Camera lens

Abstract

This invention relates to the field of optical lenses and discloses a camera optical lens, which comprises, from the object side to the image side, the following components in sequence: 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 positive refractive power, and a fifth lens with refractive power; the first lens is made of glass, and at least one of the second, third, fourth, and fifth lenses is made of glass; the operating temperature range of the camera optical lens is between -40 degrees Celsius and 105 degrees Celsius; wherein the focal length of the camera optical lens is f, the total optical length of the camera optical lens is TTL, the refractive index of the first lens is n1, the central radius of curvature of the object side of the second lens is R3, and the central radius of curvature of the image side of the second lens is R4, and the following relationships are satisfied: 1.50≤TTL / f≤4.00; 1.70≤n1≤2.20; R3 / R4≤-2.00.

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, small size, and adequate aberration correction. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to provide a camera optical lens that, while possessing excellent optical performance, meets the design requirements of a large aperture, long focal length, and low distortion.

[0004] To solve the above-mentioned technical problems, embodiments of the present invention provide a camera optical lens, characterized in that the camera optical lens, from the object side to the image side, sequentially comprises: 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 positive refractive power, and a fifth lens with refractive power; the first lens is made of glass, and at least one of the second, third, fourth, and fifth lenses is made of glass; the operating temperature range of the camera optical lens is between -40 degrees Celsius and 105 degrees Celsius; wherein the focal length of the camera optical lens is f, the total optical length of the camera optical lens is TTL, the refractive index of the first lens is n1, the central radius of curvature of the object side of the second lens is R3, and the central radius of curvature of the image side of the second lens is R4, and satisfies the following relationships: 1.50≤TTL / f≤4.00; 1.70≤n1≤2.20; R3 / R4≤-2.00.

[0005] Preferably, the refractive index of the fourth lens is n4, and satisfies the following relationship: 1.70≤n4≤2.20.

[0006] Preferably, the central radius of curvature of the object side of the fifth lens is R9, and the central radius of curvature of the image side of the fifth lens is R10, and the following relationship is satisfied: (R9+R10) / (R9-R10)≥1.50.

[0007] 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: 5.00≤|f3 / d5|≤10.00.

[0008] Preferably, the operating wavelength of the camera optical lens is between 905 nanometers and 975 nanometers.

[0009] Preferably, the focal length of the first lens is f1, the central radius of curvature of the object side of the first lens is R1, the central radius of curvature of the image side of the first lens is R2, and the axial thickness of the first lens is d1, and the following relationships are satisfied: 0.63≤f1 / f≤20.19; -7.72≤(R1+R2) / (R1-R2)≤44.20; 0.05≤d1 / TTL≤0.38.

[0010] Preferably, the object-side surface of the second lens is convex near the axis, and the image-side surface of the second lens is convex near the axis; the focal length of the second lens is f2, and the on-axis thickness of the second lens is d3, and the following relationships are satisfied: 0.64≤f2 / f≤4.33; 0.02≤d3 / TTL≤0.11.

[0011] Preferably, the object-side surface of the third lens is concave near the axis, and the image-side surface of the third lens is convex 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 the following relationships are satisfied: -2.72≤f3 / f≤-0.55; -5.60≤(R5+R6) / (R5-R6)≤0; 0.02≤d5 / TTL≤0.13.

[0012] Preferably, 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 satisfies the following relationships: 0.29≤f4 / f≤3.34; 0.13≤(R7+R8) / (R7-R8)≤4.78; 0.06≤d7 / TTL≤0.32.

[0013] Preferably, the object-side surface of the fifth lens is convex near the axis, and the image-side surface of the fifth lens is concave near the axis; the focal length of the fifth lens is f5, and the on-axis thickness of the fifth lens is d9, and the following relationships are satisfied: -2.11≤f5 / f≤8.85; 0.02≤d9 / TTL≤0.19.

