Lens and module thereof

Abstract

The utility model relates to the field of optical lenses, and discloses a lens and a module thereof, which comprise seven lenses in sequence from an object side to an image side: a first lens with positive refractive power, a second lens with negative refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power and a fifth lens with negative refractive power, the lens comprises a first lens with positive refractive power, a second lens with negative refractive power, a sixth lens with positive refractive power, and a seventh lens with negative refractive power. The following relational expressions are satisfied:-8.00 < = (SAG51 / SD51 * R9) / (SAG72 / SD72 * R14) < =-3.30; hC71 / SD71 is greater than or equal to 0.80 and less than or equal to 0.95; 0.85 < = HC72 / SD72 < = 0.97; 1.10 < = (d10 + d12) / d11 < = 2.10.

Description

Technical Field

[0001] The utility model relates to the field of optical lenses, and particularly relates to a lens and a lens module applicable to handheld terminal devices such as smart phones and digital cameras, and imaging devices such as monitors, PC lenses, and vehicle-mounted lenses. Background Art

[0002] In recent years, with the rise of various intelligent devices, the demand for miniaturized lenses has been increasing day by day. In addition, due to the reduction of the pixel size of the photosensitive device, and the current trend of electronic products towards a good-function, thin, light, and portable appearance, miniaturized lenses with good imaging quality have become the mainstream in the current market. To obtain better imaging quality, a multi-lens structure is often adopted. Moreover, with the development of technology and the increasing diversification of user needs, in the case where the pixel area of the photosensitive device is continuously reduced and the system's requirements for imaging quality are continuously improved, a seven-lens structure has gradually emerged in lens design. There is an urgent need for an imaging lens with high relative illumination, wide-angle, and easy processing. Summary of the Utility Model

[0003] Aiming at the above problems, the purpose of the present utility model is to provide a lens that meets the design requirements of high relative illumination, wide-angle, and easy processing.

[0004] To achieve the above purpose, the technical solution of the present utility model provides a lens, which comprises a total of seven lenses. The seven lenses are, in order from the object side to the image side: a first lens with positive refractive power, a second lens with negative refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, a fifth lens with negative refractive power, a sixth lens with positive refractive power, and a seventh lens with negative refractive power. The lens further includes an aperture. The object side surface of the first lens is convex at the paraxial region, and the image side surface is concave at the paraxial region. The object side surface of the second lens is convex at the paraxial region, and the image side surface is concave at the paraxial region. The object side surface of the third lens is convex at the paraxial region, and the image side surface is concave at the paraxial region. The object side surface of the fourth lens is convex at the paraxial region. The object side surface of the fifth lens is concave at the paraxial region, and the image side surface is concave at the paraxial region. The object side surface of the sixth lens is convex at the paraxial region, and the image side surface is concave at the paraxial region. The object side surface of the seventh lens is convex at the paraxial region, and the image side surface is concave at the paraxial region.

[0005] Among them, the maximum optical radius of the object side surface of the fifth lens is SD51, the sagittal height at the maximum optical radius of the object side surface of the fifth lens is SAG51, the maximum optical radius of the image side surface of the seventh lens is SD72, the sagittal height at the maximum optical radius of the image side surface of the seventh lens is SAG72, the central curvature radius of the object side surface of the fifth lens at the paraxial region is R9, the central curvature radius of the image side surface of the seventh lens at the paraxial region is R14, the perpendicular height from the intersection point of the chief ray of the 1.0 field of view and the object side surface of the seventh lens to the optical axis is HC71, the maximum optical radius of the object side surface of the seventh lens is SD71, the perpendicular height from the intersection point of the chief ray of the 1.0 field of view and the image side surface of the seventh lens to the optical axis is HC72, the maximum optical radius of the image side surface of the seventh lens is SD72, the on-axis distance between the fifth lens and the sixth lens is d10, the on-axis distance between the sixth lens and the seventh lens is d12, the on-axis thickness of the sixth lens is d11, the on-axis distance between the third lens and the fourth lens is d6, the overall optical length of the lens is TTL, the focal length of the sixth lens is f6, the focal length of the seventh lens is f7, the central curvature radius of the object side surface of the first lens at the paraxial region is R1, the central curvature radius of the image side surface of the first lens at the paraxial region is R2, the focal length of the lens is f, and the following relational expressions are satisfied:

[0006] -8.00 ≤ (SAG51 / SD51 * R9) / (SAG72 / SD72 * R14) ≤ -3.30;

[0007] 0.80 ≤ HC71 / SD71 ≤ 0.95;

[0008] 0.85 ≤ HC72 / SD72 ≤ 0.97;

[0009] 1.10 ≤ (d10 + d12) / d11 ≤ 2.10;

[0010] 0.007 ≤ d6 / TTL ≤ 0.013;

[0011] -0.85 ≤ f6 / f7 ≤ -0.45;

[0012] 1.00 ≤ (R1 + R2) / f ≤ 2.10.

[0013] Preferably, the distance in the optical axis direction from the aperture to the center of the object side surface of the first lens is TEP, the sagittal height at the maximum optical radius of the object side surface of the first lens is SAG11, the focal length of the first lens is f1, and the following relational expression is satisfied: 0.06 ≤ |TEP / SAG11| * (f / f1) ≤ 0.09.

[0014] Preferably, the following relationship is satisfied: -7.10 ≤ (SAG51 / SD51 * R9) / (SAG72 / SD72 * R14) ≤ -4.05.

[0015] Preferably, the following relationship is satisfied: 1.30 ≤ (d10 + d12) / d11 ≤ 1.91.

[0016] Preferably, the following relationship is satisfied: -0.76 ≤ f6 / f7 ≤ -0.52.

[0017] Preferably, the following relationship is satisfied: 1.15 ≤ (R1 + R2) / f ≤ 1.85.

[0018] Preferably, the on-axis distance between the first lens and the second lens is d2, and the on-axis distance between the fourth lens and the fifth lens is d8. The following relationship is satisfied: 1.95 ≤ d8 / d2 ≤ 4.05.

[0019] Preferably, the following relationship is satisfied: 2.44 ≤ d8 / d2 ≤ 3.40.

[0020] Preferably, the first lens is a glass lens.

[0021] The present invention also provides a lens. The lens comprises seven lenses in total. The seven lenses are, in order from the object side to the image side: a first lens with positive refractive power, a second lens with negative refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, a fifth lens with negative refractive power, a sixth lens with positive refractive power, and a seventh lens with negative refractive power. The lens further includes an aperture. The object side surface of the first lens is convex at the paraxial region, and the image side surface is concave at the paraxial region. The object side surface of the second lens is convex at the paraxial region, and the image side surface is concave at the paraxial region. The object side surface of the third lens is convex at the paraxial region, and the image side surface is concave at the paraxial region. The object side surface of the fourth lens is convex at the paraxial region. The object side surface of the fifth lens is concave at the paraxial region, and the image side surface is concave at the paraxial region. The object side surface of the sixth lens is convex at the paraxial region, and the image side surface is concave at the paraxial region. The object side surface of the seventh lens is convex at the paraxial region, and the image side surface is concave at the paraxial region.

