Camera optical lens

Abstract

The present invention relates to the field of optical lenses. Disclosed is a camera optical lens, sequentially comprising from an object side to an image side: a first lens having positive refractive power, a second lens having negative refractive power, a third lens having negative refractive power, a fourth lens having positive refractive power, a fifth lens having negative refractive power, a sixth lens having positive refractive power, and a seventh lens having negative refractive power. The following relational expressions are satisfied: -0.300≤Sin(A1.0out14)*R14 / f7≤0.003; 1.05≤(f1+f2+f3+f4) / (f5+f6+f7)≤2.30; and -1.40≤Sin(A0.8out8)*R8 / f4≤0.10.

Description

Camera optical lens TECHNICAL FIELD

[0001] The present application relates to the field of optical lens, in particular to a camera optical lens suitable for smart phones, digital cameras and other portable terminal devices, as well as surveillance cameras, PC lenses, vehicle-mounted lenses and other camera devices. BACKGROUND

[0002] In recent years, with the rise of various smart devices, the demand for small-sized camera optical lenses is increasing, and due to the reduction in the pixel size of photosensitive devices, in addition to the current trend of electronic products being light and thin, the small-sized camera optical lens with good imaging quality has become the mainstream in the market. In order to obtain better imaging quality, a multi-piece lens structure is often used. With the development of technology and the increasing of user's diversified needs, under the condition of continuous reduction of the pixel area of photosensitive devices and the increasing of the requirement of imaging quality of the system, a seven-piece lens structure gradually appears in the lens design. There is an urgent need for a wide-angle camera lens with excellent optical characteristics, large aperture, wide angle, ultra-thin and fully corrected aberration.

[0003] SUMMARY

[0004] In view of the above problems, the purpose of the present application is to provide a camera optical lens which has good optical performance while meeting the design requirements of full correction of aberration, large aperture, wide angle, ultra-thin, diversified structure design and high matching degree of sensor.

[0005] To achieve the above purpose, the technical scheme of the present application provides a camera optical lens, which comprises seven lenses, and the seven lenses are arranged in order from the object side to the image side as follows: 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.

[0006] The object side surface of the first lens is convex at the near-axis, and the image side surface is concave at the near-axis; the object side surface of the second lens is convex at the near-axis, and the image side surface is concave at the near-axis; the object side surface of the third lens is concave at the near-axis, and the image side surface is concave at the near-axis; the object side surface of the fourth lens is convex at the near-axis, and the image side surface is convex at the near-axis; the object side surface of the fifth lens is convex at the near-axis, and the image side surface is concave at the near-axis; the object side surface of the sixth lens is convex at the near-axis, and the image side surface is convex at the near-axis; the object side surface of the seventh lens is convex at the near-axis, and the image side surface is concave at the near-axis.

[0007] Wherein, 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 sixth lens is f6, the focal length of the seventh lens is f7, the central curvature radius of the image side surface of the fourth lens at the near axis is R8, the central curvature radius of the object side surface of the fifth lens at the near axis is R9, the central curvature radius of the image side surface of the fifth lens at the near axis is R10, the central curvature radius of the image side surface of the seventh lens at the near axis is R14, the entrance pupil diameter of the camera optical lens is ENPD, the field of view angle of 1.0 field of view of the camera optical lens is FOV, the on-axis distance from the image side surface of the first lens to the object side surface of the second lens is d2, the on-axis distance from the image side surface of the second lens to the object side surface of the third lens is d4, the angle between the chief ray of 1.0 field of view of the camera optical lens and the optical axis when the chief ray exits from the image side surface of the seventh lens is Sin(A1.0out14), the angle between the chief ray of 0.8 field of view of the camera optical lens and the optical axis when the chief ray exits from the image side surface of the fourth lens is Sin(A0.8out8), and the following relations are satisfied:

[0008] -1.40≤f3 / f4≤-0.60;

[0009] 1.20≤R9 / R10≤1.90;

[0010] 5.10≤ENPD / Tan(FOV / 2)≤5.70;

[0011] 0.30≤d2 / d4≤0.60;

[0012] -0.300≤Sin(A1.0out14)*R14 / f7≤0.003;

[0013] 1.05≤(f1+f2+f3+f4) / (f5+f6+f7)≤2.30;

[0014] -1.40≤Sin(A0.8out8)*R8 / f4≤0.10.

[0015] Preferably, the following relation is satisfied: 0.30≤d2 / d4≤0.50.

[0016] Preferably, the following relation is satisfied: -0.230≤Sin(A1.0out14)*R14 / f7≤0.003.

[0017] Preferably, the following relation is satisfied: 1.25≤(f1+f2+f3+f4) / (f5+f6+f7)≤2.00.

[0018] Preferably, the following relation is met: -1.20 ≤ Sin(A0.8out8) * R8 / f4 ≤ 0.10.

[0019] Preferably, the on-axis thickness of the sixth lens is d11, and the following relation is met: 9.00 ≤ f6 / d11 ≤ 16.00.

[0020] Preferably, the following relation is met: 11.00 ≤ f6 / d11 ≤ 14.00.

[0021] Preferably, the first lens is made of glass.

[0022] The technical scheme of the present application also provides a camera optical lens, which comprises seven lenses in sequence 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.

