Photographing optical lens

Abstract

The present invention relates to the field of optical lenses. Disclosed is a photographing optical lens, comprising a total of five lenses. From an object side to an image side, the five lenses sequentially include: a first lens having positive refractive power, a second lens having negative refractive power, a third lens having negative refractive power, a fourth lens having positive refractive power, and a fifth lens having negative refractive power. The on-axis distance from an image-side surface of the third lens to an object-side surface of the fourth lens is d6, the total optical length of the photographing optical lens is TTL, the focal length of the first lens is f1, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the central radii of curvature of an object-side surface and the image-side surface of the third lens in a paraxial region are R5 and R6 respectively, the central radii of curvature of an object-side surface and an image-side surface of the fifth lens in a paraxial region are R9 and R10 respectively, the focal length of the photographing optical lens is f, and the following relational expressions are satisfied: 0.20≤d6 / TTL≤0.36; 6.00≤(f4-f5) / f1≤10.10; -1.00≤(R5+R6) / (R5-R6)≤-0.70; and -0.80≤(R9+R10) / f≤-0.39.

Description

Camera optical lens 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 surveillance cameras, PC lenses, vehicle-mounted lenses and other camera devices. BACKGROUND

[0002] In recent years, with the rise of various intelligent devices, the demand for miniaturized 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 miniaturized camera optical lens with good imaging quality has become the mainstream in the market. In order to obtain better imaging quality, multi-piece lens structure is often used. With the development of technology and the increasing of user's diversified needs, under the condition of continuous reduction of the pixel area of photosensitive devices and the increasing of the requirement of imaging quality, five-piece lens structure gradually appears in the lens design. There is an urgent need for long-focus camera lenses with excellent optical characteristics, large aperture, long focal length, ultra-thin and fully corrected aberration.

[0003] SUMMARY

[0004] 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 full correction of aberration, large aperture, long focal length and ultra-thin.

[0005] To achieve the above purpose, the technical scheme of the present application provides a camera optical lens, which comprises five lenses, the five lenses are arranged in order from the object side to the image side as follows: a first lens with positive refractive power, a second lens with negative refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, and a fifth lens with negative refractive power; wherein, the axial distance from the image side surface of the third lens to the object side surface of the fourth lens is d6, the total optical length of the camera optical lens is TTL, the focal length of the first lens is f1, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the central curvature radius of the object side surface of the third lens at the near axis is R5, the central curvature radius of the image side surface of the third lens at the near axis is R6, the central curvature radius of the object side surface of the fifth lens at the near axis is R9, the central curvature radius of the image side surface of the fifth lens at the near axis is R10, the focal length of the camera optical lens is f, and the following relationships are satisfied:

[0006] 0.20≤d6 / TTL≤0.36;

[0007] 6.00≤(f4-f5) / f1≤10.10;

[0008] -1.00 < (R5+R6) / (R5-R6) < -0.70;

[0009] -0.80 < (R9+R10) / (R9-R10) < -0.39.

[0010] Preferably, the on-axis thickness of the first lens is d1, the on-axis thickness of the second lens is d3, and the on-axis thickness of the third lens is d5, and the following relationship is met:

[0011] 1.50 < d1 / (d3+d5) < 3.50.

[0012] Preferably, the effective radius of the object side surface of the first lens is SD11, the on-axis distance between the intersection of the object side surface of the first lens and the optical axis and the effective radius vertex of the object side surface of the first lens is SAG11, the image height of the camera optical lens at 1.0 field of view is IH, and the following relationship is met: 0.39 < SD11*SAG11 / IH < 0.65.

[0013] Preferably, the object side surface of the first lens is convex at the paraxial region, and the image side surface of the first lens is convex at the paraxial region; the central curvature radius of the object side surface of the first lens at the paraxial region is R1, the central curvature radius of the image side surface of the first lens at the paraxial region is R2, the on-axis thickness of the first lens is d1, and the following relationship is met:

[0014] 0.18 < f1 / f < 0.65;

[0015] -1.44 < (R1+R2) / (R1-R2) < -0.42;

[0016] 0.08 < d1 / TTL < 0.32.