[0022] Among them, the maximum optical radius of the object side surface of the fifth lens is SD51, the sag at the maximum optical radius of the object side surface of the fifth lens is SAG51, the maximum optical radius of the image side surface of the seventh lens is SD72, the sag at the maximum optical radius of the image side surface of the seventh lens is SAG72, the central curvature radius of the object side surface of the fourth lens at the paraxial region is R7, the central curvature radius of the object side surface of the fifth lens at the paraxial region is R9, the central curvature radius of the image side surface of the seventh lens at the paraxial region is R14, the perpendicular height from the intersection point of the chief ray of the 1.0 field of view and the object side surface of the seventh lens to the optical axis is HC71, the maximum optical radius of the object side surface of the seventh lens is SD71, the perpendicular height from the intersection point of the chief ray of the 1.0 field of view and the image side surface of the seventh lens to the optical axis is HC72, the maximum optical radius of the image side surface of the seventh lens is SD72, the on-axis distance between the fifth lens and the sixth lens is d10, the on-axis distance between the sixth lens and the seventh lens is d12, the on-axis thickness of the sixth lens is d11, the focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the focal length of the lens is f, the combined focal length of the first lens and the second lens is f12, and the following relational expressions are satisfied:

[0023] -8.00 ≤ (SAG51 / SD51 * R9) / (SAG72 / SD72 * R14) ≤ -3.30;

[0024] 0.80 ≤ HC71 / SD71 ≤ 0.95;

[0025] 0.85 ≤ HC72 / SD72 ≤ 0.97;

[0026] 1.10 ≤ (d10 + d12) / d11 ≤ 2.10;

[0027] -0.88 ≤ f1 / (f2 - f3) ≤ -0.05;

[0028] 1.10 ≤ f12 / f ≤ 1.60;

[0029] 2.20 ≤ f4 / R7 + f5 / R9 ≤ 3.80.

[0030] Preferably, the following relational expression is satisfied: -0.75 ≤ f1 / (f2 - f3) ≤ -0.06.

[0031] Preferably, the following relational expression is satisfied: 1.28 ≤ f12 / f ≤ 1.36.

[0032] Preferably, the following relational expression is satisfied: 2.70 ≤ f4 / R7 + f5 / R9 ≤ 3.20.

[0033] Preferably, the following relationship is satisfied: -7.10 ≤ (SAG51 / SD51*R9) / (SAG72 / SD72*R14) ≤ -4.05.

[0034] Preferably, the following relationship is satisfied: 1.30 ≤ (d10 + d12) / d11 ≤ 1.91.

[0035] Preferably, the focal length of the sixth lens is f6, and the focal length of the seventh lens is f7, and the following relationship is satisfied: -0.85 ≤ f6 / f7 ≤ -0.45.

[0036] Preferably, the following relationship is satisfied: -0.76 ≤ f6 / f7 ≤ -0.52.

[0037] Preferably, the central curvature radius of the object side surface of the first lens at the paraxial region is R1, the central curvature radius of the image side surface of the first lens at the paraxial region is R2, and the focal length of the lens is f, and the following relationship is satisfied: 1.00 ≤ (R1 + R2) / f ≤ 2.10.

[0038] Preferably, the following relationship is satisfied: 1.15 ≤ (R1 + R2) / f ≤ 1.85.

[0039] Preferably, the focal length of the sixth lens is f6, and the following relationship is satisfied: 1.65 ≤ |f / f5| + |f / f6| ≤ 2.69.

[0040] Preferably, the following relationship is satisfied: 1.96 ≤ |f / f5| + |f / f6| ≤ 2.28.

[0041] Preferably, the first lens is a glass lens.

[0042] The present utility model further provides a lens module including the above lens. Among them, each of the first to seventh lenses includes an optical portion for imaging and a structural portion surrounding the optical portion. The second lens includes a second optical portion for imaging and a second structural portion surrounding the second optical portion. The third lens includes a third optical portion for imaging and a third structural portion surrounding the third optical portion. The second structural portion includes a first surface close to the image side. The third structural portion includes a second surface close to the object side. The first surface includes a first inclined surface close to the second optical portion and a second inclined surface provided on the side of the first inclined surface away from the second optical portion. The second surface includes a third inclined surface close to the third optical portion and a fourth inclined surface provided on the side of the third inclined surface away from the third optical portion. The included angle between the first inclined surface and the optical axis is ANG1, and the included angle between the fourth inclined surface and the optical axis is ANG4, and the following relationship is satisfied: |ANG1 - ANG4| ≤ 30°.

[0043] Preferably, the included angle between the second inclined surface and the optical axis is ANG2, and the included angle between the third inclined surface and the optical axis is ANG3, satisfying the following relational expression: |ANG2 - ANG3| ≤ 10°.

[0044] Preferably, the first inclined surface inclines from the inside to the outside in the direction close to the object side, the radius of curvature of the image side surface of the second lens at the paraxial region is R4, and the maximum optical radius of the image side surface of the second lens is SD22, satisfying the following relational expression: 3.00 ≤ R4 / SD22 * tan(ANG1) ≤ 5.00.

[0045] Preferably, the third inclined surface inclines from the inside to the outside in the direction close to the image side, the radius of curvature of the object side surface of the third lens at the paraxial region is R5, and the maximum optical radius of the object side surface of the third lens is SD31, satisfying the following relational expression: 1.50 ≤ R5 / SD31 * cos(ANG3) ≤ 4.00.

[0046] The beneficial effects of the present utility model are as follows: The lens according to the present utility model has excellent optical characteristics, has high relative illumination, wide-angle characteristics, and is easy to process, and is particularly suitable for mobile phone camera lens modules, WEB camera lenses, and vehicle-mounted lenses composed of imaging elements such as CCDs and CMOSs for high pixels. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts, where:

[0048] Figure 1 is a schematic structural diagram of the lens according to the first embodiment of the present utility model;

[0049] Figure 2 is Figure 1 a schematic diagram of the axial aberration of the shown lens;

[0050] Figure 3 is Figure 1 a schematic diagram of the lateral chromatic aberration of the shown lens;

[0051] Figure 4 is Figure 1 a schematic diagram of the field curvature and distortion of the shown lens;

[0052] Figure 5 is a schematic structural diagram of the lens according to the second embodiment of the present utility model;

[0053] Figure 6Yes Figure 5 Axial aberration schematic diagram of the shown lens;

[0054] Figure 7 Yes Figure 5 Lateral color aberration schematic diagram of the shown lens;

[0055] Figure 8 Yes Figure 5 Field curvature and distortion schematic diagram of the shown lens;

[0056] Figure 9 Structural schematic diagram of the lens of the third embodiment of the present invention;

[0057] Figure 10 Yes Figure 9 Axial aberration schematic diagram of the shown lens;

[0058] Figure 11 Yes Figure 9 Lateral color aberration schematic diagram of the shown lens;

[0059] Figure 12 Yes Figure 9 Field curvature and distortion schematic diagram of the shown lens;

[0060] Figure 13 Structural schematic diagram of the lens of the fourth embodiment of the present invention;

[0061] Figure 14 Yes Figure 13 Axial aberration schematic diagram of the shown lens;

