Imaging optical lens

Abstract

An imaging optical lens (10, 20, 30, 40, 50, 60, 70), consisting of seven lenses, which are, sequentially from an object side to an image side, 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). The focal length of the imaging optical lens (10, 20, 30, 40, 50, 60, 70) is defined as f, the focal length of the seventh lens (L7) is defined as f7, the field angle of the imaging optical lens (10, 20, 30, 40, 50, 60, 70) at a 1.0 field of view is defined as FOV, the image height of the imaging optical lens (10, 20, 30, 40, 50, 60, 70) at a 1.0 field of view is defined as IH, the central radius of curvature of an object-side surface of the sixth lens (L6) is defined as R11, and the central radius of curvature of an image-side surface of the sixth lens (L6) is defined as R12, satisfying the following relational expressions: 3.95≤f7 / f≤6.00, 100.00º≤(FOV*f) / IH≤120.00º, and 3.50≤(R11+R12) / (R11-R12)≤70.00. The imaging optical lens (10, 20, 30, 40, 50, 60, 70) has a good optical performance and meets the design requirements of a large aperture and an ultra-wide angle.

Description

Camera optical lens [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 action cameras, 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 smartphones, the demand for miniaturized camera lenses has been increasing. The photosensitive devices of general camera lenses are nothing more than charge-coupled devices (CCD) or complementary metal-oxide semiconductor sensors (CMOS sensors). Due to the advancement of semiconductor manufacturing technology, the pixel size of photosensitive devices has been reduced. In addition, the current trend of electronic products is to have good functions and a thin and small shape. Therefore, miniaturized camera lenses with good image quality have become the mainstream in the market.

[0003] To achieve better image quality, traditional lenses used in mobile phone cameras often employ three-element, four-element, or even five-element or six-element lens structures. However, with technological advancements and increasing user demands, as the pixel area of ​​image sensors continues to shrink and system requirements for image quality rise, seven-element lens structures have gradually emerged in lens designs. While common seven-element lenses already possess good optical performance, their optical power, lens spacing, and lens shape still exhibit certain limitations. This results in the lens structure, while offering good optical performance, being unable to meet the design requirements of large apertures and ultra-wide-angle lenses. [Summary of the Invention]

[0004] To address the aforementioned problems, the present invention aims to provide a camera optical lens that possesses excellent optical performance while meeting the design requirements of a large aperture and ultra-wide-angle capability.

[0005] To achieve the above objectives, the present invention provides a camera optical lens comprising seven lenses, which are arranged in the following order from the object side to the image side: a first lens with negative refractive power, a second lens with positive refractive power, a third lens with positive refractive power, a fourth lens with positive refractive power, a fifth lens with negative refractive power, a sixth lens with refractive power, and a seventh lens with positive refractive power.

[0006] The focal length of the camera optical lens is f, the focal length of the seventh lens is f7, the field of view of the camera optical lens in the 1.0 field of view is FOV, the image height of the camera optical lens in the 1.0 field of view is IH, the central radius of curvature of the object side of the sixth lens is R11, and the central radius of curvature of the image side of the sixth lens is R12, satisfying the following relationship:

[0007] 3.95≤f7 / f≤6.00;

[0008] 100.00≤(FOV*f) / IH≤120.00;

[0009] 3.50≤(R11+R12) / (R11-R12)≤70.00.

[0010] Preferably, the refractive index of the first lens is n1, and it satisfies the following relationship:

[0011] 1.70≤n1≤2.10.

[0012] Preferably, the focusing distance at infinity of the camera optical lens is BF, the total optical length of the camera optical lens is TTL, and the following relationship is satisfied:

[0013] 0.10≤BF / TTL≤0.25.

[0014] Preferably, the axial thickness of the second lens is d3, and the axial thickness of the third lens is d5, satisfying the following relationship:

[0015] 1.40≤d3 / d5≤3.00.

[0016] 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.

[0017] The focal length of the first lens is f1, 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, and the axial thickness of the first lens is d1, and they satisfy the following relationship:

[0018] -1.50≤f1 / f≤-1.10;

[0019] 1.10≤(R1+R2) / (R1-R2)≤1.35;

[0020] 0.03≤d1 / TTL≤0.17.

[0021] Preferably, the object-side surface of the second lens is concave near the axis, and the image-side surface of the second lens is convex near the axis;

[0022] The focal length of the second lens is f2, 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, and the axial thickness of the second lens is d3, and they satisfy the following relationship:

[0023] 5.60≤f² / f≤7.80;

[0024] 0.99≤(R3+R4) / (R3-R4)≤1.33;

[0025] 0.15≤d3 / TTL≤0.24.

[0026] Preferably, the object-side surface of the third lens is convex at the paraxial position, and the image-side surface of the third lens is convex at the paraxial position.

[0027] The third lens has a focal length of f3, a central radius of curvature of the object side of the third lens of R5, a central radius of curvature of the image side of the third lens of R6, and an axial thickness of d5, and satisfies the following relationship:

[0028] 1.52≤f3 / f≤1.80;

[0029] -0.21≤(R5+R6) / (R5-R6)≤-0.17;

[0030] 0.06≤d5 / TTL≤0.13.

[0031] Preferably, the object-side surface of the fourth lens is convex at the paraxial position, and the image-side surface of the fourth lens is convex at the paraxial position.

[0032] The fourth lens has a focal length of f4, a central radius of curvature of the object side of the fourth lens of R7, a central radius of curvature of the image side of the fourth lens of R8, and an axial thickness of d7, and satisfies the following relationship:

[0033] 1.70≤f4 / f≤1.96;

[0034] -0.85≤(R7+R8) / (R7-R8)≤-0.50;

[0035] 0.04≤d7 / TTL≤0.06.

[0036] Preferably, the object-side surface of the fifth lens is concave at the paraxial position, and the image-side surface of the fifth lens is concave at the paraxial position.