[0017] Preferably, the object side surface of the second lens is convex at the paraxial region, and the image side surface of the second lens is concave at the paraxial region; the focal length of the second lens is f2, the central curvature radius of the object side surface of the second lens at the paraxial region is R3, the central curvature radius of the image side surface of the second lens at the paraxial region is R4, the on-axis thickness of the second lens is d3, and the following relationship is met:

[0018] -1.89 < f2 / f < -0.49;

[0019] 0.75 < (R3+R4) / (R3-R4) < 5.28;

[0020] 0.02 < d3 / TTL < 0.10.

[0021] Preferably, the object side surface of the third lens is concave at the paraxial region, the image side surface of the third lens is concave at the paraxial region; the focal length of the third lens is f3, the on-axis thickness of the third lens is d5, and the following relations are satisfied:

[0022] -2.84≤f3 / f≤-0.35;

[0023] 0.01≤d5 / TTL≤0.06.

[0024] Preferably, the object side surface of the fourth lens is concave at the paraxial region, the image side surface of the fourth lens is convex at the paraxial region; the central curvature radius of the object side surface of the fourth lens at the paraxial region is R7, the central curvature radius of the image side surface of the fourth lens at the paraxial region is R8, the on-axis thickness of the fourth lens is d7, and the following relations are satisfied:

[0025] 0.53≤f4 / f≤2.26;

[0026] 1.30≤(R7+R8) / (R7-R8)≤10.54;

[0027] 0.04≤d7 / TTL≤0.14.

[0028] Preferably, the object side surface of the fifth lens is concave at the paraxial region; the image side surface of the fifth lens is convex at the paraxial region; the on-axis thickness of the fifth lens is d9, and the following relations are satisfied:

[0029] -5.46≤f5 / f≤-0.73;

[0030] -16.50≤(R9+R10) / (R9-R10)≤-2.05;

[0031] 0.03≤d9 / TTL≤0.20.

[0032] Preferably, the field of view of the camera optical lens at 1.0 field of view is FOV, and the following relation is satisfied: f / FOV≥8.10.

[0033] Preferably, the aperture value of the camera optical lens is FNO, and the following relation is satisfied: FNO≤2.40.

[0034] The present application has the advantages that the camera optical lens according to the present application has excellent optical characteristics, and has the characteristics of sufficient aberration correction, large aperture, long focus, and ultra-thin, and is particularly suitable for mobile phone camera lens assemblies, WEB camera lenses, and vehicle-mounted lenses composed of high-pixel CCD, CMOS, and other camera elements. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to make the technical solutions in the embodiments of the present application clearer, the accompanying drawings needed in the embodiments will be briefly introduced. Obviously, the accompanying drawings in the following description only need to be some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort, in which:

[0036] Fig. 1 is a structural schematic diagram of a camera optical lens according to a first embodiment of the present application;

[0037] Fig. 2 is an axial aberration schematic diagram of the camera optical lens shown in Fig. 1;

[0038] Fig. 3 is a relative color aberration schematic diagram of the camera optical lens shown in Fig. 1;

[0039] Fig. 4 is a field curvature and distortion schematic diagram of the camera optical lens shown in Fig. 1;

[0040] Fig. 5 is a structural schematic diagram of a camera optical lens according to a second embodiment of the present application;

[0041] Fig. 6 is an axial aberration schematic diagram of the camera optical lens shown in Fig. 5;

[0042] Fig. 7 is a relative color aberration schematic diagram of the camera optical lens shown in Fig. 5;

[0043] Fig. 8 is a field curvature and distortion schematic diagram of the camera optical lens shown in Fig. 5;

[0044] Fig. 9 is a structural schematic diagram of a camera optical lens according to a third embodiment of the present application;

[0045] Fig. 10 is an axial aberration schematic diagram of the camera optical lens shown in Fig. 9;

[0046] Fig. 11 is a relative color aberration schematic diagram of the camera optical lens shown in Fig. 9;

[0047] Fig. 12 is a field curvature and distortion schematic diagram of the camera optical lens shown in Fig. 9;

[0048] Fig. 13 is a structural schematic diagram of a camera optical lens according to a fourth embodiment of the present application;

[0049] Fig. 14 is an axial aberration schematic diagram of the camera optical lens shown in Fig. 13;

[0050] Fig. 15 is a relative color aberration schematic diagram of the camera optical lens shown in Fig. 13;