[0023] The object side surface of the first lens is convex at the near axis, and the image side surface is concave at the near axis; the object side surface of the second lens is convex at the near axis, and the image side surface is concave at the near axis; the object side surface of the third lens is concave at the near axis, and the image side surface is concave at the near axis; the object side surface of the fourth lens is convex at the near axis, and the image side surface is convex at the near axis; the object side surface of the fifth lens is convex at the near axis, and the image side surface is concave at the near axis; the object side surface of the sixth lens is convex at the near axis, and the image side surface is convex at the near axis; and the object side surface of the seventh lens is convex at the near axis, and the image side surface is concave at the near axis.

[0024] wherein, a focal length of the first lens is f1, a focal length of the second lens is f2, a focal length of the third lens is f3, a focal length of the fourth lens is f4, a focal length of the fifth lens is f5, a focal length of the sixth lens is f6, a focal length of the seventh lens is f7, a central curvature radius of the object side surface of the first lens at the near-axial region is R1, a central curvature radius of the image side surface of the second lens at the near-axial region is R4, a central curvature radius of the object side surface of the third lens at the near-axial region is R5, a central curvature radius of the image side surface of the fourth lens at the near-axial region is R8, a central curvature radius of the image side surface of the seventh lens at the near-axial region is R14, an angle between the chief ray of 1.0 field of view of the imaging optical lens and the optical axis when the chief ray exits from the image side surface of the seventh lens is Sin(A1.0out14), an angle between the chief ray of 0.8 field of view of the imaging optical lens and the optical axis when the chief ray exits from the image side surface of the fourth lens is Sin(A0.8out8), a maximum incident angle of all chief rays of the imaging optical lens at the image plane is CRAmax, and the following relations are satisfied:

[0025] -0.300≤Sin(A1.0out14)*R14 / f7≤0.003;

[0026] 1.05≤(f1+f2+f3+f4) / (f5+f6+f7)≤2.30;

[0027] -1.40≤Sin(A0.8out8)*R8 / f4≤0.10;

[0028] 1.60≤f1 / R1+f4 / R8≤3.00;

[0029] -14.00≤f2 / R4+f3 / R5≤-5.50;

[0030] 35.00°≤CRAmax≤40.00°.

[0031] Preferably, the following relation is satisfied: 1.95≤f1 / R1+f4 / R8≤2.55.

[0032] Preferably, the following relation is satisfied: -12.00≤f2 / R4+f3 / R5≤-7.00.

[0033] Preferably, the following relation is satisfied: -0.230≤Sin(A1.0out14)*R14 / f7≤0.003.

[0034] Preferably, the following relation is satisfied: 1.25≤(f1+f2+f3+f4) / (f5+f6+f7)≤2.00.

[0035] Preferably, the following relationship is satisfied: -1.20 ≤ Sin(A0.8out8) * R8 / f4 ≤ 0.10.

[0036] Preferably, the on-axis thickness of the seventh lens is d13, and the following relationship is satisfied: -15.00 ≤ f7 / d13 ≤ -8.50.

[0037] Preferably, the following relationship is satisfied: -12.00 ≤ f7 / d13 ≤ -10.00.

[0038] Preferably, the following relationship is satisfied: -4.80 ≤ f7 / R14 ≤ -1.60.

[0039] Preferably, the following relationship is satisfied: -4.00 ≤ f7 / R14 ≤ -2.00.

[0040] Preferably, the first lens is made of glass.

[0041] The camera optical lens according to the present application has excellent optical characteristics, and has the characteristics of sufficient aberration correction, large aperture, wide angle, ultra-thin, diversified structure design, and high matching degree with sensors, and is particularly suitable for mobile phone camera lens assemblies, WEB camera lenses, and vehicle-mounted lenses composed of high-pixel CCD, CMOS, and other camera elements. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort based on these drawings.

[0043] FIG. 1 is a structural schematic diagram of a camera optical lens according to a first embodiment of the present application;

[0044] FIG. 2 is an axial aberration schematic diagram of the camera optical lens shown in FIG. 1;

[0045] FIG. 3 is a lateral chromatic aberration schematic diagram of the camera optical lens shown in FIG. 1;

[0046] FIG. 4 is a field curvature and distortion schematic diagram of the camera optical lens shown in FIG. 1;

[0047] FIG. 5 is a structural schematic diagram of a camera optical lens according to a second embodiment of the present application;

[0048] FIG. 6 is an axial aberration schematic diagram of the camera optical lens shown in FIG. 5;

[0049] FIG. 7 is a lateral chromatic aberration schematic diagram of the camera optical lens shown in FIG. 5;

[0050] Fig. 8 is a schematic view of field curvature and distortion of the photographing optical lens shown in Fig. 5;

[0051] Fig. 9 is a schematic view of the structure of a photographing optical lens according to a third embodiment of the present application;

[0052] Fig. 10 is a schematic view of axial aberration of the photographing optical lens shown in Fig. 9;

[0053] Fig. 11 is a schematic view of lateral chromatic aberration of the photographing optical lens shown in Fig. 9;

[0054] Fig. 12 is a schematic view of field curvature and distortion of the photographing optical lens shown in Fig. 9;

[0055] Fig. 13 is a schematic view of the structure of a photographing optical lens according to a fourth embodiment of the present application;

[0056] Fig. 14 is a schematic view of axial aberration of the photographing optical lens shown in Fig. 13;

[0057] Fig. 15 is a schematic view of lateral chromatic aberration of the photographing optical lens shown in Fig. 13;

[0058] Fig. 16 is a schematic view of field curvature and distortion of the photographing optical lens shown in Fig. 13. DETAILED DESCRIPTION

[0059] In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art can understand that, in the embodiments of the present application, many technical details are presented in order to make the readers better understand the present application. However, the claimed technical solutions of the present application can be realized even without these technical details and based on various changes and modifications of the following embodiments.

