Camera optical lens

Abstract

A camera optical lens (10, 20, 30, 40, 50), sequentially provided with, from an object side to an image side, a first lens (L1) having negative refractive power, a second lens (L2) having positive refractive power, a third lens (L3) having positive refractive power, a fourth lens (L4) having negative refractive power, and a fifth lens (L5) having positive refractive power, wherein the focal length of the third lens (L3) is f3, the focal length of the fourth lens (L4) is f4, the on-axis thickness of the second lens (L2) is d3, the on-axis thickness of the third lens (L3) is d5, the total optical length of the camera optical lens (10, 20, 30, 40, 50) is TTL, the central radius of curvature of the object side surface of the first lens (L1) is R1, the central radius of curvature of the image side surface of the first lens (L1) is R2, the focal length of the first lens (L1) is f1, and the following relational expressions are satisfied: -0.65≤f3 / f4≤-0.50; 0.25≤(d3+d5) / TTL≤0.35; 1.00≤(R1+R2) / f1≤2.00.

Description

Camera optical lens Technical Field

[0001] This application 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 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 wide-angle camera lenses with excellent optical characteristics, small size, and adequate aberration correction. Summary of the Invention

[0003] To address the aforementioned issues, the main objective of this application is to provide a camera optical lens that possesses excellent optical performance while meeting the design requirements of large aperture, ultra-thin design, and wide-angle capability.

[0004] To achieve the above objectives, the technical solution of this application provides a camera optical lens, which is composed of a first lens with negative refractive power, a second lens with positive refractive power, a third lens with positive refractive power, a fourth lens with negative refractive power, and a fifth lens with positive refractive power arranged sequentially from the object side to the image side; wherein, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the axial thickness of the second lens is d3, the axial thickness of the third lens is d5, the total optical length of the camera optical lens is TTL, 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 focal length of the first lens is f1, and satisfies the following relationships: -0.65≤f3 / f4≤-0.50; 0.25≤(d3+d5) / TTL≤0.35; 1.00≤(R1+R2) / f1≤2.00.

[0005] 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 they satisfy the following relationship: -4.00≤R9 / R10≤-1.50.

[0006] Preferably, the edge thickness of the first lens is ET1, the axial thickness of the first lens is d1, and the following relationship is satisfied: 1.81≤ET1 / d1≤2.10.

[0007] Preferably, 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: 2.00≤f5 / d9≤3.00.

[0008] Preferably, the object-side surface of the first lens is concave near the axis, and the image-side surface of the first lens is concave near the axis; the focal length of the imaging optical lens is f, and the on-axis thickness of the first lens is d1, and the following relationships are satisfied: -1.49≤f1 / f≤-1.40; 0.40≤(R1+R2) / (R1-R2)≤0.57; 0.101≤d1 / TTL≤0.118.

[0009] 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 focal length of the camera optical lens is f, 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 on-axis thickness of the second lens is d3, and satisfies the following relationships: 4.43≤f2 / f≤5.49; -2.76≤(R3+R4) / (R3-R4)≤-1.39; 0.177≤d3 / TTL≤0.249.

[0010] Preferably, the object-side surface of the third lens is convex near the axis, and the image-side surface of the third lens is convex near the axis; the focal length of the camera optical lens is f, 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 on-axis thickness of the third lens is d5, and the following relationships are satisfied: 1.60≤f3 / f≤1.71; 0.24≤(R5+R6) / (R5-R6)≤0.38; 0.049≤d5 / TTL≤0.109.

[0011] Preferably, the object-side surface of the fourth lens is convex near the axis, and the image-side surface of the fourth lens is concave near the axis; the focal length of the camera optical lens is f, 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 on-axis thickness of the fourth lens is d7, and the following relationships are satisfied: -3.27≤f4 / f≤-2.57; 2.42≤(R7+R8) / (R7-R8)≤3.00; 0.040≤d7 / TTL≤0.045.

[0012] Preferably, the object-side surface of the fifth lens is convex near the axis, and the image-side surface of the fifth lens is convex near the axis; the focal length of the fifth lens is f5, the focal length of the camera optical lens is f, and the on-axis thickness of the fifth lens is d9, and the following relationships are satisfied: 1.92≤f5 / f≤2.17; 0.111≤d9 / TTL≤0.155.

