of the lens group structure of embodiment 3 of the optical imaging lens of the present invention;

[0054] Figures 6a to 6d These are the on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens embodiment 3 of the present invention, respectively.

[0055] Figure 7 This is a schematic diagram of the lens group structure of embodiment 4 of the optical imaging lens of the present invention;

[0056] Figures 8a to 8d These are the on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens embodiment 4 of the present invention, respectively.

[0057] Figure 9 This is a schematic diagram of the lens group structure of embodiment 5 of the optical imaging lens of the present invention;

[0058] Figures 10a to 10d These are the on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens embodiment 5 of the present invention, respectively.

[0059] Figure 11 This is a schematic diagram of the lens group structure of embodiment 6 of the optical imaging lens of the present invention;

[0060] Figures 12a to 12d These are, respectively, the on-axis chromatic aberration curve, astigmatism curve, distortion curve, and magnification chromatic aberration curve of the optical imaging lens embodiment 6 of the present invention. Detailed Implementation

[0061] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0062] It should be noted that in this specification, the terms "first," "second," "third," etc., are used only to distinguish one feature from another and do not imply any limitation on the features. Therefore, without departing from the teachings of the invention, the first lens discussed below may also be referred to as the second lens or the third lens.

[0063] It should also be understood that the terms "comprising," "including," "having," "containing," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. Furthermore, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features, not individual elements in the list. Additionally, when describing embodiments of this application, the word "may" is used to mean "one or more embodiments of this application." And the term "exemplary" is intended to refer to an example or illustration.

[0064] In the accompanying drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for ease of illustration. Specifically, the shapes of the spherical or aspherical surfaces shown in the drawings are illustrated by way of example. That is, the shapes of the spherical or aspherical surfaces are not limited to those shown in the drawings. The drawings are for illustrative purposes only and are not strictly to scale.

[0065] In the description of this invention, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the location of the convexity is not defined, it means that the lens surface is convex at least in the paraxial region. If the lens surface is concave and the location of the concaveness 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 being photographed is called the object-side surface of the lens, and the surface of each lens closest to the imaging plane is called the image-side surface of the lens.

[0066] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms (e.g., those defined in common dictionaries) shall be interpreted as having the meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formalized manner unless expressly so specified herein.

[0067] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The features, principles, and other aspects of the present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0068] Exemplary Implementation

[0069] An exemplary embodiment of the present invention provides an optical imaging lens comprising six lenses, which are sequentially arranged along the optical axis from the object side to the image side as follows: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, wherein each lens is independent of the others and there is an air gap between each lens on the optical axis.

[0070] This exemplary embodiment provides an optical imaging lens, which, along the optical axis from the object side to the image side, sequentially includes: an aperture stop; a first lens having optical power; a second lens having optical power; a third lens having negative optical power; a fourth lens having optical power; a fifth lens having negative optical power; and a sixth lens having optical power. The axial distance SAG61 between the intersection of the object side surface of the sixth lens and the optical axis to the vertex of the effective radius of the object side surface of the sixth lens, and the axial distance SAG62 between the intersection of the image side surface of the sixth lens and the optical axis to the vertex of the effective radius of the image side surface of the sixth lens, satisfy the condition: 5.5 < (SAG61 + SAG62) / (SAG61 - SAG62) < 18.5. By reasonably controlling the above conditions, it is beneficial to adjust the principal ray angle of the optical imaging lens, which can effectively improve the relative brightness of the optical imaging lens and enhance image sharpness. More specifically, the axial distance SAG61 between the intersection of the object side and the optical axis of the sixth lens and the vertex of the effective radius of the object side of the sixth lens, and the axial distance SAG62 between the intersection of the image side and the optical axis of the sixth lens and the vertex of the effective radius of the image side of the sixth lens, satisfy: 5.55 < (SAG61 + SAG62) / (SAG61 - SAG62) < 18.40.

[0071] In this exemplary embodiment, half the diagonal length of the effective pixel area on the imaging plane, ImgH, and the effective focal length f of the optical imaging lens satisfy the condition: ImgH / f < 0.5. By constraining the ratio of half the diagonal length of the effective pixel area on the imaging plane to the effective focal length of the optical imaging lens, the field of view of the system can be effectively controlled. More specifically, in this exemplary embodiment, half the diagonal length of the effective pixel area on the imaging plane, ImgH, and the effective focal length f of the optical imaging lens satisfy the condition: ImgH / f < 0.45.

[0072] In this exemplary embodiment, half of the maximum field of view (Semi-FOV) of the optical imaging lens satisfies: Semi-FOV < 25°. By constraining the maximum field of view of the system, the telephoto characteristics of the system can be better realized. More specifically, according to one embodiment of this application, half of the maximum field of view (Semi-FOV) of the optical imaging lens satisfies: Semi-FOV < 23°.

[0073] In this exemplary embodiment, the axial distance from the object side of the first lens to the imaging plane, TTL, and half the diagonal length of the effective pixel area on the imaging plane, ImgH, satisfy the following condition: 2.5 < TTL / ImgH < 3.5. Reasonably controlling the ratio of TTL to ImgH is beneficial for achieving a larger imaging height while improving imaging quality. More specifically, the axial distance from the object side of the first lens to the imaging plane, TTL, and half the diagonal length of the effective pixel area on the imaging plane, ImgH, satisfy the following condition: 2.55 < TTL / ImgH < 3.15.

[0074] In this exemplary embodiment, the axial distance SAG31 between the intersection of the object side and the optical axis of the third lens and the vertex of the effective radius of the object side of the third lens, and the axial distance SAG32 between the intersection of the image side and the optical axis of the third lens and the vertex of the effective radius of the image side of the third lens, satisfy the following condition: 2.0 < SAG32 / SAG31 < 4.0. By controlling the ratio of SAG32 and SAG31 within a certain range, it is beneficial to reduce the sensitivity of the third lens and facilitate the processing and shaping of the lens. More specifically, the axial distance SAG31 between the intersection of the object side and the optical axis of the third lens and the vertex of the effective radius of the object side of the third lens, and the axial distance SAG32 between the intersection of the image side and the optical axis of the third lens and the vertex of the effective radius of the image side of the third lens, satisfy the following condition: 2.40 < SAG32 / SAG31 < 3.60.