[0014] The beneficial effects of the present invention are as follows: the camera optical lens according to the present invention has excellent optical characteristics, and has the characteristics of large aperture, wide angle and ultra-thinness, and is especially suitable for vehicle 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:

[0016] Figure 1 This is a schematic diagram of the structure of the camera optical lens according to the first embodiment of the present invention;

[0017] Figure 2 yes Figure 1 A schematic diagram of axial aberrations of the camera optical lens shown;

[0018] Figure 3 yes Figure 1 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0019] Figure 4 yes Figure 1 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0020] Figure 5 This is a schematic diagram of the structure of the camera optical lens according to the second embodiment of the present invention;

[0021] Figure 6 yes Figure 5 A schematic diagram of axial aberrations of the camera optical lens shown;

[0022] Figure 7 yes Figure 5 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0023] Figure 8 yes Figure 5 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0024] Figure 9This is a schematic diagram of the structure of the camera optical lens according to the third embodiment of the present invention;

[0025] Figure 10 yes Figure 9 A schematic diagram of axial aberrations of the camera optical lens shown;

[0026] Figure 11 yes Figure 9 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0027] Figure 12 yes Figure 9 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0028] Figure 13 This is a schematic diagram of the structure of the camera optical lens according to the fourth embodiment of the present invention;

[0029] Figure 14 yes Figure 13 A schematic diagram of axial aberrations of the camera optical lens shown;

[0030] Figure 15 yes Figure 13 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0031] Figure 16 yes Figure 13 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0032] Figure 17 This is a schematic diagram of the structure of the camera optical lens in the comparative embodiment;

[0033] Figure 18 yes Figure 17 A schematic diagram of axial aberrations of the camera optical lens shown;

[0034] Figure 19 Figure 17 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0035] Figure 20 yes Figure 17 The diagram shows the field curvature and distortion of the camera lens. Detailed Implementation

[0036] 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.

[0037] (First Implementation)

[0038] Referring to the accompanying drawings, the present invention provides a camera optical lens 10. Figure 1 The image shown is a camera optical lens 10 according to a first embodiment of the present invention. The camera optical lens 10 comprises five lenses. Specifically, the camera optical lens 10, from the object side to the image side, consists of: a first lens L1, an aperture S1, a second lens L2, a third lens L3, a fourth lens L4, and a fifth lens L5. An optical element such as an optical filter GF can be disposed between the fifth lens L5 and the image plane S1. In this embodiment, two filters are included: GF1 and GF2.

[0039] In this embodiment, the first lens L1 is made of glass, the second lens L2 is made of plastic, the third lens L3 is made of plastic, the fourth lens L4 is made of glass, and the fifth lens L5 is made of plastic. Appropriately selecting glass lenses can improve the optical performance of the camera lens and ensure stable operation of the system under extremely cold and hot temperatures, guaranteeing excellent image quality. The operating temperature range is between -40 degrees Celsius and 105 degrees Celsius. In other optional embodiments, the lenses can be made of other materials.

[0040] The object-side and image-side surfaces of the first lens L1 and the fourth lens L4 are spherical, while the remaining lenses are aspherical lenses. Designing some lenses with spherical surfaces can reduce manufacturing difficulty. The operating wavelength of the camera optical lens 10 is between 905 nanometers and 975 nanometers.

[0041] The focal length of the camera optical lens 10 is defined as f, and the total optical length of the camera optical lens 10 is TTL, satisfying the following relationship: 1.50≤TTL / f≤4.00. This specifies the ratio of the total optical length to the focal length of the camera optical lens 10. Within the range of the condition, the total length of the camera optical lens can be effectively controlled while correcting aberrations to ensure imaging quality.

[0042] The refractive index of the first lens is defined as n1, which satisfies the following relationship: 1.70≤n1≤2.20. This specifies the range of the refractive index of the first lens. A system that meets this condition can effectively correct chromatic aberration, so that the chromatic aberration satisfies |LC|≤1.2μm.

[0043] The center radius of curvature of the object side of the second lens L2 is defined as R3, and the center radius of curvature of the image side of the second lens L2 is defined as R4, satisfying the following relationship: R3 / R4≤-2.00. This defines the shape of the second lens. Within this range, it is beneficial to mitigate the degree of light deflection after passing through the lens and reduce the sensitivity of the camera optical lens.

[0044] The refractive index of the fourth lens is defined as n4, satisfying the following relationship: 1.70≤n4≤2.20. This defines the range of the refractive index of the fourth lens, within which chromatic aberration can be effectively corrected.