[0013] Preferably, the total optical length of the camera lens is TTL, the image height of the camera lens in the 1.0 field of view is IH, and the following relationship is satisfied: TTL / IH≤4.02.

[0014] The beneficial effects of this application are as follows: the camera optical lens according to this application has excellent optical characteristics, and has the characteristics of large aperture, wide angle and ultra-thinness, 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 this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

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

[0017] Figure 2 is a schematic diagram of the axial aberration of the camera optical lens shown in Figure 1;

[0018] Figure 3 is a schematic diagram of the magnification chromatic aberration of the camera optical lens shown in Figure 1;

[0019] Figure 4 is a schematic diagram of the field curvature and distortion of the camera optical lens shown in Figure 1;

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

[0021] Figure 6 is a schematic diagram of the axial aberration of the camera optical lens shown in Figure 5;

[0022] Figure 7 is a schematic diagram of the magnification chromatic aberration of the camera optical lens shown in Figure 5;

[0023] Figure 8 is a schematic diagram of the field curvature and distortion of the camera optical lens shown in Figure 5;

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

[0025] Figure 10 is a schematic diagram of the axial aberration of the camera optical lens shown in Figure 9;

[0026] Figure 11 is a schematic diagram of the magnification chromatic aberration of the camera optical lens shown in Figure 9;

[0027] Figure 12 is a schematic diagram of the field curvature and distortion of the camera optical lens shown in Figure 9;

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

[0029] Figure 14 is a schematic diagram of the axial aberration of the camera optical lens shown in Figure 13;

[0030] Figure 15 is a schematic diagram of the magnification chromatic aberration of the camera optical lens shown in Figure 13;

[0031] Figure 16 is a schematic diagram of the field curvature and distortion of the camera optical lens shown in Figure 13;

[0032] Figure 17 is a schematic diagram of the structure of the camera optical lens according to the fifth embodiment of this application;

[0033] Figure 18 is a schematic diagram of the axial aberration of the camera optical lens shown in Figure 17;

[0034] Figure 19 is a schematic diagram of the magnification chromatic aberration of the camera optical lens shown in Figure 17;

[0035] Figure 20 is a schematic diagram of the field curvature and distortion of the camera optical lens shown in Figure 17;

[0036] Figure 21 is a schematic diagram of the structure of the camera optical lens in the comparative embodiment;

[0037] Figure 22 is a schematic diagram of the axial aberration of the camera optical lens shown in Figure 21;

[0038] Figure 23 is a schematic diagram of the magnification chromatic aberration of the camera optical lens shown in Figure 21;

[0039] Figure 24 is a schematic diagram of the field curvature and distortion of the camera optical lens shown in Figure 21. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this application clearer, the various embodiments of this application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been presented in the various embodiments of this application to facilitate a better understanding of the application. However, the technical solutions claimed in this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0041] Referring to the accompanying drawings, the technical solution of this application provides a camera optical lens 10, 20, 30, 40, and 50. Figures 1, 5, 9, 13, and 17 show the camera optical lens 10, 20, 30, 40, and 50 of this application, which comprises a total of five lenses. Specifically, the camera optical lens is composed of a first lens L1 with negative refractive power, a second lens L2 with positive refractive power, a third lens L3 with positive refractive power, a fourth lens L4 with negative refractive power, and a fifth lens L5 with positive refractive power, arranged sequentially from the object side to the image side.

[0042] The focal length of the third lens is defined as f3, and the focal length of the fourth lens is defined as f4, satisfying the following relationship -0.65≤f3 / f4≤-0.50. This specifies the focal length ratio of the third and fourth lenses, which can reasonably allocate the optical focal length of the camera lens, so that the system has better imaging quality and lower sensitivity.

[0043] The on-axis thickness of the second lens is defined as d3, the on-axis thickness of the third lens is defined as d5, and the total optical length of the camera optical lens is defined as TTL, where: 0.25≤(d3+d5) / TTL≤0.35. The on-axis thicknesses of the second and third lenses can be reasonably specified within the condition, which helps to compress the total length of the camera optical system.