[0051] Fig. 16 is a field curvature and distortion schematic diagram of the camera optical lens shown in Fig. 13;

[0052] Fig. 17 is a structural schematic diagram of a camera optical lens according to a fifth embodiment of the present application;

[0053] Fig. 18 is an axial aberration diagram of the photographing optical lens shown in Fig. 17;

[0054] Fig. 19 is a lateral chromatic aberration diagram of the photographing optical lens shown in Fig. 17;

[0055] Fig. 20 is a field curvature and distortion diagram of the photographing optical lens shown in Fig. 17. DETAILED DESCRIPTION

[0056] In order to make the objectives, 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 accompanying 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, the technical solutions claimed by the present application can be realized even without these technical details and various changes and modifications based on the following embodiments.

[0057] With reference to Figs. 1-20, the technical solutions of the present application provide a photographing optical lens 10, 20, 30, 40, 50. Figs. 1, 5, 9, 13, 17 show the photographing optical lens 10, 20, 30, 40, 50 of the present application, which comprises five lenses in total. Specifically, the photographing optical lens, in order from the object side to the image side, comprises: a first lens L1, an aperture S1, a second lens L2, a third lens L3, a fourth lens L4, and a fifth lens L5. An optical element such as a filter GF can be arranged between the fifth lens L5 and the image plane Si.

[0058] 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. Each lens can also be made of other materials.

[0059] The axial distance between the image side surface of the third lens L3 and the object side surface of the fourth lens L4 is defined as d6, and the total optical length of the photographing optical lens is defined as TTL, and the following relationship is satisfied: 0.20≤d6 / TTL≤0.36. This defines the ratio of the air gap between the third lens L3 and the fourth lens L4 to the total optical length, which, within the conditional range, helps to compress the total optical length of the system and achieve the effect of ultra-thin.

[0060] The focal length of the first lens L1 is defined as f1, the focal length of the fourth lens L4 is defined as f4, and the focal length of the fifth lens L5 is defined as f5, and the following relationship is satisfied: 6.00≤(f4-f5) / f1≤10.10. This defines the ratio of the focal length difference between the fourth lens and the fifth lens to the focal length of the first lens, which, within the conditional range, can effectively balance the field curvature of the system, so that the field curvature deviation of the central field of view is less than 0.025 mm.

[0061] The central curvature radius of the object side surface of the third lens L3 at the paraxial region is defined as R5, the central curvature radius of the image side surface of the third lens L3 at the paraxial region is defined as R6, and the following relationship is satisfied: -1.00≤(R5+R6) / (R5-R6)≤-0.70, which defines the third lens shape, reduces the degree of deflection of light rays, and effectively corrects chromatic aberration, so that the chromatic aberration |LC|≤1.0 μm.

[0062] The central curvature radius of the object side surface of the fifth lens L5 at the paraxial region is defined as R9, the central curvature radius of the image side surface of the fifth lens L5 at the paraxial region is defined as R10, and the focal length of the imaging optical lens is defined as f, and the following relationship is satisfied: -0.80≤(R9+R10) / f≤-0.39, which defines the fifth lens shape, is conducive to correcting the astigmatism and distortion of the imaging lens, so that the distortion |Distortion|≤1.1%, and the possibility of dark corner generation is reduced.

[0063] In the case of satisfying the above condition, the imaging optical lens 10, 20, 30, 40, 50 has good optical performance while meeting the design requirements of large aperture, long focal length, and ultra-thin design; according to the characteristics of the imaging optical lens 10, 20, 30, 40, 50, the imaging optical lens 10, 20, 30, 40, 50 is especially suitable for mobile phone camera lens assemblies and WEB cameras composed of high-pixel CCD, CMOS, and other imaging elements.

[0064] Based on the above condition and the functions that can be achieved, the characteristics of each lens are further refined as follows.

[0065] The on-axis thickness of the first lens L1 is defined as d1, the on-axis thickness of the second lens L2 is defined as d3, and the on-axis thickness of the third lens L3 is defined as d5, and the following relationship is satisfied: 1.50≤d1 / (d3+d5)≤3.50, which defines the ratio of the on-axis thicknesses of the first lens, the second lens, and the third lens, and is conducive to compressing the total length of the optical system and achieving the effect of ultra-thin design.

