Camera lens

Abstract

The application relates to the field of optical lenses and discloses a camera optical lens which comprises five lenses in sequence from the object side to the image side, namely a first lens with positive refractive power, a second lens with negative refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power and a fifth lens with negative refractive power; the on-axis distance from the image side of the third lens to the object side of the fourth lens is d6, the total optical length of the camera optical lens is TTL, the focal length of the first lens is f1, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the central curvature radii of the object side and the image side of the third lens at the near axis are R5 and R6 respectively, the central curvature radii of the object side and the image side of the fifth lens at the near axis are R9 and R10 respectively, the focal length of the camera optical lens is f, and the following relationships are met: 0.20 <= d6 / TTL <= 0.36; 6.00 <= (f4-f5) / f1 <= 10.10; -1.00 <= (R5+R6) / (R5-R6) <= -0.70; -0.80 <= (R9+R10) / f <= -0.39.

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, PC lenses, and automotive lenses. Background Technology

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

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

[0004] To achieve the above objectives, the present invention provides a camera optical lens comprising five lenses, which, from the object side to the image side, are sequentially: a first lens with positive refractive power, a second lens with negative refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, and a fifth lens with negative refractive power; wherein the axial distance from the image side of the third lens to the object side of the fourth lens is d6, the total optical length of the camera optical lens is TTL, the focal length of the first lens is f1, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the central radius of curvature of the object side of the third lens at the paraxial position is R5, the central radius of curvature of the image side of the third lens at the paraxial position is R6, the central radius of curvature of the object side of the fifth lens at the paraxial position is R9, the central radius of curvature of the image side of the fifth lens at the paraxial position is R10, and the focal length of the camera optical lens is f, satisfying the following relationship:

[0005] 0.20≤d6 / TTL≤0.36;

[0006] 6.00≤(f4-f5) / f1≤10.10;

[0007] -1.00≤(R5+R6) / (R5-R6)≤-0.70;

[0008] -0.80≤(R9+R10) / f≤-0.39.

[0009] Preferably, the axial thickness of the first lens is d1, the axial thickness of the second lens is d3, and the axial thickness of the third lens is d5, satisfying the following relationship:

[0010] 1.50≤d1 / (d3+d5)≤3.50.

[0011] Preferably, the effective radius of the object-side surface of the first lens is SD11, the on-axis distance between the intersection of the object-side surface of the first lens and the optical axis and the vertex of the effective radius of the object-side surface of the first lens is SAG11, and the image height of the imaging optical lens in the 1.0 field of view is IH, satisfying the following relationship: 0.39≤SD11*SAG11 / IH≤0.65.

[0012] Preferably, the object-side surface of the first lens is convex at the paraxial position, and the image-side surface of the first lens is also convex at the paraxial position; the central radius of curvature of the object-side surface of the first lens at the paraxial position is R1, the central radius of curvature of the image-side surface of the first lens at the paraxial position is R2, and the axial thickness of the first lens is d1, satisfying the following relationship:

[0013] 0.18≤f1 / f≤0.65;

[0014] -1.44≤(R1+R2) / (R1-R2)≤-0.42;

[0015] 0.08≤d1 / TTL≤0.32.

[0016] Preferably, the object-side surface of the second lens is convex at the paraxial position, and the image-side surface of the second lens is concave at the paraxial position; the focal length of the second lens is f2, the central radius of curvature of the object-side surface of the second lens at the paraxial position is R3, the central radius of curvature of the image-side surface of the second lens at the paraxial position is R4, and the on-axis thickness of the second lens is d3, and satisfies the following relationship:

[0017] -1.89≤f² / f≤-0.49;

[0018] 0.75≤(R3+R4) / (R3-R4)≤5.28;

[0019] 0.02≤d3 / TTL≤0.10.

[0020] Preferably, the object-side surface of the third lens is concave 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, and the axial thickness of the third lens is d5, and the following relationship is satisfied:

[0021] -2.84≤f3 / f≤-0.35;

[0022] 0.01≤d5 / TTL≤0.06.

[0023] Preferably, the object-side surface of the fourth lens is concave at the paraxial position, and the image-side surface of the fourth lens is convex at the paraxial position; the central radius of curvature of the object-side surface of the fourth lens at the paraxial position is R7, the central radius of curvature of the image-side surface of the fourth lens at the paraxial position is R8, and the axial thickness of the fourth lens is d7, and satisfies the following relationship:

[0024] 0.53≤f4 / f≤2.26;

[0025] 1.30≤(R7+R8) / (R7-R8)≤10.54;

[0026] 0.04≤d7 / TTL≤0.14.

