Camera optical lens

Abstract

A camera optical lens (10) comprising a total of five lenses. The five lenses are arranged in sequence from an object side to an image side as follows: a first lens (L1) having a positive refractive power, a second lens (L2) having a positive refractive power, a third lens (L3) having a negative refractive power, a fourth lens (L4) having a positive refractive power, and a fifth lens (L5) having a negative refractive power; and the following relational expressions are satisfied: 0.12≤d1 / TTL≤0.20; 5.00≤R3 / R4≤15.00; and -1.30≤(R5+R6) / (R5-R6)≤-1.00. The camera optical lens (10) can meet the design requirements of large aperture, ultra-thinness and wide angle.

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 monitors, PC lenses and other camera devices. BACKGROUND

[0002] In recent years, with the rise of various intelligent devices, the demand for small camera optical lenses is increasing, and due to the reduction of the pixel size of the photosensitive device, in addition to the current trend of electronic products being light and thin, the small 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 the photosensitive device and the increasing requirement of the system on imaging quality, five-piece lens structure gradually appears in the lens design. There is an urgent need for wide-angle imaging lens with excellent optical characteristics, small volume and fully corrected aberration.

[0003] SUMMARY

[0004] In view of the above problems, the main purpose of the present application is to provide a camera optical lens which has good optical performance and meets the design requirements of large aperture, ultra-thin and wide-angle.

[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 in order from the object side to the image side: a first lens with positive refractive power, a second lens with positive refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, and a fifth lens with negative refractive power.

[0006] Wherein, the on-axis thickness of the first lens is d1, the total optical length of the camera optical lens is TTL, the central curvature radius of the object side surface of the second lens is R3, the central curvature radius of the image side surface of the second lens is R4, the central curvature radius of the object side surface of the third lens is R5, the central curvature radius of the image side surface of the third lens is R6, and the following relationships are satisfied:

[0007] 0.12≤d1 / TTL≤0.20;

[0008] 5.00≤R3 / R4≤15.00;

[0009] -1.30≤(R5+R6) / (R5-R6)≤-1.00.

[0010] Preferably, the focal length of the first lens is f1, the focal length of the photographing optical lens is f, and the following relationship is satisfied:

[0011] 1.00≤f1 / f≤1.35.

[0012] Preferably, the on-axis thickness of the fourth lens is d7, the on-axis thickness of the fifth lens is d9, and the following relationship is satisfied:

[0013] 0.70≤d7 / d9≤2.00.

[0014] Preferably, the full field of view image height of the photographing optical lens is IH, the field of view angle in diagonal direction of the photographing optical lens is FOV, the object side surface diameter of the first lens is D, and the following relationship is satisfied:

[0015] (H*FOV) / D≤166.66°.

[0016] Preferably, the on-axis thickness of the second lens is d3, the on-axis distance from the image side surface of the second lens to the object side surface of the third lens is d4, and the following relationship is satisfied:

[0017] 3.00≤d3 / d4≤20.00.

[0018] 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;

[0019] the central curvature radius of the object side surface of the first lens is R1, the central curvature radius of the image side surface of the first lens is R2, and the following relationship is satisfied:

[0020] -1.70≤(R1+R2) / (R1-R2)≤-0.51.

[0021] Preferably, the object side surface of the second lens is concave at the paraxial region, and the image side surface of the second lens is convex at the paraxial region;

[0022] the focal length of the second lens is f2, the focal length of the photographing optical lens is f, the on-axis thickness of the second lens is d3, and the following relationship is satisfied:

[0023] 0.51≤f2 / f≤1.73;

[0024] 0.57≤(R3+R4) / (R3-R4)≤2.10;

[0025] 0.04≤d3 / TTL≤0.21.

[0026] Preferably, the object side surface of the third lens is concave at the paraxial region, and the image side surface of the third lens is convex at the paraxial region;

[0027] The focal length of the third lens is f3, the focal length of the photographing optical lens is f, the on-axis thickness of the third lens is d5, and the following relationship is satisfied:

[0028] -1.46≤f3 / f≤-0.42;

[0029] 0.02≤d5 / TTL≤0.08.