[0066] The effective radius of the object side surface of the first lens L1 is defined as SD11, the on-axis distance between the intersection of the object side surface of the first lens L1 and the optical axis and the effective radius vertex of the object side surface of the first lens L1 is defined as SAG11, the image height of the imaging optical lens at 1.0 field of view is defined as IH, and the following relationship is satisfied: 0.39≤SD11*SAG11 / IH≤0.65, which defines the shape of the first lens and is conducive to the processing and assembly of the lens.

[0067] The object side surface of the first lens L1 is convex at the paraxial region, and the image side surface is convex at the paraxial region, and the first lens L1 has positive refractive power. The object side surface and the image side surface of the first lens L1 can also be provided with other concave and convex distribution conditions.

[0068] The focal length f of the camera optical lens and the focal length f1 of the first lens L1 satisfy the following relationship: 0.18≤f1 / f≤0.65, which defines the ratio of the positive refractive power of the first lens L1 to the overall focal length. When in the specified range, the first lens L1 has appropriate positive refractive power, which is beneficial to reducing system aberration, and is also beneficial to the development of the lens towards ultra-thin and wide-angle. Preferably, 0.29≤f1 / f≤0.52 is satisfied.

[0069] The central curvature radius of the object side surface of the first lens L1 at the paraxial region is R1, and the central curvature radius of the image side surface of the first lens L1 at the paraxial region is R2, which satisfy the following relationship: -1.44≤(R1+R2) / (R1-R2)≤-0.42, which reasonably controls the shape of the first lens L1, so that the first lens L1 can effectively correct the system spherical aberration. Preferably, -0.90≤(R1+R2) / (R1-R2)≤-0.52 is satisfied.

[0070] The on-axis thickness of the first lens L1 is d1, and the total optical length of the camera optical lens is TTL, which satisfy the following relationship: 0.08≤d1 / TTL≤0.32, which is beneficial to miniaturization within the conditional range. Preferably, 0.13≤d1 / TTL≤0.26 is satisfied.

[0071] The object side surface of the second lens L2 is convex at the paraxial region, and the image side surface is concave at the paraxial region, and the second lens L2 has negative refractive power. The object side surface and the image side surface of the second lens L2 can also be provided with other concave and convex distribution conditions.

[0072] The focal length of the second lens L2 is f2, which satisfies the following relationship: -1.89≤f2 / f≤-0.49, which controls the negative focal length of the second lens L2 within a reasonable range, which is beneficial to correcting the aberration of the optical system. Preferably, -1.18≤f2 / f≤-0.62 is satisfied.

[0073] The central curvature radius of the object side surface of the second lens L2 at the paraxial region is R3, and the central curvature radius of the image side surface of the second lens L2 at the paraxial region is R4, which satisfy the following relationship: 0.75≤(R3+R4) / (R3-R4)≤5.28, which defines the shape of the second lens L2. When in the range, it is beneficial to correct the on-axis chromatic aberration and other problems with the development of ultra-thin and wide-angle. Preferably, 1.20≤(R3+R4) / (R3-R4)≤4.22 is satisfied.

[0074] The on-axis thickness of the second lens L2 is d3, and the total optical length of the camera optical lens is TTL, and the following relationship is satisfied: 0.02≤d3 / TTL≤0.10, which is within the conditional range, and is conducive to miniaturization. Preferably, 0.03≤d3 / TTL≤0.08 is satisfied.

[0075] The object side surface of the third lens L3 is concave at the near axis, and the image side surface is concave at the near axis. The third lens L3 has a negative refractive power. The object side surface and the image side surface of the third lens L3 can also be provided with other concave and convex distributions.

[0076] The focal length of the camera optical lens is f, and the focal length of the third lens L3 is f3, and the following relationship is satisfied: -2.84≤f3 / f≤-0.35, which is a reasonable distribution of optical power, so that the system has better imaging quality and lower sensitivity. Preferably, -1.77≤f3 / f≤-0.44 is satisfied.

[0077] The on-axis thickness of the third lens L3 is d5, and the total optical length of the camera optical lens is TTL, and the following relationship is satisfied: 0.01≤d5 / TTL≤0.06, which is within the conditional range, and is conducive to miniaturization. Preferably, 0.02≤d5 / TTL≤0.05 is satisfied.