[0075] In this exemplary embodiment, the axial distance SAG51 between the intersection of the object-side surface of the fifth lens and the optical axis to the vertex of the effective radius of the object-side surface of the fifth lens, and the axial distance SAG52 between the intersection of the image-side surface of the fifth lens and the optical axis to the vertex of the effective radius of the image-side surface of the fifth lens, satisfy the following condition: 1.0 < SAG52 / SAG51 < 1.5. Reasonably controlling the ratio range of SAG52 and SAG51 is beneficial for the imaging system to have a smaller incident angle and higher relative illumination when the principal ray is incident on the image plane, and also helps to improve the manufacturability of the fifth lens. More specifically, the axial distance SAG51 between the intersection of the object-side surface of the fifth lens and the optical axis to the vertex of the effective radius of the object-side surface of the fifth lens, and the axial distance SAG52 between the intersection of the image-side surface of the fifth lens and the optical axis to the vertex of the effective radius of the image-side surface of the fifth lens, satisfy the following condition: 1.15 < SAG52 / SAG51 < 1.30.

[0076] In this exemplary embodiment, the center thickness CT1 of the first lens on the optical axis and the edge thickness ET1 of the first lens satisfy: 2.0 < CT1 / ET1 < 3.0. Controlling this condition within a reasonable range is beneficial to improving the manufacturability of the first lens and reducing the difficulty of molding and manufacturing the first lens. More specifically, the center thickness CT1 of the first lens on the optical axis and the edge thickness ET1 of the first lens satisfy: 2.10 < CT1 / ET1 < 2.95.

[0077] In this exemplary embodiment, the edge thickness ET3 of the third lens and the center thickness CT3 of the third lens on the optical axis satisfy the following condition: 1.5 < ET3 / CT3 < 3.0. By reasonably adjusting the structural dimensions of the third lens, the third lens can maintain good manufacturability while ensuring good imaging effect. More specifically, the edge thickness ET3 of the third lens and the center thickness CT3 of the third lens on the optical axis satisfy the following condition: 1.70 < ET3 / CT3 < 3.60.

[0078] In this exemplary embodiment, the effective focal length f4 of the fourth lens and the radius of curvature R8 of the image-side surface of the fourth lens satisfy the following condition: -2.5 < f4 / R8 < -0.9. By controlling the ratio of the effective focal length of the fourth lens to the radius of curvature of the image-side surface of the fourth lens, the field curvature contribution of its image-side surface is kept within a reasonable range. More specifically, the effective focal length f4 of the fourth lens and the radius of curvature R8 of the image-side surface of the fourth lens satisfy the following condition: -2.45 < f4 / R8 < -1.0.

[0079] In this exemplary embodiment, the effective focal length f1 of the first lens and the radius of curvature R1 of the object-side surface of the first lens satisfy the following ratio: 1.5 < f1 / R1 < 2.0. By reasonably controlling the ratio of the effective focal length to the radius of curvature of the object-side surface of the first lens, the curvature of the object-side surface of the first lens can be controlled, ensuring that its field curvature contribution is within a reasonable range, thus reducing the optical sensitivity of the object-side surface of the first lens. More specifically, the effective focal length f1 of the first lens and the radius of curvature R1 of the object-side surface of the first lens satisfy the following ratio: 1.6 < f1 / R1 < 1.8.

[0080] In this exemplary embodiment, the effective focal length f3 of the third lens, the radius of curvature R5 of the object-side surface of the third lens, and the radius of curvature R6 of the image-side surface of the third lens satisfy the following condition: -1.5 < f3 / (R5+R6) < -1.0. By controlling the ratio of the effective focal length of the third lens to the sum of the radii of curvature of the object-side and image-side surfaces of the third lens within a reasonable range, coma generated by the front-end optical lens can be balanced, resulting in good imaging quality of the system. More specifically, the effective focal length f3 of the third lens, the radius of curvature R5 of the object-side surface of the third lens, and the radius of curvature R6 of the image-side surface of the third lens satisfy the following condition: -1.45 < f3 / (R5+R6) < -1.10.

[0081] In this exemplary embodiment, the Abbe number V3 of the third lens and the Abbe number V5 of the fifth lens satisfy the condition: V3 - V5 < 10. By satisfying the above condition, off-axis coma and astigmatism can be corrected, thereby improving image quality. More specifically, the Abbe number V3 of the third lens and the Abbe number V5 of the fifth lens satisfy the condition: V3 - V5 < 7.

[0082] In this exemplary embodiment, half the diagonal length of the effective pixel area on the imaging plane, ImgH, satisfies the condition: ImgH > 5.0 mm. By satisfying the above condition, a large image plane imaging effect can be achieved by the optical imaging lens. More specifically, half the diagonal length of the effective pixel area on the imaging plane, ImgH, satisfies the condition: ImgH > 5.30 mm.

[0083] In this exemplary embodiment, the object-side surface and image-side surface of any one of the first lens E1 to the sixth lens E6 are aspherical surfaces, and the surface shape x of each aspherical lens can be defined using, but is not limited to, the following aspherical formula:

[0084]

[0085] Where x is the distance vector from the vertex of the aspherical surface along the optical axis at a height of h; c is the paraxial curvature of the aspherical surface, c = 1 / R (that is, the paraxial curvature c is the reciprocal of the radius of curvature R in Table 1); k is the conic coefficient; Ai is the correction coefficient of the i-th order of the aspherical surface.