[0027] Preferably, the object-side surface of the fifth lens is concave near the axis; the image-side surface of the fifth lens is convex near the axis; the axial thickness of the fifth lens is d9, and satisfies the following relationship:

[0028] -5.46≤f5 / f≤-0.73;

[0029] -16.50≤(R9+R10) / (R9-R10)≤-2.05;

[0030] 0.03≤d9 / TTL≤0.20.

[0031] Preferably, the field of view (FOV) of the camera optical lens in a 1.0 field of view is FOV, and satisfies the following relationship: f / FOV≥8.10.

[0032] Preferably, the aperture value of the camera optical lens is FNO, and satisfies: FNO≤2.40.

[0033] The beneficial effects of the present invention are as follows: the camera optical lens of the present invention has excellent optical characteristics, and has the characteristics of sufficient aberration correction, large aperture, telephoto, and ultra-thinness. It is especially suitable for mobile phone camera lens assemblies, WEB camera lenses, and automotive lenses composed of high-pixel CCD, CMOS and other camera elements. Attached Figure Description

[0034] 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:

[0035] Figure 1 This is a schematic diagram of the structure of the camera optical lens according to the first embodiment of the present invention;

[0036] Figure 2 yes Figure 1 A schematic diagram of axial aberrations of the camera optical lens shown;

[0037] Figure 3 yes Figure 1 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0038] Figure 4 yes Figure 1 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0039] Figure 5 This is a schematic diagram of the structure of the camera optical lens according to the second embodiment of the present invention;

[0040] Figure 6 yes Figure 5 A schematic diagram of axial aberrations of the camera optical lens shown;

[0041] Figure 7 yes Figure 5 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0042] Figure 8 yes Figure 5 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0043] Figure 9 This is a schematic diagram of the structure of the camera optical lens according to the third embodiment of the present invention;

[0044] Figure 10 yes Figure 9 A schematic diagram of axial aberrations of the camera optical lens shown;

[0045] Figure 11 yes Figure 9 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0046] Figure 12 yes Figure 9 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0047] Figure 13This is a schematic diagram of the structure of the camera optical lens according to the fourth embodiment of the present invention;

[0048] Figure 14 yes Figure 13 A schematic diagram of axial aberrations of the camera optical lens shown;

[0049] Figure 15 yes Figure 13 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0050] Figure 16 yes Figure 13 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0051] Figure 17 This is a schematic diagram of the structure of the camera optical lens according to the fifth embodiment of the present invention;

[0052] Figure 18 yes Figure 17 A schematic diagram of axial aberrations of the camera optical lens shown;

[0053] Figure 19 yes Figure 17 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0054] Figure 20 yes Figure 17 The diagram shows the field curvature and distortion of the camera lens. Detailed Implementation

[0055] 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.

[0056] Reference Appendix Figures 1-20 The technical solution of the present invention provides a camera optical lens 10, 20, 30, 40, 50. Figure 1 , 5 Figures 9, 13, and 17 show the imaging optical lenses 10, 20, 30, 40, and 50 of the present invention, which together comprise five 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, and fifth lens L5. An optical filter GF or other optical element may be disposed between the fifth lens L5 and the image plane Si.

[0057] Lens L1, Lens L2, Lens L3, Lens L4, and Lens L5 are all made of plastic. Other materials may also be used for the lenses.

[0058] The axial distance from the image side of the third lens L3 to the object side of the fourth lens L4 is defined as d6, and the total optical length of the camera lens is TTL, satisfying the following relationship: 0.20≤d6 / TTL≤0.36. This specifies the ratio of the air gap between the third lens L3 and the fourth lens L4 to the total optical length. Within the range of the condition, this helps to compress the total optical length of the system and achieve an ultra-thin effect.

[0059] The focal length of the first lens L1 is defined as f1, the focal length of the fourth lens L4 is defined as f4, and the focal length of the fifth lens L5 is defined as f5, satisfying the following relationship: 6.00≤(f4-f5) / f1≤10.10. This specifies the ratio of the focal length difference between the fourth and fifth lenses to the focal length of the first lens. Within the range of the condition, the field curvature of the system can be effectively balanced, making the field curvature offset of the central field of view less than 0.025mm.

