Camera optical lens
Through the optimized design of the five-lens structure, the challenges of large aperture, wide angle and ultra-thinness in miniaturized camera optical lenses have been solved, achieving excellent optical performance and aberration correction, making it suitable for mobile phone and web camera lenses with high-pixel camera elements.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- CHANGZHOU RAYTECH OPTRONICS CO LTD
- Filing Date
- 2025-01-21
- Publication Date
- 2026-07-30
AI Technical Summary
Existing technologies struggle to achieve the design requirements of large aperture, wide-angle, and ultra-thin features in miniaturized camera lenses, and are also unable to effectively correct aberrations.
Employing a five-lens structure, the curvature radius, focal length, and thickness of each lens are optimized to satisfy specific relationships, achieving a large aperture, wide-angle, and ultra-thin design. This includes the rational distribution of positive and negative refractive forces and the optimization of lens shape.
It achieves a camera lens with excellent optical performance, suitable for mobile phone camera lenses and WEB camera lenses with high-pixel camera elements, with large aperture, wide angle and ultra-thin characteristics, and effectively corrects aberrations.
Smart Images
Figure CN2025073733_30072026_PF_FP_ABST
Abstract
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 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 positive refractive power, a fourth lens with positive refractive power, and a fifth lens with negative refractive power; wherein, the radius of curvature of the object-side surface of the fifth lens is R9, the radius of curvature of the image-side surface of the fifth lens is R10, the radius of curvature of the object-side surface of the third lens is R5, the radius of curvature of the image-side surface of the third lens is R6, and the fourth lens... The focal length of the first lens is f4, the focal length of the fifth lens is f5, the air gap between the fourth and fifth lenses is T45, the axial thickness of the third lens is d5, the axial thickness of the fourth lens is d7, and the axial distance from the image side of the third lens to the object side of the fourth lens is d6, satisfying the following relationships: 2.40≤R9 / R10≤3.60; 0.50≤(R5+R6) / (R5-R6)≤0.90; 15.00≤(f4-f5) / T45≤25.00; 3.00≤(d5+d7) / d6≤5.00.
[0005] Preferably, the radius of curvature of the object side of the fourth lens is R7, and the radius of curvature of the image side of the fourth lens is R8, and the following relationship is satisfied: 3.60≤R7 / R8≤9.00.
[0006] Preferably, the focal length of the first lens is f1, the focal length of the second lens is f2, and the following relationship is satisfied: -0.45≤f1 / f2≤-0.25.
[0007] Preferably, the object-side surface of the first lens is convex near the axis, and the image-side surface of the first lens is concave near the axis; the focal length of the first lens is f1, the focal length of the camera optical lens is f, the radius of curvature of the object-side surface of the first lens is R1, the radius of curvature of the image-side surface of the first lens is R2, the axial thickness of the first lens is d1, and the total optical length of the camera optical lens is TTL, and satisfies the following relationships: 0.86≤f1 / f≤1.07; -1.78≤(R1+R2) / (R1-R2)≤-1.60; 0.14≤d1 / TTL≤0.16.
[0008] 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 radius of curvature of the object-side surface of the second lens is R3, the radius of curvature of the image-side surface of the second lens is R4, the on-axis thickness of the second lens is d3, and the total optical length of the camera optical lens is TTL, and satisfies the following relationships: -4.25≤f2 / f≤-1.91; 2.65≤(R3+R4) / (R3-R4)≤5.16; 0.04≤d3 / TTL≤0.06.
[0009] Preferably, 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 third lens is f3, the focal length of the camera optical lens is f, and the total optical length of the camera optical lens is TTL, and the following relationships are satisfied: 4.35≤f3 / f≤6.82; 0.10≤d5 / TTL≤0.13.
[0010] Preferably, the object-side surface of the fourth lens is concave near the axis, and the image-side surface of the fourth lens is convex near the axis; the focal length of the camera optical lens is f, the radius of curvature of the object-side surface of the fourth lens is R7, the radius of curvature of the image-side surface of the fourth lens is R8, and the total optical length of the camera optical lens is TTL, and satisfies the following relationships: 1.30≤f4 / f≤1.51; 1.25≤(R7+R8) / (R7-R8)≤1.76; 0.14≤d7 / TTL≤0.18.
[0011] 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 camera optical lens is f, the on-axis thickness of the fifth lens is d9, and the total optical length of the camera optical lens is TTL, and the following relationships are satisfied: -0.93≤f5 / f≤-0.82; 1.76≤(R9+R10) / (R9-R10)≤2.41; 0.08≤d9 / TTL≤0.10.
