Camera lens

Abstract

The application relates to the field of optical lenses and discloses a camera optical lens which comprises six lenses in sequence from the object side to the image side, namely a first lens with positive refractive power, a second lens with positive refractive power, a third lens with positive refractive power, a fourth lens with positive refractive power or negative refractive power, a fifth lens with positive refractive power, and a sixth lens with negative refractive power; wherein the focal length of the camera optical lens is f, the field angle of the 1.0 field of view of the camera optical lens is FOV, the image height of the 1.0 field of view of the camera optical lens is IH, the focal length of the fifth lens is f5, the focal length of the sixth lens is f6, the on-axis distance from the image side surface of the sixth lens to the image plane is BF, the total optical length of the camera optical lens is TTL, the central curvature radius of the object side surface of the first lens is R1, the central curvature radius of the image side surface of the first lens is R2, and the following relationships are met: 50.00 <= (FOVf) / (2IH) <= 55.00; -1.10 <= f5 / f6 <= -0.50; 0.15 <= BF / TTL <= 0.25; 0.25 <= R1 / R2 <= 0.85.

Description

Technical Field

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

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

[0003] To address the aforementioned problems, the main objective of this invention is to provide a camera optical lens that, while possessing excellent optical performance, also meets the design requirements of a large aperture and ultra-thin design.

[0004] To achieve the above objectives, the present invention provides a camera optical lens comprising six lenses, wherein the six lenses, from the object side to the image side, are in the following order: a first lens having positive refractive power, a second lens having positive refractive power, a third lens having negative refractive power, a fourth lens having either positive or negative refractive power, a fifth lens having positive refractive power, and a sixth lens having negative refractive power. Wherein, the focal length of the camera optical lens is f, the field of view of the camera optical lens in 1.0 field of view is FOV, the image height of the camera optical lens in 1.0 field of view is IH, the focal length of the fifth lens is f5, the focal length of the sixth lens is f6, the axial distance from the image side surface of the sixth lens to the image plane is BF, the total optical length of the camera optical lens is TTL, the central radius of curvature of the object side surface of the first lens is R1, the central radius of curvature of the image side surface of the first lens is R2, and the following relationship is satisfied: 50.00≤(FOV) f) / (2 IH)≤55.00; -1.10≤f5 / f6≤-0.50; 0.15≤BF / TTL≤0.25; 0.25≤R1 / R2≤0.85.

[0005] Preferably, the focal length of the third lens is f3, the on-axis thickness of the third lens is d5, and the following relationship is satisfied: -30.00≤f3 / d5≤-5.00.

[0006] Preferably, 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 axial thickness of the first lens is d1, and the following relationships are satisfied: 1.17≤f1 / f≤2.29; -11.70≤(R1+R2) / (R1-R2)≤-1.66; 0.061≤d1 / TTL≤0.099.

[0007] Preferably, the object-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 surface of the second lens is R3, the central radius of curvature of the image-side surface of the second lens is R4, and the axial thickness of the second lens is d3, and the following relationships are satisfied: 0.76≤f2 / f≤1.01; -1.39≤(R3+R4) / (R3-R4)≤-0.10; 0.064≤d3 / TTL≤0.097.

[0008] Preferably, the object-side surface of the third lens is convex near the axis, and the image-side surface of the third lens is concave near the axis; the focal length of the third lens is f3, the central radius of curvature of the object-side surface of the third lens is R5, the central radius of curvature of the image-side surface of the third lens is R6, and the axial thickness of the third lens is d5, and satisfies the following relationships: -0.81≤f3 / f≤-0.55; 1.36≤(R5+R6) / (R5-R6)≤1.99; 0.020≤d5 / TTL≤0.102.

[0009] Preferably, the object-side surface of the fourth lens is concave near the axis, and the image-side surface of the fourth lens is convex near the axis; the focal length of the fourth lens is f4, the central radius of curvature of the object-side surface of the fourth lens is R7, the central radius of curvature of the image-side surface of the fourth lens is R8, and the axial thickness of the fourth lens is d7, and the following relationships are satisfied: -3.12≤f4 / f≤6.09; -3.27≤(R7+R8) / (R7-R8)≤4.32; 0.048≤d7 / TTL≤0.094.