[0045] The center radius of curvature of the object side of the fifth lens L5 is defined as R9, and the center radius of curvature of the image side of the fifth lens L5 is defined as R10, and the following relationship is satisfied: (R9+R10) / (R9-R10)≥1.50, which specifies the shape of the fifth lens. Within this range, it is beneficial to correct the astigmatism and distortion of the camera lens, so that the distortion|Distortion|≤6%, and reduce the possibility of vignetting.

[0046] The focal length of the third lens L3 is defined as f3, and the on-axis thickness of the third lens L3 is d5, satisfying the following relationship: 5.00≤|f3 / d5|≤10.00. This specifies the absolute value of the ratio of the focal length of the third lens to the center thickness of the third lens. Within this range, it is beneficial to achieve ultra-thinness.

[0047] In this embodiment, the object-side surface of the first lens L1 is convex near the axis, and the image-side surface is concave near the axis, thus the first lens L1 has positive refractive power. In other optional embodiments, the object-side surface and image-side surface of the first lens L1 may also be configured with other concave and convex distributions.

[0048] The focal length of the first lens L1 is defined as f1, satisfying the following relationship: 0.63≤f1 / f≤20.19. This specifies the ratio of the focal length f1 of the first lens L1 to the focal length of the camera optical lens 10. Within this range, it helps to achieve an ultra-wide-angle lens. Preferably, it satisfies 1.01≤f1 / f≤16.15.

[0049] The center radius of curvature of the object-side surface of the first lens L1 is defined as R1, and the center radius of curvature of the image-side surface of the first lens L2 is defined as R2, satisfying the following relationship: -7.72≤(R1+R2) / (R1-R2)≤44.20, which defines the shape of the first lens L1. Within this range, it helps to achieve an ultra-wide-angle lens. Preferably, it satisfies -4.82≤(R1+R2) / (R1-R2)≤35.36.

[0050] The on-axis thickness of the first lens L1 is d1, and the total optical length of the imaging optical lens 10 is TTL, satisfying the following relationship: 0.05≤d1 / TTL≤0.38. Within the range of the condition, it is beneficial to achieve miniaturization. Preferably, it satisfies 0.08≤d1 / TTL≤0.30.

[0051] In this embodiment, the object-side surface of the second lens L2 is convex near the axis, and the image-side surface is also convex near the axis, thus the second lens L2 has positive refractive power. In other optional embodiments, the object-side surface and image-side surface of the second lens L2 may also be configured with other concave and convex distributions.

[0052] In this embodiment, the focal length of the imaging optical lens 10 is defined as f, and the focal length of the second lens L2 is defined as f2, satisfying the following relationship: 0.64 ≤ f2 / f ≤ 4.33. This specifies the ratio of the focal length f2 of the second lens L2 to the focal length of the imaging optical lens 10. Within this range, the field curvature of the system can be effectively balanced. Preferably, it satisfies 1.03 ≤ f2 / f ≤ 3.47.

[0053] The second lens L2 has an on-axis thickness of d3, and the total optical length of the imaging optical lens 10 is TTL, satisfying the following relationship: 0.02≤d3 / TTL≤0.11. Within this range, miniaturization is facilitated. Preferably, 0.04≤d3 / TTL≤0.09 is satisfied.

[0054] In this embodiment, the object-side surface of the third lens L3 is concave near the axis, and the image-side surface is convex 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.

[0055] The focal length of the camera optical lens 10 is defined as f, and the focal length of the third lens L3 is defined as f3, satisfying the following relationship: -2.72 ≤ f3 / f ≤ -0.55. Through reasonable allocation of optical power, the system has better imaging quality and lower sensitivity. Preferably, -1.70 ≤ f3 / f ≤ -0.68 is satisfied.

[0056] The central radius of curvature of the object-side surface of the third lens L3 is R5, and the central radius of curvature of the image-side surface of the third lens L3 is R6, satisfying the following relationship: -5.60≤(R5+R6) / (R5-R6)≤0. This defines the shape of the third lens L3. Within this range, the degree of light refraction can be reduced, effectively correcting chromatic aberration. Preferably, it satisfies -3.50≤(R5+R6) / (R5-R6)≤0.

[0057] The on-axis thickness of the third lens L3 is d5, and the total optical length of the imaging optical lens 10 is TTL, satisfying the following relationship: 0.02≤d5 / TTL≤0.13. Within this range, miniaturization is advantageous. Preferably, 0.03≤d5 / TTL≤0.10 is satisfied.