[0062] Figure 15 Yes Figure 13 Lateral color aberration schematic diagram of the shown lens;

[0063] Figure 16 Yes Figure 13 Field curvature and distortion schematic diagram of the shown lens;

[0064] Figure 17 Structural schematic diagram of the lens of the fifth embodiment of the present invention;

[0065] Figure 18 Yes Figure 17 Axial aberration schematic diagram of the shown lens;

[0066] Figure 19 Yes Figure 17 Lateral color aberration schematic diagram of the shown lens;

[0067] Figure 20 Yes Figure 17 Field curvature and distortion schematic diagram of the shown lens;

[0068] Figure 21 Structural schematic diagram of the lens of the sixth embodiment of the present invention;

[0069] Figure 22 is Figure 21 The schematic diagram of the axial aberration of the lens shown;

[0070] Figure 23 is Figure 21 The schematic diagram of the lateral chromatic aberration of the lens shown;

[0071] Figure 24 is Figure 21 The schematic diagram of the field curvature and distortion of the lens shown;

[0072] Figure 25 is the schematic diagram of the structure of the lens of the seventh embodiment of the present utility model;

[0073] Figure 26 is Figure 25 The schematic diagram of the axial aberration of the lens shown;

[0074] Figure 27 is Figure 25 The schematic diagram of the lateral chromatic aberration of the lens shown;

[0075] Figure 28 is Figure 25 The schematic diagram of the field curvature and distortion of the lens shown;

[0076] Figure 29 is the schematic diagram of the structure of the lens of the eighth embodiment of the present utility model;

[0077] Figure 30 is Figure 29 The schematic diagram of the axial aberration of the lens shown;

[0078] Figure 31 is Figure 29 The schematic diagram of the lateral chromatic aberration of the lens shown;

[0079] Figure 32 is Figure 29 The schematic diagram of the field curvature and distortion of the lens shown;

[0080] Figure 33 is the schematic diagram of the structure of the lens module of the present utility model;

[0081] Figure 34 is Figure 33 The schematic diagram of the structure of the second lens in;

[0082] Figure 35 is Figure 33 The schematic diagram of the structure of the third lens in. Specific embodiments

[0083] To make the objectives, technical solutions, and advantages of the present utility model clearer, the following will elaborate on each embodiment of the present utility model in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that in each embodiment of the present utility model, many technical details are provided to help readers better understand the present utility model. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed by the present utility model can still be achieved.

[0084] Referring to Figure 1-32 , the technical solution of the present utility model provides a lens 10, 20, 30, 40, 50, 60, 70, 80. Figure 1 , 5 As shown in FIGS. 9, 13, 17, 21, 25, 29, the lenses 10, 20, 30, 40, 50, 60, 70, 80 of the present utility model each include seven lenses. Specifically, the lenses, from the object side to the image side in sequence, are: aperture S1, first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, sixth lens L6, seventh lens L7. Optical elements such as an optical filter (filter) GF can be provided between the seventh lens L7 and the image plane Si.

[0085] Referring to Figure 33-35 , the technical solution of the present utility model further provides a lens module 100. Each of the first to seventh lenses includes an optical portion for imaging and a structural portion surrounding the optical portion. The second lens L2 includes a second optical portion L21 for imaging and a second structural portion L22 surrounding the second optical portion L21. The third lens L3 includes a third optical portion L31 for imaging and a third structural portion L32 surrounding the third optical portion L31. The second structural portion L22 includes a first surface L23 close to the image side. The third structural portion L32 includes a second surface L33 close to the object side. The first surface L23 includes a first inclined surface L231 close to the second optical portion L21 and a second inclined surface L232 provided on the side of the first inclined surface L231 away from the second optical portion L21. The second surface L23 includes a third inclined surface L331 close to the third optical portion L31 and a fourth inclined surface L332 provided on the side of the third inclined surface L331 away from the third optical portion L31. The angle between the first inclined surface L231 and the optical axis X is ANG1, and the angle between the fourth inclined surface L332 and the optical axis X is ANG4, satisfying the following relationship: |ANG1 - ANG4| ≤ 30°.

[0086] Define the angle between the second inclined plane L232 and the optical axis X as ANG2, and the angle between the third inclined plane L331 and the optical axis X as ANG3, satisfying the following relational expression: |ANG2 - ANG3| ≤ 10°.

[0087] The first inclined plane L231 inclines from the inside to the outside in the direction close to the object side. Define the radius of curvature of the image side surface of the second lens at the paraxial region as R4, and the maximum optical radius of the image side surface of the second lens as SD22, satisfying the following relational expression: 3.00 ≤ R4 / SD22 * tan(ANG1) ≤ 5.00. When the image side surface of the second lens is concave, the first inclined plane inclines towards the object side, effectively controlling the height difference and thickness difference between the optical part and the structural part, which is more conducive to molding. At the same time, the control of the inclination angle is beneficial to reducing stray light.

[0088] The third inclined plane L331 inclines from the inside to the outside in the direction close to the image side. Define the radius of curvature of the object side surface of the third lens at the paraxial region as R5, and the maximum optical radius of the object side surface of the third lens as SD31, satisfying the following relational expression: 1.50 ≤ R5 / SD31 * cos(ANG3) ≤ 4.00. The third inclined plane inclines towards the image side, effectively controlling the height difference and thickness difference between the optical part and the structural part, which is more conducive to molding. At the same time, the control of the inclination angle is beneficial to reducing stray light.

[0089] The first lens L1 is made of glass, the second lens L2 is made of plastic, the third lens L3 is made of plastic, the fourth lens L4 is made of plastic, the fifth lens L5 is made of plastic, the sixth lens L6 is made of plastic, and the seventh lens L7 is made of plastic. Each lens can also be made of other materials.

[0090] The first lens has a positive refractive power. Its object side surface is convex at the paraxial region, and its image side surface is concave at the paraxial region. The second lens has a negative refractive power. Its object side surface is convex at the paraxial region, and its image side surface is concave at the paraxial region. The third lens has a negative refractive power. Its object side surface is convex at the paraxial region, and its image side surface is concave at the paraxial region. The fourth lens has a positive refractive power. Its object side surface is convex at the paraxial region, and its image side surface is convex or concave at the paraxial region. The fifth lens has a negative refractive power. Its object side surface is concave at the paraxial region, and its image side surface is concave at the paraxial region. The sixth lens has a positive refractive power. Its object side surface is convex at the paraxial region, and its image side surface is concave at the paraxial region. The seventh lens has a negative refractive power. Its object side surface is convex at the paraxial region, and its image side surface is concave at the paraxial region.

[0091] The object side surfaces and image side surfaces of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7 are all aspherical surfaces.