[0078] The object side surface of the fourth lens L4 is concave at the near axis, and the image side surface is convex at the near axis. The fourth lens L4 has a positive refractive power. The object side surface and the image side surface of the fourth lens L4 can also be provided with other concave and convex distributions.

[0079] The focal length of the camera optical lens is f, and the focal length of the fourth lens L4 is f4, and the following relationship is satisfied: 0.53≤f4 / f≤2.26, which is a reasonable distribution of optical power, so that the system has better imaging quality and lower sensitivity. Preferably, 0.85≤f4 / f≤1.81 is satisfied.

[0080] The central curvature radius of the object side surface of the fourth lens L4 at the near axis is R7, and the central curvature radius of the image side surface of the fourth lens L4 at the near axis is R8, and the following relationship is satisfied: 1.30≤(R7+R8) / (R7-R8)≤10.54, which defines the shape of the fourth lens L4. Within the conditional range, with the development of ultra-thin wide-angle, it is conducive to correcting the aberration of the off-axis angle and other problems. Preferably, 2.08≤(R7+R8) / (R7-R8)≤8.43 is satisfied.

[0081] The on-axis thickness of the fourth lens L4 is d7, and the total optical length of the camera optical lens is TTL, and the following relationship is satisfied: 0.04≤d7 / TTL≤0.14, which is within the conditional range, and is conducive to miniaturization. Preferably, 0.06≤d7 / TTL≤0.11 is satisfied.

[0082] The object side of the fifth lens L5 is concave at the near axis, and the image side is convex at the near axis. The fifth lens L5 has a negative refractive power. The object side and the image side of the fifth lens L5 can also be provided with other concave and convex distribution conditions.

[0083] The focal length of the camera optical lens is f, and the focal length of the fifth lens L5 is f5, and the following relationship is satisfied: -5.46≤f5 / f≤-0.73, which effectively makes the camera optical lens light angle gentle and reduces the tolerance sensitivity by limiting the fifth lens L5. Preferably, -3.42≤f5 / f≤-0.91 is satisfied.

[0084] The central curvature radius of the object side of the fifth lens L5 at the near axis is R9, and the central curvature radius of the image side of the fifth lens L5 at the near axis is R10, and the following relationship is satisfied: -16.50≤(R9+R10) / (R9-R10)≤-2.05, which defines the shape of the fifth lens L5. When it is within the range, it is conducive to correcting the aberration of the off-axis angle and other problems with the development of ultra-thin wide-angle. Preferably, -10.31≤(R9+R10) / (R9-R10)≤-2.56 is satisfied.

[0085] The on-axis thickness of the fifth lens L5 is d9, and the total optical length of the camera optical lens is TTL, and the following relationship is satisfied: 0.03≤d9 / TTL≤0.20, which is within the conditional range, and is conducive to miniaturization. Preferably, 0.05≤d9 / TTL≤0.16 is satisfied.

[0086] The focal length of the camera optical lens is f, and the field of view of the camera optical lens at 1.0 field of view is FOV, and the following relationship is satisfied: f / FOV≥8.10, which is within the conditional range, and is conducive to wide-angle.

[0087] The aperture value FNO of the camera optical lens is less than or equal to 2.40, so as to realize a large aperture, and the camera optical lens has good imaging performance.

[0088] The camera optical lens of the present application will be described below with examples. The symbols recorded in each example are as follows. The units of focal length, on-axis distance, central curvature radius, and on-axis thickness are mm.

[0089] TTL: total optical length (on-axis distance from the object side of the first lens L1 to the image plane Si), unit: mm;

[0090] F-number FNO: refers to the ratio of the effective focal length of the imaging optical lens and the entrance pupil diameter.

[0091] Next, the technical solutions of the present application are specifically described in five embodiments.

[0092] (First embodiment)

[0093] Table 1 and Table 2 show the design data of the imaging optical lens 10 of the first embodiment of the present application.

[0094]

Table 1

[0095] Wherein, the meanings of each symbol are as follows.

