Camera lens

Abstract

The application relates to the field of optical lenses and discloses a camera optical lens which comprises, in order from the object side to the image side, a first lens, a second lens, a third lens, a fourth lens and a fifth lens; the first lens has positive refractive power; the focal length of the camera optical lens is f, the focal length of the first lens is f1, the on-axis thickness of the first lens is d1, the on-axis distance from the image side of the first lens to the object side of the second lens is d2, the on-axis thickness of the fifth lens is d9, 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, 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, the central curvature radius of the object side of the fifth lens is R9, and the following relationships are met: 0.70 <= f1 / f <= 0.90; 2.50 <= d1 / d2 <= 7.50; -20.00 <= R3 / R4 <= -3.00; 3.00 <= (R5+R6) / (R5-R6) <= 30.00; -15.00 <= R9 / d9 <= -5.00.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical lens, in particular to a camera optical lens suitable for smart phones, digital cameras and other portable terminal devices, as well as monitors, PC lenses and other camera devices. BACKGROUND

[0002] In recent years, with the rise of various smart devices, the demand for small-sized camera optical lenses is increasing, and due to the reduction of the pixel size of photosensitive devices, in addition to the current trend of electronic products being light and thin, the small-sized camera optical lens with good imaging quality has become the mainstream in the market. In order to obtain better imaging quality, a multi-piece lens structure is often used. With the development of technology and the increasing of user's diversified needs, under the condition that the pixel area of the photosensitive device is continuously reduced and the requirement of the system for imaging quality is continuously improved, a five-piece lens structure gradually appears in the lens design. There is an urgent need for a wide-angle camera lens with excellent optical characteristics, small size and fully corrected aberration. SUMMARY

[0003] In view of the above problems, the purpose of the present application is to provide a camera optical lens which has good optical performance while meeting the design requirements of large aperture, ultra-thin and wide-angle.

[0004] To solve the above technical problems, the embodiment of the present application provides a camera optical lens, which comprises, in 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 refractive power, a fourth lens with positive refractive power, and a fifth lens with negative refractive power; wherein the focal length of the camera optical lens is f, the focal length of the first lens is f1, the on-axis thickness of the first lens is d1, the on-axis distance from the image side of the first lens to the object side of the second lens is d2, the on-axis thickness of the fifth lens is d9, 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, 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, the central curvature radius of the object side of the fifth lens is R9, and the following relationships are satisfied: 0.70≤f1 / f≤0.90; 2.50≤d1 / d2≤7.50; -20.00≤R3 / R4≤-3.00; 3.00≤(R5+R6) / (R5-R6)≤30.00; -15.00≤R9 / d9≤-5.00.

[0005] Preferably, an on-axis thickness of the third lens is d5, an on-axis distance from an image side surface of the third lens to an object side surface of the fourth lens is d6, and the following relationship is satisfied: 1.20≤d6 / d5≤3.00.

[0006] Preferably, an object side surface of the first lens is convex at a paraxial region, an image side surface of the first lens is concave at the paraxial region, a central curvature radius of the object side surface of the first lens is R1, a central curvature radius of the image side surface of the first lens is R2, an overall optical length of the camera optical lens is TTL, and the following relationship is satisfied: -3.32≤(R1+R2) / (R1-R2)≤-0.84; 0.05≤d1 / TTL≤0.23.

[0007] Preferably, an object side surface of the second lens is concave at a paraxial region, an image side surface of the second lens is concave at the paraxial region, a focal length of the second lens is f2, an on-axis thickness of the second lens is d3, an overall optical length of the camera optical lens is TTL, and the following relationship is satisfied: -4.26≤f2 / f≤-0.89; 0.01≤d3 / TTL≤0.06.

[0008] Preferably, a focal length of the third lens is f3, an on-axis thickness of the third lens is d5, an overall optical length of the camera optical lens is TTL, and the following relationship is satisfied: -202.28≤f3 / f≤98.05; 0.02≤d5 / TTL≤0.09.