[0010] Preferably, the object-side surface of the fifth lens is concave near the axis, and the image-side surface of the fifth lens is convex near the axis; the central radius of curvature of the object-side surface of the fifth lens is R9, the central radius of curvature of the image-side surface of the fifth lens is R10, and the axial thickness of the fifth lens is d9, and satisfies the following relationships: 0.34≤f5 / f≤0.57; 1.08≤(R9+R10) / (R9-R10)≤2.19; 0.134≤d9 / TTL≤0.181.

[0011] Preferably, the object-side surface of the sixth lens is convex near the axis, and the image-side surface of the sixth lens is concave near the axis; the central radius of curvature of the object-side surface of the sixth lens is R11, the central radius of curvature of the image-side surface of the sixth lens is R12, and the axial thickness of the sixth lens is d11, satisfying the following relationships: -1.14≤f6 / f≤-0.31; 1.04≤(R11+R12) / (R11-R12)≤2.65; 0.063≤d11 / TTL≤0.112.

[0012] Preferably, the first lens is made of glass.

[0013] Preferably, the camera optical lens also satisfies the following relationship: 2.66≤TTL / IH≤2.89.

[0014] The beneficial effects of the present invention are as follows: the camera optical lens of the present invention has excellent optical characteristics, can realize telephoto imaging under a large image plane, has high imaging quality, and has a compact structure with ultra-thin characteristics, 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 Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the 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: Figure 1 This is a schematic diagram of the structure of the camera optical lens according to the first embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of axial aberrations of the camera optical lens shown. Figure 3 yes Figure 1 A schematic diagram of chromatic aberration at magnification for a camera lens; Figure 4 yes Figure 1A schematic diagram of field curvature and distortion of the camera optical lens shown; Figure 5 This is a schematic diagram of the structure of the camera optical lens according to the second embodiment of the present invention; Figure 6 yes Figure 5 A schematic diagram of axial aberrations of the camera optical lens shown. Figure 7 yes Figure 5 A schematic diagram of chromatic aberration at magnification for a camera lens; Figure 8 yes Figure 5 A schematic diagram of field curvature and distortion of the camera optical lens shown; Figure 9 This is a schematic diagram of the structure of the camera optical lens according to the third embodiment of the present invention; Figure 10 yes Figure 9 A schematic diagram of axial aberrations of the camera optical lens shown. Figure 11 yes Figure 9 A schematic diagram of chromatic aberration at magnification for a camera lens; Figure 12 yes Figure 9 The diagram shows the field curvature and distortion of the camera lens. Detailed Implementation

[0016] 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.

[0017] Referring to the accompanying drawings, the technical solution of the present invention provides a camera optical lens 10, 20, 30. Figure 1 , 5 Figures 1 and 9 show the imaging optical lenses 10, 20, and 30 of the present invention, which together comprise six lenses. Specifically, the imaging optical lenses, from the object side to the image side, are as follows: first lens L1, aperture S1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, and sixth lens L6. An optical filter GF or other optical element may be disposed between the sixth lens L6 and the image plane Si.

[0018] The first lens L1 is made of glass, the second lens L2 is made of plastic, the third lens L3 is made of plastic, the fourth lens L4 is made of plastic, the fifth lens L5 is made of plastic, and the sixth lens L6 is made of plastic. The second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6 can also be made of other materials.

[0019] Let the focal length of the camera lens be f, the field of view (FOV) of the camera lens in its 1.0 field of view be FOV, and the image height (IH) of the camera lens in its 1.0 field of view be IH. The following relationship must be satisfied: 50.00 ≤ (FOV) f) / (2 The condition IH)≤55.00 specifies the range of ratios between the field of view, focal length, and image height. Within this range, it helps to achieve telephoto imaging with a large image plane.

[0020] The focal length of the fifth lens L5 is defined as f5, and the focal length of the sixth lens L6 is defined as f6, satisfying the following relationship: -1.10≤f5 / f6≤-0.50. This specifies the ratio of the focal lengths of the fifth lens L5 and the sixth lens L6. Within the range of this condition, by reasonably allocating the optical focal length of the system, the system can achieve better imaging quality and lower sensitivity.