[0037] The fifth lens has a focal length of f5, a central radius of curvature of the object side of the fifth lens of R9, a central radius of curvature of the image side of the fifth lens of R10, and an axial thickness of d9, and satisfies the following relationship:

[0038] -1.60≤f5 / f≤-1.40;

[0039] 0.20≤(R9+R10) / (R9-R10)≤0.42;

[0040] 0.02≤d9 / TTL≤0.04.

[0041] 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.

[0042] The sixth lens has a focal length of f6 and an on-axis thickness of d11, and satisfies the following relationship:

[0043] -13.50≤f6 / f≤72.00;

[0044] 0.02≤d11 / TTL≤0.05.

[0045] Preferably, the object-side surface of the seventh lens is convex at the paraxial position, and the image-side surface of the seventh lens is concave at the paraxial position.

[0046] The seventh lens has a central radius of curvature of R13 on its object-side surface, a central radius of curvature of R14 on its image-side surface, and an axial thickness of d13, satisfying the following relationship:

[0047] -3.80≤(R13+R14) / (R13-R14)≤-2.20;

[0048] 0.02≤d13 / TTL≤0.09.

[0049] Preferably, the first lens, the third lens, and the seventh lens are all made of glass, while the second lens, the fourth lens, the fifth lens, and the sixth lens are all made of plastic.

[0050] Preferably, the aperture value FNO of the camera optical lens is ≤2.30; the field of view (FOV) of the 1.0 field of view of the camera optical lens is ≥154.67°.

[0051] 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 a large aperture and ultra-wide angle, 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]

[0052] 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:

[0053] Figure 1 is a schematic diagram of the structure of the camera optical lens in Embodiment 1;

[0054] Figure 2 is a schematic diagram of the magnification chromatic aberration of the camera optical lens shown in Figure 1;

[0055] Figure 3 is a schematic diagram of the axial aberration of the camera optical lens shown in Figure 1;

[0056] Figure 4 is a schematic diagram of the field curvature and distortion of the camera optical lens shown in Figure 1;

[0057] Figure 5 is a schematic diagram of the camera optical lens in Embodiment 2;

[0058] Figure 6 is a schematic diagram of the magnification chromatic aberration of the camera optical lens shown in Figure 5;

[0059] Figure 7 is a schematic diagram of the axial aberration of the camera optical lens shown in Figure 5;

[0060] Figure 8 is a schematic diagram of the field curvature and distortion of the camera optical lens shown in Figure 5;

[0061] Figure 9 is a schematic diagram of the camera optical lens in Embodiment 3;

[0062] Figure 10 is a schematic diagram of the magnification chromatic aberration of the camera optical lens shown in Figure 9;

[0063] Figure 11 is a schematic diagram of the axial aberration of the camera optical lens shown in Figure 9;

[0064] Figure 12 is a schematic diagram of the field curvature and distortion of the camera optical lens shown in Figure 9;

[0065] Figure 13 is a schematic diagram of the camera optical lens in Embodiment 4;

[0066] Figure 14 is a schematic diagram of the magnification chromatic aberration of the camera optical lens shown in Figure 13;

[0067] Figure 15 is a schematic diagram of the axial aberration of the camera optical lens shown in Figure 13;

[0068] Figure 16 is a schematic diagram of the field curvature and distortion of the camera optical lens shown in Figure 13;

[0069] Figure 17 is a schematic diagram of the structure of the camera optical lens in Embodiment 5;

[0070] Figure 18 is a schematic diagram of the magnification chromatic aberration of the camera optical lens shown in Figure 17;

[0071] Figure 19 is a schematic diagram of the axial aberration of the camera optical lens shown in Figure 17;

[0072] Figure 20 is a schematic diagram of the field curvature and distortion of the camera optical lens shown in Figure 17;

[0073] Figure 21 is a schematic diagram of the structure of the camera optical lens in Embodiment Six;

[0074] Figure 22 is a schematic diagram of the magnification chromatic aberration of the camera optical lens shown in Figure 21;

[0075] Figure 23 is a schematic diagram of the axial aberration of the camera optical lens shown in Figure 21;

[0076] Figure 24 is a schematic diagram of the field curvature and distortion of the camera optical lens shown in Figure 21;

[0077] Figure 25 is a schematic diagram of the structure of the camera optical lens in Embodiment Seven;

[0078] Figure 26 is a schematic diagram of the magnification chromatic aberration of the camera optical lens shown in Figure 25;

[0079] Figure 27 is a schematic diagram of the axial aberration of the camera optical lens shown in Figure 25;

[0080] Figure 28 is a schematic diagram of the field curvature and distortion of the camera optical lens shown in Figure 25;

[0081] Figure 29 is a schematic diagram of the structure of the camera optical lens in the comparative embodiment;

[0082] Figure 30 is a schematic diagram of the magnification chromatic aberration of the camera optical lens shown in Figure 29;

[0083] Figure 31 is a schematic diagram of the axial aberration of the camera optical lens shown in Figure 29;

[0084] Figure 32 is a schematic diagram of the field curvature and distortion of the camera optical lens shown in Figure 29.

Detailed Implementation Methods

[0085] 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.

[0086] Please refer to the accompanying drawings. The technical solution of the present invention provides a camera optical lens 10, 20, 30, 40, 50, 60, and 70. Figures 1, 5, 9, 13, 17, 21, and 25 show the camera optical lenses 10, 20, 30, 40, 50, 60, and 70 of the present invention, which together comprise nine lenses. Specifically, the camera optical lens, from the object side to the image side, consists of: a first lens L1, a second lens L2, a third lens L3, an aperture S1, a fourth lens L4, a fifth lens L5, a sixth lens L6, and a seventh lens L7. An optical filter GF or other optical elements may be disposed between the seventh lens L7 and the image plane S1.

[0087] The seven lenses, from the object side to the image side, are as follows: a first lens L1 with negative refractive power, a second lens L2 with positive refractive power, a third lens L3 with positive refractive power, a fourth lens L4 with positive refractive power, a fifth lens L5 with negative refractive power, a sixth lens L6 with either positive or negative refractive power, and a seventh lens L7 with positive refractive power.

