Camera lens

Abstract

The application relates to the field of optical lenses, and discloses a camera optical lens which is composed of seven lenses, and the seven lenses are sequentially arranged 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 refractive power, a fifth lens with positive refractive power, a sixth lens with positive refractive power, and a seventh lens with negative refractive power; the dispersion coefficient of the first lens is v1, the refractive index of the third lens is n3, and the following relationship is met: 58.00 <= v1 <= 82.00; 1.69 <= n3 <= 2.20. The camera optical lens provided by the application has good optical performance and meets the design requirements of large aperture, wide angle and ultra-thin.

Description

[Technical Field]

[0001] This invention relates to the field of optical lenses, and in particular to a camera optical lens suitable for handheld terminal devices such as smartphones and digital cameras, as well as camera devices such as monitors and PC lenses. [Background Technology]

[0002] In recent years, with the rise of various smart devices, the demand for miniaturized camera lenses has been increasing. Due to the shrinking pixel size of image sensors and the current trend in electronic products towards high functionality and lightweight portability, miniaturized camera lenses with good image quality have become mainstream in the market. To achieve better image quality, multi-element lens structures are often used. Furthermore, with technological advancements and increasingly diverse user needs, as the pixel area of ​​image sensors continues to shrink and system requirements for image quality continue to rise, seven-element lens structures are gradually appearing in lens designs. There is an urgent need for wide-angle camera lenses with excellent optical characteristics, small size, and adequate aberration correction. [Summary of the Invention]

[0003] To address the aforementioned problems, the present invention aims to provide a camera optical lens that, while possessing excellent optical performance, meets the design requirements of large aperture, ultra-thin design, and wide-angle capability.

[0004] To solve the above-mentioned technical problems, the embodiments of the present invention provide a camera optical lens, which is composed of seven lenses. The seven lenses are arranged in the following 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 refractive power, a fifth lens with positive refractive power, a sixth lens with positive refractive power, and a seventh lens with negative refractive power.

[0005] The first lens has a dispersion coefficient of v1, and the third lens has a refractive index of n3, satisfying the following relationship:

[0006] 58.00≤v1≤82.00;

[0007] 1.69≤n3≤2.20.

[0008] Preferably, the central radius of curvature of the object-side surface of the fourth lens is R7, and the central radius of curvature of the image-side surface of the fourth lens is R8, and the following relationship is satisfied:

[0009] 2.00≤R7 / R8.

[0010] Preferably, the central radius of curvature of the image-side surface of the seventh lens is R14, and the central radius of curvature of the object-side surface of the seventh lens is R13, and they satisfy the following relationship:

[0011] R14 / R13≤-2.00.

[0012] Preferably, the object-side surface of the first lens is convex at the paraxial position, and the image-side surface of the first lens is concave at the paraxial position; the focal length of the first lens is f1, the focal length of the imaging optical lens is f, the central radius of curvature of the object-side surface of the first lens is R1, the central radius of curvature of the image-side surface of the first lens is R2, the axial thickness of the first lens is d1, and the total optical length of the imaging optical lens is TTL, and satisfies the following relationship:

[0013] 0.48≤f1 / f≤1.49;

[0014] -4.06≤(R1+R2) / (R1-R2)≤-1.20;

[0015] 0.06≤d1 / TTL≤0.20.

[0016] Preferably, the focal length of the second lens is f2, the focal length of the imaging optical lens is f, the central radius of curvature of the object-side surface of the second lens is R3, the central radius of curvature of the image-side surface of the second lens is R4, the on-axis thickness of the second lens is d3, and the total optical length of the imaging optical lens is TTL, and satisfies the following relationship:

[0017] -14.05≤f² / f≤-2.44;

[0018] -2.19≤(R3+R4) / (R3-R4)≤3.04;

[0019] 0.02≤d3 / TTL≤0.09.

[0020] Preferably, the focal length of the third lens is f3, the focal length of the imaging optical lens is f, the central radius of curvature of the object-side surface of the third lens is R5, the central radius of curvature of the image-side surface of the third lens is R6, the axial thickness of the third lens is d5, and the total optical length of the imaging optical lens is TTL, and satisfies the following relationship:

[0021] -63.62≤f3 / f≤-5.51;

[0022] -2.94≤(R5+R6) / (R5-R6)≤17.78;

[0023] 0.02≤d5 / TTL≤0.07.

[0024] Preferably, the focal length of the fourth lens is f4, the focal length of the imaging optical lens is f, the on-axis thickness of the fourth lens is d7, and the total optical length of the imaging optical lens is TTL, and satisfies the following relationship:

[0025] -529.05≤f4 / f≤57.84;

[0026] 0.03≤d7 / TTL≤0.10.

[0027] Preferably, the object-side surface of the fifth lens is convex at the paraxial position, and the image-side surface of the fifth lens is concave at the paraxial position; the focal length of the fifth lens is f5, the focal length of the imaging optical lens is f, the central radius of curvature of the object-side surface of the fifth lens is R9, the central radius of curvature of the image-side surface of the fifth lens is R10, the axial thickness of the fifth lens is d9, and the total optical length of the imaging optical lens is TTL, and satisfies the following relationship:

[0028] 3.60≤f5 / f≤111.58;

[0029] -155.10≤(R9+R10) / (R9-R10)≤-2.94;

[0030] 0.03≤d9 / TTL≤0.10.

[0031] Preferably, the object-side surface of the sixth lens is convex at the paraxial position, and the image-side surface of the sixth lens is concave at the paraxial position; the focal length of the sixth lens is f6, the focal length of the imaging optical lens is f, the central radius of curvature of the object-side surface of the sixth lens is R11, the central radius of curvature of the image-side surface of the sixth lens is R12, the axial thickness of the sixth lens is d11, and the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied:

[0032] 0.64≤f6 / f≤2.05;

[0033] -5.12≤(R11+R12) / (R11-R12)≤-1.48;

[0034] 0.04≤d11 / TTL≤0.11.