[0086] In this exemplary embodiment, the optical imaging lens may further include an aperture stop. The aperture stop may be positioned as needed, for example, it may be positioned between the object side and the first lens. Optionally, the optical imaging lens may further include a filter for correcting color deviation and / or a protective glass for protecting the photosensitive element located on the imaging plane.

[0087] The optical imaging lens according to the above embodiments of the present invention can employ multiple lenses, such as the six lenses described above. By rationally allocating the optical power, surface shape, center thickness of each lens, and on-axis spacing between each lens, the optical imaging lens has a large imaging plane, resulting in a wide imaging range and high imaging quality, while ensuring the ultra-thinness of the mobile phone.

[0088] In an exemplary embodiment, at least one of the mirror surfaces of each lens is an aspherical mirror surface; that is, at least one mirror surface from the object-side surface of the first lens to the image-side surface of the sixth lens is an aspherical mirror surface. The characteristic of an aspherical lens is that its curvature changes continuously from the lens center to the lens periphery. Unlike a spherical lens, which has a constant curvature from the lens center to the lens periphery, an aspherical lens has better curvature radius characteristics, offering advantages in improving distortion aberrations and astigmatism. By using an aspherical lens, aberrations occurring during imaging can be eliminated as much as possible, thereby improving image quality. Optionally, at least one of the object-side and image-side surfaces of each of the first, second, third, fourth, fifth, and sixth lenses is an aspherical mirror surface. Optionally, both the object-side and image-side surfaces of each of the first, second, third, fourth, fifth, and sixth lenses are aspherical mirror surfaces.

[0089] However, those skilled in the art will understand that the number of lenses constituting the optical imaging lens can be changed without departing from the technical solutions claimed in this application to obtain the various results and advantages described in this specification. For example, although six lenses are described as an example in the embodiments, the optical imaging lens is not limited to including six lenses, and may include other numbers of lenses if necessary.

[0090] The following describes a specific embodiment of the optical imaging lens applicable to the above embodiments with reference to the accompanying drawings. Specific Implementation Example 1

[0092] Figure 1 This is a schematic diagram of the lens group structure of embodiment 1 of the optical imaging lens of the present invention. The optical imaging lens includes, in sequence from the object side to the image side along the optical axis: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7 and imaging surface S15.

[0093] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. 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 convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging surface S15.

[0094] Table 1 shows the basic parameters of the optical imaging lens in Example 1, where the units for radius of curvature, thickness, and focal length are all millimeters (mm).

[0095]

[0096] Table 1

[0097] As shown in Table 2, in Example 1, the total effective focal length of the optical imaging lens is f = 16.60 mm, the distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S17 of the optical imaging lens on the optical axis is TTL = 15.15 mm, and half the diagonal length of the effective pixel area on the imaging surface S17 is ImgH = 5.32 mm. Half the maximum field of view of the optical imaging lens is Semi-FOV = 19.2°.

[0098]

[0099]

[0100] Table 2

[0101] The optical imaging lens in Example 1 satisfies:

[0102] (SAG61+SAG62) / (SAG61-SAG62)=6.64; where SAG61 is the axial distance between the intersection of the object side of the sixth lens and the optical axis and the vertex of the effective radius of the object side of the sixth lens, and SAG62 is the axial distance between the intersection of the image side of the sixth lens and the optical axis and the vertex of the effective radius of the image side of the sixth lens.

[0103] ImgH / f = 0.32; where ImgH is half the diagonal length of the effective pixel area on the imaging plane, and f is the effective focal length of the optical imaging lens.

[0104] Semi-FOV = 19.2°; where Semi-FOV is half of the maximum field of view of the optical imaging lens.

[0105] TTL / ImgH = 2.85; where TTL is the axial distance from the object side of the first lens to the imaging plane, and ImgH is half the diagonal length of the effective pixel area on the imaging plane.

[0106] SAG32 / SAG31 = 2.42; where SAG31 is the on-axis distance between the intersection of the object side of the third lens and the optical axis and the vertex of the effective radius of the object side of the third lens, and SAG32 is the on-axis distance between the intersection of the image side of the third lens and the optical axis and the vertex of the effective radius of the image side of the third lens.

[0107] SGA52 / SAG51 = 1.17; where SAG51 is the on-axis distance between the intersection of the object side of the fifth lens and the optical axis and the vertex of the effective radius of the object side of the fifth lens, and SAG52 is the on-axis distance between the intersection of the image side of the fifth lens and the optical axis and the vertex of the effective radius of the image side of the fifth lens.

[0108] CT1 / ET = 2.48; where CT1 is the center thickness of the first lens on the optical axis and ET1 is the edge thickness of the first lens.

[0109] ET3 / CT3 = 2.26; where ET3 is the edge thickness of the third lens and CT3 is the center thickness of the third lens on the optical axis.

[0110] f4 / R8 = -1.03; where f4 is the effective focal length of the fourth lens and R8 is the radius of curvature of the image side surface of the fourth lens.

[0111] f1 / R1 = 1.79; where f1 is the effective focal length of the first lens and R1 is the radius of curvature of the object side surface of the first lens.

[0112] f3 / (R5+R6)=-1.44; where f3 is the effective focal length of the third lens, R5 is the radius of curvature of the object side of the third lens, and R6 is the radius of curvature of the image side of the third lens.

[0113] V3-V5=6.7; where V3 is the Abbe number of the third lens and V5 is the Abbe number of the fifth lens.

[0114] ImgH = 5.32 mm; where ImgH is half the diagonal length of the effective pixel area on the imaging surface.

[0115] In Example 1, the object-side surface and image-side surface of any one of the lenses, from the first lens E1 to the sixth lens E6, are aspherical. Table 3 shows the higher-order coefficients A4, A6, A8, and A6 that can be used for each aspherical mirror S1-S12 in Example 1. 10 A 12 A 14 A 16 A 18 A 20 A 22 and A 24 .