[0030] Preferably, the image side surface of the fourth lens is convex at the paraxial region;

[0031] The focal length of the fourth lens is f4, the focal length of the photographing optical lens is f, the central radius of curvature of the object side surface of the fourth lens is R7, the central radius of curvature of the image side surface of the fourth lens is R8, the on-axis thickness of the fourth lens is d7, and the following relationship is satisfied:

[0032] 0.26≤f4 / f≤0.84;

[0033] 0.47≤(R7+R8) / (R7-R8)≤1.74;

[0034] 0.07≤d7 / TTL≤0.28.

[0035] Preferably, the object side surface of the fifth lens is convex at the paraxial region, and the image side surface of the fifth lens is concave at the paraxial region;

[0036] The focal length of the fifth lens is f5, the focal length of the photographing optical lens is f, the central radius of curvature of the object side surface of the fifth lens is R9, the central radius of curvature of the image side surface of the fifth lens is R10, the on-axis thickness of the fifth lens is d9, and the following relationship is satisfied:

[0037] -1.12≤f5 / f≤-0.35;

[0038] 0.52≤(R9+R10) / (R9-R10)≤2.07;

[0039] 0.05≤d9 / TTL≤0.29.

[0040] 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 a mobile phone photographing lens assembly and a WEB photographing lens composed of a high-pixel CCD, CMOS, or the like. BRIEF DESCRIPTION OF DRAWINGS

[0041] 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 only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative work based on these drawings.

[0042] Fig. 1 is a structural schematic diagram of a camera optical lens according to a first embodiment of the present application;

[0043] Fig. 2 is an axial aberration schematic diagram of the camera optical lens shown in Fig. 1;

[0044] Fig. 3 is a relative color aberration schematic diagram of the camera optical lens shown in Fig. 1;

[0045] Fig. 4 is a field curvature and distortion schematic diagram of the camera optical lens shown in Fig. 1;

[0046] Fig. 5 is a structural schematic diagram of a camera optical lens according to a second embodiment of the present application;

[0047] Fig. 6 is an axial aberration schematic diagram of the camera optical lens shown in Fig. 5;

[0048] Fig. 7 is a relative color aberration schematic diagram of the camera optical lens shown in Fig. 5;

[0049] Fig. 8 is a field curvature and distortion schematic diagram of the camera optical lens shown in Fig. 5;

[0050] Fig. 9 is a structural schematic diagram of a camera optical lens according to a third embodiment of the present application;

[0051] Fig. 10 is an axial aberration schematic diagram of the camera optical lens shown in Fig. 9;

[0052] Fig. 11 is a relative color aberration schematic diagram of the camera optical lens shown in Fig. 9;

[0053] Fig. 12 is a field curvature and distortion schematic diagram of the camera optical lens shown in Fig. 9;

[0054] Fig. 13 is a structural schematic diagram of a camera optical lens according to a fourth embodiment of the present application;

[0055] Fig. 14 is an axial aberration schematic diagram of the camera optical lens shown in Fig. 13;

[0056] Fig. 15 is a relative color aberration schematic diagram of the camera optical lens shown in Fig. 13;

[0057] Fig. 16 is a field curvature and distortion schematic diagram of the camera optical lens shown in Fig. 13;

[0058] Fig. 17 is a structural schematic diagram of a camera optical lens according to a comparative embodiment;

[0059] Fig. 18 is an axial aberration diagram of the photographing optical lens shown in Fig. 17;

[0060] Fig. 19 is a lateral chromatic aberration diagram of the photographing optical lens shown in Fig. 17;

[0061] Fig. 20 is a field curvature and distortion diagram of the photographing optical lens shown in Fig. 17. DETAILED DESCRIPTION

[0062] For the purpose, technical solutions and advantages of the present application to be more clear, 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 based on various changes and modifications of the following embodiments, the technical solutions claimed by the present application can be implemented.

[0063] With reference to the drawings, the technical solutions of the present application provide a photographing optical lens 10, 20, 30, 40. Figs. 1, 5, 9, 13 respectively show the photographing optical lens 10, 20, 30, 40 of the present application, which comprises five lenses. Specifically, the photographing optical lens, from the object side to the image side, comprises 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 a filter GF can be arranged between the fifth lens L5 and the image plane Si.