[0009] Preferably, an image side surface of the fourth lens is convex at a paraxial region; a focal length of the fourth lens is f4, a central curvature radius of an object side surface of the fourth lens is R7, a central curvature radius of an image side surface of the fourth lens is R8, an on-axis thickness of the fourth lens is d7, an overall optical length of the camera optical lens is TTL, and the following relationship is satisfied: 0.26≤f4 / f≤0.96; 0.40≤(R7+R8) / (R7-R8)≤1.74; 0.08≤d7 / TTL≤0.40.

[0010] Preferably, an object side surface of the fifth lens is concave at a paraxial region, an image side surface of the fifth lens is concave at the paraxial region; a focal length of the fifth lens is f5, a central curvature radius of the image side surface of the fifth lens is R10, an overall optical length of the camera optical lens is TTL, and the following relationship is satisfied: -0.98≤f5 / f≤-0.27; 0.19≤(R9+R10) / (R9-R10)≤0.85; 0.03≤d9 / TTL≤0.19.

[0011] Preferably, the total optical length of the photographing optical lens is TTL, the image height of the photographing optical lens is IH, and the following relationship is satisfied: TTL / IH ≤ 1.46.

[0012] Preferably, the diagonal direction field angle of the photographing optical lens is FOV, and the following relationship is satisfied: FOV ≥ 76.64°.

[0013] Preferably, the aperture value of the photographing optical lens is FNO, and the following relationship is satisfied: FNO ≤ 1.91.

[0014] The photographing optical lens according to the present application has excellent optical characteristics, and has the characteristics of large aperture, wide angle, and ultra-thin, and is particularly suitable for mobile phone photographing lens assemblies and WEB photographing lenses composed of high-pixel CCD, CMOS, and the like. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort based on these drawings.

[0016] Figure 1 is a structural schematic diagram of a photographing optical lens according to a first embodiment of the present application;

[0017] Figure 2 is an axial aberration schematic diagram of the photographing optical lens shown in Figure 1

[0018] is a lateral chromatic aberration of magnification schematic diagram of the photographing optical lens shown in Figure 3 Figure 1 is a field curvature and distortion schematic diagram of the photographing optical lens shown in

[0019] Figure 4 Figure 1 is a structural schematic diagram of a photographing optical lens according to a second embodiment of the present application;

[0020] Figure 5 is an axial aberration schematic diagram of the photographing optical lens shown in

[0021] Figure 6 is a lateral chromatic aberration of magnification schematic diagram of the photographing optical lens shown in Figure 5

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

[0023] Figure 8 ​​​is Figure 5 is a field curvature and distortion diagram of the photographing optical lens shown in FIG. 1;

[0024] Figure 9 is a structure diagram of the photographing optical lens of the third embodiment of the present application;

[0025] Figure 10 is Figure 9 is an axial aberration diagram of the photographing optical lens shown in FIG. 1;

[0026] Figure 11 is Figure 9 is a lateral chromatic aberration diagram of the photographing optical lens shown in FIG. 1;

[0027] Figure 12 is Figure 9 is a field curvature and distortion diagram of the photographing optical lens shown in FIG. 1;

[0028] Figure 13 is a structure diagram of the photographing optical lens of the fourth embodiment of the present application;

[0029] Figure 14 is Figure 13 is an axial aberration diagram of the photographing optical lens shown in FIG. 1;

[0030] Figure 15 is Figure 13 is a lateral chromatic aberration diagram of the photographing optical lens shown in FIG. 1;

[0031] Figure 16 is Figure 13 is a field curvature and distortion diagram of the photographing optical lens shown in FIG. 1;

[0032] Figure 17 is a structure diagram of the photographing optical lens of the comparative embodiment;

[0033] Figure 18 is Figure 17 is an axial aberration diagram of the photographing optical lens shown in FIG. 1;

[0034] Figure 19 is Figure 17 is a lateral chromatic aberration diagram of the photographing optical lens shown in FIG. 1;

[0035] Figure 20 is Figure 17 is a field curvature and distortion diagram of the photographing optical lens shown in FIG. 1. DETAILED DESCRIPTION

[0036] For the purpose of making the object, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in detail below with reference to the drawings. However, those skilled in the art can understand that in the embodiments of the present application, many technical details are presented in order to make the readers better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed by the present application can be implemented.

