Camera lens

Abstract

The application discloses a camera optical lens, which comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens from the object side to the image side; the refractive index of the first lens is nd1, the field of view of the camera optical lens is FOV, the focal length of the camera optical lens is f, the image height of the camera optical lens is IH, and the following conditions are met: nd1 >= 1.70; (FOV*f) / IH >= 120.00. The camera optical lens has good optical performance, can meet the design requirements of large aperture and miniaturization, and has good receiving effect.

Description

Technical Field

[0001] The present invention relates to the field of optical technology, and in particular to a camera optical lens. Background Technology

[0002] With the development of intelligent driving in automobiles, automotive cameras are also rapidly being updated and iterated. Automotive cameras are favored by developers of autonomous driving technology due to their clear imaging capabilities. However, automotive cameras are easily affected by environmental factors (such as strong light, rain, and snow), resulting in poor image quality. Therefore, supplementing the information received by automotive cameras with automotive LiDAR is of great significance. LiDAR uses lasers to detect targets, extracting the target's light wave signal from the reflected light, and processing it together with the emitted signal to obtain information such as the target's distance, speed, and orientation. For LiDAR, the camera optical lens is an indispensable part, as it collimates the LiDAR beam to improve detection performance.

[0003] However, the camera optics of existing LiDAR systems still cannot meet the design requirements of large aperture and miniaturization, resulting in poor reception and difficulty in meeting the application needs of intelligent driving. Summary of the Invention

[0004] The purpose of this invention is to provide a camera optical lens that has good optical performance, meets the design requirements of large aperture and miniaturization, and has good reception.

[0005] To solve the above-mentioned technical problems, the present invention provides a camera optical lens, which comprises, from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens; the refractive index of the first lens is nd1, the field of view of the camera optical lens is FOV, the focal length of the camera optical lens is f, the image height of the camera optical lens is IH, and satisfies the following condition:

[0006] nd1 ≥ 1.70;

[0007] (FOV*FNO) / IH≥120.00.

[0008] Optionally, the radius of curvature of the object-side surface of the third lens is R5, and the radius of curvature of the image-side surface of the third lens is R6, satisfying the following condition:

[0009] -5.00≤R5 / R6≤-1.20.

[0010] Optionally, the radius of curvature of the object-side surface of the fourth lens is R7, and the radius of curvature of the image-side surface of the fourth lens is R8, satisfying the following condition:

[0011] -4.00≤R7 / R8≤-1.00.

[0012] Optionally, the axial thickness of the fifth lens is d9, and the axial thickness of the sixth lens is d11, satisfying the following condition:

[0013] 1.40≤d9 / d11≤5.00.

[0014] Optionally, the combined focal length of the first lens and the second lens is f12, and the focal length of the imaging optical lens is f, satisfying the following condition:

[0015] -6.00≤f12 / f≤-1.20.

[0016] Optionally, the field of view (FOV) and focal length (f) of the camera optical lens also satisfy the following relationship:

[0017] (FOV*f) / IH≤150.00.

[0018] Optionally, the first lens has negative refractive power, and its image-side surface is concave near the axis; the object-side radius of curvature of the first lens is R1, the image-side radius of curvature of the first lens is R2, the focal length of the first lens is f1, the focal length of the imaging optical lens is f, the on-axis thickness of the first lens is d1, and the total optical length of the imaging optical lens is TTL, and satisfies the following relationship:

[0019] 0.33≤(R1+R2) / (R1-R2)≤1.97;

[0020] -3.54≤f1 / f≤-0.54;

[0021] 0.02≤d1 / TTL≤0.22.

[0022] Optionally, the second lens has positive refractive power, its object-side surface is concave at the paraxial position, and its image-side surface is convex at the paraxial position; the radius of curvature of the object-side surface of the second lens is R3, the radius of curvature of the image-side surface of the second lens is R4, the focal length of the second lens is f2, the focal length of the imaging optical lens is f, 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:

[0023] 0.54≤(R3+R4) / (R3-R4)≤1.71;

[0024] 1.66≤f² / f≤5.87;

[0025] 0.02≤d3 / TTL≤0.09.

[0026] Optionally, the third lens has negative refractive power, its object-side surface is concave at the paraxial position, and its image-side surface is concave at the paraxial position; the object-side radius of curvature of the third lens is R5, the image-side radius of curvature of the third lens is R6, the focal length of the third lens is f3, the focal length of the imaging optical lens is f, the on-axis thickness of the third lens is d5, and the total optical length of the imaging optical lens is TTL, and satisfies the following relationship:

[0027] 0.05≤(R5+R6) / (R5-R6)≤1.00;

[0028] -7.30≤f3 / f≤-1.56;

[0029] 0.02≤d5 / TTL≤0.12.

[0030] Optionally, the fourth lens has positive refractive power, its object-side surface is convex at the paraxial position, and its image-side surface is convex at the paraxial position; the radius of curvature of the object-side surface of the fourth lens is R7, the radius of curvature of the image-side surface of the fourth lens is R8, the focal length of the fourth lens is f4, the focal length of the camera optical lens is f, the on-axis thickness of the fourth lens is d7, and the total optical length of the camera optical lens is TTL, and satisfies the following relationship:

[0031] 0.00≤(R7+R8) / (R7-R8)≤0.09;

[0032] 0.61≤f4 / f≤2.69;

[0033] 0.03≤d7 / TTL≤0.27.

[0034] Optionally, the fifth lens has positive refractive power, its object-side surface is convex at the paraxial position, and its image-side surface is concave at the paraxial position; the object-side radius of curvature of the fifth lens is R9, the image-side radius of curvature of the fifth lens is R10, the focal length of the fifth lens is f5, the focal length of the imaging optical lens is f, the on-axis thickness of the fifth lens is d9, and the total optical length of the imaging optical lens is TTL, and satisfies the following relationship:

[0035] -17.54≤(R9+R10) / (R9-R10)≤-1.95;

[0036] 4.38≤f5 / f≤45.60;

[0037] 0.06≤d9 / TTL≤0.36.