[0044] The radius of curvature of the object side of the first lens is defined as R1, the radius of curvature of the image side of the first lens is defined as R2, and the focal length of the first lens is defined as f1. 1.00≤(R1+R2) / f1≤2.00. Within the conditional range, the surface shape of the first lens 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.

[0045] Under the above conditions, the camera optical lenses 10, 20, 30, 40, and 50 have 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 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.

[0046] Based on the above conditional expressions and the functions that can be achieved, the characteristics of each lens are further refined as follows.

[0047] The center radius of curvature of the object side of the fifth lens is R9, and the center radius of curvature of the image side of the fifth lens is R10. -4.00≤R9 / R10≤-1.50 defines the shape of the fifth lens L5. Within this range, with the development of ultra-thin wide-angle lenses, it is beneficial to correct the astigmatism and distortion of the camera, making the distortion less than or equal to 5%.

[0048] The edge thickness of the first lens is ET1, and the on-axis thickness of the first lens is d1. 1.81≤ET1 / d1≤2.10 specifies the ratio of the edge thickness to the on-axis thickness of the first lens L1, which is helpful for lens processing and lens assembly.

[0049] The fifth lens has a focal length of f5 and an on-axis thickness of d9. 2.00≤f5 / d9≤3.00. Within the conditional range, this helps the fifth lens maintain sufficient positive refractive power to correct off-axis aberrations at the image side, effectively shortening the total optical length and enabling miniaturization of the camera optical lens.

[0050] The object-side surface of the first lens L1 is concave near the axis, and the image-side surface is also concave near the axis. The object-side surface and image-side surface of the first lens L1 can also be configured with other concave or convex distributions.

[0051] The focal length of the camera optical lens is defined as f, and the on-axis thickness of the first lens is d1. The ratio of the negative refractive power of the first lens L1 to the overall focal length is specified as -1.49 ≤ f1 / f ≤ -1.40. Within this specified range, the first lens possesses appropriate negative refractive power, which is beneficial for reducing system aberrations and also facilitates the development of ultra-thin and wide-angle lenses.

[0052] 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: 0.40≤(R1+R2) / (R1-R2)≤0.57. The shape of the first lens L1 is reasonably controlled so that the first lens L1 can effectively correct the spherical aberration of the system.

[0053] The on-axis thickness of the first lens L1 is d1, and the total optical length of the camera optical lens 10 is TTL, satisfying the following relationship: 0.101≤d1 / TTL≤0.118. Within the range of the condition, it is beneficial to achieve ultra-thinness.

[0054] 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 object-side and image-side surfaces of the second lens L2 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 second lens L2 is defined as f2, satisfying the following relationship: 4.43≤f2 / f≤5.49. 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.

[0056] 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: -2.76≤(R3+R4) / (R3-R4)≤-1.39, which defines the shape of the second lens L2. When within this range, as lenses develop towards ultra-thin and wide-angle lenses, it is beneficial to correct on-axis chromatic aberration problems.

[0057] The on-axis thickness of the second lens L2 is d3, and the total optical length of the camera optical lens 10 is TTL, satisfying the following relationship: 0.177≤d3 / TTL≤0.249. Within the range of the condition, it is beneficial to achieve ultra-thinness.

[0058] The object-side surface of the third lens L3 is convex near the axis, and the image-side surface is also convex near the axis. The object-side and image-side surfaces of the third lens L3 can also be configured with other concave and convex distributions.

[0059] 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: 1.60≤f3 / f≤1.71. Through the reasonable allocation of optical power, the system has better imaging quality and lower sensitivity.

[0060] 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: 0.24≤(R5+R6) / (R5-R6)≤0.38, which specifies 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 light deflection after passing through the lens and effectively reduce aberrations.

[0061] The on-axis thickness of the third lens L3 is d5, and the total optical length of the camera optical lens 10 is TTL, satisfying the following relationship: 0.049≤d5 / TTL≤0.109. Within the range of the condition, it is beneficial to achieve ultra-thinness.

[0062] The object-side surface of the fourth lens L4 is convex near the axis, and the image-side surface is concave near the axis. The object-side and image-side surfaces of the fourth lens L4 can also be configured with other concave and convex distributions.