[0021] The on-axis distance from the image side surface of the sixth lens L6 to the image plane Si is defined as BF, and the total optical length of the camera lens is TTL, satisfying the following relationship: 0.15≤BF / TTL≤0.25. This specifies the range of the ratio between the on-axis distance from the image side surface of the sixth lens L6 to the image plane Si and the total optical length. Within this range, while achieving miniaturization, reasonable control of the back focal length is beneficial for module assembly. At the same time, the structure is compact, reducing the sensitivity of the lens to MTF, improving production yield, and reducing production costs.

[0022] The center radius of curvature of the object side of the first lens L1 is defined as R1, and the center radius of curvature of the image side of the first lens L1 is defined as R2, satisfying the following relationship: 0.25≤R1 / R2≤0.85. This defines the shape of the first lens L1. Within the range of the condition, the surface shape of the first lens L1 can be reasonably controlled, which helps to reduce the sensitivity of the system and also reduces stray light generated by the lens, thereby improving the image quality of the lens.

[0023] The focal length of the third lens L3 is defined as f3, and the on-axis thickness of the third lens L3 is defined as d5, satisfying the following relationship: -30.00≤f3 / d5≤-5.00. This specifies the ratio of the focal length to the on-axis thickness of the third lens L3. Within the range of the condition, it helps to buffer the change in the incident angle of light with a large angle of view, allowing it to propagate smoothly in the optical imaging lens group, while maintaining the refractive power of the third lens L3 to improve chromatic aberration and enhance image quality.

[0024] Under the above conditions, the camera optical lenses 10, 20, and 30 have good optical performance while meeting the design requirements of large aperture and ultra-thin design. Based on the characteristics of the camera optical lenses 10, 20, and 30, they are particularly suitable for mobile phone camera lens assemblies and WEB camera lenses composed of high-pixel CCD, CMOS and other camera elements.

[0025] Based on the above conditional expressions and the functions that can be achieved, the characteristics of each lens are further refined as follows.

[0026] The object-side surface of the first lens L1 is convex near the axis, and the image-side surface is concave near the axis. The first lens L1 has positive refractive power. The object-side surface and image-side surface of the first lens L1 can also be configured with other concave and convex distributions.

[0027] The focal length of the first lens L1 is defined as f1, and the focal length of the imaging optical lens is defined as f, satisfying the following relationship: 1.17≤f1 / f≤2.29, which specifies the ratio of the positive refractive power of the first lens L1 to the overall focal length. Within the specified range, the first lens L1 has appropriate positive refractive power, which is beneficial for reducing system aberrations and also for the development of ultra-thin lenses.

[0028] Define the center radius of curvature of the object side of the first lens L1 as R1 and the center radius of curvature of the image side of the first lens L1 as R2, satisfying the following relationship: -11.70≤(R1+R2) / (R1-R2)≤-1.66. Reasonably control the shape of the first lens L1 so that the first lens L1 can effectively correct the spherical aberration of the system.

[0029] The on-axis thickness of the first lens L1 is d1, and the total optical length of the camera lens is TTL. The following relationship is satisfied: 0.061≤d1 / TTL≤0.099. Within the range of the condition, it is beneficial to achieve ultra-thinness.

[0030] The object-side surface of the second lens L2 is convex near the axis, while the image-side surface is either concave or convex near the axis. The second lens L2 has positive refractive power. The object-side surface of the second lens L2 can also be configured with other concave or convex distributions.

[0031] Let f be the focal length of the camera lens and f2 be the focal length of the second lens L2, satisfying the following relationship: 0.76≤f2 / f≤1.01. By controlling the positive optical power of the second lens L2 within a reasonable range, it is beneficial to correct the aberrations of the optical system.

[0032] The center radius of curvature of the object side of the second lens L2 is R3, and the center radius of curvature of the image side of the second lens L2 is R4, satisfying the following relationship: -1.39≤(R3+R4) / (R3-R4)≤-0.10, which defines the shape of the second lens L2. When within this range, as lenses develop towards ultra-thinness, it is beneficial to correct on-axis chromatic aberration.