[0035] Preferably, the object-side surface of the seventh lens is concave at the paraxial position, and the image-side surface of the seventh lens is concave at the paraxial position; the focal length of the seventh lens is f7, the focal length of the imaging optical lens is f, the on-axis thickness of the seventh lens is d13, and the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied:

[0036] -1.44≤f7 / f≤-0.45;

[0037] 0.04≤d13 / TTL≤0.16.

[0038] Preferably, the first lens is made of glass.

[0039] Preferably, the third lens is made of glass.

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

[0041] The beneficial effects of the present invention are as follows: the camera optical lens according to the present invention has good optical performance and features large aperture, wide angle and ultra-thinness, and is especially suitable for mobile phone camera lens assemblies and WEB camera lenses composed of high-pixel CCD, CMOS and other camera elements. [Attached Image Description]

[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0043] Figure 1 This is a schematic diagram of the structure of the camera optical lens according to the first embodiment of the present invention;

[0044] Figure 2 yes Figure 1 A schematic diagram of axial aberrations of a camera optical lens is shown.

[0045] Figure 3 yes Figure 1 The diagram shows the magnification chromatic aberration of the camera optical lens.

[0046] Figure 4 yes Figure 1 The diagram shows the field curvature and distortion of the camera lens.

[0047] Figure 5 This is a schematic diagram of the structure of the camera optical lens according to the second embodiment of the present invention;

[0048] Figure 6 yes Figure 5 A schematic diagram of axial aberrations of a camera optical lens is shown.

[0049] Figure 7 yes Figure 5 The diagram shows the magnification chromatic aberration of the camera optical lens.

[0050] Figure 8 yes Figure 5 The diagram shows the field curvature and distortion of the camera lens.

[0051] Figure 9 This is a schematic diagram of the structure of the camera optical lens according to the third embodiment of the present invention;

[0052] Figure 10 yes Figure 9 A schematic diagram of axial aberrations of a camera optical lens is shown.

[0053] Figure 11 yes Figure 9 The diagram shows the magnification chromatic aberration of the camera optical lens.

[0054] Figure 12 yes Figure 9 The diagram shows the field curvature and distortion of the camera lens.

[0055] Figure 13 This is a schematic diagram of the structure of the camera optical lens according to the fourth embodiment of the present invention;

[0056] Figure 14 yes Figure 13 A schematic diagram of axial aberrations of a camera optical lens is shown.

[0057] Figure 15 yes Figure 13 The diagram shows the magnification chromatic aberration of the camera optical lens.

[0058] Figure 16 yes Figure 13 The diagram shows the field curvature and distortion of the camera lens.

[0059] Figure 17 This is a schematic diagram of the structure of the camera optical lens in the comparative embodiment;

[0060] Figure 18 yes Figure 17 A schematic diagram of axial aberrations of a camera optical lens is shown.

[0061] Figure 19 yes Figure 17 The diagram shows the magnification chromatic aberration of the camera optical lens.

[0062] Figure 20 yes Figure 17 The diagram shows the field curvature and distortion of the camera lens.

Detailed Implementation Methods

[0063] To make the objectives, technical solutions, and advantages of this invention clearer, the various embodiments of this invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this invention to facilitate a better understanding of the invention. However, the technical solutions claimed in this invention can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0064] (First Implementation)

[0065] Please refer to the accompanying drawings. The present invention provides a camera optical lens 10. Figure 1 The image shown is a camera optical lens 10 according to a first embodiment of the present invention. The camera optical lens 10 includes seven lenses. Specifically, the camera optical lens 10, from the object side to the image side, includes, in sequence: 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 an optical filter GF may be disposed between the seventh lens L7 and the image plane S1.

[0066] In this embodiment, the first lens L1 is made of glass, the second lens L2 is made of plastic, the third lens L3 is made of glass, the fourth lens L4 is made of glass, 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. In other optional embodiments, the lenses may be made of other materials.

[0067] In this embodiment, the dispersion coefficient of the first lens L1 is defined as v1, satisfying the following relationship: 58.00 ≤ v1 ≤ 82.00. Specifying the dispersion coefficient of the first lens L1 effectively distributes material properties, effectively improves aberrations, and enhances image quality.

[0068] The refractive index of the third lens L3 is defined as n3, satisfying the following relationship: 1.69 ≤ n3 ≤ 2.20. Specifying the refractive index of the third lens L3 effectively allocates material properties, effectively improves aberrations, and enhances image quality.

[0069] The central radius of curvature of the object-side surface of the fourth lens L4 is defined as R7, and the central radius of curvature of the image-side surface of the fourth lens L4 is defined as R8, satisfying the following relationship: 2.00 ≤ R7 / R8. This defines the shape of the fourth lens L4, reducing the degree of light refraction and effectively correcting chromatic aberration, ensuring that the chromatic aberration |LC| ≤ 3μm.

[0070] The central radius of curvature of the image-side surface of the seventh lens L7 is defined as R14, and the central radius of curvature of the object-side surface of the seventh lens L7 is defined as R13, satisfying the following relationship: R14 / R13≤-2.00. Specifying the shape of the seventh lens L7 is beneficial for correcting astigmatism and distortion of the camera optical lens 10, ensuring that distortion |Distortion|≤2.5%, and reducing the possibility of vignetting.

[0071] In this embodiment, the object-side surface of the first lens L1 is convex near the axis, and the image-side surface of the first lens L1 is concave near the axis. The first lens L1 has positive refractive power. In other optional embodiments, the object-side and image-side surfaces of the first lens L1 may also be configured with other concave and convex distributions.

[0072] The focal length of the first lens L1 is defined as f1, and the focal length of the imaging optical lens 10 is defined as f, satisfying the following relationship: 0.48 ≤ f1 / f ≤ 1.49. This defines the ratio of the focal length f1 of the first lens L1 to the focal length f of the imaging optical lens 10. Within this range, the first lens L1 possesses appropriate positive refractive power, which is beneficial for reducing system aberrations and also promotes the development of ultra-thin and wide-angle lenses. Preferably, the following relationship is satisfied: 0.76 ≤ f1 / f ≤ 1.19.