[0060] With reference to Figs. 1-16, the technical solutions of the present application provide a photographing optical lens 10, 20, 30, 40. Figs. 1, 5, 9, 13 show the photographing optical lens 10, 20, 30, 40 of the present application, which comprises seven lenses in total. Specifically, the photographing optical lens comprises, in order from the object side to the image side: an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. An optical element such as a filter GF can be arranged between the seventh lens L7 and the image plane Si.

[0061] 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. The glass and resin lenses are matched to reduce chromatic aberration and improve the performance of the optical camera lens. The lenses can also be made of other materials.

[0062] The object side and the image side 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 aspherical surfaces.

[0063] The object side of the first lens L1 is convex at the paraxial region, and the image side is concave at the paraxial region. The first lens L1 has positive refractive power. The object side and the image side of the first lens L1 can also be arranged in other concave and convex distribution conditions.

[0064] The object side of the second lens L2 is convex at the paraxial region, and the image side is concave at the paraxial region. The second lens L2 has negative refractive power. The object side and the image side of the second lens L2 can also be arranged in other concave and convex distribution conditions.

[0065] The object side of the third lens L3 is concave at the paraxial region, and the image side is concave at the paraxial region. The third lens L3 has negative refractive power. The object side and the image side of the third lens L3 can also be arranged in other concave and convex distribution conditions.

[0066] The object side of the fourth lens L4 is convex at the paraxial region, and the image side is convex at the paraxial region. The fourth lens L4 has positive refractive power. The object side and the image side of the fourth lens L4 can also be arranged in other concave and convex distribution conditions.

[0067] The object side of the fifth lens L5 is convex at the paraxial region, and the image side is concave at the paraxial region. The fifth lens L5 has negative refractive power. The object side and the image side of the fifth lens L5 can also be arranged in other concave and convex distribution conditions.

[0068] The object side of the sixth lens L6 is convex at the paraxial region, and the image side is convex at the paraxial region. The sixth lens L6 has positive refractive power. The object side and the image side of the sixth lens L6 can also be arranged in other concave and convex distribution conditions.

[0069] The object side of the seventh lens L7 is convex at the paraxial region, and the image side is concave at the paraxial region. The seventh lens L7 has negative refractive power. The object side and the image side of the seventh lens L7 can also be arranged in other concave and convex distribution conditions.

[0070] The focal length of the third lens L3 is defined as f3, and the focal length of the fourth lens L4 is defined as f4, and the following relationship is satisfied: -1.40≤f3 / f4≤-0.60. Within the range of the relationship, by reasonably distributing the focal length ratio of the third lens and the fourth lens, the degree of deflection of light passing through the system can be avoided, the difficulty of aberration correction is reduced, the field curvature and distortion of the lens can be better corrected, the field curvature and distortion of the lens are controlled at a smaller level, and high-pixel imaging of the system is realized.

[0071] The central curvature radius of the object side surface of the fifth lens L5 at the near axis is defined as R9, and the central curvature radius of the image side surface of the fifth lens L5 at the near axis is defined as R10, and the following relationship is satisfied: 1.20≤R9 / R10≤1.90. Within the range of the relationship, the fifth lens has smaller refractive power, which can better correct the chromatic aberration of the system in cooperation with the fourth lens, and improve the overall imaging quality.

[0072] The entrance pupil diameter of the camera optical lens is defined as ENPD, and the field of view angle of the 1.0 field of view of the camera optical lens is defined as FOV, and the following relationship is satisfied: 5.10≤ENPD / Tan(FOV / 2)≤5.70. By limiting the entrance pupil diameter and the field of view angle within a reasonable range, a small FNO lens can be realized, the light amount is increased, and the wide-angle requirement is met.

[0073] The on-axis distance from the image side surface of the first lens L1 to the object side surface of the second lens L2 is defined as d2, and the on-axis distance from the image side surface of the second lens L2 to the object side surface of the third lens L3 is defined as d4, and the following relationship is satisfied: 0.30≤d2 / d4≤0.60. By reasonably setting the air gap of the first to third lenses, the peripheral structure of the lens can be reasonably designed, especially the thickness of the peripheral part of the lens, so that the design of the connecting structure between the lenses is more diversified. Preferably, 0.30≤d2 / d4≤0.50.