[0012] Preferably, the aperture number of the camera optical lens is FNO, and satisfies the following relationship: FNO≤1.88.
[0013] Preferably, the field of view of the camera optical lens is FOV, and satisfies the following relationship: 76.87°≤FOV.
[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 in the comparative embodiment;
[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. Detailed Implementation
[0032] 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.
[0033] Referring to the accompanying drawings, the technical solution of this application provides a camera optical lens 10, 20, and 30. Figures 1, 5, and 9 show the camera optical lens 10, 20, and 30 of this application, which comprises a total of five lenses. Specifically, the camera optical lens, from the object side to the image side, consists of: aperture S1, first lens L1, 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 S1.
[0034] 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. Other materials may also be used for the lenses.
[0035] The radius of curvature of the object side of the fifth lens L5 is defined as R9, and the radius of curvature of the image side of the fifth lens L5 is defined as R10, where 2.40≤R9 / R10≤3.60. This defines the shape of the fifth lens L5, which is beneficial for correcting astigmatism and distortion of the camera lens, making the distortion|Distortion|≤3%, and reducing the possibility of vignetting.
[0036] The radius of curvature of the object side of the third lens L3 is defined as R5, and the radius of curvature of the image side of the third lens L3 is defined as R6, wherein: 0.50≤(R5+R6) / (R5-R6)≤0.90. This defines the shape of the third lens L3. Within the conditional range, this is beneficial to mitigate the degree of light deflection after passing through the lens and can effectively reduce aberrations.
[0037] The focal length of the fourth lens L4 is defined as f4, the focal length of the fifth lens L5 is defined as f5, and the air gap between the fourth lens L4 and the fifth lens L5 is defined as T45, where: 15.00≤(f4-f5) / T45≤25.00. When the above conditions are met, it helps the rear lens maintain a sufficiently strong negative refractive force to correct the off-axis aberration at the image side, and at the same time can effectively shorten the total optical length to achieve miniaturization, thereby expanding the application range of the product.
[0038] The on-axis thickness of the third lens L3 is defined as d5, the on-axis thickness of the fourth lens L4 is defined as d7, and the on-axis distance from the image side of the third lens L3 to the object side of the fourth lens L4 is defined as d6. 3.00≤(d5+d7) / d6≤5.00 specifies the ratio of air gaps, which helps to compress the total length of the optical system within the conditional range.
[0039] The radius of curvature of the object side of the fourth lens L4 is defined as R7, and the radius of curvature of the image side of the fourth lens L4 is defined as R8. 3.60≤R7 / R8≤9.00 defines the shape of the fourth lens L4. When within the specified range, it helps to mitigate the degree of light deflection after passing through the lens and can effectively reduce aberrations.
[0040] The focal length of the first lens L1 is defined as f1, and the focal length of the second lens L2 is defined as f2. -0.45≤f1 / f2≤-0.25 specifies the ratio of the focal lengths of the first lens L1 and the second lens L2. By reasonably allocating the optical focal length of the system, the system can have better imaging quality and lower sensitivity.
[0041] Under the above conditions, the camera optical lenses 10, 20, and 30 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, and 30, they are particularly suitable for mobile phone camera lens assemblies and WEB camera lenses composed of high-pixel CCD, CMOS, and other camera elements.
[0042] Based on the above conditional expressions and the functions that can be achieved, the characteristics of each lens are further refined as follows.
[0043] The object-side surface of the first lens L1 is convex near the axis, and the image-side surface is concave near the axis. The first lens L1 has positive refractive power. The object-side surface and image-side surface of the first lens L1 can also be configured with other concave and convex distributions.
[0044] The focal length of the camera optical lens 10 is f, and the focal length of the first lens L1 is f1, satisfying the following relationship: 0.86≤f1 / f≤1.07, 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 has appropriate positive refractive power, which is beneficial for reducing system aberrations and also facilitates the development of ultra-thin and wide-angle lenses.
[0045] The center radius of curvature of the object side of the first lens L1 is R1, and the center radius of curvature of the image side of the first lens L1 is R2, satisfying the following relationship: -1.78≤(R1+R2) / (R1-R2)≤-1.60. By reasonably controlling the shape of the first lens L1, the first lens L1 can effectively correct the spherical aberration of the system.
[0046] 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: 0.14≤d1 / TTL≤0.16. Within the range of the condition, it is beneficial to achieve ultra-thinness.
[0047] 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.
[0048] The focal length of the camera optical lens 10 is f, and the focal length of the second lens L2 is f2, satisfying the following relationship: -4.25≤f2 / f≤-1.91. 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.
[0049] 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: 2.65≤(R3+R4) / (R3-R4)≤5.16, 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.