[0037] (First embodiment)

[0038] Referring to the drawings, the present application provides a camera optical lens 10. Figure 1 The camera optical lens 10 of the first embodiment of the present application is shown, which includes five lenses in total. Specifically, the camera optical lens 10, from the object side to the image side, is in order: an aperture S1, a first lens L1, 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 provided between the fifth lens L5 and the image plane Si.

[0039] In the present embodiment, the first lens L1 is of plastic material, the second lens L2 is of plastic material, the third lens L3 is of plastic material, the fourth lens L4 is of plastic material, and the fifth lens L5 is of plastic material. In other alternative embodiments, each lens can also be of other materials.

[0040] In the present embodiment, the focal length of the camera optical lens 10 is defined as f, and the focal length of the first lens L1 is defined as f1, satisfying the following relationship 0.70≤f1 / f≤0.90, which defines the ratio of the focal length f1 of the first lens L1 to the focal length f of the camera optical lens 10, effectively balances the field curvature of the system, and makes the field curvature deviation of the central field of view less than 30μm.

[0041] The on-axis thickness of the first lens L1 is defined as d1, and the on-axis distance from the image side surface of the first lens L1 to the object side surface of the second lens L2 is defined as d2, satisfying the following relationship 2.50≤d1 / d2≤7.50, which defines the ratio of the on-axis thickness d1 of the first lens L1 to the on-axis distance d2 from the image side surface of the first lens L1 to the object side surface of the second lens L2, which is helpful to compress the total length of the optical system within the conditional range, achieving the effect of ultra-thin.

[0042] The central curvature radius of the object side surface of the second lens L2 is defined as R3, and the central curvature radius of the image side surface of the second lens L2 is defined as R4, satisfying the following relationship -20.00≤R3 / R4≤-3.00, which defines the shape of the second lens L2, reduces the degree of deflection of light, effectively corrects chromatic aberration, and makes the chromatic aberration |LC|≤1.6μm.

[0043] The central radius of curvature of the object side surface of the third lens L3 is defined as R5, and the central radius of curvature of the image side surface of the third lens L3 is defined as R6, and the following relationship is satisfied: 3.00≤(R5+R6) / (R5-R6)≤30.00, which defines the shape of the third lens L3, is beneficial to correct the astigmatism and distortion of the photographing lens, so that the distortion |Distortion|≤7%, and the possibility of dark corner generation is reduced.

[0044] The central radius of curvature of the object side surface of the third lens L3 is defined as R5, and the central radius of curvature of the image side surface of the third lens L3 is defined as R6, and the following relationship is satisfied: 3.00≤(R5+R6) / (R5-R6)≤30.00, which defines the shape of the third lens L3, is beneficial to correct the astigmatism and distortion of the photographing lens, so that the distortion |Distortion|≤7%, and the possibility of dark corner generation is reduced.

[0045] The central radius of curvature of the object side surface of the third lens L3 is defined as R5, and the central radius of curvature of the image side surface of the third lens L3 is defined as R6, and the following relationship is satisfied: 3.00≤(R5+R6) / (R5-R6)≤30.00, which defines the shape of the third lens L3, is beneficial to correct the astigmatism and distortion of the photographing lens, so that the distortion |Distortion|≤7%, and the possibility of dark corner generation is reduced.

[0046] In the embodiment, the object side surface of the first lens L1 is convex at the paraxial region, the image side surface is concave at the paraxial region, and the first lens L1 has positive refractive power. In other alternative embodiments, the object side surface and the image side surface of the first lens L1 can also be provided with other concave and convex distribution conditions.