[0092] Define the maximum optical radius of the object side of the fifth lens as SD51, the sagittal height at the maximum optical radius of the object side of the fifth lens as SAG51, the maximum optical radius of the image side of the seventh lens as SD72, the sagittal height at the maximum optical radius of the image side of the seventh lens as SAG72, the central curvature radius of the object side of the fifth lens at the paraxial region as R9, and the central curvature radius of the image side of the seventh lens at the paraxial region as R14. The following relational expression is satisfied: -8.00 ≤ (SAG51 / SD51 * R9) / (SAG72 / SD72 * R14) ≤ -3.30. Within this range, both the object side of the fifth lens and the object side of the seventh lens have surface shapes that are easier to process, improving the processability. Preferably, -7.10 ≤ (SAG51 / SD51 * R9) / (SAG72 / SD72 * R14) ≤ -4.05. Herein, the sagittal height refers to the distance along the optical axis from a point on the surface to the central point of the surface on the optical axis, which is positive on the right side of the central point and negative on the left side of the central point.

[0093] Define the perpendicular height from the intersection point of the chief ray of the 1.0 field of view and the object side of the seventh lens to the optical axis as HC71, and the maximum optical radius of the object side of the seventh lens as SD71. The following relational expression is satisfied: 0.80 ≤ HC71 / SD71 ≤ 0.95; within this range, while improving the relative illuminance of the peripheral field of view, a sufficiently large field of view angle is ensured.

[0094] Define the perpendicular height from the intersection point of the chief ray of the 1.0 field of view and the image side of the seventh lens to the optical axis as HC72, and the maximum optical radius of the image side of the seventh lens as SD72. The following relational expression is satisfied: 0.85 ≤ HC72 / SD72 ≤ 0.97. Within this range, while improving the relative illuminance of the peripheral field of view, a sufficiently large field of view angle is ensured.

[0095] Define the on-axis distance between the fifth lens and the sixth lens as d10, the on-axis distance between the sixth lens and the seventh lens as d12, and the on-axis thickness of the sixth lens as d11. The following relational expression is satisfied: 1.10 ≤ (d10 + d12) / d11 ≤ 2.10. By reasonably controlling the central thickness of the sixth lens and the front and rear air spaces, it is beneficial to improve the assembly yield of the last three lenses. Preferably, 1.30 ≤ (d10 + d12) / d11 ≤ 1.91.

[0096] Define the on-axis distance between the third lens and the fourth lens as d6, and the total optical length of the lens as TTL. The following relational expression is satisfied: 0.007 ≤ d6 / TTL ≤ 0.013. By reasonably controlling the ratio of the on-axis distance between the third lens and the fourth lens to the total optical length, it is beneficial to achieve ultra-thinness.

[0097] Define the focal length of the sixth lens as f6 and the focal length of the seventh lens as f7, satisfying the following relational expression: -0.85 ≤ f6 / f7 ≤ -0.45. The refractive power of the sixth lens and the seventh lens can be adjusted, which helps to compress the volume and correct aberrations. Preferably, -0.76 ≤ f6 / f7 ≤ -0.52 is satisfied.

[0098] Define the central curvature radius of the object side surface of the first lens at the paraxial region as R1, the central curvature radius of the image side surface of the first lens at the paraxial region as R2, and the focal length of the lens as f, satisfying the following relational expression: 1.00 ≤ (R1 + R2) / f ≤ 2.10. Within this range, it is beneficial to shorten the total length of the system. Preferably, 1.15 ≤ (R1 + R2) / f ≤ 1.85 is satisfied.

[0099] Define the distance along the optical axis from the aperture to the center of the object side surface of the first lens as TEP, the sagitta at the maximum optical radius of the object side surface of the first lens as SAG11, and the focal length of the first lens as f1, satisfying the following relational expression: 0.06 ≤ |TEP / SAG11| * (f / f1) ≤ 0.09. Within this range, the aperture protrudes, and the external space of the aperture is larger, which is beneficial to the structural design of the variable aperture.

[0100] Define the on-axis distance between the first lens and the second lens as d2, and the on-axis distance between the fourth lens and the fifth lens as d8, satisfying the following relational expression: 1.95 ≤ d8 / d2 ≤ 4.05. The air gap between the lenses can be reasonably controlled, enabling the system to have both high imaging quality and good processing characteristics. Preferably, 2.44 ≤ d8 / d2 ≤ 3.40 is satisfied.

[0101] Define the focal length of the first lens as f1, the focal length of the second lens as f2, and the focal length of the third lens as f3, satisfying the following relational expression: -0.88 ≤ f1 / (f2 - f3) ≤ -0.05. Within this range, it is beneficial to correct chromatic aberration and achieve the balance of various aberrations simultaneously. Preferably, -0.75 ≤ f1 / (f2 - f3) ≤ -0.06 is satisfied.

[0102] Define the focal length of the lens as f, and the combined focal length of the first lens and the second lens as f12, satisfying the following relational expression: 1.10 ≤ f12 / f ≤ 1.60. By reasonably configuring the focal lengths of the first lens L1 and the second lens L2, chromatic aberration can be eliminated, spherical aberration can be reduced, astigmatism can be corrected simultaneously, and the resolving power can be improved. Preferably, 1.28 ≤ f12 / f ≤ 1.36 is satisfied.

[0103] Define the focal length of the fourth lens as f4, the focal length of the fifth lens as f5, the central curvature radius of the object side surface of the fourth lens at the paraxial region as R7, and the central curvature radius of the object side surface of the fifth lens at the paraxial region as R9. The following relational expressions are satisfied: 2.20 ≤ f4 / R7 + f5 / R9 ≤ 3.80. By reasonably controlling the ratio of the curvature radius and the focal length of the object side surfaces of the fourth lens and the fifth lens, it is beneficial to achieve wide-angle while improving the processing yield of the fourth lens and the fifth lens. Preferably, 2.70 ≤ f4 / R7 + f5 / R9 ≤ 3.20.

[0104] Define the focal length of the fifth lens as f5, the focal length of the sixth lens as f6, and the focal length of the lens as f. The following relational expressions are satisfied: 1.65 ≤ |f / f5| + |f / f6| ≤ 2.69. By reasonably configuring the optical power of each lens, it is beneficial to achieve the imaging effect of high pixels. Preferably, 1.96 ≤ |f / f5| + |f / f6| ≤ 2.28.

[0105] Define the first lens as a glass lens. By using the combination of glass and resin lenses, it plays a role in reducing chromatic aberration and improving the performance of the optical camera lens.

[0106] Compared with the prior art, the lens provided by the present utility model is configured with -8.00 ≤ (SAG51 / SD51*R9) / (SAG72 / SD72*R14) ≤ -3.30;

[0107] 0.80 ≤ HC71 / SD71 ≤ 0.95;

[0108] 0.85 ≤ HC72 / SD72 ≤ 0.97;

[0109] 1.10 ≤ (d10 + d12) / d11 ≤ 2.10;

[0110] 0.007 ≤ d6 / TTL ≤ 0.013;

[0111] -0.85 ≤ f6 / f7 ≤ -0.45;

[0112] 1.00 ≤ (R1 + R2) / f ≤ 2.10, and the technical effects of easy processing, high relative illumination, wide-angle, high assembly yield, and ultra-thin can be achieved.