[0064] The first lens L1 has positive refractive power, the second lens L2 has positive refractive power, the third lens L3 has negative refractive power, the fourth lens L4 has positive refractive power, and the fifth lens L5 has negative refractive power. In other embodiments, each lens can also have other refractive power.

[0065] The first lens L1 is made of plastic material, the second lens L2 is made of plastic material, the third lens L3 is made of plastic material, the fourth lens L4 is made of plastic material, and the fifth lens L5 is made of plastic material. Each lens can also be made of other materials.

[0066] The on-axis thickness of the first lens L1 is defined as d1, and the total optical length of the photographing optical lens is TTL, satisfying the following relationship: 0.12≤d1 / TTL≤0.20. This relationship specifies the ratio of the on-axis thickness of the first lens L1 to the total optical length, which helps to control the thickness of the first lens L1, facilitates injection molding, and helps to collect light, thereby ensuring wide-angle design.

[0067] The central curvature radius of the object side surface of the second lens L2 is R3, and the central curvature radius of the image side surface is R4, satisfying the following relationship: 5.00≤R3 / R4≤15.00. The relationship defines the shape of the second lens L2, and within the range of the relationship, the degree of light deviation through the lens can be mitigated, chromatic aberration is effectively corrected, and the chromatic aberration |LC|≤2.0μm.

[0068] The central curvature radius of the object side surface of the third lens L3 is R5, and the central curvature radius of the image side surface is R6, satisfying the following relationship: -1.30≤(R5+R6) / (R5-R6)≤-1.00. The relationship defines the shape of the third lens L3, which is conducive to correcting the astigmatism and distortion of the imaging optical lens, making the distortion |Distortion|≤2.5%, and reducing the possibility of dark corner generation.

[0069] Under the condition of satisfying the above several conditional expressions, the imaging optical lens 10, 20, 30, 40 has good optical performance while meeting the design requirements of large aperture, wide angle, and ultra-thin; according to the characteristics of the imaging optical lens 10, 20, 30, 40, the imaging optical lens 10, 20, 30, 40 is especially suitable for mobile phone camera lens assemblies and WEB cameras composed of high-pixel CCD, CMOS and other imaging elements.

[0070] Based on the above conditional expressions and the functions that can be achieved, the characteristics of each lens are further refined as follows.

[0071] The focal length of the first lens L1 is f1, and the focal length of the imaging optical lens is f, satisfying the following relationship: 1.00≤f1 / f≤1.35. The relationship defines the ratio of the focal length of the first lens L1 and the imaging optical lens, and within the range of the relationship, the focal length of the imaging optical lens is reasonably distributed, so that the imaging optical lens has better imaging quality and lower sensitivity.

[0072] The on-axis thickness of the fourth lens L4 is d7, and the on-axis thickness of the fifth lens L5 is d9, satisfying the following relationship: 0.70≤d7 / d9≤2.00. The relationship defines the ratio of the on-axis thickness of the fourth lens L4 and the on-axis thickness of the fifth lens L5, and within the range of the relationship, it is helpful to compress the total length of the imaging optical lens, and also helpful to control the thickness of the first lens L1, facilitating injection molding.

[0073] The full field of view image height of the imaging optical lens is IH, the field of view angle in the diagonal direction is FOV, the diameter of the object side surface of the first lens is D, and the following relationship is satisfied: (H*FOV) / D≤166.66°. By controlling the full field of view image height and the field of view angle, the front aperture can be effectively controlled.

[0074] The on-axis thickness of the second lens L2 is d3, the on-axis distance from the image side surface of the second lens L2 to the object side surface of the third lens L3 is d4, and the following relationship is satisfied: 3.00≤d3 / d4≤20.00. This relationship defines the ratio of the on-axis thickness of the second lens L2 to the air gap between the second lens L2 and the third lens L3, and within the range of the relationship, the processing of the lens and the assembly of the lens are facilitated.

[0075] 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. The object side surface and the image side surface of the first lens L1 can also be provided in other concave-convex distribution conditions.