[0088] Define the focal lengths of the camera optical lenses 10, 20, 30, 40, 50, 60, and 70 as f, and the focal length of the seventh lens L7 as f7, satisfying the following relationship 3.95≤f7 / f≤6.00; within the range of the condition, the focal length of the last lens can be controlled, which helps to collect light and ensure the amount of light transmitted.

[0089] The field of view (FOV) of a 1.0 field of view camera optical lens (10, 20, 30, 40, 50, 60, 70) is defined as FOV, and the image height (IH) of a 1.0 field of view camera optical lens (10, 20, 30, 40, 50, 60, 70) is defined as IH, satisfying the following relationship: 100.00≤(FOV*f) / IH≤120.00; within the range of the condition, a large field of view and a long focal length can be taken into account, achieving the effect of mid-range imaging.

[0090] 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: 3.50≤(R11+R12) / (R11-R12)≤70.00. This defines the shape of the sixth lens L6, which, within the specified range, can mitigate the degree of light eccentricity after passing through the lens, effectively correcting chromatic aberration and ensuring that the chromatic aberration |LC|≤10.0μm.

[0091] Under the above conditions, the camera optical lenses 10, 20, 30, 40, 50, 60, and 70 have good optical performance while meeting the design requirements of large aperture, ultra-wide angle, and ultra-thin design. Based on the characteristics of these camera optical lenses 10, 20, 30, 40, 50, 60, and 70, they are particularly suitable for action cameras, mobile phone camera lens assemblies, and web camera lenses composed of high-pixel CCD, CMOS, and other imaging elements.

[0092] Based on the above conditional expressions and the functions that can be achieved, the characteristics of each lens are further refined as follows.

[0093] The refractive index of the first lens L1 is defined as n1, satisfying the following relationship: 1.70 ≤ n1 ≤ 2.10. The first lens L1 is preferably made of a high refractive index material, which is beneficial for reducing the front aperture and improving image quality.

[0094] Let BF be the axial distance from the image side surface of the seventh lens L7 to the image plane. Let TTL be the total optical length of the imaging lenses 10, 20, 30, 40, 50, 60, and 70, satisfying the following relationship: 0.10 ≤ BF / TTL ≤ 0.25. Based on miniaturization, a longer back focal length facilitates module assembly; a shorter total length results in a compact structure, reduces lens sensitivity to MTF, improves production yield, and lowers production costs.

[0095] The on-axis thickness of the second lens L2 is defined as d3, and the on-axis thickness of the third lens L3 is defined as d5, satisfying the following relationship: 1.40 ≤ d3 / d5 ≤ 3.00. This specifies the ratio of the core thicknesses of the second lens L2 and the third lens L3, which, within the range of the condition, helps to compress the overall length of the optical system.

[0096] 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 object-side and image-side surfaces of the first lens L1 can also be configured with other concave and convex distributions.

[0097] The focal lengths of the camera optical lenses 10, 20, 30, 40, 50, 60, and 70 are defined as f, and the focal length of the first lens L1 is defined as f1, satisfying the following relationship: -1.50≤f1 / f≤-1.10; through the reasonable allocation of optical power, the system has better imaging quality and lower sensitivity.

[0098] The central radius of curvature of the object side of the first lens L1 is R1, and the central radius of curvature of the image side of the first lens L1 is R2. 1.10≤(R1+R2) / (R1-R2)≤1.35; the shape of the first lens L1 is specified. Within this range, with the development of ultra-thin wide-angle lenses, it is beneficial to correct aberrations and other problems in off-axis drawing angles.

[0099] The on-axis thickness of the first lens L1 is d1, and the total optical length of the imaging optical lenses 10, 20, 30, 40, 50, 60, and 70 is TTL, satisfying the following relationship: 0.03 ≤ d1 / TTL ≤ 0.17. Within this condition range, it is beneficial to achieve ultra-thinness.

[0100] 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 and image-side surfaces of the second lens L2 can also be configured with other concave and convex distributions.

[0101] The focal lengths of the camera optical lenses 10, 20, 30, 40, 50, 60, and 70 are defined as f, and the focal length of the second lens L2 is defined as f2, satisfying the following relationship: 5.60 ≤ f2 / f ≤ 7.80. Through the reasonable allocation of optical power, the system achieves better imaging quality and lower sensitivity.

[0102] The central radius of curvature of the object side of the second lens L2 is R3, and the central radius of curvature of the image side of the second lens L2 is R4, satisfying the following relationship: 0.99≤(R3+R4) / (R3-R4)≤1.33. This defines the shape of the second lens L2. Within this range, with the development of ultra-thin wide-angle lenses, it is beneficial for correcting aberrations in off-axis drawing angles.

[0103] The axial thickness of the second lens L2 is d3, and the total optical length of the imaging optical lenses 10, 20, 30, 40, 50, 60, and 70 is TTL, where 0.15 ≤ d3 / TTL ≤ 0.24. Within this conditional range, it is beneficial to achieve ultra-thinness.

[0104] 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 also convex near the axis. The object-side and image-side surfaces of the third lens L3 can also be configured with other concave and convex distributions.

[0105] The focal lengths of the camera optical lenses 10, 20, 30, 40, 50, 60, and 70 are defined as f, and the focal length of the third lens L3 is defined as f3, satisfying the following relationship: 1.52≤f3 / f≤1.80; by reasonably allocating the optical power of the third lens L3, the system has better imaging quality and lower sensitivity.

[0106] The central radius of curvature of the object side of the third lens L3 is R5, and the central radius of curvature of the image side of the third lens L3 is R6, and the following relationship is satisfied: -0.21≤(R5+R6) / (R5-R6)≤-0.17; the shape of the third lens L3 is specified. When within the specified range, with the development of ultra-thin wide-angle lenses, it is beneficial to correct aberrations and other problems in off-axis drawing angles.