[0113] Compared with the prior art, the lens provided by the present utility model is configured with -8.00 ≤ (SAG51 / SD51*R9) / (SAG72 / SD72*R14) ≤ -3.30;

[0114] 0.80 ≤ HC71 / SD71 ≤ 0.95;

[0115] 0.85 ≤ HC72 / SD72 ≤ 0.97;

[0116] 1.10 ≤ (d10 + d12) / d11 ≤ 2.10;

[0117] -0.88 ≤ f1 / (f2 - f3) ≤ -0.05;

[0118] 1.10 ≤ f12 / f ≤ 1.60;

[0119] 2.20 ≤ f4 / R7 + f5 / R9 ≤ 3.80 can achieve the technical effects of easy processing, high relative illumination, wide angle, small chromatic aberration, small spherical aberration, small astigmatism, high resolution, and high processing yield.

[0120] The following will illustrate the lens of the present utility model with examples. The symbols recorded in each example are as follows. The units of focal length, axial distance, central radius of curvature, and axial thickness are mm.

[0121] TTL: The total optical length of the lens (the axial distance from the object side of the first lens L1 to the image plane Si), unit: mm;

[0122] Aperture value FNO: It refers to the ratio of the effective focal length of the lens to the entrance pupil diameter.

[0123] Next, the technical solutions of the present utility model will be specifically described in eight embodiments. When exceeding the range of the above conditional formulas, the technical effects of the present utility model cannot be achieved.

[0124] (The first embodiment)

[0125] Tables 1 and 2 show the design data of the lens 10 of the first embodiment of the present utility model.

[0126] [Table 1]

[0127]

[0128] Among them, the meanings of each symbol are as follows.

[0129] S1: Aperture;

[0130] R: The radius of curvature at the center of the optical surface;

[0131] R1: The central radius of curvature of the object side of the first lens L1 at the paraxial region;

[0132] R2: The central radius of curvature of the image side of the first lens L1 at the paraxial region;

[0133] R3: The central radius of curvature of the object side of the second lens L2 at the paraxial region;

[0134] R4: The central radius of curvature of the image side of the second lens L2 at the paraxial region;

[0135] R5: The central radius of curvature of the object side of the third lens L3 at paraxial region;

[0136] R6: The central radius of curvature of the image side of the third lens L3 at paraxial region;

[0137] R7: The central radius of curvature of the object side of the fourth lens L4 at paraxial region;

[0138] R8: The central radius of curvature of the image side of the fourth lens L4 at paraxial region;

[0139] R9: The central radius of curvature of the object side of the fifth lens L5 at paraxial region;

[0140] R10: The central radius of curvature of the image side of the fifth lens L5 at paraxial region;

[0141] R11: The central radius of curvature of the object side of the sixth lens L6 at paraxial region;

[0142] R12: The central radius of curvature of the image side of the sixth lens L6 at paraxial region;

[0143] R13: The central radius of curvature of the object side of the seventh lens L7 at paraxial region;

[0144] R14: The central radius of curvature of the image side of the seventh lens L7 at paraxial region;

[0145] R15: The central radius of curvature of the object side of the optical filter GF;

[0146] R16: The central radius of curvature of the image side of the optical filter GF;

[0147] d: The on-axis thickness of the lens, the on-axis distance between lenses;

[0148] d0: The on-axis distance from the aperture S1 to the object side of the first lens L1;

[0149] d1: The on-axis thickness of the first lens L1;

[0150] d2: The on-axis distance from the image side of the first lens L1 to the object side of the second lens L2;

[0151] d3: The on-axis thickness of the second lens L2;

[0152] d4: The on-axis distance from the image side of the second lens L2 to the object side of the third lens L3;

[0153] d5: The on-axis thickness of the third lens L3;

[0154] d6: The on-axis distance from the image side of the third lens L3 to the object side of the fourth lens L4;

[0155] d7: The on-axis thickness of the fourth lens L4;

[0156] d8: The on-axis distance from the image side of the fourth lens L4 to the object side of the fifth lens L5;

[0157] d9: The on-axis thickness of the fifth lens L5;

[0158] d10: The on-axis distance from the image side of the fifth lens L5 to the object side of the sixth lens L6;

[0159] d11: The on-axis thickness of the sixth lens L6;

[0160] d12: The on-axis distance from the image side of the sixth lens L6 to the object side of the seventh lens L7;

[0161] d13: The on-axis thickness of the seventh lens L7;

[0162] d14: The on-axis distance from the image side of the seventh lens L7 to the object side of the optical filter GF;

[0163] d15: The on-axis thickness of the optical filter GF;

[0164] d16: The on-axis distance from the image side of the optical filter GF to the image plane Si;

[0165] nd: The refractive index of the d-line (the d-line is green light with a wavelength of 550 nm);

[0166] nd1: The refractive index of the d-line of the first lens L1;

[0167] nd2: The refractive index of the d-line of the second lens L2;

[0168] nd3: The refractive index of the d-line of the third lens L3;

[0169] nd4: The refractive index of the d-line of the fourth lens L4;

[0170] nd5: The refractive index of the d-line of the fifth lens L5;

[0171] nd6: The refractive index of the d-line of the sixth lens L6;

[0172] nd7: The refractive index of the d-line of the seventh lens L7;

[0173] ndg: The refractive index of the d-line of the optical filter GF;

[0174] vd: The Abbe number;

[0175] v1: The Abbe number of the first lens L1;

[0176] v2: The Abbe number of the second lens L2;

[0177] v3: Abbe number of the third lens L3;

[0178] v4: Abbe number of the fourth lens L4;

[0179] v5: Abbe number of the fifth lens L5;

[0180] v6: Abbe number of the sixth lens L6;

[0181] v7: Abbe number of the seventh lens L7;

[0182] vg: Abbe number of the optical filter GF.

[0183] Table 2 shows the aspherical data of each lens in the lens 10 of the first embodiment of the present utility model.

[0184]

Table 2

[0185]

[0186]

[0187] For convenience, the aspherical surfaces of each lens use the aspherical surface shown in the following formula (1). However, the present utility model is not limited to the aspherical polynomial form represented by this formula (1).

[0188] z = (cr 2 ) / {1 + [1 - (k + 1)(c 2 r 2 )] 1 / 2}+ A4r 4 + A6r 6 + A8r 8 + A10r 10 + A12r 12 + A14r 14 + A

[0189] 16r 16 + A18r 18 + A20r 20 + A22r 22 + A24r 24 + A26r 26 + A28r 28 + A30r 30 (1)

[0190] Among them, k is the conic coefficient, A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, A30 are aspheric coefficients, c is the curvature at the center of the optical surface, r is the perpendicular distance from the point on the aspheric curve to the optical axis, and z is the aspheric depth (the perpendicular distance between the point on the aspheric surface with a distance r from the optical axis and the tangent plane at the vertex on the optical axis of the aspheric surface).