[0073] The central radius of curvature of the object-side surface of the first lens L1 is defined as R1, and the central radius of curvature of the image-side surface of the first lens L1 is defined as R2, satisfying the following relationship: -4.06 ≤ (R1 + R2) / (R1 - R2) ≤ -1.20. The shape of the first lens L1 is specified, and within the range of the condition, the shape of the first lens L1 is reasonably controlled so that the first lens L1 can effectively correct the spherical aberration of the system. Preferably, the following relationship is satisfied: -2.54 ≤ (R1 + R2) / (R1 - R2) ≤ -1.49.

[0074] The axial thickness of the first lens L1 is defined as d1, and the total optical length of the imaging optical lens 10 is TTL, satisfying the following relationship: 0.06 ≤ d1 / TTL ≤ 0.20. Within this range, it is beneficial to achieve ultra-thinness. Preferably, the following relationship is satisfied: 0.10 ≤ d1 / TTL ≤ 0.16.

[0075] In this embodiment, the object-side surface of the second lens L2 is convex near the axis, and the image-side surface of the second lens L2 is concave near the axis. The second lens L2 has negative refractive power. In other optional embodiments, the object-side and image-side surfaces of the second lens L2 may also be configured with other concave and convex distributions.

[0076] The focal length of the second lens L2 is defined as f2, and the focal length of the imaging optical lens 10 is defined as f, satisfying the following relationship: -14.05 ≤ f2 / f ≤ -2.44. This defines the ratio of the focal length f2 of the second lens L2 to the focal length f of the imaging optical lens 10. Within this condition, controlling the negative optical power of the second lens L2 within a reasonable range is beneficial for correcting aberrations in the optical system. Preferably, the following relationship is satisfied: -8.78 ≤ f2 / f ≤ -3.05.

[0077] The central radius of curvature of the object-side surface of the second lens L2 is defined as R3, and the central radius of curvature of the image-side surface of the second lens L2 is defined as R4, satisfying the following relationship: -2.19 ≤ (R3 + R4) / (R3 - R4) ≤ 3.04. This defines the shape of the second lens L2. Within the range of the given conditions, as lenses develop towards ultra-thinness and wide-angle capabilities, this is beneficial for correcting on-axis chromatic aberration. Preferably, the following relationship is satisfied: -1.37 ≤ (R3 + R4) / (R3 - R4) ≤ 2.44.

[0078] The axial thickness of the second lens L2 is defined as d3, and the total optical length of the imaging optical lens 10 is TTL, satisfying the following relationship: 0.02≤d3 / TTL≤0.09. Within this range, it is beneficial to achieve ultra-thinness. Preferably, the following relationship is satisfied: 0.03≤d3 / TTL≤0.07.

[0079] In this embodiment, the object-side surface of the third lens L3 is convex near the axis, and the image-side surface of the third lens L3 is concave near the axis. The third lens L3 has negative refractive power. In other optional embodiments, the object-side and image-side surfaces of the third lens L3 may also be configured with other concave and convex distributions.

[0080] The focal length of the third lens L3 is defined as f3, and the focal length of the imaging optical lens 10 is defined as f, satisfying the following relationship: -63.62 ≤ f3 / f ≤ -5.51. This defines the ratio of the focal length f3 of the third lens L3 to the focal length f of the imaging optical lens 10. Within this range, through reasonable allocation of optical power, the system achieves better imaging quality and lower sensitivity. Preferably, the following relationship is satisfied: -39.76 ≤ f3 / f ≤ -6.88.

[0081] The center radius of curvature of the object-side surface of the third lens L3 is defined as R5, and the center radius of curvature of the image-side surface of the third lens L3 is defined as R6, satisfying the following relationship: -2.94 ≤ (R5 + R6) / (R5 - R6) ≤ 17.78. This effectively controls the shape of the third lens L3, which is beneficial to the forming of the third lens L3 and avoids poor forming and stress caused by excessive surface curvature of the third lens L3. Preferably, the following relationship is satisfied: -1.84 ≤ (R5 + R6) / (R5 - R6) ≤ 14.22.

[0082] The on-axis thickness of the third lens L3 is defined as d5, and the total optical length of the imaging optical lens 10 is TTL, satisfying the following relationship: 0.02≤d5 / TTL≤0.07. Within this range, it is beneficial to achieve ultra-thinness. Preferably, the following relationship is satisfied: 0.03≤d5 / TTL≤0.06.

[0083] In this embodiment, the object-side surface of the fourth lens L4 is convex near the axis, and the image-side surface of the fourth lens L4 is concave near the axis. The fourth lens L4 has negative refractive power. In other optional embodiments, the object-side and image-side surfaces of the fourth lens L4 may also be configured with other concave and convex distributions; the fourth lens L4 may also have positive refractive power.

[0084] The focal length of the fourth lens L4 is defined as f4, and the focal length of the imaging optical lens 10 is f, satisfying the following relationship: -529.05 ≤ f4 / f ≤ 57.84. This defines the ratio of the focal length f4 of the fourth lens L4 to the focal length f of the imaging optical lens 10. Within this range, a reasonable allocation of optical power allows the system to achieve better imaging quality and lower sensitivity, thus improving the performance of the optical system. Preferably, the following relationship is satisfied: -330.66 ≤ f4 / f ≤ 46.27.

[0085] The axial thickness of the fourth lens L4 is defined as d7, and the total optical length of the imaging optical lens 10 is TTL, satisfying the following relationship: 0.03 ≤ d7 / TTL ≤ 0.10. Within this range, it is beneficial to achieve ultra-thinness. Preferably, the following relationship is satisfied: 0.04 ≤ d7 / TTL ≤ 0.08.

[0086] In this embodiment, the object-side surface of the fifth lens L5 is convex near the axis, and the image-side surface of the fifth lens L5 is concave near the axis. The fifth lens L5 has positive refractive power. In other optional embodiments, the object-side and image-side surfaces of the fifth lens L5 may also be configured with other concave and convex distributions.