[0074] The angle between the 1.0 field of view chief ray and the optical axis when the 1.0 field of view chief ray exits from the image side surface of the seventh lens L7 is defined as Sin(A1.0out14), the focal length of the seventh lens L7 is defined as f7, and the central curvature radius of the image side surface of the seventh lens L7 at the near axis is defined as R14, and the following relationship is satisfied: -0.300≤Sin(A1.0out14)*R14 / f7≤0.003. By controlling the relationship between the angle between the 1.0 field of view chief ray and the optical axis when the 1.0 field of view chief ray exits from the image side surface of the seventh lens, the central curvature radius of the image side surface of the seventh lens, and the focal length of the seventh lens, it is beneficial to increase the image height to match the large image height sensor, and it is beneficial to better match the chief ray angle of the imaging sensor in the 1.0 field of view, and a higher quality image is obtained. Preferably, -0.230≤Sin(A1.0out14)*R14 / f7≤0.003.

[0075] The focal length of the first lens L1 is defined as f1, the focal length of the second lens L2 is defined as f2, the focal length of the third lens L3 is defined as f3, the focal length of the fourth lens L4 is defined as f4, the focal length of the fifth lens L5 is defined as f5, the focal length of the sixth lens L6 is defined as f6, and the focal length of the seventh lens L7 is defined as f7. The following relationship is satisfied: 1.05≤(f1+f2+f3+f4) / (f5+f6+f7)≤2.30. Reasonable control of the refractive power of each lens is conducive to achieving a wide angle and a thin profile. Meanwhile, the last three lenses can better correct aberrations. Preferably, 1.25≤(f1+f2+f3+f4) / (f5+f6+f7)≤2.00.

[0076] The angle between the 0.8 field of view chief ray of the camera optical lens and the optical axis when the chief ray exits the image side of the fourth lens L4 is defined as Sin(A0.8out8), the central curvature radius of the image side of the fourth lens L4 at the paraxial region is defined as R8, and the focal length of the fourth lens L4 is defined as f4. The following relationship is satisfied: -1.40≤Sin(A0.8out8)*R8 / f4≤0.10. By controlling the relationship between the angle between the 0.8 field of view chief ray and the optical axis when the chief ray exits the image side of the fourth lens and the central curvature radius of the image side of the fourth lens and the focal length of the fourth lens, the camera optical lens can better match the chief ray angle of the imaging sensor at the 0.8 field of view, obtain higher quality images, better adjust the light focusing position of the camera optical lens, improve the convergence ability of the camera optical lens, and effectively balance the on-axis aberration of the camera optical lens. Preferably, -1.20≤Sin(A0.8out8)*R8 / f4≤0.10.

[0077] The on-axis thickness of the sixth lens L6 is defined as d11. The following relationship is satisfied: 9.00≤f6 / d11≤16.00. Reasonable control of the ratio of the focal length of the sixth lens to the on-axis thickness is conducive to correcting aberrations and improving the processability of the sixth lens. Preferably, 11.00≤f6 / d11≤14.00.

[0078] The central curvature radius of the object side of the first lens L1 at the paraxial region is defined as R1. The following relationship is satisfied: 1.60≤f1 / R1+f4 / R8≤3.00. Within the conditional range, the assembly sensitivity of the first four lenses is reduced, the assembly yield is improved, and the aberration is reduced. Preferably, 1.95≤f1 / R1+f4 / R8≤2.55.

[0079] The central curvature radius of the image side surface of the second lens L2 at the paraxial region is defined as R4, and the central curvature radius of the object side surface of the third lens L3 at the paraxial region is defined as R5, and the following relationship is satisfied: -14.00≤f2 / R4+f3 / R5≤-5.50. Within the conditional range, the light focusing position of the imaging optical lens is better adjusted, the convergence ability of the imaging optical lens is improved, and the on-axis aberration of the imaging optical lens is effectively balanced. Preferably, -12.00≤f2 / R4+f3 / R5≤-7.00.

[0080] The maximum incident angle of all chief rays of the imaging optical lens on the image plane Si is defined as CRAmax, and the following relationship is satisfied: 35.00°≤CRAmax≤40.00°. Within the conditional range, the maximum incident angle of the chief rays is controlled to match the imaging sensor, thereby obtaining higher image quality.

[0081] The on-axis thickness of the seventh lens L7 is defined as d13, and the following relationship is satisfied: -15.00≤f7 / d13≤-8.50. Within the conditional range, the shape and processability of the seventh lens are adjusted to improve the production yield. Preferably, -12.00≤f7 / d13≤-10.00.

[0082] The focal length of the seventh lens L7 is f7, and the central curvature radius of the image side surface of the seventh lens L7 at the paraxial region is R14, and the following relationship is satisfied: -4.80≤f7 / R14≤-1.60. Within the conditional range, the shape and refractive power of the seventh lens are adjusted to correct aberration. Preferably, -4.00≤f7 / R14≤-2.00.

[0083] Compared with the prior art, the camera optical lens provided by the application controls the optical deflection degree, reduces the aberration correction difficulty, ensures that the field curvature and distortion of the lens are controlled at a smaller level, realizes high-pixel imaging of the system, and simultaneously, the fifth lens has a smaller refractive power, which can better correct the chromatic aberration of the system in cooperation with the fourth lens, improves the overall imaging quality, realizes a lens with a small FNO and a large aperture, increases the light amount while meeting the wide-angle requirement, and through reasonable design of the periphery of the lens, especially the thickness of the periphery of the lens, the design of the connecting structure between the lenses is more diversified. In addition, while increasing the image height to match a large image height sensor, the main ray angle of the imaging sensor is better matched at 1.0 field of view and 0.8 field of view, so that a higher quality image is obtained. Through reasonable control of the refractive power of each lens, the effect of wide-angle and ultra-thin is realized, the last three lenses can better correct aberration, the camera optical lens can better adjust the light focusing position, the convergence ability of the camera optical lens to light is improved, and the on-axis aberration of the camera optical lens is effectively balanced.