[0191] Figure 2 、 Figure 3 respectively show the axial aberration and chromatic aberration of magnification diagrams of light with wavelengths of 650nm, 610nm, 555nm, 510nm, and 470nm after passing through the lens 10 of the first embodiment. Figure 4 shows the field curvature and distortion diagrams of light with a wavelength of 555nm after passing through the lens 10 of the first embodiment. Figure 4 The field curvature S of [[ ]] is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0192] In this embodiment, the entrance pupil diameter ENPD of the lens 10 is 5.103mm, the image height IH of the full field of view (1.0 field of view) is 8.000mm, the image height IH of the MIC field of view is 8.250mm, the field of view angle FOV in the diagonal direction of the full field of view (1.0 field of view) is 84.25°; the field of view angle FOV in the diagonal direction of the MIC field of view is 85.17°. The lens 10 meets the design requirements of high relative illumination, wide-angle, and easy processing. Its axial and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0193] It can be understood that the image height of the 1.0 field of view refers to half of the diagonal length of the effective pixel area of the sensor; the image height of the MIC field of view refers to the field of view height that expands outward from the image height of the 1.0 field of view to prevent assembly deviation; the FOV in the diagonal direction of the 1.0 field of view refers to the field of view angle corresponding to the effective pixel area of the sensor; the FOV in the diagonal direction of the MIC field of view refers to the field of view angle corresponding to the image height of the MIC field of view.

[0194] (Second Embodiment)

[0195] The symbol meanings in the second embodiment are the same as those in the first embodiment.

[0196] Figure 5 Shown is the lens 20 of the second embodiment of the present invention.

[0197] Tables 3 and 4 show the design data of the lens 20 of the second embodiment of the present invention.

[0198]

Table 3

[0199]

[0200]

[0201] Table 4 shows the aspherical data of each lens in the lens 20 of the second embodiment of the present utility model.

[0202]

Table 4

[0203]

[0204]

[0205] Figure 6 、 Figure 7 respectively show the axial aberration and chromatic aberration of magnification diagrams of light with wavelengths of 650nm, 610nm, 555nm, 510nm, and 470nm after passing through the lens 20 of the second embodiment. Figure 8 shows the field curvature and distortion diagrams of light with a wavelength of 555nm after passing through the lens 20 of the second embodiment. Figure 8 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0206] In this embodiment, the entrance pupil diameter ENPD of the lens 20 is 5.140mm, the image height IH of the full field of view (1.0 field of view) is 8.000mm, the image height IH of the MIC field of view is 8.250mm, the field of view angle FOV in the diagonal direction of the full field of view (1.0 field of view) is 83.85°, the field of view angle FOV in the diagonal direction of the MIC field of view is 85.22°. The lens 20 meets the design requirements of high relative illumination, wide-angle, and easy processing. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0207] (The third embodiment)

[0208] The symbol meanings in the third embodiment are the same as those in the first embodiment.

[0209] Figure 9 Shown is the lens 30 of the third embodiment of the present utility model.

[0210] Table 5 and Table 6 show the design data of the lens 30 of the third embodiment of the present utility model.

[0211]

Table 5

[0212]

[0213] Table 6 shows the aspherical data of each lens in the lens 30 of the third embodiment of the present utility model.

[0214]

Table 6

[0215]

[0216]

[0217] Figure 10 、 Figure 11 respectively show the axial aberration and chromatic aberration of magnification diagrams of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm after passing through the lens 30 of the third embodiment. Figure 12 shows the curvature of field and distortion diagrams of light with a wavelength of 555 nm after passing through the lens 30 of the third embodiment. Figure 12 The curvature of field S is the curvature of field in the sagittal direction, and T is the curvature of field in the meridional direction.

[0218] In this embodiment, the entrance pupil diameter ENPD of the lens 30 is 5.061 mm, the image height IH of the full field of view (1.0 field of view) is 8.000 mm, the image height IH of the MIC field of view is 8.250 mm, the field of view angle FOV in the diagonal direction of the full field of view (1.0 field of view) is 84.53°, the field of view angle FOV in the diagonal direction of the MIC field of view is 85.64°. The lens 30 meets the design requirements of high relative illumination, wide-angle, and easy processing. Its axial and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0219] (Fourth Embodiment)

[0220] The symbol meanings in the fourth embodiment are the same as those in the first embodiment.

[0221] Figure 13 Shown is the lens 40 of the fourth embodiment of the present invention.

[0222] Tables 7 and 8 show the design data of the lens 40 of the fourth embodiment of the present invention.

[0223]

Table 7

[0224]

[0225] Table 8 shows the aspheric data of each lens in the lens 40 of the fourth embodiment of the present invention.

[0226]

Table 8

[0227]

[0228]

[0229] Figure 14 、 Figure 15Schematic diagrams of axial aberration and chromatic aberration of magnification of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm after passing through the lens 40 of the fourth embodiment are respectively shown. Figure 16 Schematic diagrams of field curvature and distortion of light with a wavelength of 555 nm after passing through the lens 40 of the fourth embodiment are shown. Figure 16 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0230] In this embodiment, the entrance pupil diameter ENPD of the lens 40 is 5.077 mm, the image height IH of the full field of view (1.0 field of view) is 8.000 mm, the image height IH of the MIC field of view is 8.290 mm, the field of view angle FOV in the diagonal direction of the full field of view (1.0 field of view) is 83.00°, the field of view angle FOV in the diagonal direction of the MIC field of view is 84.97°. The lens 40 meets the design requirements of high relative illuminance, wide-angle, and easy processing. Its axial and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0231] (Fifth Embodiment)

[0232] The symbol meanings in the fifth embodiment are the same as those in the first embodiment.

[0233] Figure 17 The lens 50 of the fifth embodiment of the present invention is shown.

[0234] Tables 9 and 10 show the design data of the lens 50 of the fifth embodiment of the present invention.

[0235]

Table 9

[0236]

[0237] Table 10 shows the aspheric data of each lens in the lens 50 of the fifth embodiment of the present invention.

[0238]

Table 10

[0239]

[0240]

[0241] Figure 18 、 Figure 19 Schematic diagrams of axial aberration and chromatic aberration of magnification of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm after passing through the lens 50 of the fifth embodiment are respectively shown. Figure 20 Schematic diagrams of field curvature and distortion of light with a wavelength of 555 nm after passing through the lens 50 of the fifth embodiment are shown. Figure 20The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0242] In this embodiment, the entrance pupil diameter ENPD of the lens 50 is 5.094 mm, the image height IH at the full field of view (1.0 field of view) is 8.000 mm, the image height IH at the MIC field of view is 8.250 mm, the field of view angle FOV in the diagonal direction at the full field of view (1.0 field of view) is 84.17°, the field of view angle FOV in the diagonal direction at the MIC field of view is 85.32°. The lens 50 meets the design requirements of high relative illumination, wide-angle, and easy processing. Its axial and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0243] (Sixth Embodiment)

[0244] The symbol meanings in the sixth embodiment are the same as those in the first embodiment.

[0245] Figure 21 Shown is the lens 60 of the sixth embodiment of the present utility model.

[0246] Tables 11 and 12 show the design data of the lens 60 of the sixth embodiment of the present utility model.

[0247]

Table 11

[0248]

[0249] Table 12 shows the aspheric data of each lens in the lens 60 of the sixth embodiment of the present utility model.