[0047] The central radius of curvature of the object side surface of the third lens L3 is defined as R5, and the central radius of curvature of the image side surface of the third lens L3 is defined as R6, and the following relationship is satisfied: 3.00≤(R5+R6) / (R5-R6)≤30.00, which defines the shape of the third lens L3, is beneficial to correct the astigmatism and distortion of the photographing lens, so that the distortion |Distortion|≤7%, and the possibility of dark corner generation is reduced.

[0048] The central radius of curvature of the object side surface of the third lens L3 is defined as R5, and the central radius of curvature of the image side surface of the third lens L3 is defined as R6, and the following relationship is satisfied: 3.00≤(R5+R6) / (R5-R6)≤30.00, which defines the shape of the third lens L3, is beneficial to correct the astigmatism and distortion of the photographing lens, so that the distortion |Distortion|≤7%, and the possibility of dark corner generation is reduced.

[0049] In the embodiment, the object side surface of the second lens L2 is concave at the paraxial region, the image side surface of the second lens L2 is concave at the paraxial region, and the second lens L2 has a negative refractive power. In other alternative embodiments, the object side surface and the image side surface of the second lens L2 can also be provided with other concave or convex distribution.

[0050] The focal length of the imaging optical lens 10 is defined as f, and the focal length of the second lens is defined as f2, and the following relationship is satisfied: -4.26≤f2 / f≤-0.89. Through reasonable distribution of optical power, the system has better imaging quality and lower sensitivity. Preferably, -2.66≤f2 / f≤-1.12 is satisfied.

[0051] The on-axis thickness of the second lens L2 is defined as d3, and the total optical length of the imaging optical lens 10 is defined as TTL, and the following relationship is satisfied: 0.01≤d3 / TTL≤0.06. Within the conditional range, it is beneficial to achieve ultra-thin. Preferably, 0.02≤d3 / TTL≤0.05 is satisfied.

[0052] In the embodiment, the object side surface of the third lens L3 is concave at the paraxial region, the image side surface of the third lens L3 is convex at the paraxial region, and the third lens L3 has a positive refractive power. In other alternative embodiments, the object side surface and the image side surface of the third lens L3 can also be provided with other concave or convex distribution, and the third lens L3 can also have a negative refractive power.

[0053] The focal length of the imaging optical lens 10 is defined as f, and the focal length of the third lens L3 is defined as f3, and the following relationship is satisfied: -202.28≤f3 / f≤98.05. Through reasonable distribution of optical power, the system has better imaging quality and lower sensitivity. Preferably, -126.42≤f3 / f≤78.44 is satisfied.

[0054] The on-axis thickness of the third lens L3 is defined as d5, and the total optical length of the imaging optical lens 10 is defined as TTL, and the following relationship is satisfied: 0.02≤d5 / TTL≤0.09. Within the conditional range, it is beneficial to achieve ultra-thin. Preferably, 0.04≤d5 / TTL≤0.08 is satisfied.

[0055] In the embodiment, the object side surface of the fourth lens L4 is concave at the paraxial region, the image side surface of the fourth lens L4 is convex at the paraxial region, and the fourth lens L4 has a positive refractive power. In other alternative embodiments, the object side surface and the image side surface of the fourth lens L4 can also be provided with other concave or convex distribution.

[0056] 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: 0.26 ≤ f4 / f ≤ 0.96. Through reasonable allocation of optical power, the system has better imaging quality and lower sensitivity. Preferably, it satisfies 0.42 ≤ f4 / f ≤ 0.77.

[0057] The central radius of curvature of the object-side surface of the fourth lens L4 is R7, and the central radius of curvature of the image-side surface of the fourth lens L4 is R8, satisfying the following relationship: 0.40≤(R7+R8) / (R7-R8)≤1.74. This defines the shape of the fourth lens L4. Within this range, with the development of ultra-thin wide-angle lenses, it is beneficial for correcting aberrations in off-axis drawing angles. Preferably, it satisfies 0.64≤(R7+R8) / (R7-R8)≤1.39.