[0063] 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: -3.27≤f4 / f≤-2.57. Through the reasonable allocation of optical power, the system has better imaging quality and lower sensitivity.

[0064] 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 the following relationship is satisfied: 2.42≤(R7+R8) / (R7-R8)≤3.00, which defines the shape of the fourth lens L4. When within this range, with the development of ultra-thin wide-angle lenses, it is beneficial to correct aberrations and other problems in off-axis drawing angles.

[0065] The on-axis thickness of the fourth lens L4 is d7, and the total optical length of the camera optical lens 10 is TTL, satisfying the following relationship: 0.040≤d7 / TTL≤0.045. Within the range of the condition, it is beneficial to achieve ultra-thinness.

[0066] The object-side surface of the fifth lens L5 is convex near the axis, and the image-side surface is also convex near the axis. The object-side and image-side surfaces of the fifth lens L5 can also be configured with other concave and convex distributions.

[0067] 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: 1.92≤f5 / f≤2.17. The limitation of the fifth lens L5 can effectively make the light angle of the camera optical lens 10 smooth and reduce tolerance sensitivity.

[0068] The axial thickness of the fifth lens L5 is d9, and the total optical length of the camera optical lens 10 is TTL, satisfying the following relationship: 0.111≤d9 / TTL≤0.155. Within the range of the condition, it is beneficial to achieve ultra-thinness.

[0069] The total optical length of the camera lens is TTL, the image height of the camera lens in the 1.0 field of view is IH, and the following relationship is satisfied: TTL / IH≤4.02.

[0070] In this application, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 are all made of plastic. The lenses may also be made of other materials.

[0071] In this application, an optical element such as an optical filter GF is disposed between the fifth lens L5 and the image plane Si. The optical filter GF can be a glass cover or an optical filter. The optical filter GF can also be disposed in other positions.

[0072] In this application, an aperture S1 may also be provided between the third lens L3 and the fourth lens L4, and the aperture S1 may also be provided in other positions.

[0073] The imaging optical lens of this application will be illustrated below with examples. The symbols used in each example are shown below. The units for focal length, on-axis distance, center radius of curvature, and on-axis thickness are mm.

[0074] TTL: Total optical length (axial distance from the object surface of the first lens L1 to the image plane Si), in mm;

[0075] Aperture value FNO: refers to the ratio of the effective focal length to the entrance pupil diameter of a camera lens;

[0076] 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);

[0077] 1.0 Field of View (FOV): The field of view angle corresponding to the effective pixel of the sensor;

[0078] Image height IHm of MIC field of view: The field of view height extended beyond 1.0 to prevent assembly deviation;

[0079] FOVm: The field of view angle corresponding to the image height of the MIC field of view.

[0080] The technical solution of this application will be described in detail below with five implementation methods. At the same time, a comparative implementation method is provided for reference. The technical effects of this application cannot be achieved when the above conditions are not met.

[0081] (First Implementation)

[0082] Tables 1 and 2 show the design data of the camera optical lens 10 according to the first embodiment of this application.

[0083] Table 1

[0084] The meanings of each symbol are as follows.

[0085] S1: Aperture;

[0086] R: Radius of curvature at the center of the optical surface;

[0087] R1: The central radius of curvature of the object-side surface of the first lens L1;

[0088] R2: The central radius of curvature of the image-side surface of the first lens L1;

[0089] R3: The central radius of curvature of the object-side surface of the second lens L2;

[0090] R4: The central radius of curvature of the image-side surface of the second lens L2;

[0091] R5: The central radius of curvature of the object-side surface of the third lens L3;

[0092] R6: The central radius of curvature of the image-side surface of the third lens L3;

[0093] R7: The central radius of curvature of the object side surface of the fourth lens L4;

[0094] R8: The central radius of curvature of the image-side surface of the fourth lens L4;

[0095] R9: The central radius of curvature of the object-side surface of the fifth lens L5;

[0096] R10: The central radius of curvature of the image-side surface of the fifth lens L5;

[0097] R11: The center radius of curvature of the object side surface of the optical filter GF;

[0098] R12: Radius of curvature of the center of the image side of the optical filter GF;