[0076] The central curvature radius of the object side surface of the first lens L1 is R1, and the central curvature radius of the image side surface of the first lens L1 is R2, and the following relationship is satisfied: -1.70≤(R1+R2) / (R1-R2)≤-0.51. By reasonably controlling the shape of the first lens L1, the first lens L1 can effectively correct the system spherical aberration. Preferably, -1.06≤(R1+R2) / (R1-R2)≤-0.64 is satisfied.

[0077] The object side surface of the second lens L2 is concave at the paraxial region, and the image side surface is convex at the paraxial region. The object side surface of the second lens L2 can also be provided in other concave-convex distribution conditions.

[0078] The focal length of the second lens L2 is f2, and the following relationship is satisfied: 0.51≤f2 / f≤1.73. This relationship defines the ratio of the focal length f2 of the second lens L2 to the focal length f of the image optical lens 10, and within this range, by controlling the positive focal power of the second lens L2 within a reasonable range, it is beneficial to correct the aberration of the imaging optical lens. Preferably, 0.82≤f2 / f≤1.38 is satisfied.

[0079] The imaging optical lens also satisfies the following relationship: 0.57≤(R3+R4) / (R3-R4)≤2.10. This relationship defines the shape of the second lens L2, and when within the range, it is beneficial to correct the on-axis chromatic aberration problem as the lens develops towards ultra-thin wide-angle. Preferably, 0.91≤(R3+R4) / (R3-R4)≤1.68 is satisfied.

[0080] The on-axis thickness of the second lens L2 is d3, and the following relationship is satisfied: 0.04≤d3 / TTL≤0.21. Within the range of the relationship, it is beneficial to achieve ultra-thin. Preferably, 0.06≤d3 / TTL≤0.17 is satisfied.

[0081] The object side surface of the third lens L3 is concave at the paraxial region, and the image side surface is convex at the paraxial region. The object side surface and the image side surface of the third lens L3 can also be provided in other concave-convex distribution conditions.

[0082] The focal length of the third lens L3 is defined as f3, and the following relationship is satisfied: -1.46≤f3 / f≤-0.42, which defines the ratio of the focal length of the third lens L3 to the focal length f of the photographing optical lens. Within the range of the relationship, the focal length of the photographing optical lens is reasonably distributed, so that the photographing optical lens has better imaging quality and lower sensitivity. Preferably, -0.91≤f3 / f≤-0.53 is satisfied.

[0083] The on-axis thickness of the third lens L3 is d5, and the following relationship is satisfied: 0.02≤d5 / TTL≤0.08, which is beneficial to the realization of ultra-thinning within the range of the relationship. Preferably, 0.04≤d5 / TTL≤0.07 is satisfied.

[0084] The object side of the fourth lens L4 is concave or convex at the paraxial region, and the image side is convex at the paraxial region. The image side of the fourth lens L4 can also be provided with other concave and convex distribution conditions.

[0085] The focal length of the fourth lens L4 is f4, and the following relationship is satisfied: 0.26≤f4 / f≤0.84, which reasonably distributes the optical power, so that the system has better imaging quality and lower sensitivity. Preferably, 0.41≤f4 / f≤0.67 is satisfied.

[0086] The central curvature radius of the object side of the fourth lens L4 is R7, and the central curvature radius of the image side of the fourth lens L4 is R8, and the following relationship is satisfied: 0.47≤(R7+R8) / (R7-R8)≤1.74, which defines the shape of the fourth lens L4. When within the range, it is beneficial to correct the aberration of the off-axis angle and other problems with the development of ultra-thin wide-angle. Preferably, 0.76≤(R7+R8) / (R7-R8)≤1.39 is satisfied.

[0087] The on-axis thickness of the fourth lens L4 is d7, and the following relationship is satisfied: 0.07≤d7 / TTL≤0.28, which is beneficial to the realization of ultra-thinning within the range of the relationship. Preferably, 0.11≤d7 / TTL≤0.23 is satisfied.

[0088] The object side of the fifth lens L5 is convex at the paraxial region, and the image side is concave at the paraxial region. The object side and the image side of the fifth lens L5 can also be provided with other concave and convex distribution conditions.