[0096] S1: aperture;

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

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

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

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

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

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

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

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

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

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

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

[0108] R11: central radius of curvature of the object side surface of the optical filter GF at the paraxial region;

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

[0110] d: on-axis thickness of the lens, on-axis distance between lenses;

[0111] d0: axial distance from the stop S1 to the object side surface of the first lens L1;

[0112] d1: axial thickness of the first lens L1;

[0113] d2: axial distance from the image side surface of the first lens L1 to the object side surface of the second lens L2;

[0114] d3: axial thickness of the second lens L2;

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

[0116] d5: axial thickness of the third lens L3;

[0117] d6: axial distance from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;

[0118] d7: axial thickness of the fourth lens L4;

[0119] d8: axial distance from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L5;

[0120] d9: axial thickness of the fifth lens L5;

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

[0122] d11: axial thickness of the optical filter GF;

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

[0124] nd: refractive index of the d-line (the d-line is green light having a wavelength of 550 nm);

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

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

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

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

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

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

[0131] vd: Abbe number;

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

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

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

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

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

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

[0138] Table 2 shows aspherical surface data of each lens in the imaging optical lens 10 of the first embodiment of the present application.

[0139]

Table 2

[0140] For convenience, the aspherical surface of each lens surface uses the aspherical surface shown in the following formula (1). However, the present application is not limited to the aspherical polynomial form represented by the formula (1). 2 z = (cr 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 (1)

[0141] where k is a conic coefficient, A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24 are aspherical coefficients, c is a curvature at the center of the optical surface, r is a vertical distance of a point on the aspherical curve from the optical axis, and z is an aspherical depth (a vertical distance between a point on the aspherical surface at a distance r from the optical axis and a tangent plane tangent to the vertex of the aspherical surface on the optical axis).

[0142] Fig. 2 and Fig. 3 respectively show axial aberration and lateral chromatic aberration diagrams of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing through the camera optical lens 10 of the first embodiment. Fig. 4 shows field curvature and distortion diagrams of light with a wavelength of 555 nm after passing through the camera optical lens 10 of the first embodiment. The field curvature S of Fig. 4 is the sagittal field curvature, and the field curvature T is the tangential field curvature.

[0143] In the present embodiment, the entrance pupil diameter ENPD of the camera optical lens 10 is 3.290 mm, the full field (1.0 field) image height IH is 2.560 mm, and the full field (1.0 field) angle of view FOV in the diagonal direction is 35.06°. The camera optical lens 10 meets the design requirements of large aperture, long focal length, and ultra-thin, and the on-axis and off-axis chromatic aberrations are fully corrected, and has excellent optical characteristics.

[0144] It can be understood that the 1.0 field image height refers to half the diagonal length of the effective pixel region of the sensor, and the 1.0 field FOV in the diagonal direction refers to the field of view angle corresponding to the effective pixel region of the sensor.

[0145] (Second Embodiment)

[0146] The symbol meanings of the second embodiment are the same as those of the first embodiment.

[0147] Fig. 5 shows the camera optical lens 20 of the second embodiment of the present application.

[0148] Table 3 and Table 4 show the design data of the camera optical lens 20 of the second embodiment of the present application.

[0149]

Table 3

[0150] Table 4 shows the aspheric surface data of each lens in the camera optical lens 20 of the second embodiment of the present application.

[0151]

Table 4

[0152] Fig. 6 and Fig. 7 respectively show axial aberration and lateral chromatic aberration diagrams of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing through the camera optical lens 20 of the second embodiment. Fig. 8 shows field curvature and distortion diagrams of light with a wavelength of 555 nm after passing through the camera optical lens 20 of the second embodiment. The field curvature S of Fig. 8 is the sagittal field curvature, and the field curvature T is the tangential field curvature.

[0153] In the embodiment, the entrance pupil diameter ENPD of the photographing optical lens 20 is 3.290 mm, the full field (1.0 field) image height IH is 2.560 mm, the full field (1.0 field) diagonal direction field of view FOV is 35.11°, the photographing optical lens 20 meets the design requirements of large aperture, long focal length, and ultra-thin, the on-axis and off-axis chromatic aberrations are fully corrected, and the photographing optical lens 20 has excellent optical characteristics.

[0154] (third embodiment)

[0155] The symbol meanings of the third embodiment are the same as those of the first embodiment.

[0156] FIG. 9 shows a photographing optical lens 30 of the third embodiment of the present application.

[0157] Tables 5 and 6 show the design data of the photographing optical lens 30 of the third embodiment of the present application.