[0099] d: The axial thickness of the lens and the axial distance between lenses;

[0100] d0: The on-axis distance from aperture S1 to the object-side surface of the first lens L1;

[0101] d1: On-axis thickness of the first lens L1;

[0102] 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;

[0103] d3: On-axis thickness of the second lens L2;

[0104] d4: The axial distance from the image-side surface of the second lens L2 to the object-side surface of the third lens L3;

[0105] d5: On-axis thickness of the third lens L3;

[0106] 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;

[0107] d7: On-axis thickness of the fourth lens L4;

[0108] 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;

[0109] d9: On-axis thickness of the fifth lens L5;

[0110] 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;

[0111] d11: On-axis thickness of the optical filter GF;

[0112] d12: The axial distance from the image-side surface of the optical filter GF to the image plane Si;

[0113] nd: Refractive index of the d-line;

[0114] nd1: The refractive index of the d-line of the first lens L1;

[0115] nd2: The refractive index of the d-line of the second lens L2;

[0116] nd3: The refractive index of the d-line of the third lens L3;

[0117] nd4: The refractive index of the d-line of the fourth lens L4;

[0118] nd5: The refractive index of the d-line of the fifth lens L5;

[0119] ndg: The refractive index of the d-line of the optical filter GF;

[0120] vd: Abbe number;

[0121] vd1: Abbe number of the first lens L1;

[0122] vd2: Abbe number of the second lens L2;

[0123] vd3: Abbe number of the third lens L3;

[0124] vd4: Abbe number of the fourth lens L4;

[0125] vd5: Abbe number of the fifth lens L5;

[0126] vdg: Abbe number of the GF of the optical filter.

[0127] Table 2 shows the aspherical data of each lens in the camera optical lens 10 of the first embodiment of this application.

[0128] Table 2

[0129] For convenience, the aspherical surfaces of each lens surface are those shown in formula (1) below. However, this application is not limited to the aspherical polynomial form represented by formula (1). z=(cr 2 ) / {1+[1-(k+1)(c 2 r 2 )] 1 / 2}+A4r 4 +A6r 6 +A8r 8 +A10r10 +A12r 12 +A14r 14 +A16r 16 +A18r 18 +A20r 20 +A22r 22 +A24r 24 +A26r 26 +A28r 28 +A30r 30 (1)

[0130] Where k is the conic coefficient, A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, and A30 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).

[0131] Figures 2 and 3 show 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, respectively. Figure 4 shows schematic diagrams of field curvature and distortion after light with a wavelength of 555nm passes through the camera optical lens 10 of the first embodiment. In Figure 4, the field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0132] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 10 is 0.548mm, the image height IH of the 1.0 field of view is 1.30mm, the field of view FOV of the 1.0 field of view is 117.82°, the image height IHm of the MIC field of view is 1.40mm, and the field of view FOVm of the MIC field of view is 123.77°. 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.

[0133] (Second Implementation)

[0134] The symbols in the second embodiment have the same meanings as those in the first embodiment.

[0135] Figure 5 shows the camera optical lens 20 of the second embodiment of this application.

[0136] Tables 3 and 4 show the design data of the camera optical lens 20 according to the second embodiment of this application.

[0137] Table 3

[0138] Table 4 shows the aspherical data of each lens in the camera optical lens 20 of the second embodiment of this application.

[0139] Table 4

[0140] Figures 6 and 7 show schematic diagrams of axial aberration and magnification chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm passes through the camera optical lens 20 of the second embodiment, respectively. Figure 8 shows schematic diagrams of field curvature and distortion after light with a wavelength of 555 nm passes through the camera optical lens 20 of the second embodiment. In Figure 8, the field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0141] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 20 is 0.531mm, the image height IH of the 1.0 field of view is 1.27mm, the field of view FOV of the 1.0 field of view is 118.51°, the image height IHm of the MIC field of view is 1.39mm, and the field of view FOVm of the MIC field of view is 123.90°. 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.

[0142] (Third Implementation)

[0143] The symbols in the third embodiment have the same meanings as those in the first embodiment.

[0144] Figure 9 shows the camera optical lens 30 of the third embodiment of this application.