[0084] In addition, compared with the prior art, the application can also be configured as follows: -0.300≤Sin(A1.0out14)*R14 / f7≤0.003; 1.05≤(f1+f2+f3+f4) / (f5+f6+f7)≤2.30; -1.40≤Sin(A0.8out8)*R8 / f4≤0.10; 1.60≤f1 / R1+f4 / R8≤3.00; -14.00≤f2 / R4+f3 / R5≤-5.50; 35.00°≤CRAmax≤40.00°, which is conducive to increasing the image height to match a large image height sensor, and can better match the main ray angle of the imaging sensor at 1.0 field of view and 0.8 field of view, so that a higher quality image is obtained. Through reasonable control of the refractive power of each lens, the effect of wide-angle and ultra-thin is realized, the last three lenses can better correct aberration, the camera optical lens can better adjust the light focusing position, the convergence ability of the camera optical lens to light is improved, and the on-axis aberration of the camera optical lens is effectively balanced. In addition, it is also conducive to reducing the assembly sensitivity of the first four lenses and improving the assembly yield.

[0085] The imaging optical lens of the present application will be described below with examples. The symbols described in each example are shown below. The units of focal length, on-axis distance, central curvature radius, and on-axis thickness are mm.

[0086] TTL: total track length (on-axis distance from the object side surface of the first lens L1 to the image surface Si), unit: mm;

[0087] F-number FNO: refers to the ratio of the effective focal length of the imaging optical lens to the entrance pupil diameter.

[0088] Next, the technical solutions of the present application will be described in detail in four embodiments.

[0089] (First Embodiment)

[0090] Table 1 and Table 2 show the design data of the imaging optical lens 10 of the first embodiment of the present application.

[0091] [Table 1]

[0092] Wherein, the meanings of each symbol are as follows.

[0093] S1: aperture;

[0094] R: central curvature radius of the optical surface;

[0095] R1: central curvature radius of the object side surface of the first lens L1 at the paraxial region;

[0096] R2: central curvature radius of the image side surface of the first lens L1 at the paraxial region;

[0097] R3: central curvature radius of the object side surface of the second lens L2 at the paraxial region;

[0098] R4: central curvature radius of the image side surface of the second lens L2 at the paraxial region;

[0099] R5: central curvature radius of the object side surface of the third lens L3 at the paraxial region;

[0100] R6: central curvature radius of the image side surface of the third lens L3 at the paraxial region;

[0101] R7: central curvature radius of the object side surface of the fourth lens L4 at the paraxial region;

[0102] R8: central curvature radius of the image side surface of the fourth lens L4 at the paraxial region;

[0103] R9: central curvature radius of the object side surface of the fifth lens L5 at the paraxial region;

[0104] R10: central curvature radius of the image side surface of the fifth lens L5 at the paraxial region;

[0105] R11: the central curvature radius of the object side of the sixth lens element L6 at the paraxial position;

[0106] R12: the central curvature radius of the image side surface of the sixth lens L6 at the paraxial point;

[0107] R13: the central radius of curvature of the object side of the seventh lens element L7 at the paraxial point;

[0108] R14: the central curvature radius of the image side surface of the seventh lens L7 at the paraxial point;

[0109] R15: The central curvature radius of the object side of the optical filter GF at the paraxial position;

[0110] R16: The central curvature radius of the image side of the optical filter GF at the paraxial position;

[0111] d: the on-axis thickness of the lens and the on-axis distance between lenses;

[0112] d0: the on-axis distance from aperture S1 to the object-side surface of the first lens L1;

[0113] d1: axial thickness of the first lens L1;

[0114] d2: the on-axis distance from the image-side surface of the first lens L1 to the object-side surface of the second lens L2;

[0115] d3: axial thickness of the second lens L2;

[0116] d4: the on-axis distance from the image-side surface of the second lens L2 to the object-side surface of the third lens L3;

[0117] d5: axial thickness of the third lens L3;

[0118] d6: the on-axis distance from the image-side surface of the third lens L3 to the object-side surface of the fourth lens L4;

[0119] d7: axial thickness of the fourth lens L4;

[0120] d8: the on-axis distance from the image-side surface of the fourth lens L4 to the object-side surface of the fifth lens L5;

[0121] d9: axial thickness of the fifth lens L5;

[0122] d10: the on-axis distance from the image-side surface of the fifth lens L5 to the object-side surface of the sixth lens L6;

[0123] d11: axial thickness of sixth lens L6;

[0124] d12: the on-axis distance from the image-side surface of the sixth lens L6 to the object-side surface of the seventh lens L7;

[0125] d13: on-axis thickness of the seventh lens L7;