[0058] 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: 0.08≤d7 / TTL≤0.40. Within this range, it is beneficial to achieve ultra-thinness. Preferably, it satisfies 0.13≤d7 / TTL≤0.32.

[0059] In this embodiment, the object-side surface of the fifth lens L5 is concave near the axis, and the image-side surface is also concave near the axis, thus the fifth lens L5 has negative 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.

[0060] 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: -0.98 ≤ f5 / f ≤ -0.27. This limitation on the fifth lens L5 effectively makes the light angle of the camera optical lens 10 smoother, reducing tolerance sensitivity. Preferably, it satisfies -0.61 ≤ f5 / f ≤ -0.33.

[0061] The central radius of curvature of the object-side surface of the fifth lens L5 is R9, and the central radius of curvature of the image-side surface of the fifth lens L5 is R10, satisfying the following relationship: 0.19≤(R9+R10) / (R9-R10)≤0.85, which defines the shape of the fifth lens L5. Within this range, with the development of ultra-thin wide-angle lenses, it is beneficial for correcting aberrations in off-axis drawing angles. Preferably, it satisfies 0.30≤(R9+R10) / (R9-R10)≤0.68.

[0062] 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: 0.03≤d9 / TTL≤0.19. Within this range, it is beneficial to achieve ultra-thinness. Preferably, it satisfies 0.05≤d9 / TTL≤0.15.

[0063] In this embodiment, the image height of the camera optical lens 10 is IH, which is half the diagonal length of the effective pixel area on the image plane Si, i.e., the distance between the image of the object after imaging in the optical system and the direction perpendicular to the optical axis; the total optical length of the camera optical lens 10 is TTL; and it satisfies the following relationship: TTL / IH≤1.46, which is beneficial for achieving ultra-thinness. Preferably, TTL / IH≤1.42 is satisfied.

[0064] In this embodiment, the field of view (FOV) of the camera optical lens 10 in the diagonal direction is greater than or equal to 76.64°, thereby achieving wide-angle viewing. Preferably, the field of view (FOV) of the camera optical lens 10 in the diagonal direction is greater than or equal to 77.42°.

[0065] In this embodiment, the aperture value FNO of the camera optical lens 10 is less than or equal to 1.91, 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 1.87.

[0066] 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 mobile phone camera lens assemblies and WEB camera lenses composed of high-pixel CCD, CMOS and other camera elements.

[0067] 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.

[0068] TTL: Total optical length (axial distance from the object surface of the first lens L1 to the image plane Si), in mm;

[0069] Aperture value FNO: refers to the ratio of the effective focal length to the entrance pupil diameter of a camera lens.

[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. Specific possible implementation schemes are described below.

[0071] Tables 1 and 2 show the design data of the camera optical lens 10 according to the first embodiment of the present invention.

[0072] Table 1

[0073]

[0074] The meanings of each symbol are as follows.

[0075] S1: Aperture;

[0076] R: Radius of curvature at the center of the optical surface;

[0077] R1: The central radius of curvature of the object-side surface of the first lens L1;

[0078] R2: The central radius of curvature of the image-side surface of the first lens L1;

[0079] R3: The central radius of curvature of the object-side surface of the second lens L2;

[0080] R4: The central radius of curvature of the image-side surface of the second lens L2;

[0081] R5: The central radius of curvature of the object-side surface of the third lens L3;

[0082] R6: The central radius of curvature of the image-side surface of the third lens L3;

[0083] R7: The central radius of curvature of the object side surface of the fourth lens L4;

[0084] R8: The central radius of curvature of the image-side surface of the fourth lens L4;

[0085] R9: The central radius of curvature of the object-side surface of the fifth lens L5;

[0086] R10: The central radius of curvature of the image-side surface of the fifth lens L5;