[0089] The focal length of the fifth lens L5 is f5, and the following relationship is satisfied: -1.12≤f5 / f≤-0.35, which effectively makes the ray angle of the photographing optical lens gentle and reduces the tolerance sensitivity. Preferably, -0.70≤f5 / f≤-0.43 is satisfied.

[0090] The central curvature radius of the object side surface of the fifth lens L5 is R9, the central curvature radius of the image side surface of the fifth lens L5 is R10, and the following relationship is satisfied: 0.52≤(R9+R10) / (R9-R10)≤2.07, which defines the shape of the fifth lens L5. When the range is satisfied, with the development of ultra-thin wide-angle, it is beneficial to correct the aberration of the off-axis angle and the like. Preferably, 0.83≤(R9+R10) / (R9-R10)≤1.66 is satisfied.

[0091] The on-axis thickness of the fifth lens L5 is d9, and the following relationship is satisfied: 0.05≤d9 / TTL≤0.29. When the range of the relationship is satisfied, it is beneficial to realize ultra-thin. Preferably, 0.08≤d9 / TTL≤0.23 is satisfied.

[0092] The maximum image height of the camera optical lens is IH, and the following relationship is satisfied: TTL / IH≤1.554. When the range of the relationship is satisfied, it is beneficial to realize ultra-thin.

[0093] The field of view angle FOV of the camera optical lens is greater than or equal to 89.00°, so as to realize wide-angle.

[0094] The aperture value FNO of the camera optical lens is less than or equal to 2.3, so as to realize large aperture, and the imaging performance of the camera optical lens is good.

[0095] The camera optical lens of the present application will be described below by 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.

[0096] TTL: total optical length (on-axis distance from the object side surface of the first lens L1 to the image surface Si), unit: mm;

[0097] Aperture value FNO: refers to the ratio of the effective focal length of the camera optical lens to the entrance pupil diameter.

[0098] Next, the technical solutions of the present application will be specifically described in four embodiments, and a comparative embodiment is provided as a reference description. When the range of the above condition formula is exceeded, the technical effects of the present application cannot be realized.

[0099] (First embodiment)

[0100] Table 1 and Table 2 show the design data of the camera optical lens 10 of the first embodiment of the present application. The object side surface of the fourth lens L4 is concave at the near axis.

[0101]

Table 1

[0102] Wherein, the meanings of the symbols are as follows.

[0103] S1: stop;

[0104] R: radius of curvature at the center of the optical surface;

[0105] R1: radius of curvature at the center of the object side surface of the first lens L1;

[0106] R2: radius of curvature at the center of the image side surface of the first lens L1;

[0107] R3: radius of curvature at the center of the object side surface of the second lens L2;

[0108] R4: radius of curvature at the center of the image side surface of the second lens L2;

[0109] R5: radius of curvature at the center of the object side surface of the third lens L3;

[0110] R6: radius of curvature at the center of the image side surface of the third lens L3;

[0111] R7: radius of curvature at the center of the object side surface of the fourth lens L4;

[0112] R8: radius of curvature at the center of the image side surface of the fourth lens L4;

[0113] R9: radius of curvature at the center of the object side surface of the fifth lens L5;

[0114] R10: radius of curvature at the center of the image side surface of the fifth lens L5;

[0115] R11: radius of curvature at the center of the object side surface of the optical filter GF;

[0116] R12: radius of curvature at the center of the image side surface of the optical filter GF;

[0117] d: on-axis thickness of a lens, on-axis distance between lenses;

[0118] d0: on-axis distance from the stop S1 to the object side surface of the first lens L1;

[0119] d1: on-axis thickness of the first lens L1;

[0120] d2: on-axis distance from the image side surface of the first lens L1 to the object side surface of the second lens L2;

[0121] d3: on-axis thickness of the second lens L2;

[0122] d4: on-axis distance from the image side surface of the second lens L2 to the object side surface of the third lens L3;

[0123] d5: on-axis thickness of the third lens L3;

[0124] d6: an on-axis distance from an image-side surface of the third lens L3 to an object-side surface of the fourth lens L4;