[0126] d14: on-axis distance from the image-side surface of the seventh lens L7 to the object-side surface of the optical filter GF;

[0127] d15: on-axis thickness of the optical filter GF;

[0128] d16: on-axis distance from the image-side surface of the optical filter GF to the image plane Si;

[0129] nd: refractive index at the d-line (the d-line is green light having a wavelength of 550 nm);

[0130] nd1: refractive index at the d-line of the first lens L1;

[0131] nd2: refractive index at the d-line of the second lens L2;

[0132] nd3: refractive index at the d-line of the third lens L3;

[0133] nd4: refractive index at the d-line of the fourth lens L4;

[0134] nd5: refractive index at the d-line of the fifth lens L5;

[0135] nd6: refractive index at the d-line of the sixth lens L6;

[0136] nd7: refractive index at the d-line of the seventh lens L7;

[0137] ndg: refractive index at the d-line of the optical filter GF;

[0138] vd: Abbe number;

[0139] v1: Abbe number of the first lens L1;

[0140] v2: Abbe number of the second lens L2;

[0141] v3: Abbe number of the third lens L3;

[0142] v4: Abbe number of the fourth lens L4;

[0143] v5: Abbe number of the fifth lens L5;

[0144] v6: Abbe number of the sixth lens L6;

[0145] v7: Abbe number of the seventh lens L7;

[0146] vg: Abbe number of the optical filter GF.

[0147] Table 2 shows aspherical surface data of each lens in the imaging optical lens 10 of the first embodiment of the present application.

[0148] Table 2

[0149] For convenience, the aspherical surface of each lens surface uses an aspherical surface shown in the following formula (1). However, the present application is not limited to the aspherical polynomial form represented by the formula (1). 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 16r 16 +A18r 18 +A20r 20 +A22r 22 +A24r 24 +A26r 26 +A28r 28 +A30r 30 (1)

[0150] where k is a conic coefficient, A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, A30 are aspherical coefficients, c is a curvature at the center of the optical surface, r is a perpendicular distance of a point on the aspherical curve from the optical axis, and z is an aspherical depth (a perpendicular distance between a point on the aspherical surface at a distance r from the optical axis and a tangent plane tangent to the aspherical surface at the vertex on the optical axis).

[0151] FIGS. 2, 3, 4, and 5 respectively show axial chromatic aberration and magnification chromatic aberration diagrams of light having wavelengths of 656 nm, 588 nm, 546 nm, 486 nm, and 436 nm passing through the imaging optical lens 10 of the first embodiment. FIG. 4 shows field curvature and distortion diagrams of light having a wavelength of 546 nm passing through the imaging optical lens 10 of the first embodiment, and the field curvature S of FIG. 4 is the sagittal direction field curvature and T is the tangential direction field curvature.

[0152] In the embodiment, the entrance pupil diameter ENPD of the photographing optical lens 10 is 4.806 mm, the full field (1.0 field) image height IH is 8.000 mm, the full field (1.0 field) angle of view FOV in the diagonal direction is 85.59°, the MIC field image height IH is 8.230 mm, and the MIC field angle of view FOV in the diagonal direction is 87.37°. The photographing optical lens 10 meets the design requirements of large aperture, wide angle, ultra-thin, diversified structure design, and high matching degree of the sensor, the on-axis and off-axis chromatic aberrations are fully corrected, and the photographing optical lens 10 has excellent optical characteristics.

[0153] It can be understood that the 1.0 field image height refers to half of the diagonal length of the effective pixel area of the sensor, the MIC field image height refers to the field height for preventing assembly deviation which is expanded outward compared with the 1.0 field image height, the 1.0 field FOV in the diagonal direction refers to the field angle corresponding to the effective pixel area of the sensor, and the MIC field FOV in the diagonal direction refers to the field angle corresponding to the MIC field image height.

[0154] (Second Embodiment)

[0155] The symbols in the second embodiment have the same meanings as those in the first embodiment.

[0156] FIG. 5 shows the photographing optical lens 20 of the second embodiment of the present application.

[0157] Tables 3 and 4 show the design data of the photographing optical lens 20 of the second embodiment of the present application.

[0158]

Table 3

[0159] Table 4 shows the aspheric surface data of each lens in the photographing optical lens 20 of the second embodiment of the present application.

[0160]

Table 4

[0161] FIGS. 6 and 7 respectively show the axial aberration and the magnification chromatic aberration diagrams of the light with wavelengths of 656 nm, 588 nm, 546 nm, 486 nm, and 436 nm after passing through the photographing optical lens 20 of the second embodiment. FIG. 8 shows the field curvature and distortion diagrams of the light with a wavelength of 546 nm after passing through the photographing optical lens 20 of the second embodiment. The field curvature S in FIG. 8 is the sagittal direction field curvature, and T is the tangential direction field curvature.

[0162] In the embodiment, the entrance pupil diameter ENPD of the photographing optical lens 20 is 4.926 mm, the full field (1.0 field) image height IH is 8.000 mm, the full field (1.0 field) diagonal direction field of view FOV is 84.77°, the MIC field image height IH is 8.230 mm, the MIC field diagonal direction field of view FOV is 86.60°, the photographing optical lens 20 meets the design requirements of large aperture, wide angle, ultra-thin, diversified structure design, high sensor matching degree, the on-axis and off-axis chromatic aberrations are fully corrected, and the photographing optical lens 20 has excellent optical characteristics.