[0107] The on-axis thickness of the third lens L3 is d5, and the total optical length of the imaging optical lenses 10, 20, 30, 40, 50, 60, and 70 is TTL, satisfying the following relationship: 0.06 ≤ d5 / TTL ≤ 0.13. Within this condition range, it is beneficial to achieve ultra-thinness.

[0108] 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 also convex near the axis. The object-side and image-side surfaces of the fourth lens L4 can also be configured with other concave and convex distributions.

[0109] The focal lengths of the camera optical lenses 10, 20, 30, 40, 50, 60, and 70 are defined as f, and the focal length of the fourth lens L4 is defined as f4, satisfying the following relationship: 1.70≤f4 / f≤1.96; by controlling the positive optical power of the fourth lens L4 within a reasonable range, it is beneficial to correct the aberrations of the optical system.

[0110] The center radius of curvature of the object side of the fourth lens L4 is R7, and the center radius of curvature of the image side of the fourth lens L4 is R8, and the following relationship is satisfied: -0.85≤(R7+R8) / (R7-R8)≤-0.50; the shape of the fourth lens L4 is specified, and when it is within the range, as the lens develops towards ultra-thin wide-angle, it is beneficial to correct the on-axis chromatic aberration problem.

[0111] The on-axis thickness of the fourth lens L4 is d7, and the total optical length of the imaging optical lenses 10, 20, 30, 40, 50, 60, and 70 is TTL, satisfying the following relationship: 0.04 ≤ d7 / TTL ≤ 0.06. Within this condition range, it is beneficial to achieve ultra-thinness.

[0112] In this embodiment, the object-side surface of the fifth lens L5 is concave near the axis, and the image-side surface of the fifth lens L5 is also concave near the axis. The object-side and image-side surfaces of the fifth lens L5 can also be configured with other concave or convex distributions.

[0113] The focal lengths of the camera optical lenses 10, 20, 30, 40, 50, 60, and 70 are defined as f, and the focal length of the fifth lens L5 is defined as f5, satisfying the following relationship: -1.60≤f5 / f≤-1.40; the limitation on the fifth lens L5 can effectively make the light angle of the camera optical lens 10 smooth and reduce tolerance sensitivity.

[0114] The central radius of curvature of the object side of the fifth lens L5 is R9, and the central radius of curvature of the image side of the fifth lens L5 is R10, and they satisfy the following relationship: 0.20≤(R9+R10) / (R9-R10)≤0.42; the shape of the fifth lens L5 is specified, which is beneficial to the forming of the fifth lens L5. When within the range, with the development of ultra-thin wide-angle lenses, it is beneficial to correct aberrations and other problems in off-axis drawing angles.

[0115] The fifth lens L5 has an on-axis thickness of d9, and the total optical length of the imaging optical lenses 10, 20, 30, 40, 50, 60, and 70 is TTL, satisfying the following relationship: 0.02 ≤ d9 / TTL ≤ 0.04. Within this condition range, it is beneficial to achieve ultra-thinness.

[0116] 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 object-side and image-side surfaces of the sixth lens L6 can be configured with other concave and convex distributions.

[0117] The focal lengths of the camera optical lenses 10, 20, 30, 40, 50, 60, and 70 are defined as f, and the focal length of the sixth lens L6 is defined as f6, satisfying the following relationship: -13.50≤f6 / f≤72.00; by reasonably allocating the optical power of the sixth lens L6, the system has better imaging quality and lower sensitivity.

[0118] The axial thickness of the sixth lens L6 is d11, and the total optical length of the imaging optical lenses 10, 20, 30, 40, 50, 60, and 70 is TTL, satisfying the following relationship: 0.02 ≤ d11 / TTL ≤ 0.05. Within this conditional range, it is beneficial to achieve ultra-thinness.

[0119] In this embodiment, the object-side surface of the seventh lens L7 is convex near the axis, and the image-side surface of the seventh lens L7 is concave near the axis. The object-side and image-side surfaces of the seventh lens L7 can also be configured with other concave and convex distributions.

[0120] The central radius of curvature of the object side of the seventh lens L7 is R13, and the central radius of curvature of the image side of the seventh lens L7 is R14, and they satisfy the following relationship: -3.80≤(R13+R14) / (R13-R14)≤-2.20; This defines the shape of the seventh lens L7. Within this range, as lenses develop towards ultra-thin and wide-angle lenses, it is beneficial for correcting on-axis chromatic aberration.

[0121] The axial thickness of the seventh lens L7 is d13, and the total optical length of the imaging optical lenses 10, 20, 30, 40, 50, 60, and 70 is TTL, satisfying the following relationship: 0.02≤d13 / TTL≤0.09. Within this condition range, it is beneficial to achieve ultra-thinness.

[0122] In this embodiment, the aperture value FNO of the camera optical lenses 10, 20, 30, 40, 50, 60, and 70 is defined as ≤2.30; the field of view (FOV) of the camera optical lenses 10, 20, 30, 40, 50, 60, and 70 at a field of view of 1.0 is defined as ≥154.67. This achieves wide-angle viewing.

[0123] In this embodiment, the total optical length (TTL) of the camera optical lenses 10, 20, 30, 40, 50, 60, and 70 is less than or equal to 11.25 mm, which is beneficial for achieving ultra-thin design.

[0124] This design allows the total optical length (TTL) of the overall camera optical lens (10, 20, 30, 40, 50, 60, 70) to be kept as short as possible, maintaining its miniaturized characteristics.

[0125] FNO refers to the focal number of the camera optical lens (10, 20, 30, 40, 50, 60, 70), which is the ratio of the effective focal length to the entrance pupil diameter. It satisfies the following relationship: FNO ≤ 2.37, which is beneficial for achieving a large aperture and good imaging performance. The field of view (FOV) satisfies the following relationship: FOV ≥ 154°, which is beneficial for achieving a wide-angle view. In other words, when the above relationships are satisfied, the camera optical lenses (10, 20, 30, 40, 50, 60, 70) achieve good optical imaging performance while also meeting the design requirements of a large aperture and ultra-thin design. Based on the characteristics of these camera optical lenses (10, 20, 30, 40, 50, 60, 70), they are particularly suitable for action cameras, mobile phone camera lens assemblies, and web camera lenses composed of high-pixel CCD, CMOS, and other imaging elements.