[0116]

[0117]

[0118] Table 3

[0119] Figure 2a The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 1 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 2b The astigmatism curve of the optical imaging lens of Embodiment 1 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 2c The distortion curve of the optical imaging lens of Example 1 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 2d The magnification chromatic aberration curve of the optical imaging lens of Embodiment 1 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 2a to 2d As can be seen from the figure, the optical imaging lens given in Example 1 can achieve good imaging quality. Specific Implementation Example 2

[0121] Figure 3This is a schematic diagram of the lens group structure of embodiment 2 of the optical imaging lens of the present invention. The optical imaging lens includes, in sequence from the object side to the image side along the optical axis: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7 and imaging surface S15.

[0122] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging surface S15.

[0123] Table 4 shows the basic parameters of the optical imaging lens in Example 2, where the units for radius of curvature, thickness, and focal length are all millimeters (mm).

[0124]

[0125] Table 4

[0126] As shown in Table 5, in Example 2, the total effective focal length f of the optical imaging lens is 15.16 mm, the distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S17 of the optical imaging lens on the optical axis is 16.53 mm, and half the diagonal length of the effective pixel area on the imaging surface S17 is ImgH = 5.32 mm. Half the maximum field of view (Semi-FOV) of the optical imaging lens is 19.1°.

[0127]

[0128] Table 5

[0129] In Example 2, the object-side surface and image-side surface of any one of the lenses, from the first lens E1 to the sixth lens E6, are aspherical. Table 6 shows the higher-order coefficients A4, A6, A8, and A6 that can be used for each aspherical mirror S1-S12 in Example 2. 10 A 12 A 14 A 16 A 18 A 20 A 22 and A 24 .

[0130] Face number A4 A6 A8 A10 A12 A14 S1 -1.9380E-01 -7.8823E-02 -1.4148E-02 3.5285E-04 1.0390E-03 2.5202E-04 S2 -4.1314E-02 -5.4854E-02 2.2610E-02 -3.5665E-03 -1.9283E-03 1.1655E-03 S3 3.8929E-02 1.8113E-02 2.2127E-02 2.2943E-03 -1.6050E-03 9.3585E-04 S4 -2.9072E-02 1.5734E-02 -3.9596E-04 4.0105E-03 -2.5035E-04 3.0676E-04 S5 -5.4114E-01 2.8631E-02 -1.3422E-03 2.5549E-03 -3.6571E-04 1.1595E-05 S6 -8.9954E-01 -7.7165E-02 -2.6433E-02 -5.1081E-03 -1.5664E-03 -4.7139E-04 S7 -6.1351E-02 1.8970E-03 -4.3820E-03 4.9563E-03 2.3617E-03 7.1563E-04 S8 -5.4249E-02 4.1541E-02 -9.6731E-03 3.2875E-03 1.6029E-03 4.7195E-04 S9 7.6016E-01 -1.7308E-02 7.1774E-03 -5.5530E-03 1.3913E-03 -4.5384E-04 S10 4.3005E-01 4.5969E-03 5.9633E-03 -3.4446E-03 4.2642E-04 -4.6280E-04 S11 -1.8992E-01 9.2683E-02 -8.4586E-03 -7.2451E-05 1.4581E-04 -3.0568E-04 S12 -1.3203E-01 3.7968E-02 4.5509E-03 -1.2026E-03 6.5538E-04 -3.3384E-04 Face number A16 A18 A20 A22 A24 S1 -7.3687E-05 -6.1290E-05 -1.2967E-05 0.0000E+00 0.0000E+00 S2 -3.4410E-04 3.9937E-05 -1.0590E-05 0.0000E+00 0.0000E+00 S3 -5.5360E-05 6.0665E-05 4.1792E-06 0.0000E+00 0.0000E+00 S4 6.1815E-05 4.3724E-05 -1.6372E-06 0.0000E+00 0.0000E+00 S5 2.3650E-05 9.4059E-06 -1.0358E-05 -2.8868E-06 1.6655E-06 S6 -1.4158E-04 -4.9830E-05 -2.5805E-05 -1.1883E-05 -2.2846E-06 S7 8.0662E-05 1.3976E-05 -1.0040E-05 -5.3850E-06 -4.5526E-06 S8 -5.6753E-06 4.4462E-05 1.5615E-05 9.3885E-06 -1.7805E-06 S9 1.2319E-04 -1.7800E-05 3.8227E-06 3.1055E-06 -1.8510E-06 S10 1.0972E-04 -1.8364E-05 1.1112E-05 1.1938E-07 -7.7374E-07 S11 2.1379E-04 -8.9935E-05 3.3852E-05 -1.2083E-05 2.8479E-06 S12 1.0222E-04 -3.1262E-05 7.5652E-06 9.7825E-08 -6.4027E-07

[0131] Table 6

[0132] Figure 4a The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 2 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 4b The astigmatism curve of the optical imaging lens of Embodiment 2 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 4c The distortion curve of the optical imaging lens of Example 2 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 4d The magnification chromatic aberration curve of the optical imaging lens of Embodiment 2 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 4a to 4d As shown, the optical imaging lens given in Example 2 can achieve good imaging quality. Specific Implementation Example 3

[0134] Figure 5 This is a schematic diagram of the lens group structure of embodiment 3 of the optical imaging lens of the present invention. The optical imaging lens includes, in sequence from the object side to the image side along the optical axis: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7 and imaging surface S15.

[0135] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being concave and its image-side surface S8 being convex. The fifth lens E5 has positive optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging surface S15.

[0136] Table 7 shows the basic parameters of the optical imaging lens in Example 3, where the units for radius of curvature, thickness, and focal length are all millimeters (mm).

[0137]

[0138] Table 7

[0139] As shown in Table 8, in Example 3, the total effective focal length of the optical imaging lens is f = 15.34 mm, the distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S17 of the optical imaging lens on the optical axis is 16.56 mm, and half the diagonal length of the effective pixel area on the imaging surface S17 is ImgH = 5.32 mm. Half the maximum field of view of the optical imaging lens is Semi-FOV = 18.9°.