[0058] In this embodiment, the object-side surface of the fourth lens L4 is concave near the axis, and the image-side surface is convex near the axis, thus 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.

[0059] The focal length of the camera optical lens 10 is defined as f, and the focal length of the fourth lens L4 is defined as f4, satisfying the following relationship: 0.29 ≤ f4 / f ≤ 3.34. Through reasonable allocation of optical power, the system has better imaging quality and lower sensitivity. Preferably, it satisfies 0.46 ≤ f4 / f ≤ 2.67.

[0060] The center radius of curvature of the object-side surface of the fourth lens L4 is defined as R7, and the center radius of curvature of the image-side surface of the fourth lens L4 is defined as R8, satisfying the following relationship: 0.13≤(R7+R8) / (R7-R8)≤4.78. This defines the shape of the fourth lens. Within this range, it is beneficial to correct the astigmatism and distortion of the camera optical lens 10, making the distortion |Distortion|≤35.0% and reducing the possibility of vignetting. Preferably, it satisfies 0.20≤(R7+R8) / (R7-R8)≤3.82.

[0061] The fourth lens L4 has an on-axis thickness of d7, and the total optical length of the imaging optical lens 10 is TTL, satisfying the following relationship: 0.06≤d7 / TTL≤0.32. Within this range, miniaturization is advantageous. Preferably, 0.10≤d7 / TTL≤0.26 is satisfied.

[0062] In this embodiment, the object-side surface of the fifth lens L5 is convex near the axis, and the 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 can also be configured with other concave and convex distributions, and the fifth lens can also have negative refractive power.

[0063] The focal length of the camera optical lens 10 is defined as f, and the focal length of the fifth lens L5 is defined as f5, satisfying the following relationship: -2.11 ≤ f5 / f ≤ 8.85. Limiting the fifth lens L5 effectively makes the light angle of the camera optical lens 10 smoother and reduces tolerance sensitivity. Preferably, it satisfies -1.32 ≤ f5 / f ≤ 7.08.

[0064] The fifth lens L5 has an on-axis thickness of d9, and the total optical length of the imaging optical lens 10 is TTL, satisfying the following relationship: 0.02≤d9 / TTL≤0.19. Within this range, miniaturization is advantageous. Preferably, 0.04≤d9 / TTL≤0.15 is satisfied.

[0065] In this embodiment, the field of view (FOV) along the diagonal direction of the camera optical lens 10 is defined as FOV, satisfying the following relationship: FOV ≥ 65.00°, which is beneficial for achieving a wide-angle view. Preferably, FOV ≥ 66.00° is satisfied.

[0066] In this embodiment, the image height of the camera optical lens 10 is IH, the total optical length of the camera optical lens 10 is TTL, and it satisfies the following relationship: TTL / IH≤5.60, which is beneficial for miniaturization. Preferably, TTL / IH≤5.40 is satisfied.

[0067] In this embodiment, the aperture value FNO of the camera optical lens 10 is less than or equal to 2.27, thereby achieving a large aperture and good imaging performance. Preferably, the aperture value FNO of the camera optical lens 10 is less than or equal to 2.22.

[0068] The camera optical lens 10 has good optical performance while meeting the design requirements of large aperture, wide angle and ultra-thin design. Based on the characteristics of the camera optical lens 10, it is particularly suitable for automotive lenses, mobile phone camera lens assemblies and WEB camera lenses composed of high-pixel CCD, CMOS and other camera elements.

[0069] The camera optical lens 10 of the present invention will be described below with examples. The symbols described in each example are as follows. The units for focal length, on-axis distance, center radius of curvature, on-axis thickness, inversion point position, and stagnation point position are mm.

[0070] TTL: Total optical length (axial distance from the object surface of the first lens L1 to the image plane Si), in mm;

[0071] Aperture value FNO: refers to the ratio of the effective focal length to the entrance pupil diameter of a camera lens.

[0072] Preferably, the object-side and / or image-side surfaces of the lens may also be provided with inflection points and / or stagnation points to meet the requirements of high-quality imaging. Specific possible implementation schemes are described below.