[0126] The first lens L1, the third lens L3, and the seventh lens L7 are all made of glass, while the second lens L2, the fourth lens L4, the fifth lens L5, and the sixth lens L6 are all made of plastic. Other materials may also be used for the lenses.

[0127] The camera optical lens 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, center radius of curvature, on-axis thickness, inversion point position, and stagnation point position are mm.

[0128] TTL: Total optical length (the axial distance from the object surface of the first lens L1 to the image plane Si), in mm.

[0129] Aperture value FNO: refers to the ratio of the effective focal length to the entrance pupil diameter of a camera lens.

[0130] Image height IH of 1.0 field of view: The field of view height corresponding to the effective pixel of the sensor (i.e., half the diagonal length of the effective pixel area of ​​the sensor);

[0131] 1.0 Field of View (FOV): The field of view angle corresponding to the effective pixel of the sensor;

[0132] 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.

[0133] The technical solution of the present invention will be described in detail below with seven embodiments. At the same time, a comparative embodiment is provided for reference. The technical effects of the present invention cannot be achieved when the above-described conditions are not met.

[0134] (First Implementation)

[0135] Figure 1 shows the camera optical lens 20 according to the first embodiment of the present invention. The sixth lens L6 has negative refractive power.

[0136] Tables 1 and 2 show the design data of the camera optical lens 10 according to the first embodiment of the present invention.

[0137] Table 1

[0138] The meanings of each symbol are as follows.

[0139] S1: Aperture;

[0140] R: Radius of curvature at the center of the optical surface;

[0141] R1: The central radius of curvature of the object-side surface of the first lens L1;

[0142] R2: The central radius of curvature of the image-side surface of the first lens L1;

[0143] R3: The central radius of curvature of the object-side surface of the second lens L2;

[0144] R4: The central radius of curvature of the image-side surface of the second lens L2;

[0145] R5: The central radius of curvature of the object-side surface of the third lens L3;

[0146] R6: The central radius of curvature of the image-side surface of the third lens L3;

[0147] R7: The central radius of curvature of the object side surface of the fourth lens L4;

[0148] R8: The central radius of curvature of the image-side surface of the fourth lens L4;

[0149] R9: The central radius of curvature of the object-side surface of the fifth lens L5;

[0150] R10: The central radius of curvature of the image-side surface of the fifth lens L5;

[0151] R11: The central radius of curvature of the object-side surface of the sixth lens L6;

[0152] R12: The central radius of curvature of the image-side surface of the sixth lens L6;

[0153] R13: The central radius of curvature of the object-side surface of the seventh lens L7;

[0154] R14: The central radius of curvature of the image-side surface of the seventh lens L7;

[0155] R15: The center radius of curvature of the object side surface of the optical filter GF;

[0156] R16: Radius of curvature of the center of the image side of the optical filter GF;

[0157] d: Axial thickness of the lens, axial distance between lenses;

[0158] d0: The on-axis distance from aperture S1 to the object-side surface of the first lens L1;

[0159] d1: On-axis thickness of the first lens L1;

[0160] 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;

[0161] d3: On-axis thickness of the second lens L2;

[0162] d4: The axial distance from the image-side surface of the second lens L2 to the object-side surface of the third lens L3;

[0163] d5: On-axis thickness of the third lens L3;

[0164] 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;

[0165] d7: On-axis thickness of the fourth lens L4;

[0166] 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;

[0167] d9: On-axis thickness of the fifth lens L5;

[0168] d10: The axial distance from the image-side surface of the fifth lens L5 to the object-side surface of the sixth lens L6;

[0169] d11: On-axis thickness of the sixth lens L6;

[0170] d12: The axial distance from the image-side surface of the sixth lens L6 to the object-side surface of the seventh lens L7;

[0171] d13: On-axis thickness of the seventh lens L7;

[0172] d14: The on-axis distance from the image side of the seventh lens L7 to the object side of the optical filter GF;

[0173] d15: On-axis thickness of the optical filter GF;

[0174] d16: The on-axis distance from the image-side surface of the optical filter GF to the image plane Si;

[0175] nd: Refractive index of the d-line (the d-line is green light with a wavelength of 550 nm);

[0176] nd1: The refractive index of the d-line of the first lens L1;

[0177] nd2: The refractive index of the d-line of the second lens L2;

[0178] nd3: The refractive index of the d-line of the third lens L3;

[0179] nd4: The refractive index of the d-line of the fourth lens L4;

[0180] nd5: The refractive index of the d-line of the fifth lens L5;

[0181] nd6: The refractive index of the d-line of the sixth lens L6;

[0182] nd7: The refractive index of the d-line of the seventh lens L7;

[0183] ndg: The refractive index of the d-line of the optical filter GF;

[0184] vd: Abbe number;

[0185] v1: Abbe number of the first lens L1;

[0186] v2: Abbe number of the second lens L2;

[0187] v3: Abbe number of the third lens L3;

[0188] v4: Abbe number of the fourth lens L4;

[0189] v5: Abbe number of the fifth lens L5;

[0190] v6: Abbe number of the sixth lens L6;

[0191] v7: Abbe number of the seventh lens L7;

[0192] vg: Abbe number of the optical filter GF.

[0193] Table 2 shows the aspherical data of each lens in the camera optical lens 10 of the first embodiment of the present invention.

[0194] Table 2

[0195] Both R1 and R2 are spherical surfaces.

[0196] For convenience, the aspherical surfaces of each lens surface are those shown in formula (1) above. However, the present invention is not limited to the aspherical polynomial form represented by 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 (1).