[0145] Tables 5 and 6 show the design data of the camera optical lens 30 according to the third embodiment of this application.

[0146] Table 5

[0147] Table 6 shows the aspherical data of each lens in the camera optical lens 30 of the third embodiment of this application.

[0148] Table 6

[0149] Figures 10 and 11 show schematic diagrams of axial aberration and magnification chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm passes through the camera optical lens 30 of the third embodiment, respectively. Figure 12 shows schematic diagrams of field curvature and distortion after light with a wavelength of 555 nm passes through the camera optical lens 30 of the third embodiment. In Figure 12, the field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0150] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 30 is 0.532mm, the image height IH of the 1.0 field of view is 1.22mm, the field of view FOV of the 1.0 field of view is 119.31°, the image height IHm of the MIC field of view is 1.40mm, and the field of view FOVm of the MIC field of view is 125.17°. 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.

[0151] (Fourth Implementation)

[0152] The symbols in the fourth embodiment have the same meanings as those in the first embodiment.

[0153] Figure 13 shows the camera optical lens 40 of the fourth embodiment of this application.

[0154] Tables 7 and 8 show the design data of the camera optical lens 40 according to the fourth embodiment of this application.

[0155] Table 7

[0156] Table 8 shows the aspherical data of each lens in the camera optical lens 40 of the fourth embodiment of this application.

[0157] Table 8

[0158] Figures 14 and 15 show schematic diagrams of axial aberration and magnification chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm passes through the camera optical lens 40 of the fourth embodiment, respectively. Figure 16 shows schematic diagrams of field curvature and distortion after light with a wavelength of 555 nm passes through the camera optical lens 40 of the fourth embodiment. In Figure 16, 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 40 is 0.512mm, the image height IH of the 1.0 field of view is 1.25mm, the field of view FOV of the 1.0 field of view is 121.22°, the image height IHm of the MIC field of view is 1.39mm, and the field of view FOVm of the MIC field of view is 118.28°. 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.

[0160] (Fifth Implementation)

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

[0162] Figure 17 shows the camera optical lens 50 of the fifth embodiment of this application.

[0163] Tables 9 and 10 show the design data of the camera optical lens 50 according to the fifth embodiment of this application.

[0164] Table 9

[0165] Table 10 shows the aspherical data of each lens in the camera optical lens 50 of the fifth embodiment of this application.

[0166] Table 10

[0167] Figures 18 and 19 show schematic diagrams of axial aberration and magnification chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm passes through the camera optical lens 50 of the fifth embodiment, respectively. Figure 20 shows schematic diagrams of field curvature and distortion after light with a wavelength of 555 nm passes through the camera optical lens 50 of the fifth embodiment. In Figure 20, the field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0168] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 50 is 0.517mm, the image height IH of the 1.0 field of view is 1.24mm, the field of view FOV of the 1.0 field of view is 120.78°, the image height IHm of the MIC field of view is 1.39mm, and the field of view FOVm of the MIC field of view is 126.53°. The camera optical lens 50 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.

[0169] Table 13, which appears later, shows the values ​​corresponding to the parameters specified in the conditional expressions for various numerical values ​​in each of the first, second, third, fourth, and fifth implementation methods.

[0170] (Comparative Implementation Methods)

[0171] The symbols in the comparative implementation method have the same meanings as those in the first implementation method.

[0172] Figure 21 shows the camera optical lens 60 of the comparative embodiment.

[0173] Tables 11 and 12 show the design data of the camera optical lens 60 of the comparative embodiment.

[0174] Table 11

[0175] Table 12 shows the aspherical data of each lens in the camera optical lens 60 of the comparative embodiment.

[0176] Table 12

[0177] Figures 22 and 23 show schematic diagrams of axial aberration and magnification chromatic aberration after light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm passes through the imaging optical lens 60 of the comparative embodiment, respectively. Figure 24 shows schematic diagrams of field curvature and distortion after light with a wavelength of 555 nm passes through the imaging optical lens 60 of the comparative embodiment. In Figure 24, the field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0178] Table 13 below lists the values ​​of each conditional expression in the comparative embodiment according to the above conditional expressions. Obviously, the camera optical lens 60 of the comparative embodiment does not satisfy the following conditional expression: -0.65≤f3 / f4≤-0.50.