[0073] Tables 1 and 2 show the design data of the camera optical lens 10 according to the first embodiment of the present invention.

[0074] Table 1

[0075]

[0076] The meanings of each symbol are as follows.

[0077] S1: Aperture;

[0078] R: Radius of curvature at the center of the optical surface;

[0079] R1: The central radius of curvature of the object-side surface of the first lens L1;

[0080] R2: The central radius of curvature of the image-side surface of the first lens L1;

[0081] R3: The central radius of curvature of the object-side surface of the second lens L2;

[0082] R4: The central radius of curvature of the image-side surface of the second lens L2;

[0083] R5: The central radius of curvature of the object-side surface of the third lens L3;

[0084] R6: The central radius of curvature of the image-side surface of the third lens L3;

[0085] R7: The central radius of curvature of the object side surface of the fourth lens L4;

[0086] R8: The central radius of curvature of the image-side surface of the fourth lens L4;

[0087] R9: The central radius of curvature of the object-side surface of the fifth lens L5;

[0088] R10: The central radius of curvature of the image-side surface of the fifth lens L5;

[0089] R11: The center radius of curvature of the object side surface of the optical filter GF1;

[0090] R12: The center radius of curvature of the image side of the optical filter GF1;

[0091] R13: The center radius of curvature of the object side surface of the optical filter GF2;

[0092] R14: Radius of curvature of the center of the image side of the optical filter GF2;

[0093] d: Axial thickness of the lens, axial distance between lenses;

[0094] d0: The on-axis distance from aperture S1 to the object-side surface of the first lens L1;

[0095] d1: On-axis thickness of the first lens L1;

[0096] 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;

[0097] d3: On-axis thickness of the second lens L2;

[0098] d4: The axial distance from the image-side surface of the second lens L2 to the object-side surface of the third lens L3;

[0099] d5: On-axis thickness of the third lens L3;

[0100] 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;

[0101] d7: On-axis thickness of the fourth lens L4;

[0102] 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;

[0103] d9: On-axis thickness of the fifth lens L5;

[0104] 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;

[0105] d11: On-axis thickness of optical filter GF1;

[0106] d12: The distance from the image-side surface of optical filter GF1 to the on-axis distance of optical filter GF2;

[0107] d13: On-axis thickness of optical filter GF2;

[0108] d14: The axial distance from the image-side surface of the optical filter GF2 to the image plane Si;

[0109] nd: Refractive index of the d-line (the d-line represents green light with a wavelength of 550 nm);

[0110] nd1: The refractive index of the d-line of the first lens L1;

[0111] nd2: The refractive index of the d-line of the second lens L2;

[0112] nd3: The refractive index of the d-line of the third lens L3;

[0113] nd4: The refractive index of the d-line of the fourth lens L4;

[0114] nd5: The refractive index of the d-line of the fifth lens L5;

[0115] ndg1: The refractive index of the d-line of the optical filter GF1;

[0116] ndg2: The refractive index of the d-line of the optical filter GF2;

[0117] vd: Abbe number;

[0118] v1: Abbe number of the first lens L1;

[0119] v2: Abbe number of the second lens L2;

[0120] v3: Abbe number of the third lens L3;

[0121] v4: Abbe number of the fourth lens L4;

[0122] v5: Abbe number of the fifth lens L5;

[0123] vg1: Abbe number of optical filter GF1;

[0124] vg2: Abbe number of optical filter GF2.

[0125] Table 2 shows the aspherical data of each lens in the camera optical lens 10 of the first embodiment of the present invention.

[0126] Table 2

[0127]

[0128]

[0129] 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).

[0130] z=(cr 2 ) / {1+[1-(k+1)(c 2 r 2 )] 1 / 2}+A4r 4 +A6r 6 +A8r 8 +A10r 10 +A12r 12 +A14r 14 +A

[0131] 16r 16 +A18r 18 +A20r 20 (1)

[0132] 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).

[0133] 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; and P5R1 and P5R2 represent the object-side and image-side surfaces of the fifth lens L5, 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.