[0087] R11: The center radius of curvature of the object side surface of the optical filter GF;

[0088] R12: Radius of curvature of the center of the image side of the optical filter GF;

[0089] d: Axial thickness of the lens, axial distance between lenses;

[0090] d0: The on-axis distance from aperture S1 to the object-side surface of the first lens L1;

[0091] d1: On-axis thickness of the first lens L1;

[0092] 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;

[0093] d3: On-axis thickness of the second lens L2;

[0094] d4: The axial distance from the image-side surface of the second lens L2 to the object-side surface of the third lens L3;

[0095] d5: On-axis thickness of the third lens L3;

[0096] 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;

[0097] d7: On-axis thickness of the fourth lens L4;

[0098] 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;

[0099] d9: On-axis thickness of the fifth lens L5;

[0100] 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;

[0101] d11: On-axis thickness of the optical filter GF;

[0102] d12: The axial distance from the image-side surface of the optical filter GF to the image plane Si;

[0103] nd: Refractive index of the d-line (the d-line represents green light with a wavelength of 550 nm);

[0104] nd1: The refractive index of the d-line of the first lens L1;

[0105] nd2: The refractive index of the d-line of the second lens L2;

[0106] nd3: The refractive index of the d-line of the third lens L3;

[0107] nd4: The refractive index of the d-line of the fourth lens L4;

[0108] nd5: The refractive index of the d-line of the fifth lens L5;

[0109] ndg: The refractive index of the d-line of the optical filter GF;

[0110] vd: Abbe number;

[0111] v1: Abbe number of the first lens L1;

[0112] v2: Abbe number of the second lens L2;

[0113] v3: Abbe number of the third lens L3;

[0114] v4: Abbe number of the fourth lens L4;

[0115] v5: Abbe number of the fifth lens L5;

[0116] vg: Abbe number of the optical filter GF.

[0117] Table 2 shows the aspherical data of each lens in the camera optical lens 10 of the first embodiment of the present invention.

[0118] Table 2

[0119]

[0120] 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).

[0121] 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 (1)

[0122] 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).

[0123] 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.

[0124] Table 3

[0125]

[0126] Table 4

[0127]

[0128] Figure 2 , Figure 3 Axial aberration and magnification chromatic aberration are shown respectively after light with wavelengths of 650nm, 610nm, 555nm, 510nm and 470nm passes through the camera optical lens 10 of the first embodiment. Figure 4 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 555nm passes through the camera optical lens 10 of the first embodiment. Figure 4 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0129] Table 21, which appears later, shows the values ​​corresponding to the various numerical values ​​and parameters specified in the conditional expressions in each of the first, second, third, and fourth embodiments.

[0130] As shown in Table 21, the first embodiment satisfies all the conditional expressions.

[0131] In this embodiment, the entrance pupil diameter (ENPD) of the camera optical lens 10 is 2.307 mm, the image height (IH) is 3.594 mm, and the field of view (FOV) in the diagonal direction is 78.80°. 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.

[0132] (Second Implementation)

[0133] 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.

[0134] Figure 5 The image shows the camera optical lens 20 according to the second embodiment of the present invention.

[0135] Tables 5 and 6 show the design data of the camera optical lens 20 according to the second embodiment of the present invention.

[0136] Table 5

[0137]

[0138] Table 6 shows the aspherical data of each lens in the camera optical lens 20 of the second embodiment of the present invention.

[0139] Table 6

[0140]

[0141] 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.

[0142] Table 7

[0143]

[0144] Table 8

[0145]

[0146] Figure 6 , Figure 7 Axial aberration and magnification chromatic aberration are shown respectively after light with wavelengths of 650nm, 610nm, 555nm, 510nm and 470nm passes through the camera optical lens 20 of the second embodiment. Figure 8 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 555nm passes through the camera optical lens 20 of the second embodiment. Figure 8 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0147] As shown in Table 21, the second embodiment satisfies each conditional expression.