[0087] The focal length of the fifth lens L5 is defined as f5, and the focal length of the imaging optical lens 10 is f, satisfying the following relationship: 3.60 ≤ f5 / f ≤ 111.58. This specifies the ratio of the focal length f5 of the fifth lens L5 to the focal length f of the imaging optical lens 10. Within the range of this condition, limiting the fifth lens L5 effectively makes the light angle of the imaging optical lens 10 smoother, reducing tolerance sensitivity. Preferably, the following relationship is satisfied: 5.76 ≤ f5 / f ≤ 89.27.

[0088] The central radius of curvature of the object-side surface of the fifth lens L5 is defined as R9, and the central radius of curvature of the image-side surface of the fifth lens L5 is defined as R10, satisfying the following relationship: -155.10 ≤ (R9 + R10) / (R9 - R10) ≤ -2.94. This defines the shape of the fifth lens L5, which, within certain conditions, is beneficial for correcting aberrations in off-axis drawing angles as ultra-thin and wide-angle lenses develop. Preferably, it satisfies the following relationship: -96.94 ≤ (R9 + R10) / (R9 - R10) ≤ -3.67.

[0089] The axial thickness of the fifth lens L5 is defined as d9, and the total optical length of the imaging optical lens 10 is TTL, satisfying the following relationship: 0.03 ≤ d9 / TTL ≤ 0.10. Within this range, it is beneficial to achieve ultra-thinness. Preferably, the following relationship is satisfied: 0.05 ≤ d9 / TTL ≤ 0.08.

[0090] In this embodiment, the object-side surface of the sixth lens L6 is convex near the axis, and the image-side surface of the sixth lens L6 is concave near the axis. The sixth lens L6 has positive refractive power. In other optional embodiments, the object-side and image-side surfaces of the sixth lens L6 may also be configured with other concave and convex distributions.

[0091] The focal length of the sixth lens L6 is defined as f6, and the focal length of the imaging optical lens 10 is f, satisfying the following relationship: 0.64 ≤ f6 / f ≤ 2.05. This defines the ratio of the focal length f6 of the sixth lens L6 to the focal length f of the imaging optical lens 10. Within this range, through reasonable allocation of optical power, the system achieves better imaging quality and lower sensitivity. Preferably, the following relationship is satisfied: 1.02 ≤ f6 / f ≤ 1.64.

[0092] The central radius of curvature of the object-side surface of the sixth lens L6 is defined as R11, and the central radius of curvature of the image-side surface of the sixth lens L6 is defined as R12, satisfying the following relationship: -5.12≤(R11+R12) / (R11-R12)≤-1.48. This specifies the shape of the sixth lens L6. Within the range of this condition, with the development of ultra-thin wide-angle lenses, it is beneficial for correcting aberrations in off-axis drawing angles. Preferably, it satisfies the following relationship: -3.20≤(R11+R12) / (R11-R12)≤-1.85.

[0093] The axial thickness of the sixth lens L6 is defined as d11, and the total optical length of the imaging optical lens 10 is TTL, satisfying the following relationship: 0.04 ≤ d11 / TTL ≤ 0.11. Within this range, it is beneficial to achieve ultra-thinness. Preferably, the following relationship is satisfied: 0.06 ≤ d11 / TTL ≤ 0.09.

[0094] In this embodiment, the object-side surface of the seventh lens L7 is concave near the axis, and the image-side surface of the seventh lens L7 is also concave near the axis. The seventh lens L7 has negative refractive power. In other optional embodiments, the object-side and image-side surfaces of the seventh lens L7 may also be configured with other concave and convex distributions.

[0095] The focal length of the seventh lens L7 is defined as f7, and the focal length of the imaging optical lens 10 is defined as f, satisfying the following relationship: -1.44 ≤ f7 / f ≤ -0.45. This defines the ratio of the focal length f7 of the seventh lens L7 to the focal length f of the imaging optical lens 10. Within this range, through reasonable allocation of optical power, the system achieves better imaging quality and lower sensitivity. Preferably, the following relationship is satisfied: -0.90 ≤ f7 / f ≤ -0.56.

[0096] The axial thickness of the seventh lens L7 is defined as d13, and the total optical length of the imaging optical lens 10 is TTL, satisfying the following relationship: 0.04 ≤ d13 / TTL ≤ 0.16. Within this range, it is beneficial to achieve ultra-thinness. Preferably, the following relationship is satisfied: 0.06 ≤ d13 / TTL ≤ 0.13.

[0097] In this embodiment, the total optical length (TTL) of the camera optical lens 10 is less than or equal to 6.76 mm, which is beneficial for achieving ultra-thin design.

[0098] This design allows the overall optical length (TTL) of the camera lens 10 to be kept as short as possible, maintaining its miniaturization characteristics.

[0099] Furthermore, TTL represents the total optical length of the camera optical lens 10, and IH represents the image height of the camera optical lens 10, satisfying the following relationship: TTL / IH ≤ 1.20, which is beneficial for achieving ultra-thinness; FNO represents the aperture value of the camera optical lens 10, satisfying the following relationship: FNO ≤ 1.75, which is beneficial for achieving a large aperture and thus good imaging performance; the field of view of the camera optical lens 10 is FOV, satisfying the following relationship: FOV ≥ 85°, which is beneficial for achieving wide-angle. That is, by satisfying the above relationships, the camera optical lens 10 achieves good optical imaging performance while also meeting the design requirements of a large aperture, wide-angle, and ultra-thinness. Based on the characteristics of this optical lens 10, it is particularly suitable for mobile phone camera lens assemblies and WEB camera lenses composed of high-pixel CCD, CMOS, and other imaging elements.

[0100] The camera optical lens 10 of the present invention will be described below with examples. The symbols described in each example are as follows. The units for focal length, on-axis distance, radius of curvature, on-axis thickness, inversion point position, and stagnation point position are mm.

[0101] TTL: Total optical length (axial distance from the object surface of the first lens L1 to the imaging surface), in mm;

[0102] Aperture value FNO: refers to the ratio of the effective focal length to the entrance pupil diameter of a camera lens.

[0103] Preferably, the object-side and / or image-side surfaces of the lens may also be provided with inflection points and / or stagnation points to meet the requirements of high-quality imaging. Specific possible implementation schemes are described below.

[0104] Tables 1 and 2 show the design data of the camera optical lens 10 according to the first embodiment of the present invention.