[0125] d7: an on-axis thickness of the fourth lens L4;

[0126] d8: an on-axis distance from an image-side surface of the fourth lens L4 to an object-side surface of the fifth lens L5;

[0127] d9: an on-axis thickness of the fifth lens L5;

[0128] d10: an on-axis distance from an image-side surface of the fifth lens L5 to an object-side surface of the optical filter GF;

[0129] d11: an on-axis thickness of the optical filter GF;

[0130] d12: an on-axis distance from an image-side surface of the optical filter GF to the image plane Si;

[0131] nd: a refractive index for a d-line (the d-line is green light having a wavelength of 555 nm);

[0132] nd1: a refractive index for a d-line of the first lens L1;

[0133] nd2: a refractive index for a d-line of the second lens L2;

[0134] nd3: a refractive index for a d-line of the third lens L3;

[0135] nd4: a refractive index for a d-line of the fourth lens L4;

[0136] nd5: a refractive index for a d-line of the fifth lens L5;

[0137] ndg: a refractive index for a d-line of the optical filter GF;

[0138] vd: an Abbe number;

[0139] v1: an Abbe number of the first lens L1;

[0140] v2: an Abbe number of the second lens L2;

[0141] v3: an Abbe number of the third lens L3;

[0142] v4: an Abbe number of the fourth lens L4;

[0143] v5: an Abbe number of the fifth lens L5;

[0144] vg: an Abbe number of the optical filter GF.

[0145] Table 2 shows aspherical surface data of each lens in the imaging optical lens 10 of the first embodiment of the present application.

[0146]

Table 2

[0147] For convenience, the aspherical surface of each lens surface uses an 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). 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)

[0148] where k is a conic coefficient, A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, A30 are aspherical coefficients, c is a curvature at the center of the optical surface, r is a perpendicular distance of a point on the aspherical curve from the optical axis, and z is an aspherical depth (a perpendicular distance between a point on the aspherical surface at a distance r from the optical axis and a tangent plane at the vertex of the aspherical surface).

[0149] FIGS. 2, 3 respectively show axial aberration and magnification chromatic aberration diagrams of light having 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 having a wavelength of 555 nm after passing through the camera optical lens 10 of the first embodiment, where the field curvature S of FIG. 4 is the sagittal field curvature, and T is the tangential field curvature.

[0150] In the present embodiment, the entrance pupil diameter ENPD of the camera optical lens 10 is 1.213 mm, the full field image height IH is 2.626 mm, and the field of view FOV in the diagonal direction is 89.00°. The camera optical lens 10 satisfies the design requirements of large aperture, wide angle, and ultra-thin, and the on-axis and off-axis chromatic aberrations are sufficiently corrected, and has excellent optical characteristics.

[0151] (SECOND EMBODIMENT)

[0152] The symbols of the second embodiment have the same meanings as those of the first embodiment.

[0153] Fig. 5 shows a photographing optical lens 20 according to the second embodiment of the present application. The object side surface of the fourth lens L4 is concave at the paraxial region.

[0154] Tables 3 and 4 show the design data of the photographing optical lens 20 according to the second embodiment of the present application.

[0155] [Table 3]

[0156] Table 4 shows the aspheric data of each lens in the photographing optical lens 20 according to the second embodiment of the present application.

[0157] [Table 4]

[0158] Figs. 6 and 7 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 passing through the photographing optical lens 20 according to the second embodiment of the present application. Fig. 8 shows the field curvature and the distortion of light with a wavelength of 555 nm passing through the photographing optical lens 20 according to the second embodiment of the present application. The field curvature S of Fig. 8 is the sagittal field curvature, and the field curvature T is the tangential field curvature.

[0159] In the present embodiment, the entrance pupil diameter ENPD of the photographing optical lens 20 is 1.107 mm, the full field image height IH is 2.626 mm, and the field of view FOV in the diagonal direction is 91.81°. The photographing optical lens 20 satisfies the design requirements of large aperture, wide angle and ultra-thin, and the on-axis and off-axis chromatic aberrations are fully corrected, and the photographing optical lens 20 has excellent optical characteristics.