[0197] 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).

[0198] Figure 2 shows a magnification chromatic aberration diagram of light with wavelengths of 430.0 nm, 449.0 nm, 485.0 nm, 522.0 nm, 558.0 nm, 595.0 nm, 631.0 nm, and 660.0 nm after passing through the imaging optical lens 10 of the first embodiment. Figure 3 shows a schematic diagram of axial aberration of light with wavelengths of 430.0 nm, 449.0 nm, 485.0 nm, 522.0 nm, 558.0 nm, 595.0 nm, 631.0 nm, and 660.0 nm after passing through the imaging optical lens 10 of the first embodiment. Figure 4 shows a schematic diagram of field curvature and distortion of light with a wavelength of 522.0 nm after passing through the imaging optical lens 10 of the first embodiment. In Figure 4, the field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0199] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 10 is 2.299 mm, the image height IH of the 1.0 field of view is 3.000 mm, and the field of view FOV of the 1.0 field of view is 164.05°. The camera optical lens 10 meets the design requirements of large aperture, ultra-wide angle, and ultra-thin design. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0200] (Second Implementation)

[0201] The symbols in the second embodiment have the same meanings as those in the first embodiment.

[0202] Figure 5 shows the camera optical lens 20 of the second embodiment of the present invention.

[0203] Tables 3 and 4 show the design data of the camera optical lens 20 according to the second embodiment of the present invention.

[0204] Table 3

[0205] Table 4 shows the aspherical data of each lens in the camera optical lens 20 of the second embodiment of the present invention.

[0206] Table 4

[0207] Figure 6 shows a magnification chromatic aberration diagram of light with wavelengths of 430.0 nm, 449.0 nm, 485.0 nm, 522.0 nm, 558.0 nm, 595.0 nm, 631.0 nm, and 660.0 nm after passing through the imaging optical lens 20 of the second embodiment. Figure 7 shows a schematic diagram of axial aberration of light with wavelengths of 430.0 nm, 449.0 nm, 485.0 nm, 522.0 nm, 558.0 nm, 595.0 nm, 631.0 nm, and 660.0 nm after passing through the imaging optical lens 20 of the second embodiment. Figure 8 shows a schematic diagram of field curvature and distortion of light with a wavelength of 522.0 nm after passing through the imaging optical lens 20 of the second embodiment. In Figure 8, the field curvature S is the sagittal field curvature, and T is the meridional field curvature.

[0208] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 20 is 2.300mm, the image height IH of the 1.0 field of view is 2.950mm, and the field of view FOV of the 1.0 field of view is 158.84°, which enables the camera optical lens 20 to meet the design requirements of large aperture, ultra-wide angle, and ultra-thin design. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0209] (Third Implementation)

[0210] The symbols in the third embodiment have the same meanings as those in the first embodiment.

[0211] Figure 9 shows the camera optical lens 30 of the third embodiment of the present invention.

[0212] Tables 5 and 6 show the design data of the camera optical lens 30 according to the third embodiment of the present invention.

[0213] Table 5

[0214] Table 6 shows the aspherical data of each lens in the camera optical lens 30 of the third embodiment of the present invention.

[0215] Table 6

[0216] Figure 10 shows a magnification chromatic aberration diagram of light with wavelengths of 430.0 nm, 449.0 nm, 485.0 nm, 522.0 nm, 558.0 nm, 595.0 nm, 631.0 nm, and 660.0 nm after passing through the imaging optical lens 30 of the first embodiment. Figure 11 shows a schematic diagram of axial aberration of light with wavelengths of 430.0 nm, 449.0 nm, 485.0 nm, 522.0 nm, 558.0 nm, 595.0 nm, 631.0 nm, and 660.0 nm after passing through the imaging optical lens 30 of the third embodiment. Figure 12 shows a schematic diagram of field curvature and distortion of light with a wavelength of 522.0 nm after passing through the imaging optical lens 30 of the third embodiment. In Figure 12, the field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0217] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens is 2.300mm, the image height IH of the 1.0 field of view is 2.950mm, and the field of view FOV of the 1.0 field of view is 170.04°, so that the camera optical lens 30 meets the design requirements of large aperture, ultra-wide angle, and ultra-thinness. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0218] (Fourth Implementation)

[0219] The symbols in the fourth embodiment have the same meanings as those in the first embodiment.

[0220] Figure 13 shows the camera optical lens 40 of the fourth embodiment of the present invention.

[0221] Tables 7 and 8 show the design data of the camera optical lens 40 according to the fourth embodiment of the present invention.

[0222] Table 7

[0223] Table 8 shows the aspherical data of each lens in the camera optical lens 40 of the fourth embodiment of the present invention.

[0224] Table 8

[0225] Figure 14 shows a magnification chromatic aberration diagram of light with wavelengths of 430.0 nm, 449.0 nm, 485.0 nm, 522.0 nm, 558.0 nm, 595.0 nm, 631.0 nm, and 660.0 nm after passing through the imaging optical lens 40 of the fourth embodiment. Figure 15 shows a schematic diagram of axial aberration of light with wavelengths of 430.0 nm, 449.0 nm, 485.0 nm, 522.0 nm, 558.0 nm, 595.0 nm, 631.0 nm, and 660.0 nm after passing through the imaging optical lens 10 of the fourth embodiment. Figure 16 shows a schematic diagram of field curvature and distortion of light with a wavelength of 522.0 nm after passing through the imaging optical lens 40 of the first embodiment. In Figure 16, the field curvature S is the sagittal field curvature, and T is the meridional field curvature.

[0226] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens is 2.301 mm, the image height IH of the 1.0 field of view is 2.960 mm, and the field of view FOV of the 1.0 field of view is 154.67°, which makes the camera optical lens 40 meet the design requirements of large aperture, ultra-wide angle, and ultra-thinness. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0227] (Fifth Implementation)

[0228] The symbols in the fifth embodiment have the same meanings as those in the first embodiment.