[0060] The central radius of curvature of the object side of the third lens L3 at the paraxial position is defined as R5, and the central radius of curvature of the image side of the third lens L3 at the paraxial position is defined as R6, satisfying the following relationship: -1.00≤(R5+R6) / (R5-R6)≤-0.70. This defines the shape of the third lens, and within the range of the condition, reduces the degree of light refraction, effectively corrects chromatic aberration, and makes the chromatic aberration |LC|≤1.0μm.

[0061] The object-side radius of curvature of the fifth lens L5 at the paraxial position is defined as R9, the image-side radius of curvature of the fifth lens L5 at the paraxial position is defined as R10, and the focal length of the camera lens is f. The following relationship is satisfied: -0.80≤(R9+R10) / f≤-0.39. This defines the shape of the fifth lens. Within the range of the condition, it is beneficial to correct the astigmatism and distortion of the camera lens, so that the distortion |Distortion|≤1.1%, and reduce the possibility of vignetting.

[0062] Under the conditions described above, the camera optical lenses 10, 20, 30, 40, and 50 have good optical performance while meeting the design requirements of large aperture, telephoto, and ultra-thin design. Based on the characteristics of the camera optical lenses 10, 20, 30, 40, and 50, they are particularly suitable for mobile phone camera lens assemblies and web camera lenses composed of high-pixel CCD, CMOS, and other camera elements.

[0063] Based on the above conditional expressions and the functions that can be achieved, the characteristics of each lens are further refined as follows.

[0064] The on-axis thickness of the first lens L1 is defined as d1, the on-axis thickness of the second lens L2 is defined as d3, and the on-axis thickness of the third lens L3 is defined as d5, satisfying the following relationship: 1.50≤d1 / (d3+d5)≤3.50. This specifies the ratio of the on-axis thicknesses of the first lens, the second lens, and the third lens. Within the range of the condition, this helps to compress the overall length of the optical system and achieve an ultra-thin effect.

[0065] The effective radius of the object-side surface of the first lens L1 is defined as SD11, and the axial distance between the intersection of the object-side surface of the first lens L1 and the optical axis and the vertex of the effective radius of the object-side surface of the first lens L1 is defined as SAG11. The image height of the imaging optical lens in a 1.0 field of view is defined as IH, satisfying the following relationship: 0.39≤SD11*SAG11 / IH≤0.65. This defines the shape of the first lens, which, within the range of the condition, is beneficial for lens processing and assembly.

[0066] The object-side surface and the image-side surface of the first lens L1 are both convex near the axis, and the first lens L1 has positive refractive power. The object-side surface and the image-side surface of the first lens L1 can also be configured with other concave and convex distributions.

[0067] The focal length f of the camera optical lens and the focal length f1 of the first lens L1 satisfy the following relationship: 0.18 ≤ f1 / f ≤ 0.65, 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 and wide-angle lenses. Preferably, it satisfies 0.29 ≤ f1 / f ≤ 0.52.

[0068] The object-side radius of curvature of the first lens L1 at the paraxial position is R1, and the image-side radius of curvature of the first lens L1 at the paraxial position is R2, satisfying the following relationship: -1.44 ≤ (R1 + R2) / (R1 - R2) ≤ -0.42. By reasonably controlling the shape of the first lens L1, it can effectively correct system spherical aberration. Preferably, it satisfies -0.90 ≤ (R1 + R2) / (R1 - R2) ≤ -0.52.

[0069] The first lens L1 has an on-axis thickness of d1, and the total optical length of the imaging optical lens is TTL, satisfying the following relationship: 0.08 ≤ d1 / TTL ≤ 0.32. Within this range, miniaturization is advantageous. Preferably, 0.13 ≤ d1 / TTL ≤ 0.26 is satisfied.

[0070] The object-side surface of the second lens L2 is convex near the axis, and the image-side surface is concave near the axis. The second lens L2 has negative refractive power. The object-side and image-side surfaces of the second lens L2 can also be configured with other concave and convex distributions.

[0071] The focal length of the second lens L2 is f2, satisfying the following relationship: -1.89 ≤ f2 / f ≤ -0.49. By controlling the negative optical power of the second lens L2 within a reasonable range, it is beneficial to correct the aberrations of the optical system. Preferably, it satisfies -1.18 ≤ f2 / f ≤ -0.62.