[0050] 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: 0.04≤d3 / TTL≤0.06. Within the range of the condition, it is beneficial to achieve ultra-thinness.
[0051] 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 third lens L3 has positive refractive power. The object-side surface and image-side surface of the third lens L3 can also be configured with other concave and convex distributions.
[0052] The focal length of the camera optical lens 10 is f, and the focal length of the third lens L3 is f3, satisfying the following relationship: 4.35≤f3 / f≤6.82. Through the reasonable allocation of optical power, the system has better imaging quality and lower sensitivity.
[0053] 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: 0.10≤d5 / TTL≤0.13. Within the range of the condition, it is beneficial to achieve ultra-thinness.
[0054] 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.
[0055] The focal length of the camera optical lens 10 is f, and the focal length of the fourth lens L4 is f4, satisfying the following relationship: 1.30≤f4 / f≤1.51. Through the reasonable allocation of optical power, the system has better imaging quality and lower sensitivity.
[0056] The central radius of curvature of the object side of the fourth lens L4 is R7, and the central radius of curvature of the image side of the fourth lens L4 is R8, and they satisfy the following relationship: 1.25≤(R7+R8) / (R7-R8)≤1.76, 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.
[0057] 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: 0.14≤d7 / TTL≤0.18. Within the range of the condition, it is beneficial to achieve ultra-thinness.
[0058] The object-side surface of the fifth lens L5 is convex near the axis, while the image-side surface is concave 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.
[0059] The focal length of the camera optical lens 10 is f, and the focal length of the fifth lens L5 is f5, satisfying the following relationship: -0.93≤f5 / f≤-0.82. The limitation of the fifth lens L5 can effectively make the light angle of the camera optical lens 10 smooth and reduce tolerance sensitivity.
[0060] The central radius of curvature of the object side of the fifth lens L5 is R9, and the central radius of curvature of the image side of the fifth lens L5 is R10, and the following relationship is satisfied: 1.76≤(R9+R10) / (R9-R10)≤2.41, which defines the shape of the fifth lens L5. When within the range, with the development of ultra-thin wide-angle lenses, it is beneficial to correct aberrations and other problems in off-axis drawing angles.
[0061] The on-axis 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: 0.08≤d9 / TTL≤0.10. Within the range of the condition, it is beneficial to achieve ultra-thinness.
[0062] The camera optical lens 10 has an aperture value (FNO) less than or equal to 1.88, thus achieving a large aperture and good imaging performance. The field of view (FOV) of the camera optical lens 10 at 1.0 field of view is greater than or equal to 76.87°, thus achieving wide-angle imaging.
[0063] The imaging optical lens of this application will be illustrated 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.
[0064] TTL: Total optical length (axial distance from the object surface of the first lens L1 to the image plane Si), in mm;
[0065] Aperture value FNO: refers to the ratio of the effective focal length to the entrance pupil diameter of a camera lens.
[0066] 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);
[0067] 1.0 Field of View (FOV): The field of view angle corresponding to the effective pixel of the sensor;
[0068] Image height IHm of MIC field of view: The field of view height extended beyond 1.0 to prevent assembly deviation;
[0069] FOVm: The field of view angle corresponding to the image height of the MIC field of view;
[0070] 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.
[0071] The technical solution of this application will be described in detail below with three 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.
[0072] (First Implementation)
[0073] Tables 1 and 2 show the design data of the camera optical lens 10 according to the first embodiment of this application.
[0074] Table 1
[0075] The meanings of each symbol are as follows.