[0038] Optionally, the sixth lens has positive refractive power, its object-side surface is convex near the axis, and its image-side surface is concave near the axis; the radius of curvature of the object-side surface of the sixth lens is R11, the radius of curvature of the image-side surface of the sixth lens is R12, the focal length of the sixth lens is f6, the on-axis thickness of the sixth lens is d11, and the total optical length of the imaging optical lens is TTL, and satisfies the following relationship:

[0039] -5.98≤(R11+R12) / (R11-R12)≤-1.50;

[0040] 0.92≤f6 / f≤4.36;

[0041] 0.02≤d11 / TTL≤0.14.

[0042] Optionally, the fourth lens is made of glass.

[0043] The beneficial effects of the present invention are as follows: through the above-described lens configuration, the camera optical lens of the present invention has good optical performance, large aperture and miniaturization characteristics, and good receiving effect. Attached Figure Description

[0044] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0045] Figure 1 This is a schematic diagram of the structure of the camera optical lens according to the first embodiment of the present invention;

[0046] Figure 2 yes Figure 1 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0047] Figure 3 yes Figure 1 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0048] Figure 4 yes Figure 1 A schematic diagram of axial aberrations of the camera optical lens shown;

[0049] Figure 5 This is a schematic diagram of the structure of the camera optical lens according to the second embodiment of the present invention;

[0050] Figure 6 yes Figure 5 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0051] Figure 7 yes Figure 5 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0052] Figure 8 yes Figure 5 A schematic diagram of axial aberrations of the camera optical lens shown;

[0053] Figure 9 This is a schematic diagram of the structure of the camera optical lens according to the third embodiment of the present invention;

[0054] Figure 10 yes Figure 9 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0055] Figure 11 yes Figure 9 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0056] Figure 12 yes Figure 9 A schematic diagram of axial aberrations of the camera optical lens shown;

[0057] Figure 13 This is a schematic diagram of the structure of the camera optical lens according to the fourth embodiment of the present invention;

[0058] Figure 14 yes Figure 13 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0059] Figure 15 yes Figure 13 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0060] Figure 16 yes Figure 13 A schematic diagram of axial aberrations of the camera optical lens shown;

[0061] Figure 17 This is a schematic diagram of the structure of the camera optical lens according to the fifth embodiment of the present invention;

[0062] Figure 18 yes Figure 17 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0063] Figure 19 yes Figure 17 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0064] Figure 20 yes Figure 17 A schematic diagram of axial aberrations of the camera optical lens shown;

[0065] Figure 21 This is a schematic diagram of the structure of the camera optical lens according to a comparative embodiment of the present invention;

[0066] Figure 22 yes Figure 21 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0067] Figure 23 yes Figure 21 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0068] Figure 24 yes Figure 21 A schematic diagram of axial aberrations of the camera optical lens is shown. Detailed Implementation

[0069] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the various embodiments of the present 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 presented in the various embodiments of the present invention to enable the reader to better understand this application. However, the technical solutions claimed in this application can be implemented even without these technical details and various changes and modifications based on the following embodiments.

[0070] In embodiments of the present invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0071] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0072] Furthermore, the terms "installation," "setting," "equipped with," "opening," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention according to the specific circumstances.

[0073] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0074] Please see Figure 1 , 5 According to points 9, 13, and 17, the present invention provides a camera optical lens 10, 20, 30, 40, and 50, which, from the object side to the image side, sequentially comprises: a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6. The first lens L1 has a refractive index of nd1, the field of view of the camera optical lens 10, 20, 30, 40, and 50 is FOV, the focal length of the camera optical lens 10, 20, 30, 40, and 50 is f, and the image height of the camera optical lens 10, 20, 30, 40, and 50 is IH, and satisfies the following condition:

[0075] nd1≥1.70 (1)

[0076] (FOV*f) / IH≥120.00 (2)

[0077] Among them, condition (1) specifies that the refractive index nd1 of the first lens L1 is not less than 1.70. That is to say, the material of the first lens L1 is preferably a high refractive index optical material, which is beneficial to control the object-side aperture of the camera optical lens 10 and improve the imaging quality.

[0078] Within the range specified in condition (2), the camera optical lenses 10, 20, 30, 40, and 50 can simultaneously achieve a large field of view and a long focal length, enabling the camera optical lenses 10, 20, 30, 40, and 50 to perform medium- and long-distance imaging.

[0079] In this invention, by setting multiple lenses (L1, L2, L3, L4, L5, L6), and setting the refractive index nd1 of the first lens L1 and the imaging optical lenses 10, 20, 30, 40, 50 to the range specified by the above-mentioned conditional expressions (1) and (2), the imaging optical lenses 10, 20, 30, 40, 50 have good optical performance, large aperture and miniaturization characteristics, and good receiving effect.

[0080] Preferably, the refractive index nd1 of the first lens L1 also satisfies the following condition:

[0081] nd1≤2.20 (3)

[0082] Preferably, the camera optical lenses 10, 20, 30, 40, and 50 also satisfy the following condition:

[0083] (FOV*f) / IH≤150.00 (4)

[0084] Preferably, the combined focal length of the first lens L1 and the second lens L2 is f12, and the focal lengths of the imaging optical lenses 10, 20, 30, 40, and 50 are f, satisfying the following condition:

[0085] -6.00≤f12 / f≤-1.20 (5)

[0086] Condition (4) specifies the ratio of the combined focal length f12 of the first lens L1 and the second lens L2 to the focal length f of the imaging optical lens 10. Within the range specified by condition (4), the field curvature of the imaging optical lenses 10, 20, 30, 40, and 50 can be effectively balanced, so that the field curvature shift of the central field of view is less than 0.04 mm, and the imaging optical lenses 10, 20, 30, 40, and 50 have good imaging accuracy.

[0087] Preferably, the radius of curvature of the object-side surface of the third lens L3 is R5, and the radius of curvature of the image-side surface of the third lens L3 is R6, satisfying the following condition:

[0088] -5.00≤R5 / R6≤-1.20 (6)

[0089] Condition (6) specifies the shape of the third lens L3, such that the ratio of the object side curvature radius R5 to the image side curvature radius R6 of the third lens L3 satisfies the range specified by condition (6), which can mitigate the deflection of light passing through the third lens L3, effectively correct chromatic aberration, and make the chromatic aberration |LC|≤3.5 micrometers.