[0163] (third embodiment)

[0164] The symbol meanings of the third embodiment are the same as those of the first embodiment.

[0165] FIG. 9 shows the photographing optical lens 30 of the third embodiment of the present application.

[0166] Tables 5 and 6 show the design data of the photographing optical lens 30 of the third embodiment of the present application.

[0167] [Table 5]

[0168] Table 6 shows the aspheric surface data of each lens in the photographing optical lens 30 of the third embodiment of the present application.

[0169] [Table 6]

[0170] FIGS. 10 and 11 respectively show the axial aberration and the magnification chromatic aberration diagrams of light with wavelengths of 656 nm, 588 nm, 546 nm, 486 nm and 436 nm after passing through the photographing optical lens 30 of the third embodiment. FIG. 12 shows the field curvature and distortion diagrams of light with a wavelength of 546 nm after passing through the photographing optical lens 30 of the third embodiment. The field curvature S of FIG. 12 is the sagittal direction field curvature, and T is the tangential direction field curvature.

[0171] In the embodiment, the entrance pupil diameter ENPD of the photographing optical lens 30 is 4.868 mm, the full field (1.0 field) image height IH is 8.000 mm, the full field (1.0 field) diagonal direction field of view FOV is 84.97°, the MIC field image height IH is 8.290 mm, the MIC field diagonal direction field of view FOV is 87.18°, the photographing optical lens 30 meets the design requirements of large aperture, wide angle, ultra-thin, diversified structure design, high sensor matching degree, the on-axis and off-axis chromatic aberrations are fully corrected, and the photographing optical lens 30 has excellent optical characteristics.

[0172] (Fourth embodiment)

[0173] The symbol meanings of the fourth embodiment are the same as those of the first embodiment.

[0174] Fig. 13 shows the imaging optical lens 40 of the fourth embodiment of the present application.

[0175] Tables 7 and 8 show the design data of the imaging optical lens 40 of the fourth embodiment of the present application.

[0176]

Table 7

[0177] Table 8 shows the aspherical surface data of each lens in the imaging optical lens 40 of the fourth embodiment of the present application.

[0178]

Table 8

[0179] Figs. 14 and 15 show the axial aberration and the lateral chromatic aberration of light with wavelengths of 656 nm, 588 nm, 546 nm, 486 nm and 436 nm, respectively, after passing through the imaging optical lens 40 of the fourth embodiment. Fig. 16 shows the field curvature and the distortion of light with a wavelength of 546 nm after passing through the imaging optical lens 40 of the fourth embodiment. The field curvature S of Fig. 16 is the sagittal field curvature, and T is the tangential field curvature.

[0180] In the present embodiment, the entrance pupil diameter ENPD of the imaging optical lens 40 is 4.918 mm, the full field (1.0 field) image height IH is 8.000 mm, the full field (1.0 field) angle of view FOV in the diagonal direction is 84.00°, the MIC field image height IH is 8.230 mm, the MIC field angle of view FOV in the diagonal direction is 85.71°, the imaging optical lens 40 meets the design requirements of large aperture, wide angle, ultra-thin, diversified structural design, high matching degree of sensor, the on-axis and off-axis chromatic aberration is fully corrected, and has excellent optical characteristics.

[0181]

Table 9

[0182] It is understood by those skilled in the art that the above embodiments are specific embodiments for implementing the present application, and in actual applications, various changes can be made in form and details without departing from the spirit and scope of the present application.

Claims

1. A camera optical lens characterized in that, The camera optical lens comprises seven lenses in sequence 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 object side surface of the first lens is convex at the near axis, and the image side surface is concave at the near axis; the object side surface of the second lens is convex at the near axis, and the image side surface is concave at the near axis; the object side surface of the third lens is concave at the near axis, and the image side surface is concave at the near axis; the object side surface of the fourth lens is convex at the near axis, and the image side surface is convex at the near axis; the object side surface of the fifth lens is convex at the near axis, and the image side surface is concave at the near axis; the object side surface of the sixth lens is convex at the near axis, and the image side surface is convex at the near axis; and the object side surface of the seventh lens is convex at the near axis, and the image side surface is concave at the near axis; wherein 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 sixth lens is f6, the focal length of the seventh lens is f7, the central curvature radius of the image side surface of the fourth lens at the near axis is R8, the central curvature radius of the object side surface of the fifth lens at the near axis is R9, the central curvature radius of the image side surface of the fifth lens at the near axis is R10, the central curvature radius of the image side surface of the seventh lens at the near axis is R14, the entrance pupil diameter of the camera optical lens is ENPD, the field of view angle of the 1.0 field of view of the camera optical lens is FOV, the on-axis distance from the image side surface of the first lens to the object side surface of the second lens is d2, the on-axis distance from the image side surface of the second lens to the object side surface of the third lens is d4, the angle between the chief ray of the 1.0 field of view of the camera optical lens and the optical axis when the chief ray exits from the image side surface of the seventh lens is Sin(A1.0out14), the angle between the chief ray of the 0.8 field of view of the camera optical lens and the optical axis when the chief ray exits from the image side surface of the fourth lens is Sin(A0.8out8), and the following relationships are satisfied: -1.40≤f3 / f4≤-0.60; 1.20≤R9 / R10≤1.90; 5.10≤ENPD / Tan(FOV / 2)≤5.70; 0.30≤d2 / d4≤0.60; -0.300≤Sin(A1.0out14)*R14 / f7≤0.003; 1.05≤(f1+f2+f3+f4) / (f5+f6+f7)≤2.30; -1.40≤Sin(A0.8out8)*R8 / f4≤0.