[0076] S1: Aperture;
[0077] R: Radius of curvature at the center of the optical surface;
[0078] R1: The central radius of curvature of the object-side surface of the first lens L1;
[0079] R2: The central radius of curvature of the image-side surface of the first lens L1;
[0080] R3: The central radius of curvature of the object-side surface of the second lens L2;
[0081] R4: The central radius of curvature of the image-side surface of the second lens L2;
[0082] R5: The central radius of curvature of the object-side surface of the third lens L3;
[0083] R6: The central radius of curvature of the image-side surface of the third lens L3;
[0084] R7: The central radius of curvature of the object side surface of the fourth lens L4;
[0085] R8: The central radius of curvature of the image-side surface of the fourth lens L4;
[0086] R9: The central radius of curvature of the object-side surface of the fifth lens L5;
[0087] R10: The central radius of curvature of the image-side surface of the fifth lens L5;
[0088] R11: The center radius of curvature of the object side surface of the optical filter GF;
[0089] R12: Radius of curvature of the center of the image side of the optical filter GF;
[0090] d: Axial thickness of the lens, axial distance between lenses;
[0091] d0: The on-axis distance from aperture S1 to the object-side surface of the first lens L1;
[0092] d1: On-axis thickness of the first lens L1;
[0093] 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;
[0094] d3: On-axis thickness of the second lens L2;
[0095] d4: The axial distance from the image-side surface of the second lens L2 to the object-side surface of the third lens L3;
[0096] d5: On-axis thickness of the third lens L3;
[0097] 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;
[0098] d7: On-axis thickness of the fourth lens L4;
[0099] 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;
[0100] d9: On-axis thickness of the fifth lens L5;
[0101] 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;
[0102] d11: On-axis thickness of the optical filter GF;
[0103] D12: The on-axis distance from the image-side surface of the optical filter GF to the image plane Si;
[0104] nd: Refractive index of the d-line (the d-line is green light with a wavelength of 550 nm);
[0105] nd1: The refractive index of the d-line of the first lens L1;
[0106] nd2: The refractive index of the d-line of the second lens L2;
[0107] nd3: The refractive index of the d-line of the third lens L3;
[0108] nd4: The refractive index of the d-line of the fourth lens L4;
[0109] nd5: The refractive index of the d-line of the fifth lens L5;
[0110] ndg: The refractive index of the d-line of the optical filter GF;
[0111] vd: Abbe number;
[0112] vd1: Abbe number of the first lens L1;
[0113] vd2: Abbe number of the second lens L2;
[0114] vd3: Abbe number of the third lens L3;
[0115] vd4: Abbe number of the fourth lens L4;
[0116] vd5: Abbe number of the fifth lens L5;
[0117] vdg: Abbe number of the GF of the optical filter.
[0118] Table 2 shows the aspherical data of each lens in the camera optical lens 10 of the first embodiment of this application.
[0119] Table 2
[0120] 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 +A10r 10 +A12r 12 +A14r 14 +A16r 16 +A18r 18 +A20r 20 +A22r 22 +A24r 24 +A26r 26 +A28r 28 +A30r 30 (1)
[0121] 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).
[0122] Figures 2 and 3 show schematic diagrams of axial aberration and magnification chromatic aberration after light with wavelengths of 650nm, 610nm, 555nm, 510nm, 470nm, and 435nm passes through the imaging 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 imaging 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.
[0123] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 10 is 2.587 mm, the image height IH of the 1.0 field of view is 4.096 mm, the field of view FOV of the 1.0 field of view is 78.71°, the image height IHm of the MIC field of view is 4.310 mm, and the field of view FOVm of the MIC field of view is 81.58°. 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.
[0124] (Second Implementation)
[0125] The symbols in the second embodiment have the same meanings as those in the first embodiment.
[0126] Figure 5 shows the camera optical lens 20 of the second embodiment of this application.
[0127] Tables 3 and 4 show the design data of the camera optical lens 20 according to the second embodiment of this application.
[0128] Table 3
[0129] Table 4 shows the aspherical data of each lens in the camera optical lens 20 of the second embodiment of this application.
[0130] Table 4
[0131] 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.
[0132] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 20 is 2.673 mm, the image height IH of the 1.0 field of view is 4.074 mm, the field of view FOV of the 1.0 field of view is 76.87°, the image height IHm of the MIC field of view is 4.316 mm, and the field of view FOVm of the MIC field of view is 79.73°. 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.
[0133] (Third Implementation)
[0134] The symbols in the third embodiment have the same meanings as those in the first embodiment.
[0135] Figure 9 shows the camera optical lens 30 of the third embodiment of this application.
[0136] Tables 5 and 6 show the design data of the camera optical lens 30 according to the third embodiment of this application.
[0137] Table 5
[0138] Table 6 shows the aspherical data of each lens in the camera optical lens 30 of the third embodiment of this application.
[0139] Table 6
[0140] 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.
[0141] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 30 is 2.294 mm, the image height IH of the 1.0 field of view is 4.083 mm, the field of view FOV of the 1.0 field of view is 85.53°, the image height IHm of the MIC field of view is 4.309 mm, and the field of view FOVm of the MIC field of view is 88.44°. 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.
[0142] Table 9, which appears later, shows the values corresponding to various numerical values and parameters specified in the conditional expressions in each of the three implementation methods.
[0143] (Comparative Implementation Methods)
[0144] The symbols in the comparative implementation method have the same meanings as those in the first implementation method.
[0145] Figure 13 shows the camera optical lens 40 of the comparative embodiment.
[0146] Tables 7 and 8 show the design data of the camera optical lens 40 in the comparative embodiment.
[0147] Table 7
[0148] Table 8 shows the aspherical data of each lens in the camera optical lens 40 of the comparative embodiment.