[0090] Preferably, the radius of curvature of the object-side surface of the fourth lens L4 is R7, and the radius of curvature of the image-side surface of the fourth lens L4 is R8, satisfying the following condition:

[0091] -4.00≤R7 / R8≤-1.00 (7)

[0092] Condition (7) specifies the shape of the fourth lens L4, such that the ratio of the object side curvature radius R7 to the image side curvature radius R8 of the fourth lens L4 satisfies the range specified by condition (7), which helps to mitigate the degree of light deflection after passing through the fourth lens L4, so that the camera optical lenses 10, 20, 30, 40, and 50 have better imaging quality and lower sensitivity.

[0093] Preferably, the axial thickness of the fifth lens L5 is d9, and the axial thickness of the sixth lens L6 is d11, satisfying the following condition:

[0094] 1.40≤d9 / d11≤5.00 (8)

[0095] Condition (8) specifies the ratio of the on-axis thickness d9 of the fifth lens L5 to the on-axis thickness d11 of the sixth lens L6. Within the range specified by condition (8), it helps to control the lens thickness of the fifth lens L5 and the sixth lens L6, which is beneficial to the injection molding of the fifth lens L5 and the sixth lens L6 and reduces the manufacturing difficulty of the camera optical lenses 10, 20, 30, 40 and 50.

[0096] In this invention, the object-side surface of the first lens L1 is convex near the axis, and its image-side surface is concave near the axis, thus the first lens L1 has negative refractive power. In other optional embodiments, the first lens L1 may also have positive refractive power, and the object-side and image-side surfaces of the first lens L1 may also be configured with other concave and convex distributions.

[0097] Preferably, the object-side radius of curvature of the first lens L1 is R1, the image-side radius of curvature of the first lens L1 is R2, the focal length of the first lens L1 is f1, the focal length of the imaging optical lenses 10, 20, 30, 40, and 50 is f, the axial thickness of the first lens L1 is d1, and the total optical length of the imaging optical lenses 10, 20, 30, 40, and 50 is TTL, and satisfies the following relationship:

[0098] 0.33≤(R1+R2) / (R1-R2)≤1.97 (9)

[0099] -3.54≤f1 / f≤-0.54 (10)

[0100] 0.02≤d1 / TTL≤0.22 (11)

[0101] Condition (9) specifies the shape of the first lens L1. Within this range, the degree of refraction of light passing through the first lens L1 can be mitigated, effectively reducing aberrations. More preferably, 0.53 ≤ (R1 + R2) / (R1 - R2) ≤ 1.57. Condition (10) specifies the ratio of the focal length f1 of the first lens to the focal length f of the imaging optical lenses 10, 20, 30, 40, and 50. Within the range defined by the condition, it helps to improve the optical performance of the imaging optical lenses 10, 20, 30, 40, and 50. More preferably, -2.21 ≤ f1 / f ≤ -0.68. Condition (11) specifies the ratio of the on-axis thickness d1 of the first lens L1 to the thickness of the total optical length TTL of the camera optical lenses 10, 20, 30, 40, and 50. Within the above range, it helps to achieve the ultra-thin design of the camera optical lenses 10, 20, 30, 40, and 50. More preferably, 0.03≤d1 / TTL≤0.17.

[0102] In this invention, the object-side surface of the second lens L2 is concave near the axis, and its image-side surface is convex near the axis, thus the second lens L2 has positive 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, and the second lens L2 may also have negative refractive power.

[0103] Preferably, the object-side radius of curvature of the second lens L2 is R3, the image-side radius of curvature of the second lens L2 is R4, the focal length of the second lens L2 is f2, the focal length of the imaging optical lenses 10, 20, 30, 40, and 50 is f, the on-axis thickness of the second lens L2 is d3, and the total optical length of the imaging optical lenses 10, 20, 30, 40, and 50 is TTL, and satisfies the following relationship:

[0104] 0.54≤(R3+R4) / (R3-R4)≤1.71 (12)

[0105] 1.66≤f² / f≤5.87 (13)

[0106] 0.02≤d3 / TTL≤0.09 (14)

[0107] Condition (12) specifies the shape of the second lens L2. Within the range defined by the condition, the degree of refraction of light after passing through the second lens L2 can be mitigated, effectively reducing aberrations. Preferably, 0.87 ≤ (R3 + R4) / (R3 - R4) ≤ 1.37. Condition (13) specifies the ratio of the focal length f2 of the second lens L2 to the focal length f of the imaging optical lenses 10, 20, 30, 40, and 50. Within this range, it helps to improve the optical performance of the imaging optical lenses 10, 20, 30, 40, and 50. More preferably, 2.65 ≤ f2 / f ≤ 4.70. Condition (14) specifies the ratio of the on-axis thickness d3 of the second lens L2 to the total optical length TTL of the camera optical lens 10. Within the range defined by the condition, it helps to compress the total optical length TTL of the camera optical lenses 10, 20, 30, 40, and 50, and realize the ultra-thin design of the camera optical lenses 10, 20, 30, 40, and 50. More preferably, 0.03≤d3 / TTL≤0.07.

[0108] In this invention, the object-side surface of the third lens L3 is concave near the axis, and its image-side surface is also concave near the axis, thus the third lens L3 has negative refractive power. In other optional embodiments, the object-side and image-side surfaces of the third lens L3 can also be configured with other concave and convex distributions, and the third lens L3 can also have positive refractive power.

[0109] Preferably, the object-side radius of curvature of the third lens L3 is R5, the image-side radius of curvature of the third lens L3 is R6, the focal length of the third lens L3 is f3, the focal lengths of the imaging optical lenses 10, 20, 30, 40, and 50 are f, the on-axis thickness of the third lens L3 is d5, and the total optical length of the imaging optical lens 10 is TTL, and satisfies the following relationship:

[0110] 0.05≤(R5+R6) / (R5-R6)≤1.00 (15)

[0111] -7.30≤f3 / f≤-1.56 (16)

[0112] 0.02≤d5 / TTL≤0.12 (17)

[0113] Condition (15) specifies the shape of the third lens L3, which can mitigate the deflection of light passing through the third lens L3 and effectively correct chromatic aberration, making the chromatic aberration |LC| ≤ 3.5 micrometers. More preferably, 0.07 ≤ (R5 + R6) / (R5 - R6) ≤ 0.80. Condition (16) specifies the ratio of the focal length f3 of the third lens L3 to the focal length f of the imaging optical lenses 10, 20, 30, 40, and 50. Within this range, it is beneficial to reduce the aberrations of the imaging optical lenses 10, 20, 30, 40, and 50, and at the same time, it is beneficial to realize the ultra-thin and wide-angle design of the imaging optical lenses 10, 20, 30, 40, and 50. More preferably, -4.56 ≤ f3 / f ≤ -1.95. Condition (17) specifies the ratio of the on-axis thickness d5 of the third lens L3 to the total optical length TTL of the camera optical lens 10. Within the range defined by the condition, it is beneficial to reasonably control the total optical length TTL of the camera optical lenses 10, 20, 30, 40, and 50, and realize the ultra-thin design of the camera optical lenses 10, 20, 30, 40, and 50. More preferably, 0.03≤d5 / TTL≤0.09.