[0105] Table 1

[0106]

[0107] The meanings of each symbol are as follows.

[0108] S1: Aperture;

[0109] R: Radius of curvature at the center of the optical surface;

[0110] R1: The central radius of curvature of the object-side surface of the first lens L1;

[0111] R2: The central radius of curvature of the image-side surface of the first lens L1;

[0112] R3: The central radius of curvature of the object-side surface of the second lens L2;

[0113] R4: The central radius of curvature of the image-side surface of the second lens L2;

[0114] R5: The central radius of curvature of the object-side surface of the third lens L3;

[0115] R6: The central radius of curvature of the image-side surface of the third lens L3;

[0116] R7: The central radius of curvature of the object side surface of the fourth lens L4;

[0117] R8: The central radius of curvature of the image-side surface of the fourth lens L4;

[0118] R9: The central radius of curvature of the object-side surface of the fifth lens L5;

[0119] R10: The central radius of curvature of the image-side surface of the fifth lens L5;

[0120] R11: The central radius of curvature of the object-side surface of the sixth lens L6;

[0121] R12: The central radius of curvature of the image-side surface of the sixth lens L6;

[0122] R13: The central radius of curvature of the object-side surface of the seventh lens L7;

[0123] R14: The central radius of curvature of the image-side surface of the seventh lens L7;

[0124] R15: The center radius of curvature of the object side surface of the optical filter GF;

[0125] R16: Radius of curvature of the center of the image side of the optical filter GF;

[0126] d: The axial thickness of the lens and the axial distance between lenses;

[0127] d0: The on-axis distance from aperture S1 to the object-side surface of the first lens L1;

[0128] d1: On-axis thickness of the first lens L1;

[0129] 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;

[0130] d3: On-axis thickness of the second lens L2;

[0131] d4: The axial distance from the image-side surface of the second lens L2 to the object-side surface of the third lens L3;

[0132] d5: On-axis thickness of the third lens L3;

[0133] 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;

[0134] d7: On-axis thickness of the fourth lens L4;

[0135] 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;

[0136] d9: On-axis thickness of the fifth lens L5;

[0137] d10: The axial distance from the image-side surface of the fifth lens L5 to the object-side surface of the sixth lens L6;

[0138] d11: On-axis thickness of the sixth lens L6;

[0139] d12: The axial distance from the image-side surface of the sixth lens L6 to the object-side surface of the seventh lens L7;

[0140] d13: On-axis thickness of the seventh lens L7;

[0141] d14: The on-axis distance from the image side of the seventh lens L7 to the object side of the optical filter GF;

[0142] d15: On-axis thickness of the optical filter GF;

[0143] d16: The axial distance from the image-side surface of the optical filter GF to the image plane Si;

[0144] nd: Refractive index of the d-line (the d-line represents green light with a wavelength of 550 nm);

[0145] nd1: The refractive index of the d-line of the first lens L1;

[0146] nd2: The refractive index of the d-line of the second lens L2;

[0147] nd3: The refractive index of the d-line of the third lens L3;

[0148] nd4: The refractive index of the d-line of the fourth lens L4;

[0149] nd5: The refractive index of the d-line of the fifth lens L5;

[0150] nd6: The refractive index of the d-line of the sixth lens L6;

[0151] nd7: The refractive index of the d-line of the seventh lens L7;

[0152] ndg: The refractive index of the d-line of the optical filter GF;

[0153] vd: Dispersion coefficient;

[0154] v1: Dispersion coefficient of the first lens L1;

[0155] v2: Dispersion coefficient of the second lens L2;

[0156] v3: Dispersion coefficient of the third lens L3;

[0157] v4: Dispersion coefficient of the fourth lens L4;

[0158] v5: Dispersion coefficient of the fifth lens L5;

[0159] v6: Dispersion coefficient of the sixth lens L6;

[0160] v7: Dispersion coefficient of the seventh lens L7;

[0161] vg: Dispersion coefficient of the optical filter GF.

[0162] Table 2 shows the aspherical data of each lens in the camera optical lens 10 of the first embodiment of the present invention.

[0163] Table 2

[0164]

[0165]

[0166] For convenience, the aspherical surfaces of each lens surface are as shown in the following formula (1). However, the present invention is not limited to the aspherical polynomial form represented by formula (1).

[0167] 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 +A16r 16 +A18r 18 +A20r 20 (1)

[0168] Where k is the conic coefficient, A4, A6, A8, A10, A12, A14, A16, A18, and A20 are aspheric coefficients, c is the curvature at the center of the optical surface, r is the perpendicular distance between a point on the aspheric curve and the optical axis, and z is the aspheric depth (the perpendicular distance between a point on the aspheric surface at a distance r from the optical axis and a tangent plane at the vertex of the aspheric optical axis).

[0169] Tables 3 and 4 show the inflection point and stagnation point design data of each lens in the camera optical lens 10 of the first embodiment of the present invention. P1R1 and P1R2 represent the object-side and image-side surfaces of the first lens L1, respectively; P2R1 and P2R2 represent the object-side and image-side surfaces of the second lens L2, respectively; P3R1 and P3R2 represent the object-side and image-side surfaces of the third lens L3, respectively; P4R1 and P4R2 represent the object-side and image-side surfaces of the fourth lens L4, respectively; P5R1 and P5R2 represent the object-side and image-side surfaces of the fifth lens L5, respectively; P6R1 and P6R2 represent the object-side and image-side surfaces of the sixth lens L6, respectively; and P7R1 and P7R2 represent the object-side and image-side surfaces of the seventh lens L7, respectively. The data corresponding to the "Inflection Point Position" column is the vertical distance from the inflection point set on the surface of each lens to the optical axis of the camera optical lens 10. The data in the "Station Point Position" field corresponds to the vertical distance from the station point set on each lens surface to the optical axis of the camera optical lens 10.