[0033] The on-axis thickness of the second lens L2 is d3, and the total optical length of the camera lens is TTL, satisfying the following relationship: 0.064≤d3 / TTL≤0.97. Within the range of the condition, it is beneficial to achieve ultra-thinness.

[0034] The object-side surface of the third lens L3 is convex near the axis, and the image-side surface is concave near the axis. The third lens L3 has negative refractive power. The object-side and image-side surfaces of the third lens L3 can also be configured with other concave and convex distributions.

[0035] The focal length of the camera lens is defined as f, and the focal length of the third lens L3 is defined as f3, satisfying the following relationship: -0.81≤f3 / f≤-0.55. Through the reasonable allocation of optical power, the system has better imaging quality and lower sensitivity.

[0036] 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, satisfying the following relationship: 1.36≤(R5+R6) / (R5-R6)≤1.99. This defines the shape of the third lens L3, which is beneficial to the shaping of the third lens L3. Within the range specified by the condition, it can mitigate the degree of refraction of light passing through the lens and effectively reduce aberrations.

[0037] The on-axis thickness of the third lens L3 is d5, and the total optical length of the camera lens is TTL, satisfying the following relationship: 0.020≤d5 / TTL≤0.102. Within the range of the condition, it is beneficial to achieve ultra-thinness.

[0038] The object-side surface of the fourth lens L4 is concave near the axis, and the image-side surface is convex near the axis. The fourth lens L4 has either positive or negative refractive power. The object-side and image-side surfaces of the fourth lens L4 can also be configured with other concave or convex distributions.

[0039] The focal length of the camera lens is defined as f, and the focal length of the fourth lens L4 is f4, satisfying the following relationship: -3.12≤f4 / f≤6.09. Through the reasonable allocation of optical power, the system has better imaging quality and lower sensitivity.

[0040] The central radius of curvature of the object side of the fourth lens L4 is R7, and the central radius of curvature of the image side of the fourth lens L4 is R8, and they satisfy the following relationship: -3.27≤(R7+R8) / (R7-R8)≤4.32, which defines the shape of the fourth lens L4. When within this range, with the development of ultra-thinness, it is beneficial to correct aberrations and other problems in off-axis drawing angles.

[0041] The on-axis thickness of the fourth lens L4 is d7, and the total optical length of the camera lens is TTL, satisfying the following relationship: 0.048≤d7 / TTL≤0.094. Within the range of the condition, it is beneficial to achieve ultra-thinness.

[0042] The object-side surface of the fifth lens L5 is concave near the axis, while the image-side surface is convex near the axis. The fifth lens L5 has positive refractive power. The object-side and image-side surfaces of the fifth lens L5 can also be configured with other concave and convex distributions.

[0043] The focal length of the camera optical lens is defined as f, and the focal length of the fifth lens L5 is f5, satisfying the following relationship: 0.34≤f5 / f≤0.57. This limitation on the fifth lens L5 can effectively make the light angle of the camera optical lens smooth and reduce tolerance sensitivity.

[0044] 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: 1.08≤(R9+R10) / (R9-R10)≤2.19, which defines the shape of the fifth lens L5. When within this range, with the development of ultra-thinness, it is beneficial to correct aberrations and other problems in off-axis drawing angles.

[0045] The on-axis thickness of the fifth lens L5 is d9, and the total optical length of the camera lens is TTL, satisfying the following relationship: 0.134≤d9 / TTL≤0.181. Within the range of the condition, it is beneficial to achieve ultra-thinness.

[0046] The object-side surface of the sixth lens L6 is convex near the axis, and the image-side surface is concave near the axis. The sixth lens L6 has negative refractive power. The object-side and image-side surfaces of the sixth lens L6 can also be configured with other concave and convex distributions.

[0047] The focal length of the camera lens is defined as f, and the focal length of the sixth lens L6 is f6, satisfying the following relationship: -1.14≤f6 / f≤-0.31. Through the reasonable allocation of optical power, the system has better imaging quality and lower sensitivity.

[0048] The central radius of curvature of the object side of the sixth lens L6 is R11, and the central radius of curvature of the image side of the sixth lens L6 is R12, satisfying the following relationship: 1.04≤(R11+R12) / (R11-R12)≤2.65, which defines the shape of the sixth lens. Within the specified range, with the development of ultra-thin lenses, this is beneficial for correcting aberrations and other problems at off-axis drawing angles.