[0114] In this invention, the object-side surface of the fourth lens L4 is convex near the axis, and its image-side surface is also convex near the axis. The fourth lens L4 has positive refractive power. In other optional embodiments, the object-side and image-side surfaces of the fourth lens L4 can also be configured with other concave and convex distributions, and the fourth lens L4 can also have negative refractive power.

[0115] Preferably, the object-side radius of curvature of the fourth lens L4 is R7, the image-side radius of curvature of the fourth lens L4 is R8, the focal length of the fourth lens L4 is f4, the focal length of the imaging optical lenses 10, 20, 30, 40, and 50 is f, 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, and 50 is TTL, and satisfies the following relationship:

[0116] 0.00≤(R7+R8) / (R7-R8)≤0.90 (18)

[0117] 0.61≤f4 / f≤2.69 (19)

[0118] 0.03≤d7 / TTL≤0.27 (20)

[0119] Condition (18) specifies the shape of the fourth lens L4. Within the above range, it is beneficial to mitigate the deflection of light passing through the fourth lens L4, so that the imaging optical lenses 10, 20, 30, 40, and 50 have better imaging quality and lower sensitivity. More preferably, 0.00 ≤ (R7 + R8) / (R7 - R8) ≤ 0.72. Condition (19) specifies the ratio of the focal length f4 of the fourth lens L4 to the focal length f of the imaging optical lenses 10, 20, 30, 40, and 50, reasonably allocating the internal focal lengths of the imaging optical lenses 10, 20, 30, 40, and 50, so that the imaging optical lenses 10, 20, 30, 40, and 50 have better imaging quality and lower sensitivity. More preferably, 0.98 ≤ f4 / f ≤ 2.15. Condition (20) specifies the ratio of the on-axis thickness d7 of the fourth lens L4 to the total optical length TTL of the camera optical lens 10. Within this range, the total optical length TTL of the camera optical lens 10 can be effectively compressed, thereby achieving the ultra-thin design of the camera optical lenses 10, 20, 30, 40, and 50. More preferably, 0.05 ≤ d7 / TTL ≤ 0.21.

[0120] In this invention, the object-side surface of the fifth lens L5 is convex near the axis, and its image-side surface is concave near the axis, thus 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, and the fifth lens L5 may also have negative refractive power.

[0121] Preferably, the object-side radius of curvature of the fifth lens L5 is R9, the image-side radius of curvature of the fifth lens L5 is R10, the focal length of the fifth lens L5 is f5, the focal lengths of the imaging optical lenses 1, 20, 30, 40, and 500 are f, the on-axis thickness of the fifth lens L5 is d9, and the total optical length of the imaging optical lens is TTL, and satisfies the following relationship:

[0122] -17.54≤(R9+R10) / (R9-R10)≤-1.95 (21)

[0123] 4.38≤f5 / f≤45.60 (22)

[0124] 0.06≤d9 / TTL≤0.36 (23)

[0125] Condition (21) specifies the shape of the fifth lens L5, which, within the aforementioned limits, helps to improve the optical performance of the imaging optical lenses 10, 20, 30, 40, and 50. More preferably, -10.96 ≤ (R9 + R10) / (R9 - R10) ≤ -2.44. Condition (22) specifies the ratio of the focal length f5 of the fifth lens L5 to the focal length f of the imaging optical lenses 10, 20, 30, 40, and 50. Within the limits defined by the condition, this helps to improve the optical performance of the imaging optical lenses 10, 20, 30, 40, and 50. More preferably, 7.01 ≤ f5 / f ≤ 36.48. Condition (23) specifies the on-axis thickness d9 of the fifth lens L5 and the total optical length TTL of the camera optical lenses 10, 20, 30, 40, and 50, which is beneficial to realize the ultra-thin design of the camera optical lenses 10, 20, 30, 40, and 50. More preferably, 0.10≤d9 / TTL≤0.29.

[0126] In this invention, the object-side surface of the sixth lens L6 is convex near the axis, and its image-side surface is concave near the axis, thus the sixth lens L6 has positive refractive power. In other optional embodiments, the object-side and image-side surfaces of the sixth lens L6 can also be configured with other concave and convex distributions, and the sixth lens L6 can also have negative refractive power.

[0127] Preferably, the object-side radius of curvature of the sixth lens L6 is R11, the image-side radius of curvature of the sixth lens L6 is R12, the focal length of the sixth lens L6 is f6, the focal lengths of the imaging optical lenses 10, 20, 30, 40, and 50 are f, the axial thickness of the sixth lens L6 is d11, and the total optical length of the imaging optical lenses 10, 20, 30, 40, and 50 is TTL, and satisfies the following relationship:

[0128] -5.98≤(R11+R12) / (R11-R12)≤-1.50 (24)

[0129] 0.92≤f6 / f≤4.36 (25)

[0130] 0.02≤d11 / TTL≤0.14 (26)

[0131] Condition (24) specifies the shape of the sixth lens L6. Within the above range, it helps to correct the off-axis aberration of the imaging optical lenses 10, 20, 30, 40, and 50 during the ultra-thin wide-angle design process. More preferably, -3.74 ≤ (R11 + R12) / (R11 - R12) ≤ -1.87. Condition (25) specifies the range of the ratio of the focal length f6 of the sixth lens L6 to the focal length f of the imaging optical lenses 10, 20, 30, 40, and 50. Within this range, the internal focal lengths of the imaging optical lenses 10, 20, 30, 40, and 50 are reasonably allocated, so that the imaging optical lenses 10, 20, 30, 40, and 50 have better imaging quality and lower sensitivity. More preferably, 1.48 ≤ f6 / f ≤ 3.49. Condition (26) defines the range of the ratio between the on-axis thickness d11 of the sixth lens L6 and the total optical length TTL of the camera optical lenses 10, 20, 30, 40, and 50, which helps to achieve the ultra-thin design of the camera optical lenses 10, 20, 30, 40, and 50. More preferably, 0.03≤d11 / TTL≤0.11.