[0170] Table 3

[0171] Number of recurve points Recurve point location 1 Recurve point position 2 Recurve point position 3 Recurve point position 4 P1R1 1 1.485 / / / P1R2 1 1.205 / / / P2R1 0 / / / / P2R2 0 / / / / P3R1 3 0.245 1.225 1.295 / P3R2 2 0.265 1.215 / / P4R1 3 0.125 1.295 1.595 / P4R2 3 0.175 1.435 1.755 / P5R1 2 0.505 1.915 / / P5R2 4 0.305 1.985 2.105 2.295 P6R1 2 0.795 2.135 / / P6R2 2 0.935 3.055 / / P7R1 3 1.625 3.235 3.625 / P7R2 4 0.185 3.325 3.655 3.935

[0172] Table 4

[0173]

[0174]

[0175] Figure 2 , Figure 3 Axial aberration and magnification chromatic aberration are shown respectively after light with wavelengths of 436nm, 486nm, 546nm, 587nm and 656nm passes through the camera optical lens 10 of the first embodiment. Figure 4 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 546nm passes through the camera optical lens 10 of the first embodiment. Figure 4 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0176] Table 21, which appears later, shows the values ​​corresponding to the various numerical values ​​and parameters specified in the conditional expressions in each of the first, second, third, and fourth embodiments.

[0177] As shown in Table 21, the first embodiment satisfies all the conditional expressions.

[0178] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 10 is 3.134 mm, the full field of view image height IH is 5.120 mm, and the field of view angle FOV in the diagonal direction is 85.20°, so that the camera optical lens 10 meets the design requirements of large aperture, wide angle and ultra-thin design, its on-axis and off-axis chromatic aberration is fully corrected, and it has excellent optical characteristics.

[0179] (Second Implementation)

[0180] The second embodiment is basically the same as the first embodiment, and the symbols have the same meanings. For the structural form of the camera optical lens 20 in this second embodiment, please refer to... Figure 5 As shown, only the differences are listed below.

[0181] Tables 5 and 6 show the design data of the camera optical lens 20 according to the second embodiment of the present invention.

[0182] Table 5

[0183]

[0184] Table 6 shows the aspherical data of each lens in the camera optical lens 20 of the second embodiment of the present invention.

[0185] Table 6

[0186]

[0187]

[0188] Tables 7 and 8 show the inflection point and stagnation point design data of each lens in the camera optical lens 20 of the second embodiment of the present invention.

[0189] Table 7

[0190]

[0191]

[0192] Table 8

[0193] Number of outposts Location 1 P1R1 0 / P1R2 0 / P2R1 0 / P2R2 0 / P3R1 1 0.505 P3R2 1 0.625 P4R1 1 0.085 P4R2 1 0.115 P5R1 1 0.925 P5R2 1 0.465 P6R1 1 1.295 P6R2 1 1.435 P7R1 0 / P7R2 1 0.915

[0194] Figure 6 , Figure 7 Axial aberration and magnification chromatic aberration are shown respectively after light with wavelengths of 436nm, 486nm, 546nm, 587nm and 656nm passes through the camera optical lens 20 of the second embodiment. Figure 8 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 546nm passes through the camera optical 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.

[0195] As shown in Table 21, the second embodiment satisfies each conditional expression.

[0196] In this embodiment, the entrance pupil diameter (ENPD) of the camera optical lens 20 is 3.034 mm, the full field of view (IH) is 5.120 mm, and the diagonal field of view (FOV) is 87.00°. This allows the camera optical lens 20 to meet the design requirements of large aperture, wide angle, and ultra-thin design. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0197] (Third Implementation)

[0198] The third embodiment is basically the same as the first embodiment, and the symbols have the same meanings as in the first embodiment. For the structural form of the camera optical lens 30 in this third embodiment, please refer to... Figure 9 As shown, only the differences are listed below.

[0199] In the third embodiment, the object-side surface of the second lens L2 is concave near the axis, the object-side surface of the fourth lens L4 is concave near the axis, and the image-side surface of the fourth lens L4 is convex near the axis. The fourth lens L4 has positive refractive power.

[0200] Tables 9 and 10 show the design data of the camera optical lens 30 according to the third embodiment of the present invention.

[0201] Table 9

[0202]

[0203]

[0204] Table 10 shows the aspherical data of each lens in the camera optical lens 30 of the third embodiment of the present invention.

[0205] Table 10

[0206]

[0207]

[0208] Tables 11 and 12 show the inflection point and stagnation point design data of each lens in the camera optical lens 30 of the third embodiment of the present invention.

[0209] Table 11

[0210] Number of recurve points Recurve point location 1 Recurve point position 2 Recurve point position 3 P1R1 1 1.385 / / P1R2 1 1.015 / / P2R1 1 0.515 / / P2R2 0 / / / P3R1 1 0.295 / / P3R2 2 0.315 1.335 / P4R1 2 1.255 1.585 / P4R2 2 1.395 1.775 / P5R1 2 0.475 1.955 / P5R2 2 0.255 1.895 / P6R1 3 0.775 2.125 2.925 P6R2 2 0.935 3.175 / P7R1 3 1.705 3.055 3.605 P7R2 2 0.595 4.045 /

[0211] Table 12

[0212] Number of outposts Location 1 P1R1 0 / P1R2 1 1.375 P2R1 1 0.795 P2R2 0 / P3R1 1 0.505 P3R2 1 0.535 P4R1 0 / P4R2 0 / P5R1 1 0.885 P5R2 1 0.455 P6R1 1 1.295 P6R2 1 1.445 P7R1 0 / P7R2 1 1.225

[0213] Figure 10 , Figure 11Axial aberration and magnification chromatic aberration are shown respectively after light with wavelengths of 436nm, 486nm, 546nm, 587nm and 656nm passes through the camera optical lens 30 of the third embodiment. Figure 12 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 546nm passes through the camera optical lens 30 of the third embodiment. Figure 12 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0214] Table 21 below lists the values ​​of each conditional expression in this embodiment according to the above-described conditional expressions. Clearly, the camera optical system of this embodiment satisfies the above-described conditional expressions.