[0148] In this embodiment, the entrance pupil diameter (ENPD) of the camera optical lens 20 is 2.335 mm, the image height (IH) is 3.594 mm, and the field of view (FOV) in the diagonal direction is 78.20°. 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.

[0149] (Third implementation method)

[0150] 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.

[0151] Figure 9 The image shown is the camera optical lens 30 according to the third embodiment of the present invention.

[0152] Tables 9 and 10 show the design data of the camera optical lens 30 according to the third embodiment of the present invention.

[0153] Table 9

[0154]

[0155] Table 10 shows the aspherical data of each lens in the camera optical lens 30 of the third embodiment of the present invention.

[0156] Table 10

[0157]

[0158] 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.

[0159] Table 11

[0160]

[0161] Table 12

[0162]

[0163] Figure 10 , Figure 11 Axial aberration and magnification chromatic aberration are shown respectively after light with wavelengths of 650nm, 610nm, 555nm, 510nm and 470nm passes through the camera optical lens 30 of the third embodiment. Figure 12 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 555nm passes through the camera optical lens 30 of the third embodiment. Figure 12 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0164] 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.

[0165] In this embodiment, the entrance pupil diameter (ENPD) of the camera optical lens 30 is 2.293 mm, the image height (IH) is 3.594 mm, and the field of view (FOV) in the diagonal direction is 78.40°. 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.

[0166] (Fourth Implementation)

[0167] 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.

[0168] The object-side surface of the third lens L3 is convex near the axis, and the image-side surface is concave near the axis. The third lens L3 has negative refractive power. The object-side surface of the fourth lens L4 is convex near the axis.

[0169] Figure 13 The image shown is the camera optical lens 40 according to the fourth embodiment of the present invention.

[0170] Tables 13 and 14 show the design data of the camera optical lens 40 according to the fourth embodiment of the present invention.

[0171] Table 13

[0172]

[0173] Table 14 shows the aspherical data of each lens in the camera optical lens 40 of the fourth embodiment of the present invention.

[0174] Table 14

[0175]

[0176] 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.

[0177] Table 15

[0178]

[0179] Table 16

[0180]

[0181] Figure 14 , Figure 15 Axial aberration and magnification chromatic aberration are shown respectively after light with wavelengths of 650nm, 610nm, 555nm, 510nm and 470nm passes through the camera optical lens 40 of the fourth embodiment. Figure 16 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 555nm passes through the camera optical lens 40 of the fourth embodiment. Figure 16 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0182] 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.

[0183] In this embodiment, the entrance pupil diameter (ENPD) of the camera optical lens 40 is 2.145 mm, the image height (IH) is 3.594 mm, and the field of view (FOV) in the diagonal direction is 80.00°. 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.

[0184] (Comparative implementation methods)

[0185] The symbols in the comparative implementation method have the same meanings as those in the first implementation method; only the differences are listed below.

[0186] The object side of the third lens L3 is convex near the axis, and the image side is concave near the axis. The third lens L3 has negative refractive power.

[0187] The object-side surface of the fourth lens L4 is convex near the axis.

[0188] Figure 17 The image shown is a camera optical lens 50 according to a comparative embodiment of the present invention.

[0189] Tables 17 and 18 show the design data of the camera optical lens 50 of the comparative embodiment.

[0190] Table 17

[0191]

[0192] Table 18 shows the aspherical data of each lens in the camera optical lens 50 of the comparative embodiment.

[0193] Table 18

[0194]

[0195] 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.

[0196] Table 19

[0197]

[0198] Table 20

[0199]

[0200] Figure 18 , Figure 19 The diagrams show axial aberration and magnification chromatic aberration of light with wavelengths of 650nm, 610nm, 555nm, 510nm and 470nm after passing through the camera optical lens 50 of the comparative embodiment. Figure 20 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 555nm passes through the camera optical lens 50 of the 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.