[0132] Preferably, the F-number of the camera optical lenses 10, 20, 30, 40, and 50 is FNO, and also satisfies the following condition:

[0133] FNO≤1.30 (27)

[0134] Condition (27) specifies the F-number of the aperture of the camera optical lenses 10, 20, 30, 40, and 50. Within the range defined by condition (27), while miniaturizing the design of the camera optical lenses 10, 20, 30, 40, and 50, a larger amount of light can be obtained, thereby improving the range of the camera optical lenses 10, 20, 30, 40, and 50, improving the resistance to ambient light of the camera optical lenses 10, and ensuring that the camera optical lenses 10, 20, 30, 40, and 50 have good receiving effect.

[0135] In this invention, the first lens L1 is made of glass, the second lens L2 is made of plastic, the third lens L3 is made of plastic, the fourth lens L4 is made of glass, the fifth lens L5 is made of plastic, and the sixth lens L6 is made of plastic. In other optional embodiments, the lenses may be made of other materials.

[0136] In this invention, an optical element such as an optical filter GF is disposed between the sixth lens L6 and the imaging surface Si. The optical filter GF can be a glass cover plate or an optical filter, such as... Figure 1As shown, a first optical filter GF1 and a second optical filter GF2 are disposed between the sixth lens L6 and the imaging surface Si. In other embodiments, the optical filter GF can also be disposed in other positions.

[0137] The camera optical lenses 10, 20, 30, 40, and 50 of the present invention have excellent optical performance, large aperture, and miniaturization characteristics, and also have good receiving effect. Based on the optical characteristics of these camera optical lenses 10, 20, 30, 40, and 50, they are particularly suitable for detection devices or equipment such as vehicle-mounted lidar.

[0138] The following examples illustrate the camera optical lenses 10, 20, 30, 40, and 50 of the present invention. The symbols described in each example are shown in Table [1]. The units for focal length, on-axis distance, radius of curvature, on-axis thickness, inversion point position, and stationary point position are millimeters.

[0139] TTL: Total optical length (the axial distance from the object side of the first lens L1 to the imaging plane Si), in millimeters.

[0140] Preferably, the object side and / or image side of the lens may also be provided with inflection points and / or stagnation points to meet the requirements of high-quality imaging. For specific implementation schemes, please refer to the following content.

[0141] Figure 1 This is a schematic diagram of the camera optical lens 10 in the first embodiment. The following shows the design data of the camera optical lens 10 in the first embodiment of the present invention.

[0142] Table 1 lists the radius of curvature R, axial thickness, axial distance d between the lenses, refractive index nd, and Abbe number vd of the object-side and image-side surfaces of the first lens L1 to the sixth lens L6 constituting the imaging optical lens 10 in the first embodiment of the present invention. Table 2 shows the conic coefficient k and aspherical coefficient of the imaging optical lens 10. It should be noted that in this embodiment, the units of distance, radius, and thickness are all millimeters (mm).

[0143] Table 1

[0144]

[0145]

[0146] The meanings of the symbols in the table above are as follows.

[0147] R: Radius of curvature of the optical surface; for lenses, it is the central radius of curvature.

[0148] S1: Aperture;

[0149] R1: The radius of curvature of the object-side surface of the first lens L1;

[0150] R2: The radius of curvature of the image-side surface of the first lens L1;

[0151] R3: The radius of curvature of the object-side surface of the second lens L2;

[0152] R4: Radius of curvature of the image-side surface of the second lens L2;

[0153] R5: The radius of curvature of the object-side surface of the third lens L3;

[0154] R6: Radius of curvature of the image-side surface of the third lens L3;

[0155] R7: The radius of curvature of the object-side surface of the fourth lens L4;

[0156] R8: Radius of curvature of the image-side surface of the fourth lens L4;

[0157] R9: The radius of curvature of the object-side surface of the fifth lens L5;

[0158] R10: Radius of curvature of the image-side surface of the fifth lens L5;

[0159] R11: The radius of curvature of the object-side surface of the sixth lens L6;

[0160] R12: Radius of curvature of the image-side surface of the sixth lens L6;

[0161] R15: Radius of curvature of the object-side surface of the first optical filter GF1;

[0162] R16: Radius of curvature of the image-side surface of the first optical filter GF1;

[0163] R17: Radius of curvature of the object-side surface of the second optical filter GF2;

[0164] R18: Radius of curvature of the image-side surface of the second optical filter GF2;

[0165] d: The axial thickness of the lens or the axial distance between adjacent lenses;

[0166] d0: The on-axis distance from aperture S1 to the object-side surface of the first lens L1;

[0167] d1: On-axis thickness of the first lens L1;

[0168] d2: On-axis distance from the image-side surface of the first lens L1 to the object-side surface of the second lens L2; ​​d3: On-axis thickness of the second lens L2;

[0169] d4: On-axis distance from the image-side surface of the second lens L2 to the object-side surface of the third lens L3; d5: On-axis thickness of the third lens L3;

[0170] d6: On-axis distance from the image side of the third lens L3 to the object side of the fourth lens L4; d7: On-axis thickness of the fourth lens L4;

[0171] 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;

[0172] d9: On-axis thickness of the fifth lens L5;

[0173] d10: The axial distance from the image-side surface of the fifth lens L5 to the object-side surface of the sixth lens L6;

[0174] d11: On-axis thickness of the sixth lens L6;

[0175] d12: The on-axis distance from the image-side surface of the sixth lens L6 to the object-side surface of the first optical filter GF1;

[0176] d13: On-axis thickness of the first optical filter GF1;

[0177] d14: On-axis distance from the image side of the first optical filter GF1 to the object side of the second optical filter GF2; d15: On-axis thickness of the second optical filter GF2;

[0178] d16: The axial distance from the image-side surface of the second optical filter GF2 to the image plane Si;