[0140]

[0141]

[0142] Table 8

[0143] In Example 3, the object-side surface and image-side surface of any one of the lenses, from the first lens E1 to the sixth lens E6, are aspherical. Table 9 shows the higher-order coefficients A4, A6, A8, and A6 that can be used for each aspherical mirror S1-S12 in Example 3. 10 A 12 A 14 A 16 A 18 A 20 A 22 and A 24 .

[0144] Face number A4 A6 A8 A10 A12 A14 S1 -1.9380E-01 -7.8823E-02 -1.4148E-02 3.5285E-04 1.0390E-03 2.5202E-04 S2 -4.1314E-02 -5.4854E-02 2.2610E-02 -3.5665E-03 -1.9283E-03 1.1655E-03 S3 3.8929E-02 1.8113E-02 2.2127E-02 2.2943E-03 -1.6050E-03 9.3585E-04 S4 -2.9072E-02 1.5734E-02 -3.9596E-04 4.0105E-03 -2.5035E-04 3.0676E-04 S5 -5.4114E-01 2.8631E-02 -1.3422E-03 2.5549E-03 -3.6571E-04 1.1595E-05 S6 -8.9954E-01 -7.7165E-02 -2.6433E-02 -5.1081E-03 -1.5664E-03 -4.7139E-04 S7 -6.1351E-02 1.8970E-03 -4.3820E-03 4.9563E-03 2.3617E-03 7.1563E-04 S8 -5.4249E-02 4.1541E-02 -9.6731E-03 3.2875E-03 1.6029E-03 4.7195E-04 S9 7.6016E-01 -1.7308E-02 7.1774E-03 -5.5530E-03 1.3913E-03 -4.5384E-04 S10 4.3005E-01 4.5969E-03 5.9633E-03 -3.4446E-03 4.2642E-04 -4.6280E-04 S11 -1.8992E-01 9.2683E-02 -8.4586E-03 -7.2451E-05 1.4581E-04 -3.0568E-04 S12 -1.3203E-01 3.7968E-02 4.5509E-03 -1.2026E-03 6.5538E-04 -3.3384E-04 Face number A16 A18 A20 A22 A24 S1 -7.3687E-05 -6.1290E-05 -1.2967E-05 0.0000E+00 0.0000E+00 S2 -3.4410E-04 3.9937E-05 -1.0590E-05 0.0000E+00 0.0000E+00 S3 -5.5360E-05 6.0665E-05 4.1792E-06 0.0000E+00 0.0000E+00 S4 6.1815E-05 4.3724E-05 -1.6372E-06 0.0000E+00 0.0000E+00 S5 2.3650E-05 9.4059E-06 -1.0358E-05 -2.8868E-06 1.6655E-06 S6 -1.4158E-04 -4.9830E-05 -2.5805E-05 -1.1883E-05 -2.2846E-06 S7 8.0662E-05 1.3976E-05 -1.0040E-05 -5.3850E-06 -4.5526E-06 S8 -5.6753E-06 4.4462E-05 1.5615E-05 9.3885E-06 -1.7805E-06 S9 1.2319E-04 -1.7800E-05 3.8227E-06 3.1055E-06 -1.8510E-06 S10 1.0972E-04 -1.8364E-05 1.1112E-05 1.1938E-07 -7.7374E-07 S11 2.1379E-04 -8.9935E-05 3.3852E-05 -1.2083E-05 2.8479E-06 S12 1.0222E-04 -3.1262E-05 7.5652E-06 9.7825E-08 -6.4027E-07

[0145] Table 9

[0146] Figure 6a The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 3 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 6b The astigmatism curve of the optical imaging lens of Embodiment 3 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 6c The distortion curve of the optical imaging lens of Example 3 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 6d The magnification chromatic aberration curve of the optical imaging lens of Embodiment 3 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 6a to 6d As shown, the optical imaging lens given in Example 3 can achieve good imaging quality. Specific Implementation Example 4

[0148] Figure 7 This is a schematic diagram of the lens group structure of embodiment 4 of the optical imaging lens of the present invention. The optical imaging lens includes, in sequence from the object side to the image side along the optical axis: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7 and imaging surface S15.

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

[0150] Table 10 shows the basic parameters of the optical imaging lens in Example 4, where the units for radius of curvature, thickness, and focal length are all millimeters (mm).

[0151]

[0152] Table 10

[0153] As shown in Table 11, in Example 4, the total effective focal length of the optical imaging lens is f = 15.08 mm, the distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S17 of the optical imaging lens on the optical axis is TTL = 16.41 mm, and half the diagonal length of the effective pixel area on the imaging surface S17 is ImgH = 5.32 mm. Half the maximum field of view of the optical imaging lens is Semi-FOV = 19.2°.

[0154]

[0155]

[0156] Table 11

[0157] In Example 4, the object-side surface and image-side surface of any one of the lenses, from the first lens E1 to the sixth lens E6, are aspherical. Table 12 shows the higher-order coefficients A4, A6, A8, and A6 that can be used for each aspherical mirror S1-S12 in Example 4. 10 A 12 A 14 A 16 A 18 A 20 A 22 and A 24 .