[0160] (Third Embodiment)

[0161] The symbols of the third embodiment have the same meanings as those of the first embodiment.

[0162] Fig. 9 shows a photographing optical lens 30 according to the third embodiment of the present application. The object side surface of the fourth lens L4 is convex at the paraxial region.

[0163] Tables 5 and 6 show the design data of the photographing optical lens 30 according to the third embodiment of the present application.

[0164] [Table 5]

[0165] Table 6 shows the aspheric data of each lens in the photographing optical lens 30 according to the third embodiment of the present application.

[0166] [Table 6]

[0167] Fig. 10, Fig. 11 respectively show the axial aberration and the lateral chromatic aberration of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, 470 nm after passing through the camera optical lens 30 of the third embodiment. Fig. 12 shows the field curvature and distortion of light with a wavelength of 555 nm after passing through the camera optical lens 30 of the third embodiment. The field curvature S of Fig. 12 is the sagittal field curvature, and T is the tangential field curvature.

[0168] In the present embodiment, the entrance pupil diameter ENPD of the camera optical lens 30 is 1.124 mm, the full field image height IH is 2.626 mm, and the diagonal direction field of view FOV is 91.47°. The camera optical lens 30 meets the design requirements of large aperture, wide angle, and ultra-thin, and the on-axis and off-axis chromatic aberrations are fully corrected, and has excellent optical characteristics.

[0169] (Fourth Embodiment)

[0170] The symbol meanings of the fourth embodiment are the same as those of the first embodiment.

[0171] Fig. 13 shows the camera optical lens 40 of the fourth embodiment of the present application. The object side surface of the fourth lens L4 is concave at the near axis.

[0172] Table 7, Table 8 show the design data of the camera optical lens 40 of the fourth embodiment of the present application.

[0173] [Table 7]

[0174] Table 8 shows the aspheric surface data of each lens in the camera optical lens 40 of the fourth embodiment of the present application.

[0175] [Table 8]

[0176] 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, 470 nm after passing through the camera 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 camera optical lens 40 of the third embodiment. The field curvature S of Fig. 16 is the sagittal field curvature, and T is the tangential field curvature.

[0177] In the embodiment, the entrance pupil diameter ENPD of the photographing optical lens 40 is 1.144 mm, the full field of view image height IH is 2.626 mm, the field of view angle FOV in the diagonal direction is 90.34°, the photographing optical lens 40 meets the design requirements of large aperture, wide angle, and ultra-thin, the on-axis and off-axis chromatic aberrations are fully corrected, and the photographing optical lens 40 has excellent optical characteristics.

[0178] The later appearing Table 11 shows the values corresponding to the parameters specified in the conditions for the various numerical values in the first, second, third, and fourth embodiments.

[0179] (Comparative Embodiment)

[0180] The symbols in the comparative embodiment have the same meanings as in the first embodiment.

[0181] FIG. 17 shows a photographing optical lens 50 according to the comparative embodiment of the present application. The object side surface of the fourth lens L4 is concave at the near axis.

[0182] Tables 9 and 10 show the design data of the photographing optical lens 50 according to the comparative embodiment of the present application.

[0183] [Table 9]

[0184] Table 10 shows the aspheric data of the lenses in the photographing optical lens 50 according to the comparative embodiment of the present application.

[0185] [Table 10]

[0186] FIGS. 18 and 19 show the axial aberrations and the lateral chromatic aberrations of light having wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, and 470 nm, respectively, after passing through the photographing optical lens 50 according to the comparative embodiment. FIG. 20 shows the field curvature and the distortion of light having a wavelength of 555 nm after passing through the photographing optical lens 50 according to the comparative embodiment. The field curvature S in FIG. 20 is the sagittal field curvature, and T is the tangential field curvature.

[0187] Table 11 below lists the numerical values corresponding to the conditions in the comparative embodiment according to the above conditions. Obviously, the photographing optical lens 50 according to the comparative embodiment does not meet the condition 0.12≤d1 / TTL≤0.20 described above, and the imaging effect is poor.