[0072] The object-side radius of curvature of the second lens L2 at the paraxial position is R3, and the image-side radius of curvature of the second lens L2 at the paraxial position is R4, satisfying the following relationship: 0.75≤(R3+R4) / (R3-R4)≤5.28. This defines the shape of the second lens L2. Within this range, with the development of ultra-thin wide-angle lenses, it is beneficial for correcting problems such as on-axis chromatic aberration. Preferably, it satisfies 1.20≤(R3+R4) / (R3-R4)≤4.22.

[0073] The second lens L2 has an on-axis thickness of d3, and the total optical length of the camera lens is TTL, satisfying the following relationship: 0.02≤d3 / TTL≤0.10. Within this range, miniaturization is advantageous. Preferably, 0.03≤d3 / TTL≤0.08 is satisfied.

[0074] The object-side surface of the third lens L3 is concave near the axis, and the image-side surface is also 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 or convex distributions.

[0075] The focal length of the camera optical lens is f, and the focal length of the third lens L3 is f3, satisfying the following relationship: -2.84 ≤ f3 / f ≤ -0.35. Through reasonable allocation of optical power, the system has better imaging quality and lower sensitivity. Preferably, it satisfies -1.77 ≤ f3 / f ≤ -0.44.

[0076] 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: 0.01≤d5 / TTL≤0.06. Within this range, miniaturization is advantageous. Preferably, 0.02≤d5 / TTL≤0.05 is satisfied.

[0077] The object-side surface of the fourth lens L4 is concave near the axis, while the image-side surface is convex near the axis. The fourth lens L4 has positive refractive power. The object-side and image-side surfaces of the fourth lens L4 can also be configured with other concave and convex distributions.

[0078] The focal length of the camera optical lens is f, and the focal length of the fourth lens L4 is f4, satisfying the following relationship: 0.53≤f4 / f≤2.26. Through reasonable allocation of optical power, the system has better imaging quality and lower sensitivity. Preferably, it satisfies 0.85≤f4 / f≤1.81.

[0079] The fourth lens L4 has a central radius of curvature of R7 on its object-side surface and R8 on its image-side surface, satisfying the following relationship: 1.30 ≤ (R7 + R8) / (R7 - R8) ≤ 10.54. This defines the shape of the fourth lens L4. Within this condition, with the development of ultra-thin wide-angle lenses, it is beneficial for correcting aberrations in off-axis drawing angles. Preferably, it satisfies 2.08 ≤ (R7 + R8) / (R7 - R8) ≤ 8.43.

[0080] The fourth lens L4 has an on-axis thickness of d7, and the total optical length of the camera lens is TTL, satisfying the following relationship: 0.04≤d7 / TTL≤0.14. Within this range, miniaturization is advantageous. Preferably, 0.06≤d7 / TTL≤0.11 is satisfied.

[0081] 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 negative refractive power. The object-side and image-side surfaces of the fifth lens L5 can also be configured with other concave and convex distributions.

[0082] The focal length of the camera optical lens is f, and the focal length of the fifth lens L5 is f5, satisfying the following relationship: -5.46≤f5 / f≤-0.73. By limiting the fifth lens L5, the light angle of the camera optical lens can be effectively made smoother, reducing tolerance sensitivity. Preferably, -3.42≤f5 / f≤-0.91 is satisfied.

[0083] The central radius of curvature of the object-side surface of the fifth lens L5 at the paraxial position is R9, and the central radius of curvature of the image-side surface of the fifth lens L5 at the paraxial position is R10, satisfying the following relationship: -16.50≤(R9+R10) / (R9-R10)≤-2.05. This defines the shape of the fifth lens L5. Within this range, with the development of ultra-thin wide-angle lenses, it is beneficial for correcting aberrations and other problems at off-axis drawing angles. Preferably, it satisfies -10.31≤(R9+R10) / (R9-R10)≤-2.56.

[0084] The fifth lens L5 has an on-axis thickness of d9, and the total optical length of the camera lens is TTL, satisfying the following relationship: 0.03≤d9 / TTL≤0.20. Within this range, miniaturization is advantageous. Preferably, 0.05≤d9 / TTL≤0.16 is satisfied.

[0085] The focal length of the camera optical lens is f, and the field of view of the camera optical lens in a 1.0 field of view is FOV, which satisfies the following relationship: f / FOV≥8.10. Within the range of the condition, it is beneficial to achieve wide-angle.