[0215] In this embodiment, the entrance pupil diameter (ENPD) of the camera optical lens 30 is 2.971 mm, the full field of view image height (IH) is 5.120 mm, and the diagonal field of view (FOV) is 88.20°, which makes the camera optical lens 30 meet the design requirements of large aperture, wide angle, and ultra-thin design. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0216] (Fourth Implementation)

[0217] The fourth embodiment is basically the same as the first embodiment, and the symbols have the same meanings as in the first embodiment. For the structural form of the camera optical lens 40 in this fourth embodiment, please refer to... Figure 13 As shown, only the differences are listed below.

[0218] In this embodiment, the object-side surface of the second lens L2 is concave near the axis, and the image-side surface of the second lens L2 is convex near the axis; the object-side surface of the third lens L3 is concave near the axis, and the image-side surface of the third lens L3 is convex near the axis.

[0219] Tables 13 and 14 show the design data of the camera optical lens 40 according to the fourth embodiment of the present invention.

[0220] Table 13

[0221]

[0222] Table 14 shows the aspherical data of each lens in the camera optical lens 40 of the fourth embodiment of the present invention.

[0223] Table 14

[0224]

[0225]

[0226] Tables 15 and 16 show the inflection point and stagnation point design data of each lens in the camera optical lens 40 of the fourth embodiment of the present invention.

[0227] Table 15

[0228] Number of recurve points Recurve point location 1 Recurve point position 2 Recurve point position 3 Recurve point position 4 P1R1 1 1.415 / / / P1R2 1 1.095 / / / P2R1 1 0.425 / / / P2R2 1 0.075 / / / P3R1 1 1.255 / / / P3R2 1 1.285 / / / P4R1 2 1.275 1.665 / / P4R2 3 0.105 1.435 1.815 / P5R1 2 0.565 1.935 / / P5R2 4 0.265 1.925 2.155 2.325 P6R1 3 0.765 2.125 2.775 / P6R2 2 0.925 3.135 / / P7R1 4 1.645 3.485 3.495 3.795 P7R2 3 0.375 3.305 3.805 /

[0229] Table 16

[0230]

[0231]

[0232] Figure 14 , Figure 15 Axial aberration and magnification chromatic aberration are shown respectively after light with wavelengths of 436nm, 486nm, 546nm, 587nm and 656nm passes through the camera optical lens 40 of the fourth embodiment. Figure 16 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 546nm passes through the camera optical lens 40 of the fourth embodiment. Figure 16 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0233] Table 21 below lists the values ​​of each conditional expression in this embodiment according to the above-described conditional expressions. Clearly, the camera optical system of this embodiment satisfies the above-described conditional expressions.

[0234] In this embodiment, the entrance pupil diameter (ENPD) of the camera optical lens 40 is 2.974 mm, the full field of view (IH) is 5.120 mm, and the field of view (FOV) in the diagonal direction is 88.00°. This allows the camera optical lens 40 to meet the design requirements of large aperture, wide angle, and ultra-thin design. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0235] (Comparative Implementation Methods)

[0236] The symbols in the comparative embodiment have the same meanings as those in the first embodiment. Please refer to the structural form of the camera optical lens 50 in this comparative embodiment. Figure 17 As shown, only the differences are listed below.

[0237] In this embodiment, the object-side surface of the fourth lens L4 is concave near the axis, and the image-side surface of the fourth lens L4 is convex near the axis. The fourth lens L4 has positive refractive power. The first lens L1 is made of plastic.

[0238] Tables 17 and 18 show the design data of the camera optical lens 50 of the comparative embodiment.

[0239] Table 17

[0240]

[0241]

[0242] Table 18 shows the aspherical data of each lens in the camera optical lens 50 of the comparative embodiment.

[0243] Table 18

[0244]

[0245]

[0246] Tables 19 and 20 show the inflection point and stagnation point design data of each lens in the camera optical lens 50 of the comparative embodiment.

[0247] Table 19

[0248]

[0249]

[0250] Table 20

[0251] Number of outposts Location 1 Station location 2 P1R1 0 / / P1R2 1 1.455 / P2R1 0 / / P2R2 0 / / P3R1 1 0.825 / P3R2 2 0.905 1.505 P4R1 2 1.485 1.735 P4R2 0 / / P5R1 1 1.065 / P5R2 1 0.665 / P6R1 1 1.345 / P6R2 1 1.525 / P7R1 0 / / P7R2 1 1.245 /

[0252] Figure 18 , Figure 19 Axial aberration and magnification chromatic aberration are shown respectively after light with wavelengths of 436nm, 486nm, 546nm, 587nm and 656nm passes through the camera optical lens 50 of the comparative embodiment. Figure 20 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 546nm passes through the camera optical lens 50 of the comparative embodiment. Figure 20 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0253] Table 21 below lists the values ​​of each conditional expression in the comparative embodiment according to the above conditional expressions. Obviously, the camera optical lens 50 of the comparative embodiment does not satisfy the above conditional expression: 58.00≤v1≤82.00.

[0254] In this embodiment, the entrance pupil diameter (ENPD) of the camera optical lens 50 is 3.009 mm, the full field of view (IH) is 5.120 mm, and the diagonal field of view (FOV) is 87.40°. The camera optical lens 50 does not meet the design requirements of a large aperture, wide angle, and ultra-thin design.

[0255] Table 21

[0256] Parameters and conditional expressions Implementation Method 1 Implementation Method 2 Implementation Method 3 Implementation Method 4 Comparative implementation methods f 5.444 5.271 5.161 5.166 5.227 f1 5.184 5.077 4.946 5.123 4.808 f2 -25.164 -26.328 -18.917 -36.297 -14.575 f3 -150.171 -54.807 -164.170 -42.661 -75.306 f4 -193.180 -1394.323 199.005 -298.586 67.856 f5 404.967 59.746 61.688 37.164 56.259 f6 6.967 6.837 7.053 6.843 6.977 f7 -3.914 -3.579 -3.657 -3.475 -3.518 f12 6.161 5.968 6.260 5.787 6.548 v1 81.65 76.86 60.08 81.65 55.82 n3 2.16 1.85 1.69 2.16 2.16 FNO 1.74 1.74 1.74 1.74 1.74 TTL 6.14 6.11 6.14 6.02 6.08 FOV 85.20° 87.00° 88.20° 88.00° 87.40° IH 5.12 5.12 5.12 5.12 5.12