[0188] In the comparative embodiment, the entrance pupil diameter ENPD of the photographing optical lens 50 is 1.140 mm, the full field of view image height IH is 2.626 mm, and the field of view angle FOV in the diagonal direction is 91.21°. The photographing optical lens 50 does not meet the design requirements of large aperture, wide angle, and ultra-thin.

[0189] [Table 11]

[0190] It will be appreciated by those skilled in the art that the above embodiments are merely illustrative of the principles of the application and that numerous modifications and changes can be made in form and detail without departing from the spirit and scope of the 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 positive 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 thickness of the first lens is d1, the total optical length of the camera optical lens is TTL, the central curvature radius of the object side surface of the second lens is R3, the central curvature radius of the image side surface of the second lens is R4, the central curvature radius of the object side surface of the third lens is R5, the central curvature radius of the image side surface of the third lens is R6, and the following relationships are satisfied: 0.12≤d1 / TTL≤0.20; 5.00≤R3 / R4≤15.00; -1.30≤(R5+R6) / (R5-R6)≤-1.

00.

2. The camera optical lens according to claim 1, characterized in that, The focal length of the first lens is f1, the focal length of the camera optical lens is f, and the following relationship is satisfied: 1.00≤f1 / f≤1.

35.

3. The camera optical lens according to claim 1, wherein, The on-axis thickness of the fourth lens is d7, the on-axis thickness of the fifth lens is d9, and the following relationship is satisfied: 0.70≤d7 / d9≤2.

00.

4. The camera optical lens according to claim 1, characterized in that, The full field of view image height of the camera optical lens is IH, the field of view angle in the diagonal direction of the camera optical lens is FOV, the object side surface diameter of the first lens is D, and the following relationship is satisfied: (H*FOV) / D≤166.66°.

5. The camera optical lens according to claim 1, wherein, The on-axis thickness of the second lens is d3, the on-axis distance from the image side surface of the second lens to the object side surface of the third lens is d4, and the following relationship is satisfied: 3.00≤d3 / d4≤20.

00.

6. The camera optical lens according to claim 1, characterized in that, 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 is R1, the central curvature radius of the image side surface of the first lens is R2, and the following relationship is satisfied: -1.70≤(R1+R2) / (R1-R2)≤-0.

51.

7. The camera optical lens according to claim 1, wherein, The object side surface of the second lens is concave at the near axis, and the image side surface of the second lens is convex at the near axis; The focal length of the second lens is f2, the focal length of the camera optical lens is f, the on-axis thickness of the second lens is d3, and the following relationships are satisfied: 0.51≤f2 / f≤1.73; 0.57≤(R3+R4) / (R3-R4)≤2.10; 0.04≤d3 / TTL≤0.

21.

8. The camera optical lens according to claim 1, characterized in that, The object side surface of the third lens is concave at the near axis, and the image side surface of the third lens is convex at the near axis; The focal length of the third lens is f3, the focal length of the camera optical lens is f, the on-axis thickness of the third lens is d5, and the following relationships are satisfied: -1.46≤f3 / f≤-0.42; 0.02≤d5 / TTL≤0.

08.

9. The camera optical lens according to claim 1, characterized in that, The image side surface of the fourth lens is convex at the near axis; A focal length of the fourth lens is f4, a focal length of the camera optical lens is f, 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, and the following relationships are satisfied: 0.26 ≤ f4 / f ≤ 0.84; 0.47 ≤ (R7+R8) / (R7-R8) ≤ 1.74; 0.07 ≤ d7 / TTL ≤ 0.

28.

10. The camera optical lens according to claim 1, characterized in that, An object side surface of the fifth lens is convex at a paraxial region, and an image side surface of the fifth lens is concave at the paraxial region; A focal length of the fifth lens is f5, a focal length of the camera optical lens is f, a central curvature radius of an object side surface of the fifth lens is R9, a central curvature radius of an image side surface of the fifth lens is R10, an on-axis thickness of the fifth lens is d9, and the following relationships are satisfied: -1.12 ≤ f5 / f ≤ -0.35; 0.52 ≤ (R9+R10) / (R9-R10) ≤ 2.07; 0.05 ≤ d9 / TTL ≤ 0.29.

Images