[0179] nd: Refractive index of the d-line (the d-line represents green light with a wavelength of 550 nm);

[0180] nd1: Refractive index of the first lens L1;

[0181] nd2: Refractive index of the second lens L2;

[0182] nd3: Refractive index of the third lens L3;

[0183] nd4: Refractive index of the fourth lens L4;

[0184] nd5: The refractive index of the fifth lens L5;

[0185] nd6: Refractive index of the sixth lens L6;

[0186] ndg1: The refractive index of the first optical filter GF1;

[0187] ndg2: The refractive index of the second optical filter GF2;

[0188] vd: Abbe number;

[0189] vd1: Abbe number of the first lens L1;

[0190] vd2: Abbe number of the second lens L2;

[0191] vd3: Abbe number of the third lens L3;

[0192] vd4: Abbe number of the fourth lens L4;

[0193] vd5: Abbe number of the fifth lens L5;

[0194] vd6: Abbe number of the sixth lens L6;

[0195] vg1: Abbe number of the first optical filter GF1;

[0196] vg2: Abbe number of the second optical filter GF2.

[0197] Table 2

[0198]

[0199]

[0200] It should be noted that the aspherical surface of each lens in this embodiment uses the aspherical surface shown in the following conditional expression (28). However, the specific form of the following conditional expression (28) is only an example. In fact, the present invention is not limited to the aspherical polynomial form represented in conditional expression (28).

[0201] y = (c 2 / r) / [1+{1-(k+1)(c 2 / r 2 )} 1 / 2 ]+A4r 4 +A6r 6 +A8r 8 +A10r 10 +A12r 12 +A14r 14 +A16r 16 +

[0202] A18r 18 +A20r 20 (28)

[0203] Where k is the conic coefficient, and A4, A6, A8, A10, A12, A14, A16, A18, and A20 are aspherical coefficients. c is the curvature at the center of the optical surface, r is the perpendicular distance between a point on the aspherical curve and the optical axis, and z is the aspherical depth (the perpendicular distance between a point r on the aspherical surface at a distance r from the optical axis and a tangent plane at the vertex of the aspherical optical axis).

[0204] Tables 3 and 4 show the inversion point and stagnation point design data of each lens in the imaging optical lens 10 according to the embodiments 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; and P6R1 and P6R2 represent the object-side and image-side surfaces of the sixth lens L6, respectively. The data in the "Inversion Point Position" column corresponds to the vertical distance from the inversion point set on the surface of each lens to the optical axis of the imaging optical lens 10. The data in the "Stagnation Point Position" column corresponds to the vertical distance from the stagnation point set on the surface of each lens to the optical axis of the imaging optical lens 10.

[0205] Table 3

[0206] Number of recurve points Recurve point location 1 Recurve point position 2 P1R1 / / / P1R2 / / / P2R1 2 0.225 2.555 P2R2 1 0.775 / P3R1 / / / P3R2 1 1.885 / P4R1 / / / P4R2 / / / P5R1 1 1.625 / P5R2 1 0.355 / P6R1 1 1.115 / P6R2 1 1.315 /

[0207] Table 4

[0208] Number of outposts Location of the outpost P1R1 / / P1R2 / / P2R1 1 0.375 P2R2 1 1.385 P3R1 / / P3R2 / / P4R1 / / P4R2 / / P5R1 1 2.385 P5R2 1 0.625 P6R1 1 2.055 P6R2 1 2.165

[0209] In addition, Table 25 below lists the values ​​of various parameters in the first embodiment and the parameters specified in the conditional expressions.

[0210] Figure 2 A schematic diagram showing the field curvature and distortion of light with a wavelength of 850 nanometers after passing through the camera optical lens 10 of the first embodiment is shown; Figure 3 A schematic diagram of magnification chromatic aberration after passing through the camera optical lens 10 of the first embodiment at wavelengths of 830 nm, 850 nm, and 870 nm is shown. Figure 4 A schematic diagram of axial aberrations after passing through the camera optical lens 10 of the first embodiment at wavelengths of 830 nm, 850 nm, and 870 nm is shown.

[0211] As shown in Table 25, the first embodiment satisfies all the conditional expressions.

[0212] In this embodiment, the entrance pupil diameter of the camera optical lens 10 is 2.237 mm, the full field of view image height is 3.300 mm, and the diagonal field of view is 148.20°. The camera optical lens 10 meets the characteristics of large aperture and miniaturization, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0213] Second implementation method:

[0214] Figure 5This is a schematic diagram of the camera optical lens 20 in the second embodiment. The second embodiment is basically the same as the first embodiment, and the symbols have the same meanings as in the first embodiment. Only the differences are listed below.

[0215] Tables 5 and 6 show the design data of the camera optical lens 20 according to the second embodiment of the present invention.

[0216] Table 5

[0217]

[0218] Table 6

[0219]

[0220]

[0221] 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.

[0222] Table 7

[0223]

[0224]

[0225] Table 8

[0226] Number of outposts Location of the outpost P1R1 / / P1R2 / / P2R1 1 0.475 P2R2 1 1.425 P3R1 / / P3R2 1 1.845 P4R1 / / P4R2 / / P5R1 1 2.175 P5R2 1 0.665 P6R1 1 1.865 P6R2 1 2.695

[0227] In addition, Table 25 below lists the values ​​of various parameters in the second embodiment and the parameters specified in the conditional expressions.

[0228] Figure 6 A schematic diagram showing the field curvature and distortion of light with a wavelength of 850 nanometers after passing through the camera optical lens 20 of the second embodiment is shown; Figure 7 A schematic diagram of magnification chromatic aberration after passing through the camera optical lens 20 of the second embodiment at wavelengths of 830 nm, 850 nm, and 870 nm is shown. Figure 8 A schematic diagram of axial aberrations after passing through the camera optical lens 20 of the second embodiment at wavelengths of 830 nm, 850 nm, and 870 nm is shown.

[0229] As shown in Table 25, the second embodiment satisfies all the conditional expressions.

[0230] In this embodiment, the entrance pupil diameter of the camera optical lens 20 is 2.112 mm, the full field of view image height is 3.300 mm, and the diagonal field of view is 156.40°. The camera optical lens 20 meets the characteristics of large aperture and miniaturization, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0231] Third implementation method:

[0232] Figure 9 This is a schematic diagram of the camera optical lens 30 in the third embodiment. The third embodiment is basically the same as the first embodiment, and the symbols have the same meanings as in the first embodiment. Only the differences are listed below.