[0086] The aperture value FNO of the camera optical lens is less than or equal to 2.40, thereby achieving a large aperture and good imaging performance.

[0087] 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, and on-axis thickness are mm.

[0088] TTL: Total optical length (axial distance from the object surface of the first lens L1 to the image plane Si), in mm;

[0089] Aperture value FNO: refers to the ratio of the effective focal length to the entrance pupil diameter of a camera lens.

[0090] The technical solution of the present invention will be described in detail below with five implementation methods.

[0091] (First Implementation)

[0092] Tables 1 and 2 show the design data of the camera optical lens 10 according to the first embodiment of the present invention.

[0093] Table 1

[0094]

[0095] The meanings of each symbol are as follows.

[0096] S1: Aperture;

[0097] R: Radius of curvature at the center of the optical surface;

[0098] R1: The central radius of curvature of the object side surface of the first lens L1 at the paraxial position;

[0099] R2: The central radius of curvature of the image-side surface of the first lens L1 at the paraxial position;

[0100] R3: The central radius of curvature of the object side surface of the second lens L2 at the paraxial position;

[0101] R4: The central radius of curvature of the image-side surface of the second lens L2 at the paraxial position;

[0102] R5: The central radius of curvature of the object side surface of the third lens L3 at the paraxial position;

[0103] R6: The central radius of curvature of the image-side surface of the third lens L3 at the paraxial position;

[0104] R7: The central radius of curvature of the object side surface of the fourth lens L4 at the paraxial position;

[0105] R8: The central radius of curvature of the image-side surface of the fourth lens L4 at the paraxial position;

[0106] R9: The central radius of curvature of the object side surface of the fifth lens L5 at the paraxial position;

[0107] R10: The central radius of curvature of the image-side surface of the fifth lens L5 at the paraxial position;

[0108] R11: The radius of curvature of the center of the object side of the optical filter GF at the paraxial position;

[0109] R12: The central radius of curvature of the image-side surface of the optical filter GF at the paraxial position;

[0110] d: Axial thickness of the lens, axial distance between lenses;

[0111] d0: The on-axis distance from aperture S1 to the object-side surface of the first lens L1;

[0112] d1: On-axis thickness of the first lens L1;

[0113] 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;

[0114] d3: On-axis thickness of the second lens L2;

[0115] d4: The axial distance from the image-side surface of the second lens L2 to the object-side surface of the third lens L3;

[0116] d5: On-axis thickness of the third lens L3;

[0117] 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;

[0118] d7: On-axis thickness of the fourth lens L4;

[0119] 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;

[0120] d9: On-axis thickness of the fifth lens L5;

[0121] d10: The on-axis distance from the image-side surface of the fifth lens L5 to the object-side surface of the optical filter GF;

[0122] d11: On-axis thickness of the optical filter GF;

[0123] d12: The axial distance from the image-side surface of the optical filter GF to the image plane Si;

[0124] nd: Refractive index of the d-line (the d-line represents green light with a wavelength of 550 nm);

[0125] nd1: The refractive index of the d-line of the first lens L1;

[0126] nd2: The refractive index of the d-line of the second lens L2;

[0127] nd3: The refractive index of the d-line of the third lens L3;

[0128] nd4: The refractive index of the d-line of the fourth lens L4;

[0129] nd5: The refractive index of the d-line of the fifth lens L5;

[0130] ndg: The refractive index of the d-line of the optical filter GF;

[0131] vd: Abbe number;

[0132] v1: Abbe number of the first lens L1;

[0133] v2: Abbe number of the second lens L2;

[0134] v3: Abbe number of the third lens L3;

[0135] v4: Abbe number of the fourth lens L4;

[0136] v5: Abbe number of the fifth lens L5;

[0137] vg: Abbe number of the optical filter GF.

[0138] Table 2 shows the aspherical data of each lens in the camera optical lens 10 of the first embodiment of the present invention.

[0139] Table 2

[0140]

[0141]

[0142] 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).

[0143] z=(cr 2 ) / {1+[1-(k+1)(c 2 r 2 )] 1 / 2}+A4r 4 +A6r 6 +A8r 8 +A10r 10 +A12r12 +A14r 14 +A16r 16 +A18r 18 +A20r 20 +A22r 22 +A24r 24 (1)

[0144] Where k is the conic coefficient, A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, and A24 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).