10.

2. The camera optical lens according to claim 1, wherein, The following relationship is satisfied: 0.30≤d2 / d4≤0.

50.

3. The camera optical lens according to claim 1, wherein, The following relationship is satisfied: -0.230≤Sin(A1.0out14)*R14 / f7≤0.

003.

4. The camera optical lens according to claim 1, characterized in that, satisfies the following relationship: 1.25 ≤ (f1+f2+f3+f4) / (f5+f6+f7) ≤ 2.

00.

5. The camera optical lens according to claim 1, wherein, satisfies the following relationship: -1.20 ≤ Sin(A0.8out8)*R8 / f4 ≤ 0.

10.

6. The camera optical lens according to claim 1, characterized in that, An on-axis thickness of the sixth lens is d11, and satisfies the following relationship: 9.00 ≤ f6 / d11 ≤ 16.

00.

7. The camera optical lens according to claim 6, characterized in that, satisfies the following relationship: 11.00 ≤ f6 / d11 ≤ 14.

00.

8. The camera optical lens according to claim 1, characterized in that, The first lens is made of glass.

9. A camera optical lens characterized in that, The imaging optical lens comprises seven lenses in sequence 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 object side surface of the first lens is convex at the near axis, and the image side surface is concave at the near axis; the object side surface of the second lens is convex at the near axis, and the image side surface is concave at the near axis; the object side surface of the third lens is concave at the near axis, and the image side surface is concave at the near axis; the object side surface of the fourth lens is convex at the near axis, and the image side surface is convex at the near axis; the object side surface of the fifth lens is convex at the near axis, and the image side surface is concave at the near axis; the object side surface of the sixth lens is convex at the near axis, and the image side surface is convex at the near axis; the object side surface of the seventh lens is convex at the near axis, and the image side surface is concave at the near axis. Wherein, 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 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 near axis is R1, the central curvature radius of the image side surface of the second lens at the near axis is R4, the central curvature radius of the object side surface of the third lens at the near axis is R5, the central curvature radius of the image side surface of the fourth lens at the near axis is R8, the central curvature radius of the image side surface of the seventh lens at the near axis is R14, the angle between the 1.0 field of view chief ray of the imaging optical lens and the optical axis when exiting from the image side surface of the seventh lens is Sin(A1.0out14), the angle between the 0.8 field of view chief ray of the imaging optical lens and the optical axis when exiting from the image side surface of the fourth lens is Sin(A0.8out8), the maximum incident angle of all chief rays of the imaging optical lens on the image plane is CRAmax, and the following relationships are satisfied: -0.300 ≤ Sin(A1.0out14)*R14 / f7 ≤ 0.003; 1.05 ≤ (f1+f2+f3+f4) / (f5+f6+f7) ≤ 2.30; -1.40 ≤ Sin(A0.8out8)*R8 / f4 ≤ 0.10; 1.60 ≤ f1 / R1+f4 / R8 ≤ 3.00; -14.00 ≤ f2 / R4+f3 / R5 ≤ -5.50; 35.00° ≤ CRAmax ≤ 40.00°.

10. The camera optical lens according to claim 9, characterized in that, satisfies the following relationship: 1.95 ≤ f1 / R1 + f4 / R8 ≤ 2.

55.

11. The camera optical lens according to claim 9, characterized in that, satisfies the following relationship: -12.00 ≤ f2 / R4 + f3 / R5 ≤ -7.

00.

12. The camera optical lens according to claim 9, characterized in that, satisfies the following relationship: -0.230 ≤ Sin(A1.0out14)*R14 / f7 ≤ 0.

003.

13. The camera optical lens according to claim 9, characterized in that, satisfies the following relationship: 1.25 ≤ (f1+f2+f3+f4) / (f5+f6+f7) ≤ 2.

00.

14. The camera optical lens according to claim 9, characterized in that, satisfies the following relationship: -1.20 ≤ Sin(A0.8out8)*R8 / f4 ≤ 0.

10.

15. The camera optical lens according to claim 9, characterized in that, An on-axis thickness of the seventh lens is d13, and the following relationship is satisfied: -15.00 ≤ f7 / d13 ≤ -8.

50.

16. The camera optical lens according to claim 15, characterized in that, satisfies the following relationship: -12.00 ≤ f7 / d13 ≤ -10.

00.

17. The camera optical lens according to claim 9, characterized in that, satisfies the following relationship: -4.80 ≤ f7 / R14 ≤ -1.

60.

18. The camera optical lens according to claim 17, characterized in that, satisfies the following relationship: -4.00 ≤ f7 / R14 ≤ -2.

00.

19. The camera optical lens according to claim 9, characterized in that, The first lens is made of glass.

Images