[0229] Figure 17 shows the camera optical lens 50 of the fifth embodiment of the present invention.

[0230] Tables 9 and 10 show the design data of the camera optical lens 50 according to the fifth embodiment of the present invention.

[0231] Table 9

[0232] Table 10 shows the aspherical data of each lens in the camera optical lens 50 of the fifth embodiment of the present invention.

[0233] Table 10

[0234] Figure 18 shows a magnification chromatic aberration diagram of light with wavelengths of 430.0 nm, 449.0 nm, 485.0 nm, 522.0 nm, 558.0 nm, 595.0 nm, 631.0 nm, and 660.0 nm after passing through the imaging optical lens 50 of the fifth embodiment. Figure 19 shows a schematic diagram of axial aberration of light with wavelengths of 430.0 nm, 449.0 nm, 485.0 nm, 522.0 nm, 558.0 nm, 595.0 nm, 631.0 nm, and 660.0 nm after passing through the imaging optical lens 50 of the fifth embodiment. Figure 20 shows a schematic diagram of field curvature and distortion of light with a wavelength of 522.0 nm after passing through the imaging optical lens 50 of the fifth embodiment. In Figure 20, the field curvature S is the sagittal field curvature, and T is the meridional field curvature.

[0235] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens is 2.299mm, the image height IH of the 1.0 field of view is 2.950mm, and the field of view FOV of the 1.0 field of view is 170.94°, which makes the camera optical lens 50 meet the design requirements of large aperture, ultra-wide angle, and ultra-thinness. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0236] (Sixth Implementation Method)

[0237] The symbols in the sixth embodiment have the same meanings as those in the first embodiment.

[0238] Figure 21 shows the camera optical lens 60 according to the sixth embodiment of the present invention.

[0239] The sixth lens L6 has positive refractive power.

[0240] Tables 11 and 12 show the design data of the camera optical lens 60 according to the sixth embodiment of the present invention.

[0241] Table 11

[0242] Table 12 shows the aspherical data of each lens in the camera optical lens 60 of the sixth embodiment of the present invention.

[0243] Table 12

[0244] Figure 22 shows a magnification chromatic aberration diagram of light with wavelengths of 430.0 nm, 449.0 nm, 485.0 nm, 522.0 nm, 558.0 nm, 595.0 nm, 631.0 nm, and 660.0 nm after passing through the imaging optical lens 60 of the sixth embodiment. Figure 23 shows a schematic diagram of axial aberration of light with wavelengths of 430.0 nm, 449.0 nm, 485.0 nm, 522.0 nm, 558.0 nm, 595.0 nm, 631.0 nm, and 660.0 nm after passing through the imaging optical lens 60 of the sixth embodiment. Figure 24 shows a schematic diagram of field curvature and distortion of light with a wavelength of 522.0 nm after passing through the imaging optical lens 60 of the sixth embodiment. In Figure 24, the field curvature S is the sagittal field curvature, and T is the meridional field curvature.

[0245] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens is 2.301 mm, the image height IH of the 1.0 field of view is 2.915 mm, and the field of view FOV of the 1.0 field of view is 179.60°, which makes the camera optical lens 60 meet the design requirements of large aperture, ultra-wide angle, and ultra-thin design. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0246] (Seventh Implementation)

[0247] The symbols in the seventh embodiment have the same meanings as those in the first embodiment.

[0248] Figure 25 shows the camera optical lens 70 of the seventh embodiment of the present invention.

[0249] Tables 13 and 14 show the design data of the camera optical lens 70 according to the seventh embodiment of the present invention.

[0250] Table 13

[0251] Table 14 shows the aspherical data of each lens in the camera optical lens 70 of the seventh embodiment of the present invention.

[0252] Table 14

[0253] Figure 26 shows a magnification chromatic aberration diagram of light with wavelengths of 430.0 nm, 449.0 nm, 485.0 nm, 522.0 nm, 558.0 nm, 595.0 nm, 631.0 nm, and 660.0 nm after passing through the imaging optical lens 70 of the seventh embodiment. Figure 27 shows a schematic diagram of axial aberration of light with wavelengths of 430.0 nm, 449.0 nm, 485.0 nm, 522.0 nm, 558.0 nm, 595.0 nm, 631.0 nm, and 660.0 nm after passing through the imaging optical lens 70 of the seventh embodiment. Figure 28 shows a schematic diagram of field curvature and distortion of light with a wavelength of 522.0 nm after passing through the imaging optical lens 70 of the seventh embodiment. In Figure 28, the field curvature S is the sagittal field curvature, and T is the meridional field curvature.

[0254] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens is 2.299mm, the image height IH of the 1.0 field of view is 3.151mm, and the field of view FOV of the 1.0 field of view is 177.52°, which makes the camera optical lens 70 meet the design requirements of large aperture, ultra-wide angle, and ultra-thinness. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0255] (Comparative Implementation Methods)

[0256] The symbols in the comparative implementation method have the same meanings as those in the first implementation method.

[0257] Figure 29 shows the camera optical lens 80 of the comparative embodiment of the present invention.

[0258] Tables 15 and 16 show the design data of the camera optical lens 80 of the comparative embodiment of the present invention.

[0259] Table 15

[0260] Table 16 shows the aspherical data of each lens in the camera optical lens 80 of the comparative embodiment of the present invention.

[0261] Table 16

[0262] Figure 30 shows a magnification chromatic aberration diagram of light with wavelengths of 430.0 nm, 449.0 nm, 485.0 nm, 522.0 nm, 558.0 nm, 595.0 nm, 631.0 nm, and 660.0 nm after passing through the imaging optical lens 80 of the comparative embodiment. Figure 31 shows a schematic diagram of axial aberration of light with wavelengths of 430.0 nm, 449.0 nm, 485.0 nm, 522.0 nm, 558.0 nm, 595.0 nm, 631.0 nm, and 660.0 nm after passing through the imaging optical lens 10 of the comparative embodiment. Figure 32 shows a schematic diagram of field curvature and distortion of light with a wavelength of 522.0 nm after passing through the imaging optical lens 80 of the comparative embodiment. In Figure 32, the field curvature S is the sagittal field curvature, and T is the meridional field curvature.