[0158] Face number A4 A6 A8 A10 A12 A14 S1 -1.8430E-01 -7.3846E-02 -1.6129E-02 -1.0891E-03 7.7294E-04 3.2817E-04 S2 -2.1710E-02 -4.4421E-02 2.0313E-02 -4.1144E-03 -1.6235E-03 8.3732E-04 S3 7.7477E-02 2.1242E-02 2.2323E-02 2.5129E-03 -9.6206E-04 6.6526E-04 S4 -3.9046E-02 1.2520E-02 4.4122E-04 4.1997E-03 -4.6075E-04 3.4946E-04 S5 -5.4251E-01 3.5824E-02 -4.0523E-03 3.0047E-03 -7.0399E-04 1.1185E-04 S6 -8.1757E-01 -4.7867E-02 -2.0104E-02 -2.7782E-03 -1.1499E-03 -3.3606E-04 S7 -3.9694E-02 1.8187E-03 -6.7131E-03 2.4614E-03 1.4522E-03 3.7964E-04 S8 -5.3689E-02 3.6166E-02 -9.9571E-03 1.1128E-03 9.6584E-04 3.1050E-04 S9 7.4721E-01 -1.8717E-02 9.5538E-03 -5.4160E-03 1.4184E-03 -4.7392E-04 S10 4.8123E-01 4.3683E-03 6.9649E-03 -4.0305E-03 3.6314E-04 -5.4137E-04 S11 -2.1017E-01 9.5433E-02 -9.4495E-03 3.2687E-04 -1.0137E-04 -2.2305E-04 S12 -1.3530E-01 3.6952E-02 5.9759E-03 -1.9253E-03 9.3380E-04 -4.9973E-04 Face number A16 A18 A20 A22 A24 S1 -7.0669E-06 -4.5858E-05 -1.4378E-05 0.0000E+00 0.0000E+00 S2 -2.8231E-04 1.0781E-04 -4.7434E-05 0.0000E+00 0.0000E+00 S3 -3.2757E-05 1.2240E-04 1.2345E-05 0.0000E+00 0.0000E+00 S4 2.9811E-05 6.8918E-05 7.6487E-06 0.0000E+00 0.0000E+00 S5 -1.1761E-05 1.5797E-05 9.1716E-07 -5.3198E-06 7.8594E-07 S6 -1.1886E-04 -4.2556E-05 -1.4234E-05 -9.7578E-06 -3.2996E-06 S7 -2.0325E-05 -1.7483E-05 -7.6192E-06 1.4166E-06 -8.8276E-07 S8 -4.3837E-05 -1.0605E-05 -2.2291E-06 6.5689E-06 -3.1844E-07 S9 1.3306E-04 -4.4659E-05 8.3120E-06 1.4629E-06 -5.0280E-07 S10 1.4511E-04 -3.6291E-05 1.9484E-05 -1.7160E-06 -4.2390E-07 S11 1.8798E-04 -8.8285E-05 3.9258E-05 -1.6133E-05 4.4726E-06 S12 1.7566E-04 -6.6782E-05 2.4140E-05 -6.3979E-06 1.2392E-06

[0159] Table 12

[0160] Figure 8a The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 4 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 8b The astigmatism curve of the optical imaging lens of Embodiment 4 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 8c The distortion curve of the optical imaging lens of Example 4 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 8d The magnification chromatic aberration curve of the optical imaging lens of Embodiment 4 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 8a to 8d As shown, the optical imaging lens given in Example 4 can achieve good imaging quality. Specific Implementation Example 5

[0162] Figure 9 This is a schematic diagram of the lens group structure of embodiment 5 of the optical imaging lens of the present invention. The optical imaging lens includes, in sequence from the object side to the image side along the optical axis: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7 and imaging surface S15.

[0163] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has positive optical power, with its object-side surface S3 being concave and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging surface S15.

[0164] Table 13 shows the basic parameters of the optical imaging lens in Example 5, where the units for radius of curvature, thickness, and focal length are all millimeters (mm).

[0165]

[0166] Table 13

[0167] As shown in Table 14, in Example 5, the total effective focal length of the optical imaging lens is f = 14.12 mm, the distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S17 of the optical imaging lens on the optical axis is 15.70 mm, and half the diagonal length of the effective pixel area on the imaging surface S17 is ImgH = 5.32 mm. Half the maximum field of view of the optical imaging lens is Semi-FOV = 20.4°.

[0168]

[0169] Table 14

[0170] In Example 5, the object-side surface and image-side surface of any one of the lenses, from the first lens E1 to the sixth lens E6, are aspherical. Table 15 shows the higher-order coefficients A4, A6, A8, and A6 that can be used for each aspherical mirror S1-S12 in Example 5. 10 A 12 A 14 A 16 A 18 A 20 A 22 and A 24 .

[0171] Face number A4 A6 A8 A10 A12 A14 S1 -1.7045E-01 -7.3046E-02 -1.6915E-02 -1.4995E-03 6.9405E-04 4.0640E-04 S2 -2.2209E-02 -4.6334E-02 2.1566E-02 -3.8401E-03 -1.4197E-03 9.5494E-04 S3 6.2355E-02 1.4725E-02 1.7143E-02 8.1539E-04 -1.5361E-03 5.5833E-04 S4 -2.7677E-02 5.6483E-03 -5.1035E-03 4.5564E-03 -1.0749E-03 4.2454E-04 S5 -5.5176E-01 3.7914E-02 -2.2433E-03 2.4128E-03 -8.4615E-04 1.5844E-04 S6 -7.9679E-01 -4.4794E-02 -1.8449E-02 -4.1612E-03 -1.7104E-03 -5.5533E-04 S7 -3.9536E-02 -4.3280E-03 -8.4657E-03 -5.1699E-04 9.2731E-06 -4.3101E-05 S8 -6.3973E-02 3.1464E-02 -9.5538E-03 -1.1465E-03 7.3707E-06 -2.4872E-05 S9 7.4093E-01 -2.4106E-02 1.1904E-02 -6.3519E-03 1.4428E-03 -8.1273E-04 S10 4.6613E-01 7.1116E-04 6.6521E-03 -3.1269E-03 4.0701E-04 -6.7074E-04 S11 -2.0470E-01 9.1072E-02 -6.9775E-03 1.1453E-03 -3.9059E-04 -1.3862E-04 S12 -1.2601E-01 4.3328E-02 9.7893E-03 -1.9301E-03 1.3210E-03 -6.3330E-04 Face number A16 A18 A20 A22 A24 S1 3.6065E-05 -2.6451E-05 -1.2014E-05 0.0000E+00 0.0000E+00 S2 -2.4169E-04 5.7871E-05 -1.3322E-05 0.0000E+00 0.0000E+00 S3 -9.5930E-05 4.0664E-05 5.1246E-06 0.0000E+00 0.0000E+00 S4 -6.0957E-05 6.4155E-05 -2.1687E-06 0.0000E+00 0.0000E+00 S5 -1.8540E-05 1.4054E-05 4.9078E-06 -3.9707E-06 2.9930E-07 S6 -1.8340E-04 -5.0555E-05 -7.1472E-06 -6.1548E-06 -2.9632E-06 S7 -5.8658E-05 7.0075E-06 1.9223E-05 8.4590E-06 3.0785E-06 S8 -4.4845E-05 3.0545E-05 2.2328E-05 6.3993E-06 -5.9922E-06 S9 1.7392E-04 -5.0267E-05 2.6301E-05 -2.1792E-06 -1.7437E-06 S10 1.1154E-04 -3.3400E-05 2.8026E-05 4.1728E-07 -2.1113E-06 S11 1.6637E-04 -6.8791E-05 2.9973E-05 -1.2697E-05 2.4113E-06 S12 2.7360E-04 -9.3926E-05 3.4728E-05 -1.2389E-05 2.5878E-06