[0134] Table 3

[0135]

[0136]

[0137] Table 4

[0138] Number of outposts Location 1 P1R1 0 / P1R2 0 / P2R1 1 0.475 P2R2 0 / P3R1 0 / P3R2 1 1.085 P4R1 0 / P4R2 0 / P5R1 1 0.935 P5R2 1 1.105

[0139] Figure 2 , Figure 3 Axial aberration and magnification chromatic aberration are shown respectively after light with wavelengths of 905nm, 940nm and 975nm 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 905nm 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.

[0140] Table 21, which appears later, shows the values ​​corresponding to various numerical values ​​and parameters specified in the conditional expressions in each embodiment.

[0141] As shown in Table 21, the first embodiment satisfies all the conditional expressions.

[0142] In this embodiment, the entrance pupil diameter (ENPD) of the camera optical lens 10 is 1.643 mm, the full field of view (IH) is 2.265 mm, and the field of view (FOV) in the diagonal direction is 66.19°. The camera optical lens 10 meets the design requirements of large aperture, wide angle, and ultra-thin design. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0143] (Second Implementation)

[0144] The second implementation method is basically the same as the first implementation method, and the symbols have the same meanings as the first implementation method. Only the differences are listed below.

[0145] In this embodiment, the object-side surface of the first lens L1 is concave near the axis, the image-side surface of the first lens L1 is convex near the axis, and the object-side surface of the fourth lens L4 is convex near the axis.

[0146] Figure 5 The image shows the camera optical lens 20 according to the second embodiment of the present invention.

[0147] Tables 5 and 6 show the design data of the camera optical lens 20 according to the second embodiment of the present invention.

[0148] Table 5

[0149]

[0150] Table 6 shows the aspherical data of each lens in the camera optical lens 20 of the second embodiment of the present invention.

[0151] Table 6

[0152]

[0153]

[0154] 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.

[0155] Table 7

[0156] Number of recurve points Recurve point location 1 P1R1 0 / P1R2 0 / P2R1 1 0.235 P2R2 0 / P3R1 1 0.865 P3R2 1 0.845 P4R1 0 / P4R2 0 / P5R1 1 0.855 P5R2 1 0.875

[0157] Table 8

[0158] Number of outposts Location 1 P1R1 0 / P1R2 0 / P2R1 1 0.395 P2R2 0 / P3R1 0 / P3R2 1 1.285 P4R1 0 / P4R2 0 / P5R1 1 1.615 P5R2 1 1.785

[0159] Figure 6 , Figure 7 A schematic diagrams of axial aberration and magnification chromatic aberration are shown respectively after light with wavelengths of 905nm, 940nm and 975nm 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 905nm 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.

[0160] As shown in Table 21, the second embodiment satisfies each conditional expression.

[0161] In this embodiment, the entrance pupil diameter (ENPD) of the camera optical lens 20 is 1.429 mm, the full field of view (IH) is 2.265 mm, and the field of view (FOV) in the diagonal direction is 74.32°. The camera optical lens 20 meets the design requirements of large aperture, wide angle, and ultra-thin design. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0162] (Third Implementation)

[0163] The third implementation method is basically the same as the first implementation method, and the symbols have the same meanings as the first implementation method. Only the differences are listed below.

[0164] In this embodiment, the object-side surface of the fourth lens L4 is convex near the axis, and the fifth lens L5 has negative refractive power.

[0165] Figure 9 The image shown is the camera optical lens 30 according to the third embodiment of the present invention.

[0166] Tables 9 and 10 show the design data of the camera optical lens 30 according to the third embodiment of the present invention.

[0167] Table 9

[0168]

[0169] Table 10 shows the aspherical data of each lens in the camera optical lens 30 of the third embodiment of the present invention.

[0170] Table 10

[0171]

[0172] 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.

[0173] Table 11

[0174] Number of recurve points Recurve point location 1 Recurve point position 2 P1R1 0 / / P1R2 0 / / P2R1 0 / / P2R2 0 / / P3R1 1 0.865 / P3R2 2 1.035 1.055 P4R1 0 / / P4R2 0 / / P5R1 1 0.245 / P5R2 1 0.645 /

[0175] Table 12

[0176] Number of outposts Location 1 P5R1 1 0.425 P5R2 1 1.385

[0177] Figure 10 , Figure 11 A schematic diagrams of axial aberration and magnification chromatic aberration are shown respectively after light with wavelengths of 905nm, 940nm and 975nm passes through the camera optical lens 30 of the third embodiment.