[0049] The on-axis thickness of the sixth lens L6 is d11, and the total optical length of the camera lens is TTL, satisfying the following relationship: 0.063≤d11 / TTL≤0.112. Within the range of the condition, it is beneficial to achieve ultra-thinness.

[0050] The image height of the camera optical lens with a field of view of 1.0 is IH, and the total optical length of the camera optical lens is TTL, and the following relationship is satisfied: 2.66≤TTL / IH≤2.89, which is conducive to achieving ultra-thinness.

[0051] 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.

[0052] TTL: Total optical length (axial distance from the object surface of the first lens L1 to the image plane Si), in mm; Aperture value FNO: refers to the ratio of the effective focal length to the entrance pupil diameter of a camera lens.

[0053] 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). 1.0 Field of View (FOV): The field of view angle corresponding to the effective pixel of the sensor; Image height Ihm of the MIC field of view: The field of view height extended beyond 1.0 to prevent assembly deviations; FOVm: The field of view angle corresponding to the image height of the MIC field of view; 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.

[0054] The technical solution of the present invention will be described in detail below with three embodiments. The technical effects of the present invention cannot be achieved when the above-described conditions are not met.

[0055] (First Implementation) Tables 1 and 2 show the design data of the camera optical lens 10 according to the first embodiment of the present invention.

[0056] Table 1

[0057] The meanings of each symbol are as follows.

[0058] S1: Aperture; R: Radius of curvature at the center of the optical surface; R1: The central radius of curvature of the object-side surface of the first lens L1; R2: The central radius of curvature of the image-side surface of the first lens L1; R3: The central radius of curvature of the object-side surface of the second lens L2; R4: The central radius of curvature of the image-side surface of the second lens L2; R5: The central radius of curvature of the object-side surface of the third lens L3; R6: The central radius of curvature of the image-side surface of the third lens L3; R7: The central radius of curvature of the object side surface of the fourth lens L4; R8: The central radius of curvature of the image-side surface of the fourth lens L4; R9: The central radius of curvature of the object-side surface of the fifth lens L5; R10: The central radius of curvature of the image-side surface of the fifth lens L5; R11: The central radius of curvature of the object-side surface of the sixth lens L6; R12: The central radius of curvature of the image-side surface of the sixth lens L6; R13: The center radius of curvature of the object side surface of the optical filter GF; R14: Radius of curvature of the center of the image side of the optical filter GF; d: Axial thickness of the lens, axial distance between lenses; d0: The on-axis distance from aperture S1 to the object-side surface of the first lens L1; d1: On-axis thickness of the first lens L1; 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; d3: On-axis thickness of the second lens L2; d4: The axial 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; 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; d7: On-axis thickness of the fourth lens L4; 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; d9: On-axis thickness of the fifth lens L5; d10: The axial distance from the image-side surface of the fifth lens L5 to the object-side surface of the sixth lens L6; d11: On-axis thickness of the sixth lens L6; d12: The on-axis distance from the image side of the sixth lens L6 to the object side of the optical filter GF; d13: On-axis thickness of the optical filter GF; d14: The axial distance from the image-side surface of the optical filter GF to the image plane Si; nd: Refractive index of the d-line (wavelength of the d-line is 587.56 nm); nd1: The refractive index of the d-line of the first lens L1; nd2: The refractive index of the d-line of the second lens L2; nd3: The refractive index of the d-line of the third lens L3; nd4: The refractive index of the d-line of the fourth lens L4; nd5: The refractive index of the d-line of the fifth lens L5; nd6: The refractive index of the d-line of the sixth lens L6; ndg: The refractive index of the d-line of the optical filter GF; vd: Abbe number; v1: Abbe number of the first lens L1; v2: Abbe number of the second lens L2; v3: Abbe number of the third lens L3; v4: Abbe number of the fourth lens L4; v5: Abbe number of the fifth lens L5; v6: Abbe number of the sixth lens L6; vg: Abbe number of the optical filter GF.

[0059] Table 2 shows the aspherical data of each lens in the camera optical lens 10 of the first embodiment of the present invention.