[0233] The object-side surface of the first lens L1 is concave near the axis.

[0234] Tables 9 and 10 show the design data of the camera optical lens 30 according to the third embodiment of the present invention.

[0235] Table 9

[0236]

[0237]

[0238] Table 10

[0239]

[0240]

[0241] 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.

[0242] Table 11

[0243] Number of recurve points Recurve point location 1 Recurve point position 2 P1R1 / / / P1R2 / / / P2R1 1 0.245 / P2R2 1 0.715 / P3R1 1 1.985 / P3R2 2 1.475 2.455 P4R1 / / / P4R2 / / / P5R1 1 1.985 / P5R2 2 0.335 3.605 P6R1 2 1.155 2.905 P6R2 2 1.285 2.845

[0244] Table 12

[0245] Number of outposts Location 1 Station location 2 P1R1 / / / P1R2 / / / P2R1 1 0.405 / P2R2 1 1.275 / P3R1 1 2.255 / P3R2 / / / P4R1 / / / P4R2 / / / P5R1 1 2.685 / P5R2 1 0.585 / P6R1 2 2.135 3.235 P6R2 2 2.155 3.165

[0246] In addition, Table 25 below lists the values ​​of various parameters in the third embodiment and the parameters specified in the conditional expressions.

[0247] Figure 10 A schematic diagram of field curvature and distortion of light with a wavelength of 850 nanometers after passing through the camera optical lens 30 of the third embodiment is shown; Figure 11 A schematic diagram of magnification chromatic aberration after passing through the camera optical lens 30 of the third embodiment at wavelengths of 830 nm, 850 nm, and 870 nm is shown. Figure 12 A schematic diagram of axial aberrations after passing through the camera optical lens 30 of the third embodiment at wavelengths of 830 nm, 850 nm, and 870 nm is shown.

[0248] As shown in Table 25, the third embodiment satisfies all the conditional expressions.

[0249] In this embodiment, the entrance pupil diameter of the camera optical lens 30 is 2.750 mm, the full field of view image height is 3.300 mm, and the diagonal field of view is 115.88°. The camera optical lens 30 meets the characteristics of large aperture and miniaturization, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0250] Fourth implementation method:

[0251] Figure 13 This is a schematic diagram of the camera optical lens 40 in the fourth embodiment. The fourth embodiment is basically the same as the first embodiment, and the symbols have the same meanings as in the first embodiment. Only the differences are listed below.

[0252] Tables 13 and 14 show the design data of the camera optical lens 40 according to the fourth embodiment of the present invention.

[0253] Table 13

[0254]

[0255] Table 14

[0256]

[0257] 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.

[0258] Table 15

[0259]

[0260]

[0261] Table 16

[0262] Number of outposts Location 1 P1R1 / / P1R2 / / P2R1 1 0.535 P2R2 1 1.515 P3R1 / / P3R2 / / P4R1 / / P4R2 / / P5R1 1 2.425 P5R2 1 0.645 P6R1 1 2.035 P6R2 1 2.135

[0263] In addition, Table 25 below lists the values ​​of various parameters and the parameters specified in the conditional expressions in the fourth embodiment.

[0264] Figure 14 A schematic diagram of field curvature and distortion of light with a wavelength of 850 nanometers after passing through the camera optical lens 40 of the fourth embodiment is shown. Figure 15 A schematic diagram of magnification chromatic aberration after passing through the camera optical lens 40 of the fourth embodiment at wavelengths of 830 nm, 850 nm, and 870 nm is shown. Figure 16 A schematic diagram of axial aberrations after passing through the camera optical lens 40 of the fourth embodiment at wavelengths of 830 nm, 850 nm, and 870 nm is shown.

[0265] As shown in Table 25, the four implementation methods satisfy each conditional expression.

[0266] In this embodiment, the entrance pupil diameter of the camera optical lens 40 is 2.157 mm, the full field of view image height is 3.300 mm, and the diagonal field of view is 143.88°. The camera optical lens 40 meets the characteristics of large aperture and miniaturization, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0267] Fifth implementation method:

[0268] Figure 17 This is a schematic diagram of the camera optical lens 50 in the fifth embodiment. The fifth embodiment is basically the same as the first embodiment, and the symbols have the same meanings as in the first embodiment. Only the differences are listed below.

[0269] Tables 17 and 18 show the design data of the camera optical lens 50 according to the fifth embodiment of the present invention.

[0270] Table 17

[0271]

[0272] Table 18

[0273]

[0274]

[0275] Tables 19 and 20 show the inflection point and stagnation point design data of each lens in the camera optical lens 50 of the fifth embodiment of the present invention.

[0276] Table 19

[0277]

[0278] Table 20

[0279]

[0280]

[0281] In addition, Table 25 below lists the values ​​of various parameters in the fifth embodiment and the parameters specified in the conditional expressions.

[0282] Figure 18 A schematic diagram of field curvature and distortion of light with a wavelength of 850 nanometers after passing through the camera optical lens 50 of the fifth embodiment is shown; Figure 19 A schematic diagram of magnification chromatic aberration after passing through the camera optical lens 50 of the fifth embodiment at wavelengths of 830 nm, 850 nm, and 870 nm is shown. Figure 20 A schematic diagram of axial aberrations after passing through the camera optical lens 50 of the fifth embodiment at wavelengths of 830 nm, 850 nm, and 870 nm is shown.

[0283] As shown in Table 25, the fifth embodiment satisfies all the conditional expressions.

[0284] In this embodiment, the entrance pupil diameter of the camera optical lens 50 is 2.187 mm, the full field of view image height is 3.300 mm, and the diagonal field of view is 155.20°. The camera optical lens 50 meets the characteristics of large aperture and miniaturization, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0285] Comparative implementation methods:

[0286] Figure 21 This is a schematic diagram of the camera optical lens 60 in the comparative embodiment. The symbols in the comparative embodiment have the same meanings as those in the first embodiment. Only the differences are listed below.

[0287] Tables 21 and 22 show the design data for the camera optical lens 60 of the comparative embodiment.