[0178] Figure 12This shows a schematic diagram of field curvature and distortion after light with a wavelength of 905nm 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.

[0179] Table 21 below lists the values ​​of each conditional expression in this embodiment according to the above-described conditional expressions. Clearly, the camera optical lens 30 of this embodiment satisfies the above-described conditional expressions.

[0180] In this embodiment, the entrance pupil diameter (ENPD) of the camera optical lens 30 is 1.577 mm, the full field of view (IH) is 2.265 mm, and the field of view (FOV) in the diagonal direction is 66.34°. The camera optical lens 30 meets the design requirements of large aperture, wide angle, and ultra-thin design. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0181] (Fourth Implementation)

[0182] The fourth implementation method is basically the same as the first implementation method, and the symbols have the same meanings as the first implementation method. Only the differences are listed below.

[0183] In this embodiment, the object-side surface of the first lens L1 is concave near the axis, the image-side surface of the first lens L1 is convex near the axis, and the object-side surface of the fourth lens L4 is convex near the axis.

[0184] Figure 13 The image shown is the camera optical lens 40 according to the fourth embodiment of the present invention.

[0185] Tables 13 and 14 show the design data of the camera optical lens 40 according to the fourth embodiment of the present invention.

[0186] Table 13

[0187]

[0188]

[0189] Table 14 shows the aspherical data of each lens in the camera optical lens 40 of the fourth embodiment of the present invention.

[0190] Table 14

[0191]

[0192] 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.

[0193] Table 15

[0194] Number of recurve points Recurve point location 1 P1R1 0 / P1R2 0 / P2R1 1 0.275 P2R2 0 / P3R1 1 0.685 P3R2 1 0.665 P4R1 0 / P4R2 0 / P5R1 1 0.735 P5R2 1 0.775

[0195] Table 16

[0196]

[0197]

[0198] Figure 14 , Figure 15 Axial aberration and magnification chromatic aberration are shown respectively after light with wavelengths of 905nm, 940nm and 975nm passes through the camera optical lens 40 of the fourth embodiment.

[0199] Figure 16 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 905nm 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.

[0200] Table 21 below lists the values ​​of each conditional expression in this embodiment according to the above-described conditional expressions. Clearly, the camera optical lens 40 of this embodiment satisfies the above-described conditional expressions.

[0201] In this embodiment, the entrance pupil diameter (ENPD) of the camera optical lens 40 is 1.582 mm, the full field of view (IH) is 2.265 mm, and the field of view (FOV) in the diagonal direction is 67.06°. The camera optical lens 40 meets the design requirements of large aperture, wide angle, and ultra-thin design. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0202] (Comparative Implementation Methods)

[0203] The symbols in the comparative implementation method have the same meanings as those in the first implementation method; only the differences are listed below.

[0204] In the comparative embodiment, the object-side surface of the first lens L1 is concave near the axis, and the image-side surface of the first lens L1 is convex near the axis. The object-side surface of the fourth lens L4 is convex near the axis. The first lens L1 is a plastic lens.

[0205] Figure 17 The image shows a camera lens 50 according to a comparative embodiment.

[0206] Tables 17 and 18 show the design data of the camera optical lens 50 of the comparative embodiment.

[0207] Table 17

[0208]

[0209] Table 18 shows the aspherical data of each lens in the camera optical lens 50 of the comparative embodiment.

[0210] Table 18

[0211]

[0212] Tables 19 and 20 show the inflection point and stagnation point design data of each lens in the camera optical lens 50 of the comparative embodiment.

[0213] Table 19

[0214]

[0215]

[0216] Table 20

[0217] Number of outposts Location 1 P1R1 0 / P1R2 0 / P2R1 1 0.465 P2R2 0 / P3R1 1 1.175 P3R2 1 1.005 P4R1 0 / P4R2 0 / P5R1 1 1.425 P5R2 1 1.665

[0218] Figure 18 , Figure 19 The diagrams show axial aberration and magnification chromatic aberration of light with wavelengths of 905nm, 940nm, and 975nm after passing through the camera optical lens 50 of the comparative embodiment.