[0172] Table 15

[0173] Figure 10a The on-axis chromatic aberration curve of the optical imaging lens of Embodiment 5 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 10b The astigmatism curve of the optical imaging lens of Embodiment 5 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 10c The distortion curve of the optical imaging lens of Example 5 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 10d The magnification chromatic aberration curve of the optical imaging lens of Embodiment 5 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 10a to 10d As can be seen from the figure, the optical imaging lens given in Example 5 can achieve good imaging quality. Specific Implementation Example 6

[0175] Figure 11 This is a schematic diagram of the lens group structure of embodiment 6 of the optical imaging lens of the present invention. The optical imaging lens includes, in sequence from the object side to the image side along the optical axis: aperture stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, filter E7 and imaging surface S15.

[0176] The first lens E1 has positive optical power, with its object-side surface S1 being convex and its image-side surface S2 being convex. The second lens E2 has positive optical power, with its object-side surface S3 being convex and its image-side surface S4 being convex. The third lens E3 has negative optical power, with its object-side surface S5 being convex and its image-side surface S6 being concave. The fourth lens E4 has positive optical power, with its object-side surface S7 being convex and its image-side surface S8 being convex. The fifth lens E5 has negative optical power, with its object-side surface S9 being concave and its image-side surface S10 being convex. The sixth lens E6 has positive optical power, with its object-side surface S11 being convex and its image-side surface S12 being concave. The filter E7 has an object-side surface S13 and an image-side surface S14. Light from the object passes sequentially through surfaces S1 to S14 and is finally imaged onto the imaging surface S15.

[0177] Table 16 shows the basic parameters of the optical imaging lens in Example 6, where the units for radius of curvature, thickness, and focal length are all millimeters (mm).

[0178]

[0179] Table 16

[0180] As shown in Table 17, in Example 6, the total effective focal length of the optical imaging lens is f = 13.00 mm, the distance TTL from the object side surface S1 of the first lens E1 to the imaging surface S17 of the optical imaging lens on the optical axis is TTL = 13.80 mm, and half the diagonal length of the effective pixel area on the imaging surface S17 is ImgH = 5.32 mm. Half the maximum field of view of the optical imaging lens is Semi-FOV = 22.0°.

[0181]

[0182] Table 17

[0183] In Example 6, the object-side surface and image-side surface of any one of the lenses, from the first lens E1 to the sixth lens E6, are aspherical. Table 18 shows the higher-order coefficients A4, A6, A8, and A6 that can be used for each aspherical mirror S1-S12 in Example 6. 10 A 12 A 14 A 16 A 18 A 20 A 22 and A 24 .

[0184] Face number A4 A6 A8 A10 A12 A14 S1 -3.3273E-01 -1.1109E-01 -2.8683E-03 7.3300E-03 3.1920E-03 7.2032E-04 S2 -4.6656E-02 -7.1251E-02 1.3765E-02 7.4833E-03 6.8026E-03 1.2092E-03 S3 1.6530E-01 2.6029E-02 1.1491E-02 1.7080E-03 4.2176E-03 1.0302E-03 S4 -6.9570E-03 3.7264E-02 8.0081E-03 9.6252E-03 2.2099E-03 2.1649E-03 S5 -5.3916E-01 6.1809E-02 -6.4832E-03 3.8469E-03 -5.1180E-03 -3.2699E-04 S6 -8.6189E-01 -3.2726E-02 -2.0472E-02 -4.0826E-03 -4.0972E-03 -1.2222E-03 S7 -2.3510E-02 2.3647E-02 -7.4117E-04 2.6268E-05 2.0249E-04 -3.0586E-05 S8 2.5226E-02 5.1430E-02 -1.3045E-03 -2.2703E-05 1.6386E-04 -9.9110E-05 S9 7.7077E-01 -5.2096E-02 3.6714E-03 -8.3694E-03 1.6472E-03 -1.0489E-03 S10 5.0674E-01 6.3342E-03 -1.0320E-02 -3.9193E-03 -6.7445E-04 3.0636E-05 S11 -2.4917E-01 1.0637E-01 -3.1217E-03 -2.0234E-03 5.6701E-04 -4.5478E-04 S12 -2.4904E-01 5.5962E-02 1.5874E-02 -4.8264E-03 3.1891E-03 -1.6498E-03 Face number A16 A18 A20 A22 A24 S1 -1.3689E-04 -2.1712E-04 -6.2521E-05 0.0000E+00 0.0000E+00 S2 7.7206E-04 4.5761E-04 4.4673E-04 0.0000E+00 0.0000E+00 S3 6.2408E-04 -1.1964E-04 7.9532E-05 0.0000E+00 0.0000E+00 S4 6.0387E-04 2.0614E-04 1.0369E-04 0.0000E+00 0.0000E+00 S5 -6.4873E-04 -9.3059E-05 9.6587E-05 3.9230E-05 2.7496E-05 S6 -3.0405E-04 -4.1636E-05 4.1952E-05 2.4616E-05 6.9567E-06 S7 -1.0603E-05 -2.9453E-06 5.1603E-07 7.6830E-07 -5.6020E-07 S8 -5.9607E-05 -1.8877E-05 -1.8717E-05 -4.6358E-06 -8.9828E-06 S9 3.8288E-04 -1.0777E-04 8.5754E-05 2.5753E-06 2.1806E-05 S10 1.0716E-04 4.6108E-05 -9.0445E-06 1.4580E-05 -3.6856E-07 S11 3.6557E-04 -1.6777E-04 5.4714E-05 -1.3377E-05 2.1888E-06 S12 8.1170E-04 -3.8199E-04 1.6557E-04 -6.6887E-05 1.9889E-05