[0145] Figure 2 , Figure 3 A schematic diagrams of axial aberration and magnification chromatic aberration after light with wavelengths of 650nm, 610nm, 555nm, 510nm and 470nm passes through the camera optical lens 10 of the first embodiment are shown respectively. 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.

[0146] In this embodiment, the entrance pupil diameter (ENPD) of the camera optical lens 10 is 3.290 mm, the image height (IH) in the full field of view (1.0 field of view) is 2.560 mm, and the field of view (FOV) in the diagonal direction of the full field of view (1.0 field of view) is 35.06°. The camera optical lens 10 meets the design requirements of large aperture, telephoto lens, and ultra-thin design, and its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0147] It is understandable that the 1.0 field of view image height refers to half the diagonal length of the effective pixel area of ​​the sensor; the FOV in the diagonal direction of the 1.0 field of view refers to the field of view angle corresponding to the effective pixel area of ​​the sensor.

[0148] (Second Implementation)

[0149] The symbols in the second embodiment have the same meanings as those in the first embodiment.

[0150] Figure 5 The image shows the camera optical lens 20 according to the second embodiment of the present invention.

[0151] Tables 3 and 4 show the design data of the camera optical lens 20 according to the second embodiment of the present invention.

[0152] Table 3

[0153]

[0154] Table 4 shows the aspherical data of each lens in the camera optical lens 20 of the second embodiment of the present invention.

[0155] Table 4

[0156]

[0157]

[0158] 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.

[0159] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 20 is 3.290mm, the image height IH of the full field of view (1.0 field of view) is 2.560mm, and the field of view (FOV) of the full field of view (1.0 field of view) diagonal direction is 35.11°. The camera optical lens 20 meets the design requirements of large aperture, telephoto, and ultra-thin design. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0160] (Third Implementation)

[0161] The symbols in the third embodiment have the same meanings as those in the first embodiment.

[0162] Figure 9 The image shown is the camera optical lens 30 according to the third embodiment of the present invention.

[0163] Tables 5 and 6 show the design data of the camera optical lens 30 according to the third embodiment of the present invention.

[0164] Table 5

[0165]

[0166]

[0167] Table 6 shows the aspherical data of each lens in the camera optical lens 30 of the third embodiment of the present invention.

[0168] Table 6

[0169]

[0170] 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.

[0171] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 30 is 3.290mm, the image height IH of the full field of view (1.0 field of view) is 2.560mm, and the field of view (FOV) of the full field of view (1.0 field of view) diagonal direction is 34.88°. The camera optical lens 30 meets the design requirements of large aperture, telephoto, and ultra-thin design. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0172] (Fourth Implementation)

[0173] The symbols in the fourth embodiment have the same meanings as those in the first embodiment.

[0174] Figure 13 The image shown is the camera optical lens 40 according to the fourth embodiment of the present invention.

[0175] Tables 7 and 8 show the design data of the camera optical lens 40 according to the fourth embodiment of the present invention.

[0176] Table 7

[0177]

[0178] Table 8 shows the aspherical data of each lens in the camera optical lens 40 of the fourth embodiment of the present invention.

[0179] Table 8

[0180]

[0181]

[0182] Figure 14 , Figure 15 A schematic diagrams of 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 40 of the fourth embodiment. Figure 16This shows a schematic diagram of field curvature and distortion after light with a wavelength of 555nm passes through the camera optical lens 40 of the fourth embodiment. Figure 16 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0183] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 40 is 3.306 mm, the image height IH in the full field of view (1.0 field of view) is 2.560 mm, and the field of view (FOV) in the diagonal direction of the full field of view (1.0 field of view) is 34.92°. The camera optical lens 40 meets the design requirements of large aperture, telephoto, and ultra-thin design. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0184] (Fifth Implementation)

[0185] The symbols in the fifth embodiment have the same meanings as those in the first embodiment.

[0186] Figure 17 The image shown is a camera optical lens 50 according to the fifth embodiment of the present invention.

[0187] Tables 9 and 10 show the design data of the camera optical lens 50 according to the fifth embodiment of the present invention.

[0188] Table 9

[0189]

[0190] Table 10 shows the aspherical data of each lens in the camera optical lens 50 of the fifth embodiment of the present invention.