[0257] Those skilled in the art will understand that the above embodiments are specific implementations of the present invention, and in practical applications, various changes can be made in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A camera optical lens, characterized in that, The camera optical lens consists of seven lenses, which are arranged in the following order from the object side to the image side: a first lens with positive refractive power, wherein the object side of the first lens is convex at the paraxial direction and the image side of the first lens is concave at the paraxial direction; a second lens with negative refractive power; a third lens with negative refractive power; a fourth lens with negative refractive power, wherein the object side of the fourth lens is convex at the paraxial direction and the image side of the fourth lens is concave at the paraxial direction; a fifth lens with positive refractive power, wherein the object side of the fifth lens is convex at the paraxial direction and the image side of the fifth lens is concave at the paraxial direction; a sixth lens with positive refractive power, wherein the object side of the sixth lens is convex at the paraxial direction and the image side of the sixth lens is concave at the paraxial direction; and a seventh lens with negative refractive power, wherein the object side of the seventh lens is concave at the paraxial direction and the image side of the seventh lens is concave at the paraxial direction. Alternatively, the seven lenses, from the object side to the image side, are arranged in the following order: a first lens with positive refractive power, wherein the object side of the first lens is convex at the paraxial direction and the image side of the first lens is concave at the paraxial direction; a second lens with negative refractive power, wherein the object side of the second lens is concave at the paraxial direction and the image side of the second lens is concave at the paraxial direction; a third lens with negative refractive power, wherein the object side of the third lens is convex at the paraxial direction and the image side of the third lens is concave at the paraxial direction; and a fourth lens with positive refractive power, wherein the object side of the third lens is convex at the paraxial direction and the image side of the third lens is concave at the paraxial direction; and a fifth lens with positive refractive power, wherein the object side of the third lens is convex at the paraxial direction and the image side of the third lens is concave at the paraxial direction; and a sixth lens with positive refractive power, wherein the object side of the third lens is convex at the paraxial direction and the image side of the third lens is concave at the paraxial direction; and a seventh ... The fourth lens has an object-side surface that is concave paraxially, and an image-side surface that is convex paraxially; the fifth lens has positive refractive power, with its object-side surface convex paraxially and its image-side surface concave paraxially; the sixth lens has positive refractive power, with its object-side surface convex paraxially and its image-side surface concave paraxially; and the seventh lens has negative refractive power, with both its object-side surface and image-side surface concave paraxially. The first lens has a dispersion coefficient of v1, and the third lens has a refractive index of n3, satisfying the following relationship: 58.00≤v1≤82.00； 1.69≤n3≤2.20； The central radius of curvature of the object side of the fourth lens is R7, and the central radius of curvature of the image side of the fourth lens is R8, and the following relationship is satisfied: 2.00≤R7 / R8.

2. The camera optical lens according to claim 1, characterized in that, The central radius of curvature of the image side of the seventh lens is R14, and the central radius of curvature of the object side of the seventh lens is R13, and they satisfy the following relationship: R14 / R13≤-2.

00.

3. The camera optical lens according to claim 1, characterized in that, The focal length of the first lens is f1, the focal length of the imaging optical lens is f, the central radius of curvature of the object side of the first lens is R1, the central radius of curvature of the image side of the first lens is R2, the axial thickness of the first lens is d1, and the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: 0.48≤f1 / f≤1.49; -4.06≤(R1+R2) / (R1-R2)≤-1.20; 0.06≤d1 / TTL≤0.

20.

4. The camera optical lens according to claim 1, characterized in that, The focal length of the second lens is f2, the focal length of the imaging optical lens is f, the central radius of curvature of the object side of the second lens is R3, the central radius of curvature of the image side of the second lens is R4, the axial thickness of the second lens is d3, and the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: -14.05≤f² / f≤-2.44; -2.19≤(R3+R4) / (R3-R4)≤3.04; 0.02≤d3 / TTL≤0.

09.

5. The camera optical lens according to claim 1, characterized in that, The focal length of the third lens is f3, the focal length of the imaging optical lens is f, the central radius of curvature of the object side of the third lens is R5, the central radius of curvature of the image side of the third lens is R6, the axial thickness of the third lens is d5, and the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: -63.62≤f3 / f≤-5.51; -2.94≤(R5+R6) / (R5-R6)≤17.78; 0.02≤d5 / TTL≤0.

07.

6. The camera optical lens according to claim 1, characterized in that, The fourth lens has a focal length of f4, the imaging optical lens has a focal length of f, the fourth lens has an on-axis thickness of d7, and the imaging optical lens has a total optical length of TTL, and satisfies the following relationship: -529.05≤f4 / f≤57.84; 0.03≤d7 / TTL≤0.

10.

7. The camera optical lens according to claim 1, characterized in that, The fifth lens has a focal length of f5, the camera optical lens has a focal length of f, the central radius of curvature of the object side of the fifth lens is R9, the central radius of curvature of the image side of the fifth lens is R10, the axial thickness of the fifth lens is d9, and the total optical length of the camera optical lens is TTL, and satisfies the following relationship: 3.60≤f5 / f≤111.58; -155.10≤(R9+R10) / (R9-R10)≤-2.94; 0.03≤d9 / TTL≤0.

10.

8. The camera optical lens according to claim 1, characterized in that, The sixth lens has a focal length of f6, the camera optical lens has a focal length of f, the object-side radius of curvature of the sixth lens is R11, the image-side radius of curvature of the sixth lens is R12, the axial thickness of the sixth lens is d11, and the total optical length of the camera optical lens is TTL, satisfying the following relationship: 0.64≤f6 / f≤2.05; -5.12≤(R11+R12) / (R11-R12)≤-1.48; 0.04≤d11 / TTL≤0.

11.

9. The camera optical lens according to claim 1, characterized in that, The seventh lens has a focal length of f7, the imaging optical lens has a focal length of f, the seventh lens has an on-axis thickness of d13, and the imaging optical lens has a total optical length of TTL, and satisfies the following relationship: -1.44≤f7 / f≤-0.45; 0.04≤d13 / TTL≤0.

16.

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

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

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

Images