[0263] Table 17 below lists the values ​​of each conditional expression in this embodiment according to the above conditional expressions. Obviously, the camera optical lens 80 of the comparative embodiment does not satisfy the above conditional expression 100.00≤(FOV*f) / IH≤120.00.

[0264] In the comparative embodiment, the entrance pupil diameter ENPD of the camera optical lens is 2.299mm, the image height IH of the 1.0 field of view is 3.082mm, and the field of view FOV of the 1.0 field of view is 163.47°. The camera optical lens 80 does not meet the design requirements of ultra-wide angle and ultra-thin design.

[0265] Table 17

[0266] 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 comprises seven lenses, which are arranged in the following order from the object side to the image side: a first lens with negative refractive power, a second lens with positive refractive power, a third lens with positive refractive power, a fourth lens with positive refractive power, a fifth lens with negative refractive power, a sixth lens with refractive power, and a seventh lens with positive refractive power. The focal length of the camera optical lens is f, the focal length of the seventh lens is f7, the field of view of the camera optical lens in the 1.0 field of view is FOV, the image height of the camera optical lens in the 1.0 field of view is IH, the central radius of curvature of the object side of the sixth lens is R11, and the central radius of curvature of the image side of the sixth lens is R12, satisfying the following relationship: 3.95≤f7 / f≤6.00; 100.00≤(FOV*f) / IH≤120.00; 3.50≤(R11+R12) / (R11-R12)≤70.

00.

2. The camera optical lens according to claim 1, characterized in that, The refractive index of the first lens is n1, and it satisfies the following relationship: 1.70≤n1≤2.

10.

3. The camera optical lens according to claim 1, characterized in that, The axial distance from the image side of the seventh lens to the image plane is BF, and the total optical length of the camera lens is TTL, satisfying the following relationship: 0.10≤BF / TTL≤0.

25.

4. The camera optical lens according to claim 1, characterized in that, The second lens has an on-axis thickness of d3, and the third lens has an on-axis thickness of d5, satisfying the following relationship: 1.40≤d3 / d5≤3.

00.

5. The camera optical lens according to claim 1, characterized in that, The object-side surface of the first lens is convex near the axis, and the image-side surface of the first lens is concave near the axis. The focal length of the first lens is f1, 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, and the axial thickness of the first lens is d1, and they satisfy the following relationship: -1.50≤f1 / f≤-1.10; 1.10≤(R1+R2) / (R1-R2)≤1.35; 0.03≤d1 / TTL≤0.

17.

6. The camera optical lens according to claim 1, characterized in that, The object-side surface of the second lens is concave near the axis, and the image-side surface of the second lens is convex near the axis. The focal length of the second lens is f2, 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, and the axial thickness of the second lens is d3, and they satisfy the following relationship: 5.60≤f² / f≤7.80; 0.99≤(R3+R4) / (R3-R4)≤1.33; 0.15≤d3 / TTL≤0.

24.

7. The camera optical lens according to claim 1, characterized in that, The object-side surface of the third lens is convex near the axis, and the image-side surface of the third lens is convex near the axis. The third lens has a focal length of f3, a central radius of curvature of the object side of the third lens of R5, a central radius of curvature of the image side of the third lens of R6, and an axial thickness of d5, and satisfies the following relationship: 1.52≤f3 / f≤1.80; -0.21≤(R5+R6) / (R5-R6)≤-0.17; 0.06≤d5 / TTL≤0.

13.

8. The camera optical lens according to claim 1, characterized in that, The object-side surface of the fourth lens is convex near the axis, and the image-side surface of the fourth lens is convex near the axis. The fourth lens has a focal length of f4, a central radius of curvature of the object side of the fourth lens of R7, a central radius of curvature of the image side of the fourth lens of R8, and an axial thickness of d7, and satisfies the following relationship: 1.70≤f4 / f≤1.96; -0.85≤(R7+R8) / (R7-R8)≤-0.50; 0.04≤d7 / TTL≤0.

06.

9. The camera optical lens according to claim 1, characterized in that, The object-side surface of the fifth lens is concave near the axis, and the image-side surface of the fifth lens is concave near the axis. The fifth lens has a focal length of f5, a central radius of curvature of the object side of the fifth lens of R9, a central radius of curvature of the image side of the fifth lens of R10, and an axial thickness of d9, and satisfies the following relationship: -1.60≤f5 / f≤--1.40; 0.20≤(R9+R10) / (R9-R10)≤0.42; 0.02≤d9 / TTL≤0.

04.

10. The camera optical lens according to claim 1, characterized in that, The object side of the sixth lens is convex near the axis, and the image side of the sixth lens is concave near the axis. The sixth lens has a focal length of f6 and an on-axis thickness of d11, and satisfies the following relationship: -13.50≤f6 / f≤72.00; 0.02≤d11 / TTL≤0.

05.

11. The camera optical lens according to claim 1, characterized in that, The object side of the seventh lens is convex near the axis, and the image side of the seventh lens is concave near the axis. The seventh lens has a central radius of curvature of R13 on its object-side surface, a central radius of curvature of R14 on its image-side surface, and an axial thickness of d13, satisfying the following relationship: -3.80≤(R13+R14) / (R13-R14)≤-2.20; 0.02≤d13 / TTL≤0.

09.

12. The camera optical lens according to claim 1, characterized in that, The first lens, the third lens, and the seventh lens are all made of glass, while the second lens, the fourth lens, the fifth lens, and the sixth lens are all made of plastic.

13. The camera optical lens according to claim 1, characterized in that, The aperture value FNO of the camera optical lens is ≤2.30; the field of view (FOV) of the 1.0 field of view of the camera optical lens is ≥154.67°.

Images