[0191] Table 10

[0192]

[0193]

[0194] Figure 18 , Figure 19 A schematic diagrams of axial aberration and magnification chromatic aberration after light with wavelengths of 650nm, 610nm, 555nm, 510nm and 470nm passes through the camera optical lens 50 of the fifth embodiment are shown respectively. Figure 20 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 555nm passes through the camera optical lens 50 of the fifth embodiment. Figure 20 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0195] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 50 is 3.290mm, the image height IH in the full field of view (1.0 field of view) is 2.559mm, and the field of view (FOV) in the diagonal direction of the full field of view (1.0 field of view) is 35.01°. The camera optical lens 50 meets the design requirements of large aperture, telephoto, and ultra-thin design. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0196] Table 11

[0197]

[0198]

[0199] 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 five 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 negative refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, and a fifth lens with negative refractive power. Wherein, the axial distance from the image-side surface of the third lens to the object-side surface of the fourth lens is d6, the total optical length of the imaging optical lens is TTL, the focal length of the first lens is f1, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the central radius of curvature of the object-side surface of the third lens at the paraxial position is R5, the central radius of curvature of the image-side surface of the third lens at the paraxial position is R6, the central radius of curvature of the object-side surface of the fifth lens at the paraxial position is R9, the central radius of curvature of the image-side surface of the fifth lens at the paraxial position is R10, the focal length of the imaging optical lens is f, the effective radius of the object-side surface of the first lens is SD11, the axial distance between the intersection of the object-side surface of the first lens and the optical axis and the vertex of the effective radius of the object-side surface of the first lens is SAG11, and the image height of the imaging optical lens in a 1.0 field of view is IH, and satisfies the following relationship: 0.20≤d6 / TTL≤0.36; 6.00≤(f4-f5) / f1≤10.10; -1.00≤(R5+R6) / (R5-R6)≤-0.70; -0.80≤(R9+R10) / f≤-0.39; 0.39≤SD11*SAG11 / IH≤0.

65.

2. The camera optical lens according to claim 1, characterized in that, The first lens has an on-axis thickness of d1, the second lens has an on-axis thickness of d3, and the third lens has an on-axis thickness of d5, satisfying the following relationship: 1.50≤d1 / (d3+d5)≤3.

50.

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 convex at the paraxial position. The object-side surface of the first lens has a central radius of curvature R1 at the paraxial position, the image-side surface of the first lens has a central radius of curvature R2 at the paraxial position, and the axial thickness of the first lens is d1, satisfying the following relationship: 0.18≤f1 / f≤0.65; -1.44≤(R1+R2) / (R1-R2)≤-0.42; 0.08≤d1 / TTL≤0.

32.

4. The camera optical lens according to claim 1, characterized in that, The object-side surface of the second lens is convex at the paraxial position, and the image-side surface of the second lens is concave at the paraxial position. The focal length of the second lens is f2, the central radius of curvature of the object-side surface of the second lens at the paraxial position is R3, the central radius of curvature of the image-side surface of the second lens at the paraxial position is R4, and the on-axis thickness of the second lens is d3, and the following relationship is satisfied: -1.89≤f² / f≤-0.49; 0.75≤(R3+R4) / (R3-R4)≤5.28; 0.02≤d3 / TTL≤0.

10.

5. The camera optical lens according to claim 1, characterized in that, The object-side surface of the third lens is concave at the paraxial position, and the image-side surface of the third lens is concave at the paraxial position. The third lens has a focal length of f3 and an on-axis thickness of d5, and satisfies the following relationship: -2.84≤f3 / f≤-0.35; 0.01≤d5 / TTL≤0.

06.

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 paraxial radius of curvature of R7 on its object-side surface and R8 on its image-side surface. The fourth lens has an axial thickness of d7 and satisfies the following relationship: 0.53≤f4 / f≤2.26; 1.30≤(R7+R8) / (R7-R8)≤10.54; 0.04≤d7 / TTL≤0.

14.

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; the image-side surface of the fifth lens is convex near the axis. The fifth lens has an on-axis thickness of d9 and satisfies the following relationship: -5.46≤f5 / f≤-0.73; -16.50≤(R9+R10) / (R9-R10)≤-2.05; 0.03≤d9 / TTL≤0.

20.

8. The camera optical lens according to claim 1, characterized in that, The field of view (FOV) of the camera optical lens in a 1.0 field of view is FOV, and satisfies the following relationship: f / FOV≥8.

10.

9. The camera optical lens according to claim 1, characterized in that, The aperture value of the camera optical lens is FNO, and it satisfies: FNO≤2.40.

Images