[0149] Table 8
[0150] 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 imaging optical lens 40 of the comparative embodiment, respectively. Figure 16 shows schematic diagrams of field curvature and distortion after light with a wavelength of 555 nm passes through the imaging optical lens 40 of the comparative 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.
[0151] Table 9 below lists the values of each conditional expression in the comparative embodiment according to the above conditional expressions. Obviously, the camera optical lens 40 of the comparative embodiment does not satisfy the above conditional expression 2.40≤R9 / R10≤3.60.
[0152] In the comparative embodiment, the entrance pupil diameter ENPD of the camera optical lens 40 is 2.631mm, the image height IH of the 1.0 field of view is 4.096mm, the field of view FOV of the 1.0 field of view is 77.57°, the image height IHm of the MIC field of view is 4.310mm, and the field of view FOVm of the MIC field of view is 80.55°. The camera optical lens 40 does not meet the design requirements of large aperture, wide angle, and ultra-thin design.
[0153] Table 9
[0154] 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 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 positive refractive power, a fourth lens with positive refractive power, and a fifth lens with negative refractive power. Wherein, the radius of curvature of the object-side surface of the fifth lens is R9, the radius of curvature of the image-side surface of the fifth lens is R10, the radius of curvature of the object-side surface of the third lens is R5, the radius of curvature of the image-side surface of the third lens is R6, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the air gap between the fourth and fifth lenses is T45, the axial thickness of the third lens is d5, the axial thickness of the fourth lens is d7, and the axial distance from the image-side surface of the third lens to the object-side surface of the fourth lens is d6, and the following relationship is satisfied: 2.40≤R9 / R10≤3.60; 0.50≤(R5+R6) / (R5-R6)≤0.90; 15.00≤(f4-f5) / T45≤25.00; 3.00≤(d5+d7) / d6≤5.
00.
2. The camera optical lens according to claim 1, characterized in that, The radius of curvature of the object side of the fourth lens is R7, and the radius of curvature of the image side of the fourth lens is R8, and they satisfy the following relationship: 3.60≤R7 / R8≤9.
00.
3. The camera optical lens according to claim 1, characterized in that, The focal length of the first lens is f1, and the focal length of the second lens is f2, and they satisfy the following relationship: -0.45≤f1 / f2≤-0.
25.
4. The camera optical lens according to claim 1, characterized in that, The object-side surface of the first lens is convex at the paraxial position, and the image-side surface of the first lens is concave at the paraxial position. The focal length of the first lens is f1, the focal length of the imaging optical lens is f, the radius of curvature of the object-side surface of the first lens is R1, the radius of curvature of the image-side surface of the first lens is R2, the axial thickness of the first lens is d1, and the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: 0.86≤f1 / f≤1.07; -1.78≤(R1+R2) / (R1-R2)≤-1.60; 0.14≤d1 / TTL≤0.
16.
5. 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 second lens has a focal length of f2, the imaging optical lens has a focal length of f, the object-side radius of curvature of the second lens is R3, the image-side radius of curvature of the second lens is R4, the axial thickness of the second lens is d3, and the total optical length of the imaging optical lens is TTL, and satisfies the following relationship: -4.25≤f² / f≤-1.91; 2.65≤(R3+R4) / (R3-R4)≤5.16; 0.04≤d3 / TTL≤0.
06.
6. 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 third lens has a focal length of f3, the camera optical lens has a focal length of f, and the total optical length of the camera optical lens is TTL, and satisfies the following relationship: 4.35≤f³ / f≤6.82; 0.10≤d5 / TTL≤0.
13.
7. 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 focal length of the camera optical lens is f, the radius of curvature of the object side of the fourth lens is R7, the radius of curvature of the image side of the fourth lens is R8, and the total optical length of the camera optical lens is TTL, and satisfies the following relationship: 1.30≤f4 / f≤1.51; 1.25≤(R7+R8) / (R7-R8)≤1.76; 0.14≤d7 / TTL≤0.
18.
8. 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 concave at the paraxial position. The focal length of the camera optical lens is f, the on-axis thickness of the fifth lens is d9, and the total optical length of the camera optical lens is TTL, and the following relationship is satisfied: -0.93≤f5 / f≤-0.82; 1.76≤(R9+R10) / (R9-R10)≤2.41; 0.08≤d9 / TTL≤0.
10.
9. The camera optical lens according to claim 1, characterized in that, The aperture number of the camera optical lens is FNO, and it satisfies the following relationship: FNO≤1.
88.
10. The camera optical lens according to claim 1, characterized in that, The field of view of the camera optical lens is FOV, and satisfies the following relationship: 76.87°≤FOV.