[0250]

Table 12

[0251]

[0252]

[0253] Figure 22 、 Figure 23 Show the axial aberration and chromatic aberration of magnification diagrams of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm passing through the lens 60 of the sixth embodiment, respectively. Figure 24 Shows the field curvature and distortion diagrams of light with a wavelength of 555 nm passing through the lens 60 of the sixth embodiment. Figure 24 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0254] In this embodiment, the entrance pupil diameter ENPD of the lens 60 is 5.088 mm, the image height IH at the full field of view (1.0 field of view) is 8.000 mm, the image height IH at the MIC field of view is 8.250 mm, the field of view angle FOV in the diagonal direction at the full field of view (1.0 field of view) is 84.75°, the field of view angle FOV in the diagonal direction at the MIC field of view is 86.48°. The lens 60 meets the design requirements of high relative illuminance, wide-angle, and easy processing. Its axial and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0255] (The seventh embodiment)

[0256] The symbol meanings in the seventh embodiment are the same as those in the first embodiment.

[0257] Figure 25 Shown is the lens 70 of the seventh embodiment of the present utility model.

[0258] Tables 13 and 14 show the design data of the lens 70 of the seventh embodiment of the present utility model.

[0259]

Table 13

[0260]

[0261]

[0262] Table 14 shows the aspheric data of each lens in the lens 70 of the seventh embodiment of the present utility model.

[0263]

Table 14

[0264]

[0265]

[0266] Figure 26 、 Figure 27 Show the axial aberration and chromatic aberration of magnification diagrams of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm passing through the lens 70 of the seventh embodiment respectively. Figure 28 Shows the field curvature and distortion diagrams of light with a wavelength of 555 nm passing through the lens 70 of the seventh embodiment. Figure 28 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0267] In this embodiment, the entrance pupil diameter ENPD of the lens 70 is 4.973 mm, the image height IH of the full field of view (1.0 field of view) is 8.000 mm, the image height IH of the MIC field of view is 8.250 mm, the field of view angle FOV in the diagonal direction of the full field of view (1.0 field of view) is 85.80°, the field of view angle FOV in the diagonal direction of the MIC field of view is 88.17°. The lens 70 meets the design requirements of high relative illumination, wide-angle, and easy processing. Its axial and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0268] (Eighth Embodiment)

[0269] The symbol meanings in the eighth embodiment are the same as those in the first embodiment.

[0270] Figure 29 Shown is the lens 80 of the eighth embodiment of the present utility model.

[0271] Tables 15 and 16 show the design data of the lens 80 of the eighth embodiment of the present utility model.

[0272]

Table 15

[0273]

[0274]

[0275] Table 16 shows the aspherical data of each lens in the lens 80 of the eighth embodiment of the present utility model.

[0276]

Table 16

[0277]

[0278]

[0279] Figure 30 、 Figure 31 Respectively show the axial aberration and chromatic aberration of magnification diagrams of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm after passing through the lens 80 of the eighth embodiment. Figure 32 Shows the field curvature and distortion diagrams of light with a wavelength of 555 nm after passing through the lens 80 of the eighth embodiment. Figure 32 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0280] In this embodiment, the entrance pupil diameter ENPD of the lens 80 is 5.136 mm, the image height IH at the full field of view (1.0 field of view) is 8.000 mm, the image height IH at the MIC field of view is 8.250 mm, the field of view FOV in the diagonal direction at the full field of view (1.0 field of view) is 85.58°, the field of view FOV in the diagonal direction at the MIC field of view is 87.71°. The lens 80 meets the design requirements of high relative illumination, wide-angle, and easy processing. Its axial and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0281] Table 17 shown later shows the values corresponding to various numerical values and the parameters specified in the conditional expressions in Embodiments 1, 2, 3, 4, 5, 6, 7, and 8.

[0282]

Table 17

[0283]

[0284] Those of ordinary skill in the art can understand that the above embodiments are specific embodiments for implementing the present invention, and in practical applications, various changes can be made in form and details without departing from the spirit and scope of the present invention.

Claims

1. A lens, characterized in that, The lens comprises seven lenses in total. The seven lenses are, in order from the object side to the image side: a first lens with positive refractive power, a second lens with negative refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, a fifth lens with negative refractive power, a sixth lens with positive refractive power, and a seventh lens with negative refractive power. The lens further includes an aperture. The object side surface of the first lens is convex at the paraxial region, and the image side surface is concave at the paraxial region. The object side surface of the second lens is convex at the paraxial region, and the image side surface is concave at the paraxial region. The object side surface of the third lens is convex at the paraxial region, and the image side surface is concave at the paraxial region. The object side surface of the fourth lens is convex at the paraxial region. The object side surface of the fifth lens is concave at the paraxial region, and the image side surface is concave at the paraxial region. The object side surface of the sixth lens is convex at the paraxial region, and the image side surface is concave at the paraxial region. The object side surface of the seventh lens is convex at the paraxial region, and the image side surface is concave at the paraxial region. Wherein, the maximum optical radius of the object side surface of the fifth lens is SD51, the sagittal height at the maximum optical radius of the object side surface of the fifth lens is SAG51, the maximum optical radius of the image side surface of the seventh lens is SD72, the sagittal height at the maximum optical radius of the image side surface of the seventh lens is SAG72, the central curvature radius of the object side surface of the fifth lens at the paraxial region is R9, the central curvature radius of the image side surface of the seventh lens at the paraxial region is R14, the perpendicular height from the intersection point of the chief ray of the 1.0 field of view and the object side surface of the seventh lens to the optical axis is HC71, the maximum optical radius of the object side surface of the seventh lens is SD71, the perpendicular height from the intersection point of the chief ray of the 1.0 field of view and the image side surface of the seventh lens to the optical axis is HC72, the maximum optical radius of the image side surface of the seventh lens is SD72, the on-axis distance between the fifth lens and the sixth lens is d10, the on-axis distance between the sixth lens and the seventh lens is d12, the on-axis thickness of the sixth lens is d11, the on-axis distance between the third lens and the fourth lens is d6, the overall optical length of the lens is TTL, the focal length of the sixth lens is f6, the focal length of the seventh lens is f7, the central curvature radius of the object side surface of the first lens at the paraxial region is R1, the central curvature radius of the image side surface of the first lens at the paraxial region is R2, the focal length of the lens is f, and the following relationships are satisfied: -8.00 ≤ (SAG51 / SD51 * R9) / (SAG72 / SD72 * R14) ≤ -3.30; 0.80 ≤ HC71 / SD71 ≤ 0.95; 0.85 ≤ HC72 / SD72 ≤ 0.97; 1.10 ≤ (d10 + d12) / d11 ≤ 2.10; 0.007 ≤ d6 / TTL ≤ 0.013; -0.85 ≤ f6 / f7 ≤ -0.45; 1.00 ≤ (R1 + R2) / f ≤ 2.

10.

2. The lens according to claim 1, wherein The distance along the optical axis from the aperture to the center of the object side of the first lens is TEP, the sagittal height at the maximum optical radius of the object side of the first lens is SAG11, and the focal length of the first lens is f1. The following relationship is satisfied: 0.06 ≤ |TEP / SAG11|*(f / f1) ≤ 0.

09.

3. The lens according to claim 1, wherein, The following relationship is satisfied: -7.10 ≤ (SAG51 / SD51*R9) / (SAG72 / SD72*R14) ≤ -4.

05.

4. The lens according to claim 1, wherein The following relationship is satisfied: 1.30 ≤ (d10 + d12) / d11 ≤ 1.

91.