[0060] Table 2

[0061] For convenience, the aspherical surfaces of each lens surface are as shown in the following formula (1). However, the present invention is not limited to the aspherical polynomial form represented by formula (1).

[0062] z=(cr 2 ) / {1+[1-(k+1)(c 2 r 2 )] 1 / 2}+A4r 4 +A6r 6 +A8r 8 +A10r10 +A12r 12 +A14r 14 +A16r 16 +A18r 18 +A20r 20 (1) 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).

[0063] Tables 3 and 4 show the inversion point and stagnation point design data of each lens in the camera optical lens 10 of the first embodiment of the present invention. P1R1 and P1R2 represent the object-side and image-side surfaces of the first lens L1, respectively; P2R1 and P2R2 represent the object-side and image-side surfaces of the second lens L2, respectively; P3R1 and P3R2 represent the object-side and image-side surfaces of the third lens L3, respectively; P4R1 and P4R2 represent the object-side and image-side surfaces of the fourth lens L4, respectively; P5R1 and P5R2 represent the object-side and image-side surfaces of the fifth lens L5, respectively; 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 camera 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 camera optical lens 10.

[0064] Table 3

[0065] Table 4

[0066] Figure 2 , Figure 3 Axial aberration and magnification chromatic aberration are shown respectively after light with wavelengths of 650nm, 610nm, 555nm, 510nm and 470nm passes through the camera optical lens 10 of the first embodiment. Figure 4 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 555nm passes through the camera optical lens 10 of the first embodiment. Figure 4 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0067] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 10 is 8.028 mm, the image height IH of the 1.0 field of view is 6.247 mm, the field of view FOV of the 1.0 field of view is 45.80°, the image height IHm of the MIC field of view is 6.300 mm, and the field of view FOVm of the MIC field of view is 46.15°.

[0068] The camera optical lens 10 meets the design requirements of large aperture and ultra-thin design, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0069] (Second Implementation) The symbols in the second embodiment have the same meanings as those in the first embodiment.

[0070] Figure 5 The image shows the camera optical lens 20 according to the second embodiment of the present invention.

[0071] Tables 5 and 6 show the design data of the camera optical lens 20 according to the second embodiment of the present invention.

[0072] Table 5

[0073] Table 6 shows the aspherical data of each lens in the camera optical lens 20 of the second embodiment of the present invention.

[0074] Table 6

[0075] 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.

[0076] Table 7

[0077] Table 8

[0078] Figure 6 , Figure 7 Axial aberration and magnification chromatic aberration are shown respectively after light with wavelengths of 650nm, 610nm, 555nm, 510nm and 470nm passes through the camera optical lens 20 of the second embodiment. Figure 8 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 555nm passes through the camera optical lens 20 of the second embodiment. Figure 8 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0079] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 20 is 6.840 mm, the image height IH of the 1.0 field of view is 6.247 mm, the field of view FOV of the 1.0 field of view is 51.27°, the image height IHm of the MIC field of view is 6.300 mm, and the field of view FOVm of the MIC field of view is 51.95°.

[0080] The camera optical lens 20 meets the design requirements of large aperture and ultra-thin design. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0081] (Third Implementation) The symbols in the third embodiment have the same meanings as those in the first embodiment.

[0082] Figure 9 The image shown is the camera optical lens 30 according to the third embodiment of the present invention.

[0083] Tables 9 and 10 show the design data of the camera optical lens 30 according to the third embodiment of the present invention.

[0084] Table 9

[0085] Table 10 shows the aspherical data of each lens in the camera optical lens 30 of the third embodiment of the present invention.

[0086] Table 10

[0087] 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.

[0088] Table 11

[0089] Table 12

[0090] Figure 10 , Figure 11 Axial aberration and magnification chromatic aberration are shown respectively after light with wavelengths of 650nm, 610nm, 555nm, 510nm and 470nm passes through the camera optical lens 30 of the third embodiment. Figure 12 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 555nm passes through the camera optical lens 30 of the third embodiment. Figure 12 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0091] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 30 is 7.732 mm, the image height IH of the 1.0 field of view is 6.247 mm, the field of view FOV of the 1.0 field of view is 48.80°, the image height IHm of the MIC field of view is 6.300 mm, and the field of view FOVm of the MIC field of view is 49.24°.