[0201] Table 21 below lists the values ​​of each conditional expression in the comparative embodiment according to the above conditional expressions. Obviously, the camera optical lens 50 of the comparative embodiment does not satisfy the above conditional expression 0.70≤f1 / f≤0.90.

[0202] In the comparative embodiment, the entrance pupil diameter ENPD of the camera optical lens 50 is 2.092mm, the image height IH is 3.594mm, and the field of view (FOV) in the diagonal direction is 80.58°. The camera optical lens 50 does not meet the design requirements of large aperture, wide angle, and ultra-thin design.

[0203] Table 21

[0204]

[0205] 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 consists of, 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 refractive power, a fourth lens with positive refractive power, and a fifth lens with negative refractive power. Wherein, 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 object-side surface of the second lens is concave at the paraxial position, and the image-side surface of the second lens is concave at the paraxial position; the image-side surface of the fourth lens is convex at the paraxial position; the object-side surface of the fifth lens is concave at the paraxial position, and the image-side surface of the fifth lens is concave at the paraxial position. The camera optical lens has a focal length of f, the first lens has a focal length of f1, the first lens has an axial thickness of d1, the axial distance from the image-side surface of the first lens to the object-side surface of the second lens is d2, the fifth lens has an axial thickness of d9, 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, 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, the central radius of curvature of the object-side surface of the fifth lens is R9, and the aperture value of the camera optical lens is FNO, satisfying the following relationship: 0.70≤f1 / f≤0.90; 2.50≤d1 / d2≤7.50; -20.00≤R3 / R4≤-3.00; 3.00≤(R5+R6) / (R5-R6)≤30.00; -15.00≤R9 / d9≤-5.00; 1.85≤FNO≤1.

86.

2. The camera optical lens according to claim 1, characterized in that, The axial thickness of the third lens is d5, the axial distance from the image side of the third lens to the object side of the fourth lens is d6, and the following relationship is satisfied: 1.20≤d6 / d5≤3.

00.

3. The camera optical lens according to claim 1, characterized in that, The center radius of curvature of the object-side surface of the first lens is R1, the center radius of curvature of the image-side surface of the first lens is R2, and the total optical length of the imaging optical lens is TTL, satisfying the following relationship: -3.32≤(R1+R2) / (R1-R2)≤-0.84; 0.05≤d1 / TTL≤0.

23.

4. The camera optical lens according to claim 1, characterized in that, The focal length of the second lens is f2, the on-axis thickness of the second lens is d3, and the total optical length of the imaging optical lens is TTL, satisfying the following relationship: -4.26≤f² / f≤-0.89; 0.01≤d3 / TTL≤0.

06.

5. The camera optical lens according to claim 1, characterized in that, The third lens has a focal length of f3, an on-axis thickness of d5, and a total optical length of TTL, satisfying the following relationship: -202.28≤f3 / f≤98.05; 0.02≤d5 / TTL≤0.

09.

6. The camera optical lens according to claim 1, characterized in that, The fourth lens has a focal length of f4, a central radius of curvature of the object side of the fourth lens of R7, a central radius of curvature of the image side of the fourth lens of R8, an on-axis thickness of d7, and a total optical length of TTL, satisfying the following relationship: 0.26≤f4 / f≤0.96; 0.40≤(R7+R8) / (R7-R8)≤1.74; 0.08≤d7 / TTL≤0.

40.

7. The camera optical lens according to claim 1, characterized in that, The fifth lens has a focal length of f5, a central radius of curvature of the image side surface of the fifth lens of R10, and a total optical length of TTL for the imaging optical lens, and satisfies the following relationship: -0.98≤f5 / f≤-0.27; 0.19≤(R9+R10) / (R9-R10)≤0.85; 0.03≤d9 / TTL≤0.

19.

8. 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 is IH, and they satisfy the following relationship: ≤TTL / IH ≤1.

46.

9. The camera optical lens according to claim 1, characterized in that, The field of view (FOV) of the camera optical lens along its diagonal direction is defined as follows: 76.64°≤FOV≤80.00°.

Images