5. The lens according to claim 1, wherein The following relationship is satisfied: -0.76 ≤ f6 / f7 ≤ -0.

52.

6. The lens according to claim 1, wherein, The following relationship is satisfied: 1.15 ≤ (R1 + R2) / f ≤ 1.

85.

7. The lens according to claim 1, characterized in that, The on-axis distance between the first lens and the second lens is d2, and the on-axis distance between the fourth lens and the fifth lens is d8. The following relationship is satisfied: 1.95 ≤ d8 / d2 ≤ 4.

05.

8. The lens according to claim 7, wherein, The following relationship is satisfied: 2.44 ≤ d8 / d2 ≤ 3.

40.

9. The lens according to claim 1, wherein The first lens is a glass lens.

10. A lens, characterized in that, The lens comprises seven lenses in total. The seven lenses are, in order from the object side to the image side: a first lens with positive refractive power, a second lens with negative refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, a fifth lens with negative refractive power, a sixth lens with positive refractive power, and a seventh lens with negative refractive power. The lens further includes an aperture. The object side of the first lens is convex at the paraxial region, and the image side is concave at the paraxial region. The object side of the second lens is convex at the paraxial region, and the image side is concave at the paraxial region. The object side of the third lens is convex at the paraxial region, and the image side is concave at the paraxial region. The object side of the fourth lens is convex at the paraxial region. The object side of the fifth lens is concave at the paraxial region, and the image side is concave at the paraxial region. The object side of the sixth lens is convex at the paraxial region, and the image side is concave at the paraxial region. The object side of the seventh lens is convex at the paraxial region, and the image side is concave at the paraxial region. Among them, the maximum optical radius of the object side of the fifth lens is SD51, the sagittal height at the maximum optical radius of the object side of the fifth lens is SAG51, the maximum optical radius of the image side of the seventh lens is SD72, the sagittal height at the maximum optical radius of the image side of the seventh lens is SAG72, the central curvature radius of the object side of the fourth lens at the paraxial region is R7, the central curvature radius of the object side of the fifth lens at the paraxial region is R9, the central curvature radius of the image side of the seventh lens at the paraxial region is R14, the perpendicular height from the intersection point of the chief ray of the 1.0 field of view and the object side of the seventh lens to the optical axis is HC71, the maximum optical radius of the object side of the seventh lens is SD71, the perpendicular height from the intersection point of the chief ray of the 1.0 field of view and the image side of the seventh lens to the optical axis is HC72, the maximum optical radius of the image side of the seventh lens is SD72, the on-axis distance between the fifth lens and the sixth lens is d10, the on-axis distance between the sixth lens and the seventh lens is d12, the on-axis thickness of the sixth lens is d11, the focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the focal length of the lens is f, the combined focal length of the first lens and the second lens is f12, and the following relational expressions are satisfied: -8.00 ≤ (SAG51 / SD51 * R9) / (SAG72 / SD72 * R14) ≤ -3.30; 0.80 ≤ HC71 / SD71 ≤ 0.95; 0.85 ≤ HC72 / SD72 ≤ 0.97; 1.10 ≤ (d10 + d12) / d11 ≤ 2.10; -0.88 ≤ f1 / (f2 - f3) ≤ -0.05; 1.10 ≤ f12 / f ≤ 1.60; 2.20 ≤ f4 / R7 + f5 / R9 ≤ 3.

80.

11. The lens according to claim 10, characterized in that, The following relational expression is satisfied: -0.75 ≤ f1 / (f2 - f3) ≤ -0.

06.

12. The lens according to claim 10, wherein, The following relational expression is satisfied: 1.28 ≤ f12 / f ≤ 1.

36.

13. The lens according to claim 10, wherein The following relational expression is satisfied: 2.70 ≤ f4 / R7 + f5 / R9 ≤ 3.

20.

14. The lens according to claim 10, wherein, The following relational expression is satisfied: -7.10 ≤ (SAG51 / SD51 * R9) / (SAG72 / SD72 * R14) ≤ -4.

05.

15. The lens according to claim 10, wherein The following relational expression is satisfied: 1.30 ≤ (d10 + d12) / d11 ≤ 1.

91.

16. The lens according to claim 10, wherein, The focal length of the sixth lens is f6, the focal length of the seventh lens is f7, and the following relational expression is satisfied: -0.85 ≤ f6 / f7 ≤ -0.

45.

17. The lens according to claim 16, characterized in that, The following relational expression is satisfied: -0.76 ≤ f6 / f7 ≤ -0.

52.

18. The lens according to claim 10, wherein The central curvature radius of the object side of the first lens at the paraxial region is R1, the central curvature radius of the image side of the first lens at the paraxial region is R2, the focal length of the lens is f, and the following relational expression is satisfied: 1.00 ≤ (R1 + R2) / f ≤ 2.

10.

19. The lens according to claim 18, wherein, The following relational expression is satisfied: 1.15 ≤ (R1 + R2) / f ≤ 1.

85.

20. The lens according to claim 10, wherein, The focal length of the sixth lens is f6, and the following relational expression is satisfied: 1.65 ≤ |f / f5| + |f / f6| ≤ 2.

69.

21. The lens according to claim 20, wherein, The following relational expression is satisfied: 1.96 ≤ |f / f5| + |f / f6| ≤ 2.

28.

22. The lens according to claim 10, characterized in that, The first lens is a glass lens.

23. A lens module, comprising a lens according to any one of claims 1-22, characterized in that, Each of the first to seventh lenses includes an optical part for imaging and a structural part surrounding the optical part. The second lens includes a second optical part for imaging and a second structural part surrounding the second optical part. The third lens includes a third optical part for imaging and a third structural part surrounding the third optical part. The second structural part includes a first surface close to the image side. The third structural part includes a second surface close to the object side. The first surface includes a first inclined surface close to the second optical part and a second inclined surface provided on the side away from the second optical part of the first inclined surface. The second surface includes a third inclined surface close to the third optical part and a fourth inclined surface provided on the side away from the third optical part of the third inclined surface. The angle between the first inclined surface and the optical axis is ANG1, and the angle between the fourth inclined surface and the optical axis is ANG4. The following relational expression is satisfied: |ANG1 - ANG4| ≤ 30°.

24. The lens module according to claim 23, wherein The angle between the second inclined surface and the optical axis is ANG2, and the angle between the third inclined surface and the optical axis is ANG3. The following relational expression is satisfied: |ANG2 - ANG3| ≤ 10°.

25. The lens module according to claim 23, wherein The first inclined surface is inclined from the inside out towards the object side. The radius of curvature of the image side of the second lens at the paraxial region is R4, and the maximum optical radius of the image side of the second lens is SD22. The following relational expression is satisfied: 3.00 ≤ R4 / SD22 * tan(ANG1) ≤ 5.

00.

26. The lens module according to claim 24, wherein The third inclined surface is inclined from the inside out towards the image side. The radius of curvature of the object side of the third lens at the paraxial region is R5, and the maximum optical radius of the object side of the third lens is SD31. The following relational expression is satisfied: 1.50 ≤ R5 / SD31 * cos(ANG3) ≤ 4.00.

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