[0179] In the comparative embodiment, the entrance pupil diameter ENPD of the camera optical lens 30 is 0.562mm, the image height IH of the 1.0 field of view is 1.20mm, the field of view FOV of the 1.0 field of view is 123.17°, the image height IHm of the MIC field of view is 1.45mm, and the field of view FOVm of the MIC field of view is 131.88°. The various aberrations of the camera optical lens 60 are not adequately corrected, and it does not have excellent optical characteristics.

[0180] Table 13

[0181] Those skilled in the art will understand that the above embodiments are specific implementations of this application, and in practical applications, various changes can be made in form and detail without departing from the spirit and scope of this application.

Claims

1. A camera optical lens, characterized in that, The camera optical lens is composed of a first lens with negative refractive power, a second lens with positive refractive power, a third lens with positive refractive power, a fourth lens with negative refractive power, and a fifth lens with positive refractive power arranged sequentially from the object side to the image side. Wherein, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the on-axis thickness of the second lens is d3, the on-axis thickness of the third lens is d5, the total optical length of the imaging optical lens is TTL, 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 focal length of the first lens is f1, and the following relationship is satisfied: -0.65≤f3 / f4≤-0.50; 0.25≤(d3+d5) / TTL≤0.35; 1.00≤(R1+R2) / f1≤2.

00.

2. The camera optical lens according to claim 1, characterized in that, 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 they satisfy the following relationship: -4.00≤R9 / R10≤-1.

50.

3. The camera optical lens according to claim 1, characterized in that, The edge thickness of the first lens is ET1, and the axial thickness of the first lens is d1, and they satisfy the following relationship: 1.81≤ET1 / d1≤2.

10.

4. The camera optical lens according to claim 1, characterized in that, The focal length of the fifth lens is f5, and the on-axis thickness of the fifth lens is d9, satisfying the following relationship: 2.00≤f5 / d9≤3.

00.

5. The camera optical lens according to claim 1, characterized in that, The object-side surface of the first lens is concave at the paraxial position, and the image-side surface of the first lens is concave at the paraxial position. The focal length of the camera optical lens is f, the on-axis thickness of the first lens is d1, and the following relationship is satisfied: -1.49≤f1 / f≤-1.40; 0.40≤(R1+R2) / (R1-R2)≤0.57; 0.101≤d1 / TTL≤0.

118.

6. 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 focal length of the imaging optical lens is f, the central radius of curvature of the object side of the second lens is R3, the central radius of curvature of the image side of the second lens is R4, and the axial thickness of the second lens is d3, and the following relationship is satisfied: 4.43≤f² / f≤5.49; -2.76≤(R3+R4) / (R3-R4)≤-1.39; 0.177≤d3 / TTL≤0.

249.

7. 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 convex at the paraxial position. The focal length of the camera optical lens is f, 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: 1.60≤f³ / f≤1.71; 0.24≤(R5+R6) / (R5-R6)≤0.38; 0.049≤d5 / TTL≤0.

109.

8. The camera optical lens according to claim 1, characterized in that, The object-side surface of the fourth lens is convex at the paraxial position, and the image-side surface of the fourth lens is concave at the paraxial position. The focal length of the camera optical lens is f, the central radius of curvature of the object side of the fourth lens is R7, the central radius of curvature of the image side of the fourth lens is R8, and the on-axis thickness of the fourth lens is d7, and the following relationship is satisfied: -3.27≤f4 / f≤-2.57; 2.42≤(R7+R8) / (R7-R8)≤3.00; 0.040≤d7 / TTL≤0.

045.

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 position, and the image-side surface of the fifth lens is convex at the paraxial position. The fifth lens has a focal length of f5, the camera optical lens has a focal length of f, and the fifth lens has an on-axis thickness of d9, satisfying the following relationship: 1.92≤f5 / f≤2.17; 0.111≤d9 / TTL≤0.

155.

10. The camera optical lens according to claim 1, characterized in that, The total optical length of the camera lens is TTL, the image height of the camera lens in the 1.0 field of view is IH, and the following relationship is satisfied: TTL / IH≤4.02.

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