[0185] Table 18

[0186] Figure 12aThe on-axis chromatic aberration curve of the optical imaging lens of Embodiment 6 is shown, which represents the deviation of the focal point of light of different wavelengths after passing through the lens. Figure 12b The astigmatism curve of the optical imaging lens of Embodiment 6 is shown, which represents the meridional image plane curvature and the sagittal image plane curvature. Figure 12c The distortion curve of the optical imaging lens of Example 6 is shown, which represents the distortion magnitude value corresponding to different image heights. Figure 12d The magnification chromatic aberration curve of the optical imaging lens of Embodiment 6 is shown, which represents the deviation of different image heights on the imaging plane after light passes through the lens. According to Figures 12a to 12d As can be seen from the figure, the optical imaging lens given in Example 6 can achieve good imaging quality.

[0187] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, improvements, or equivalent substitutions made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An optical imaging lens, characterized in that, The optical imaging lens has six lenses with optical power, and the optical imaging lens includes, in sequence from the object side to the image side along the optical axis: Aperture; The first lens with positive optical power has a convex object side and a convex image side; A second lens with positive optical power; A third lens with negative optical power has a convex object side and a concave image side. The fourth lens has positive optical power and its image-side surface is convex. A fifth lens with positive or negative optical power has a concave object side and a convex image side. The sixth lens with positive optical power has a convex object side and a concave image side. Among them, the axial distance SAG61 between the intersection of the object side and the optical axis of the sixth lens and the vertex of the effective radius of the object side of the sixth lens and the axial distance SAG62 between the intersection of the image side and the optical axis of the sixth lens and the vertex of the effective radius of the image side of the sixth lens satisfy: 6.64≤(SAG61+SAG62) / (SAG61-SAG62)≤18.35; The effective focal length f3 of the third lens, the radius of curvature R5 of the object side of the third lens, and the radius of curvature R6 of the image side of the third lens satisfy: -1.44≤f3 / (R5+R6)≤-1.

12.

2. The optical imaging lens according to claim 1, characterized in that, The maximum field of view (Semi-FOV) of an optical imaging lens must satisfy the following condition: 18.9° ≤ Semi-FOV ≤ 22°.

3. The optical imaging lens according to claim 1, characterized in that, The axial distance from the object side of the first lens to the imaging plane: TTL and half the diagonal length of the effective pixel area on the imaging plane, ImgH, satisfy: 2.59≤TTL / ImgH≤3.

11.

4. The optical imaging lens according to claim 1, characterized in that, The axial distance SAG31 between the intersection of the object side of the third lens and the optical axis and the vertex of the effective radius of the object side of the third lens, and the axial distance SAG32 between the intersection of the image side of the third lens and the optical axis and the vertex of the effective radius of the image side of the third lens, satisfy: 2.42≤SAG32 / SAG31≤3.

55.

5. The optical imaging lens according to claim 1, characterized in that, The axial distance SAG51 between the intersection of the object side and the optical axis of the fifth lens and the vertex of the effective radius of the object side of the fifth lens, and the axial distance SAG52 between the intersection of the image side and the optical axis of the fifth lens and the vertex of the effective radius of the image side of the fifth lens, satisfy: 1.17≤SGA52 / SAG51≤1.

29.

6. The optical imaging lens according to claim 1, characterized in that, The center thickness CT1 and the edge thickness ET1 of the first lens on the optical axis satisfy the following condition: 2.18≤CT1 / ET1≤2.

9.

7. The optical imaging lens according to claim 1, characterized in that, The edge thickness ET3 of the third lens and the center thickness CT3 of the third lens on the optical axis satisfy the following condition: 1.72≤ET3 / CT3≤2.

52.

8. The optical imaging lens according to claim 1, characterized in that, The effective focal length f4 of the fourth lens and the radius of curvature R8 of the image side surface of the fourth lens satisfy: -2.4≤f4 / R8≤-1.

03.

9. The optical imaging lens according to claim 1, characterized in that, The effective focal length f1 of the first lens and the radius of curvature R1 of the object side surface of the first lens satisfy the following condition: 1.61≤f1 / R1≤1.

79.

10. The optical imaging lens according to claim 1, characterized in that, The Abbe number V3 of the third lens and the Abbe number V5 of the fifth lens satisfy: V3-V5=6.

7.

11. The optical imaging lens according to claim 1, characterized in that, Half the diagonal length of the effective pixel area on the imaging surface, ImgH, satisfies: ImgH = 5.32 mm.

12. The optical imaging lens according to claim 1, characterized in that: The effective pixel area diagonal length ImgH on the imaging surface and the effective focal length f of the optical imaging lens satisfy the following condition: 0.32≤ImgH / f≤0.41.

Images