[0288]

[0289]

[0290] Table 22

[0291]

[0292]

[0293]

[0294]

[0295] Table 24

[0296] Number of outposts Location of the outpost P1R1 / / P1R2 / / P2R1 1 0.465 P2R2 1 1.365 P3R1 / / P3R2 / / P4R1 / / P4R2 / / P5R1 1 2.525 P5R2 1 0.635 P6R1 1 2.045 P6R2 1 2.135

[0297] Figure 22 A schematic diagram of astigmatism and distortion of light with a wavelength of 850 nanometers after passing through the camera optical lens 60 of the comparative embodiment is shown. Figure 23 A magnification chromatic aberration diagram is shown for the imaging optical lens 60 with wavelengths of 830 nm, 850 nm and 870 nm after comparative implementation. Figure 24 A schematic diagram of axial aberrations is shown for the camera optical lens 60 with wavelengths of 830 nm, 850 nm and 870 nm after comparative implementation.

[0298] Table 25 lists the values ​​of each conditional expression in the comparative embodiment according to the above conditions. Clearly, the camera optical lens 60 in the comparative embodiment does not satisfy the condition nd1≥1.70.

[0299] In the comparative embodiment, the entrance pupil diameter of the camera optical lens 60 is 2.463 mm, the full field of view image height is 3.300 mm, and the diagonal field of view is 133.90°. The camera optical lens 60 does not have excellent optical characteristics, and its on-axis and off-axis chromatic aberrations are not adequately corrected.

[0300] Table 25

[0301]

[0302] The camera optical lens provided by the embodiments of the present invention has been described in detail above. Specific examples have been used to illustrate the principle and implementation of the present invention. The above description of the embodiments is only for the purpose of helping to understand the idea of ​​the present invention. There may be changes in the specific implementation and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A camera optical lens, characterized in that, The camera optical lens, from the object side to the image side, comprises, in sequence: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens; the first lens has negative refractive power, the second lens has positive refractive power, the third lens has negative refractive power, the fourth lens has positive refractive power, the fifth lens has positive refractive power, and the sixth lens has positive refractive power; the refractive index of the first lens is nd1; the field of view of the camera optical lens is FOV; the focal length of the camera optical lens is f; and the image height of the camera optical lens is IH, satisfying the following condition: nd1 ≥ 1.70; 120.00≤(FOV f) / IH≤134.078。 2. The camera optical lens according to claim 1, characterized in that, The radius of curvature of the object side of the third lens is R5, and the radius of curvature of the image side of the third lens is R6, and the following condition is satisfied: -5.00≤R5 / R6≤-1.

20.

3. The camera optical lens according to claim 1, characterized in that, The radius of curvature of the object side of the fourth lens is R7, and the radius of curvature of the image side of the fourth lens is R8, and the following condition is satisfied: -4.00≤R7 / R8≤-1.

00.

4. The camera optical lens according to claim 1, characterized in that, The fifth lens has an on-axis thickness of d9, and the sixth lens has an on-axis thickness of d11, satisfying the following condition: 1.40≤d9 / d11≤5.

00.

5. The camera optical lens according to claim 1, characterized in that, The combined focal length of the first lens and the second lens is f12, and the following condition is satisfied: -6.00≤f12 / f≤-1.

20.

6. The camera optical lens according to claim 1, characterized in that, Its image-side surface is concave near the axis; the object-side radius of curvature of the first lens is R1, the image-side radius of curvature of the first lens is R2, the focal length of the first lens is f1, 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: 0.33≤(R1+R2) / (R1-R2)≤1.97; -3.54≤f1 / f≤-0.54; 0.02≤d1 / TTL≤0.

22.

7. 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 is convex near the axis; the radius of curvature of the object-side surface of the second lens is R3, the radius of curvature of the image-side surface of the second lens is R4, the focal length of the second lens is f2, 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: 0.54≤(R3+R4) / (R3-R4)≤1.71; 1.66≤f² / f≤5.87; 0.02≤d3 / TTL≤0.

09.

8. The camera optical lens according to claim 1, characterized in that, The object-side surface of the third lens is concave near the axis, and the image-side surface is concave near the axis; the radius of curvature of the object-side surface of the third lens is R5, the radius of curvature of the image-side surface of the third lens is R6, the focal length of the third lens is f3, the on-axis thickness of the third lens is d5, and the total optical length of the imaging optical lens is TTL, and satisfies the following relationship: 0.05≤(R5+R6) / (R5-R6)≤1.00; -7.30≤f3 / f≤-1.56; 0.02≤d5 / TTL≤0.

12.

9. The camera optical lens according to claim 1, characterized in that, The object-side surface of the fourth lens is convex at its paraxial position, and the image-side surface is convex at its paraxial position. The object-side radius of curvature of the fourth lens is R7, the image-side radius of curvature of the fourth lens is R8, the focal length of the fourth lens is f4, the on-axis thickness of the fourth lens is d7, and the total optical length of the camera lens is TTL, satisfying the following relationship: 0.00≤(R7+R8) / (R7-R8)≤0.90; 0.61≤f4 / f≤2.69; 0.03≤d7 / TTL≤0.

27.

10. The camera optical lens according to claim 1, characterized in that, The object-side surface of the fifth lens is convex near the axis, and the image-side surface is concave near the axis. The radius of curvature of the object-side surface of the fifth lens is R9, the radius of curvature of the image-side surface of the fifth lens is R10, the focal length of the fifth lens is f5, the on-axis thickness of the fifth lens is d9, and the total optical length of the camera lens is TTL, satisfying the following relationship: -17.54≤(R9+R10) / (R9-R10)≤-1.95; 4.38≤f5 / f≤45.60; 0.06≤d9 / TTL≤0.

36.

11. The camera optical lens according to claim 1, characterized in that, The object-side surface of the sixth lens is convex near the axis, and the image-side surface is concave near the axis; the radius of curvature of the object-side surface of the sixth lens is R11, the radius of curvature of the image-side surface of the sixth lens is R12, the focal length of the sixth lens is f6, the on-axis thickness of the sixth lens is d11, and the total optical length of the camera lens is TTL, and satisfies the following relationship: -5.98≤(R11+R12) / (R11-R12)≤-1.50; 0.92≤f6 / f≤4.36; 0.02≤d11 / TTL≤0.

14.

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

Images