[0219] Figure 20 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 905nm passes through the camera optical lens 50 of the comparative embodiment. Figure 20 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0220] Table 21 below lists the values ​​of each conditional expression in the comparative embodiment according to the above conditional expressions. In the camera optical lens 50 of the comparative embodiment, the first lens is a plastic lens, which has a relatively small operating temperature range.

[0221] In the comparative embodiment, the entrance pupil diameter ENPD of the camera optical lens 50 is 1.576 mm, the full field of view image height IH is 2.265 mm, and the field of view angle FOV in the diagonal direction is 69.80°. The on-axis and off-axis chromatic aberrations of the camera optical lens 50 are not sufficiently corrected.

[0222] Table 21

[0223]

[0224]

[0225] 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 sequentially comprises 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 positive refractive power, and a fifth lens with refractive power from the object side to the image side; the first lens is made of glass, and at least one of the second lens, the third lens, the fourth lens, and the fifth lens is made of glass; the working temperature range of the camera optical lens is between minus 40 degrees Celsius and plus 105 degrees Celsius; Wherein, the focal length of the camera optical lens is f, the total optical length of the camera optical lens is TTL, the refractive index of the first lens is n1, the refractive index of the fourth lens is n4, the central curvature radius of the object side of the second lens is R3, the central curvature radius of the image side of the second lens is R4, and the following relationships are satisfied: 1.50≤TTL / f≤4.00; 1.70≤n1≤2.20； 1.70≤n4≤2.20； R3 / R4≤-2.

00.

2. The camera optical lens according to claim 1, wherein, The central curvature radius of the object side of the fifth lens is R9, the central curvature radius of the image side of the fifth lens is R10, and the following relationships are satisfied: (R9+R10) / (R9-R10)≥1.

50.

3. The camera optical lens according to claim 1, wherein, The focal length of the third lens is f3, and the on-axis thickness of the third lens is d5, and the following relationship is satisfied: 5.00≤|f3 / d5|≤10.

00.

4. The camera optical lens according to claim 1, characterized in that, The working wavelength of the camera optical lens is between 905 nanometers and 975 nanometers.

5. The camera optical lens according to claim 1, wherein, The focal length of the first lens is f1, the central curvature radius of the object side of the first lens is R1, the central curvature radius of the image side of the first lens is R2, and the on-axis thickness of the first lens is d1, and the following relationships are satisfied: 0.63≤f1 / f≤20.19; -7.72≤(R1+R2) / (R1-R2)≤44.20; 0.05≤d1 / TTL≤0.

38.

6. The camera optical lens according to claim 1, characterized in that, The object side surface of the second lens is convex at the near axis, and the image side surface of the second lens is convex at the near axis; The focal length of the second lens is f2, and the on-axis thickness of the second lens is d3, and the following relationships are satisfied: 0.64≤f2 / f≤4.33; 0.02≤d3 / TTL≤0.

11.

7. The camera optical lens according to claim 1, wherein, The object side surface of the third lens is concave at the near axis, and the image side surface of the third lens is convex at the near axis; The focal length of the third lens is f3, the central curvature radius of the object side of the third lens is R5, the central curvature radius of the image side of the third lens is R6, and the on-axis thickness of the third lens is d5, and the following relationships are satisfied: -2.72≤f3 / f≤-0.55; -5.60≤(R5+R6) / (R5-R6)≤0; 0.02≤d5 / TTL≤0.

13.

8. The camera optical lens according to claim 1, characterized in that, The image side surface of the fourth lens is convex at the near axis; The focal length of the fourth lens is f4, the central curvature radius of the object side of the fourth lens is R7, the central curvature radius of the image side of the fourth lens is R8, and the on-axis thickness of the fourth lens is d7, and the following relationships are satisfied: 0.29≤f4 / f≤3.34; 0.13 ≤ (R7+R8) / (R7-R8) ≤ 4.78; 0.06 ≤ d7 / TTL ≤ 0.

32.

9. The camera optical lens according to claim 1, characterized in that, The object side surface of the fifth lens is convex at the paraxial region, and the image side surface of the fifth lens is concave at the paraxial region; The focal length of the fifth lens is f5, the on-axis thickness of the fifth lens is d9, and the following relationship is satisfied: -2.11 ≤ f5 / f ≤ 8.85; 0.02 ≤ d9 / TTL ≤ 0.19.

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