[0092] The camera optical lens 30 meets the design requirements of large aperture and ultra-thin design, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0093] Table 13 shows the values ​​corresponding to various numerical values ​​and parameters specified in the conditional expressions for each of the three implementation methods.

[0094] Table 13

[0095] 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 six lenses, which are arranged in the following order from the object side to the image side: a first lens with positive refractive power, a second lens with positive refractive power, a third lens with negative refractive power, a fourth lens with either positive or negative refractive power, a fifth lens with positive refractive power, and a sixth lens with negative refractive power. Wherein, the focal length of the camera optical lens is f, the field of view of the camera optical lens in 1.0 field of view is FOV, the image height of the camera optical lens in 1.0 field of view is IH, the focal length of the fifth lens is f5, the focal length of the sixth lens is f6, the axial distance from the image side surface of the sixth lens to the image plane is BF, the total optical length of the camera optical lens is TTL, the central radius of curvature of the object side surface of the first lens is R1, the central radius of curvature of the image side surface of the first lens is R2, and the following relationship is satisfied: 50.00≤(FOV f) / (2 IH)≤55.00; -1.10≤f5 / f6≤-0.50; 0.15≤BF / TTL≤0.25; 0.25≤R1 / R2≤0.

85.

2. The camera optical lens according to claim 1, characterized in that, The third lens has a focal length of f3 and an on-axis thickness of d5, and satisfies the following relationship: -30.00≤f3 / d5≤-5.

00.

3. The camera optical lens according to claim 1, characterized in that, The object-side surface of the first lens is convex at the paraxial position, and the image-side surface of the first lens is concave at the paraxial position. The focal length of the first lens is f1, the on-axis thickness of the first lens is d1, and the following relationship is satisfied: 1.17≤f1 / f≤2.29; -11.70≤(R1+R2) / (R1-R2)≤-1.66; 0.061≤d1 / TTL≤0.

099.

4. The camera optical lens according to claim 1, characterized in that, The object-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, satisfying the following relationship: 0.76≤f² / f≤1.01; -1.39≤(R3+R4) / (R3-R4)≤-0.10; 0.064≤d3 / TTL≤0.

097.

5. The camera optical lens according to claim 1, characterized in that, The object-side surface of the third lens is convex at the paraxial position, and the image-side surface of the third lens is concave at the paraxial position. The focal length of the third lens is f3, the central radius of curvature of the object side of the third lens is R5, the central radius of curvature of the image side of the third lens is R6, and the axial thickness of the third lens is d5, and the following relationship is satisfied: -0.81≤f3 / f≤-0.55; 1.36≤(R5+R6) / (R5-R6)≤1.99; 0.020≤d5 / TTL≤0.

102.

6. The camera optical lens according to claim 1, characterized in that, The object-side surface of the fourth lens is concave 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: -3.12≤f4 / f≤6.09; -3.27≤(R7+R8) / (R7-R8)≤4.32; 0.048≤d7 / TTL≤0.

094.

7. 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 convex near the axis. The central radius of curvature of the object-side surface of the fifth lens is R9, the central radius of curvature of the image-side surface of the fifth lens is R10, and the axial thickness of the fifth lens is d9, satisfying the following relationship: 0.34≤f5 / f≤0.57; 1.08≤(R9+R10) / (R9-R10)≤2.19; 0.134≤d9 / TTL≤0.

181.

8. The camera optical lens according to claim 1, characterized in that, The object-side surface of the sixth lens is convex at the paraxial position, and the image-side surface of the sixth lens is concave at the paraxial position. The center radius of curvature of the object-side surface of the sixth lens is R11, the center radius of curvature of the image-side surface of the sixth lens is R12, and the axial thickness of the sixth lens is d11, satisfying the following relationship: -1.14≤f6 / f≤-0.31; 1.04≤(R11+R12) / (R11-R12)≤2.65; 0.063≤d11 / TTL≤0.

112.

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

10. The camera optical lens according to claim 1, characterized in that, The camera optical lens also satisfies the following relationship: 2.66≤TTL / IH≤2.89.

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