[0158] [Table 5]

[0159] Table 6 shows the aspheric surface data of each lens in the photographing optical lens 30 of the third embodiment of the present application.

[0160] [Table 6]

[0161] FIGS. 10 and 11 respectively show the axial aberration and the magnification chromatic aberration diagrams of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm after passing through the photographing optical lens 30 of the third embodiment. FIG. 12 shows the field curvature and distortion diagrams of light with a wavelength of 555 nm after passing through the photographing optical lens 30 of the third embodiment. The field curvature S of FIG. 12 is the sagittal direction field curvature, and T is the tangential direction field curvature.

[0162] In the embodiment, the entrance pupil diameter ENPD of the photographing optical lens 30 is 3.290 mm, the full field (1.0 field) image height IH is 2.560 mm, the full field (1.0 field) diagonal direction field of view FOV is 34.88°, the photographing optical lens 30 meets the design requirements of large aperture, long focal length, and ultra-thin, the on-axis and off-axis chromatic aberrations are fully corrected, and the photographing optical lens 30 has excellent optical characteristics.

[0163] (fourth embodiment)

[0164] The symbol meanings of the fourth embodiment are the same as those of the first embodiment.

[0165] FIG. 13 shows a photographing optical lens 40 of the fourth embodiment of the present application.

[0166] Table 7, Table 8 show the design data of the imaging optical lens 40 of the fourth embodiment of the present application.

[0167] [Table 7]

[0168] Table 8 shows the aspherical surface data of each lens in the imaging optical lens 40 of the fourth embodiment of the present application.

[0169] [Table 8]

[0170] Fig. 14, Fig. 15 respectively show the axial aberration and the lateral chromatic aberration of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing through the imaging optical lens 40 of the fourth embodiment. Fig. 16 shows the field curvature and distortion of light with a wavelength of 555 nm after passing through the imaging optical lens 40 of the fourth embodiment. The field curvature S of Fig. 16 is the sagittal direction field curvature, and T is the tangential direction field curvature.

[0171] In the present embodiment, the entrance pupil diameter ENPD of the imaging optical lens 40 is 3.306 mm, the full field (1.0 field) image height IH is 2.560 mm, and the full field (1.0 field) angle of view FOV in the diagonal direction is 34.92°. The imaging optical lens 40 meets the design requirements of large aperture, long focal length, and ultra-thin, and the on-axis and off-axis chromatic aberrations are fully corrected, and has excellent optical characteristics.

[0172] (Fifth Embodiment)

[0173] The symbol meanings of the fifth embodiment are the same as those of the first embodiment.

[0174] Fig. 17 shows the imaging optical lens 50 of the fifth embodiment of the present application.

[0175] Table 9, Table 10 show the design data of the imaging optical lens 50 of the fifth embodiment of the present application.

[0176] [Table 9]

[0177] Table 10 shows the aspherical surface data of each lens in the imaging optical lens 50 of the fifth embodiment of the present application.

[0178] [Table 10]

[0179] FIG. 18 and FIG. 19 respectively show the axial aberration and the lateral chromatic aberration of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing through the photographing optical lens 50 of the fifth embodiment. FIG. 20 shows the field curvature and distortion of light with a wavelength of 555 nm after passing through the photographing optical lens 50 of the fifth embodiment. The field curvature S of FIG. 20 is the sagittal direction field curvature, and T is the tangential direction field curvature.

[0180] In the embodiment, the entrance pupil diameter ENPD of the photographing optical lens 50 is 3.290 mm, the full field of view (1.0 field of view) image height IH is 2.559 mm, and the full field of view (1.0 field of view) angle of view FOV in the diagonal direction is 35.01°. The photographing optical lens 50 meets the design requirements of large aperture, long focal length, and ultra-thin, and the on-axis and off-axis chromatic aberrations are fully corrected, and has excellent optical characteristics.

[0181]

Table 11

[0182] It is understood by those skilled in the art that the above embodiments are specific embodiments for implementing the present application, and in actual applications, various changes can be made in form and details without departing from the spirit and scope of the present application.

Claims

1. A camera optical lens characterized in that, The camera optical lens comprises five lenses in sequence from the object side to the image side: a first lens with positive refractive power, a second lens with negative refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, and a fifth lens with negative refractive power. Wherein, the on-axis distance from the image side surface of the third lens to the object side surface of the fourth lens is d6, the total optical length of the camera optical lens is TTL, the focal length of the first lens is f1, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the central curvature radius of the object side surface of the third lens at the near axis is R5, the central curvature radius of the image side surface of the third lens at the near axis is R6, the central curvature radius of the object side surface of the fifth lens at the near axis is R9, the central curvature radius of the image side surface of the fifth lens at the near axis is R10, the focal length of the camera optical lens is f, and the following relationships are satisfied: 0.20≤d6 / TTL≤0.36; 6.00≤(f4-f5) / f1≤10.10; -1.00≤(R5+R6) / (R5-R6)≤-0.70; -0.80≤(R9+R10) / f≤-0.

39.

2. The camera optical lens according to claim 1, wherein, The on-axis thickness of the first lens is d1, the on-axis thickness of the second lens is d3, and the on-axis thickness of the third lens is d5, and the following relationship is satisfied:

3. The camera optical lens according to claim 1, wherein, 1.50≤d1 / (d3+d5)≤3.

50.

4. The camera optical lens according to claim 1, characterized in that, The effective radius of the object side surface of the first lens is SD11, the on-axis distance between the intersection of the object side surface of the first lens and the optical axis and the effective radius vertex of the object side surface of the first lens is SAG11, the image height of the camera optical lens at 1.0 field of view is IH, and the following relationship is satisfied: 0.39≤SD11*SAG11 / IH≤0.

65. The object side surface of the first lens is convex at the near axis, and the image side surface of the first lens is convex at the near axis. The central curvature radius of the object side surface of the first lens at the near axis is R1, the central curvature radius of the image side surface of the first lens at the near axis is R2, the on-axis thickness of the first lens is d1, and the following relationships are satisfied: 0.18≤f1 / f≤0.65; 5. The camera optical lens according to claim 1, wherein, -1.44≤(R1+R2) / (R1-R2)≤-0.42; 0.08≤d1 / TTL≤0.

32. The object side surface of the second lens is convex at the near axis, and the image side surface of the second lens is concave at the near axis. The focal length of the second lens is f2, the central curvature radius of the object side surface of the second lens at the near axis is R3, the central curvature radius of the image side surface of the second lens at the near axis is R4, the on-axis thickness of the second lens is d3, and the following relationships are satisfied: -1.89≤f2 / f≤-0.49; 6. The camera optical lens according to claim 1, characterized in that, 0.75≤(R3+R4) / (R3-R4)≤5.28; 0.02≤d3 / TTL≤0.

10. The object side surface of the third lens is concave at the near axis, and the image side surface of the third lens is concave at the near axis. A focal length of the third lens is f3, an on-axis thickness of the third lens is d5, and the following relations are satisfied: -2.84≤f3 / f≤-0.35; 0.01≤d5 / TTL≤0.

06.

7. The camera optical lens according to claim 1, wherein, An object-side surface of the fourth lens is concave at a near-axial portion, and an image-side surface of the fourth lens is convex at a near-axial portion; A central curvature radius of the object-side surface of the fourth lens at a near-axial portion is R7, a central curvature radius of the image-side surface of the fourth lens at a near-axial portion is R8, an on-axis thickness of the fourth lens is d7, and the following relations are satisfied: 0.53≤f4 / f≤2.26; 1.30≤(R7+R8) / (R7-R8)≤10.54; 0.04≤d7 / TTL≤0.

14.

8. The camera optical lens according to claim 1, characterized in that, An object-side surface of the fifth lens is concave at a near-axial portion, and an image-side surface of the fifth lens is convex at a near-axial portion; An on-axis thickness of the fifth lens is d9, and the following relations are satisfied: -5.46≤f5 / f≤-0.73; -16.50≤(R9+R10) / (R9-R10)≤-2.05; 0.03≤d9 / TTL≤0.

20.

9. The camera optical lens according to claim 1, characterized in that, A field of view of the camera optical lens at 1.0 field of view is FOV, and the following relation is satisfied: f / FOV≥8.

10.

10. The camera optical lens according to claim 1, characterized in that, An aperture value of the camera optical lens is FNO, and the following relation is satisfied: FNO≤2.40.

Images