Camera lens

Abstract

The application relates to the field of optical lenses and discloses a camera optical lens, which is sequentially arranged from the object side to the image side by a first lens with negative refractive power, a second lens with positive refractive power, a third lens with positive refractive power, a fourth lens with negative refractive power and a fifth lens with positive refractive power; wherein the focal length of the third lens is f3, the focal length of the fourth lens is f4, the on-axis thickness of the second lens is d3, the on-axis thickness of the third lens is d5, the total optical length of the camera optical lens is TTL, 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, the focal length of the first lens is f1, and the following relationships are satisfied: -0.65 <= f3 / f4 <= -0.50; 0.25 <= (d3+d5) / TTL <= 0.35; 1.00 <= (R1+R2) / f1 <= 2.00.

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 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 requirement of system on imaging quality, five-piece lens structure gradually appears in lens design. There is an urgent need for wide-angle camera lenses with excellent optical characteristics, small size and fully corrected aberrations. SUMMARY

[0003] 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.

[0004] To achieve the above purpose, the technical scheme of the present application provides a camera optical lens, which is composed of a first lens with negative refractive power, a second lens with positive refractive power, a third lens with positive refractive power, a fourth lens with negative refractive power and a fifth lens with positive refractive power arranged in order from the object side to the image side; wherein the focal length of the third lens is f3, the focal length of the fourth lens is f4, the on-axis thickness of the second lens is d3, the on-axis thickness of the third lens is d5, the total optical length of the camera optical lens is TTL, the central curvature radius of the object side of the first lens is R1, the central curvature radius of the image side of the first lens is R2, the focal length of the first lens is f1, and the following relationships are satisfied: -0.65≤f3 / f4≤-0.50; 0.25≤(d3+d5) / TTL≤0.35; 1.00≤(R1+R2) / f1≤2.00.

[0005] Preferably, the central curvature radius of the object side of the fifth lens is R9, the central curvature radius of the image side of the fifth lens is R10, and the following relationships are satisfied: -4.00≤R9 / R10≤-1.50.

[0006] Preferably, an edge thickness of the first lens is ET1, an on-axis thickness of the first lens is d1, and the following relation is satisfied: 1.81 ≤ ET1 / d1 ≤ 2.10.

[0007] Preferably, a focal length of the fifth lens is f5, an on-axis thickness of the fifth lens is d9, and the following relation is satisfied: 2.00 ≤ f5 / d9 ≤ 3.00.

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

[0009] Preferably, an object side surface of the second lens is convex at the 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, a focal length of the camera optical lens is f, a central radius of curvature of the object side surface of the second lens is R3, a central radius of curvature of the image side surface of the second lens is R4, an on-axis thickness of the second lens is d3, and the following relations are satisfied: 4.43 ≤ f2 / f ≤ 5.49; -2.76 ≤ (R3+R4) / (R3-R4) ≤ -1.39; 0.177 ≤ d3 / TTL ≤ 0.249.

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

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

[0012] Preferably, the object-side surface of the fifth lens is convex at the paraxial position, and the image-side surface of the fifth lens is convex at the paraxial position; the focal length of the fifth lens is f5, the focal length of the camera optical lens is f, the axial thickness of the fifth lens is d9, and the following relationship is satisfied: 1.92≤f5 / f≤2.17; 0.111≤d9 / TTL≤0.155.

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

[0014] The beneficial effects of the present invention are that the camera optical lens according to the present invention has excellent optical properties, and has the characteristics of large aperture, wide angle, and ultra-thinness, and is particularly suitable for mobile phone camera lens assemblies and WEB camera lenses composed of high-pixel CCD, CMOS and other camera elements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

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

[0017] Figure 2 yes Figure 1 Schematic diagram of axial aberration of the camera optical lens shown;

[0018] Figure 3 yes Figure 1 Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0019] Figure 4 yes Figure 1 Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0020] Figure 5 2 is a schematic structural diagram of a second embodiment of an imaging optical lens according to the present invention;

[0021] Figure 6 yes Figure 5 Schematic diagram of axial aberration of the camera optical lens shown;

[0022] Figure 7 yes Figure 5 Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0023] Figure 8 is Figure 5 axial chromatic aberration of the photographing optical lens shown in FIG. 6;

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

[0025] Figure 10 is Figure 9 axial chromatic aberration of the photographing optical lens shown in FIG. 6;

[0026] Figure 11 is Figure 9 lateral chromatic aberration of the photographing optical lens shown in FIG. 6;

[0027] Figure 12 is Figure 9 axial chromatic aberration of the photographing optical lens shown in FIG. 6;

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

[0029] Figure 14 is Figure 13 axial chromatic aberration of the photographing optical lens shown in FIG. 6;

[0030] Figure 15 is Figure 13 lateral chromatic aberration of the photographing optical lens shown in FIG. 6;

[0031] Figure 16 is Figure 13 axial chromatic aberration of the photographing optical lens shown in FIG. 6;

[0032] Figure 17 is a structural schematic diagram of the photographing optical lens of the fifth embodiment of the present application;

[0033] Figure 18 is Figure 17 axial chromatic aberration of the photographing optical lens shown in FIG. 6;

[0034] Figure 19 is Figure 17 lateral chromatic aberration of the photographing optical lens shown in FIG. 6;

[0035] Figure 20 is Figure 17 axial chromatic aberration of the photographing optical lens shown in FIG. 6;

[0036] Figure 21 is a structural schematic diagram of the photographing optical lens of the comparative embodiment;

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

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

[0039] Figure 24 is Figure 21 Field curvature and distortion schematic diagram of the camera optical lens shown in the figure. DETAILED DESCRIPTION

[0040] 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 drawings. However, those skilled in the art can understand that in the embodiments of the present application, many technical details are proposed 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.

[0041] With reference to the drawings, the technical solutions of the present application provide a camera optical lens 10, 20, 30, 40, 50. Figure 1 、 5 , 9, 13, 17 are the camera optical lens 10, 20, 30, 40, 50 of the present application, which comprises five lenses. Specifically, the camera optical lens is composed of a first lens L1 with negative refractive power, a second lens L2 with positive refractive power, a third lens L3 with positive refractive power, a fourth lens L4 with negative refractive power, and a fifth lens L5 with positive refractive power arranged in order from the object side to the image side.

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

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

[0044] The curvature radius of the object side surface of the first lens is defined as R1, the curvature radius of the image side surface of the first lens is defined as R2, the focal length of the first lens is defined as f1, and 1.00≤(R1+R2) / f1≤2.00. Within the range of the conditional expression, the surface shape of the first lens can be reasonably controlled, which helps to reduce the sensitivity of the system and also reduces the stray light generated by the lens, thereby improving the imaging quality of the lens.

[0045] Under the condition of meeting the above several conditional expressions, the camera optical lens 10, 20, 30, 40, 50 has good optical performance while meeting the design requirements of large aperture, wide angle, and ultra-thin. According to the characteristics of the camera optical lens 10, 20, 30, 40, 50, the camera optical lens 10, 20, 30, 40, 50 is particularly suitable for mobile phone camera lens assemblies and WEB cameras composed of high-pixel CCD, CMOS, and other camera elements.

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

[0047] The central curvature radius of the object side surface of the fifth lens is defined as R9, the central curvature radius of the image side surface of the fifth lens is defined as R10, and -4.00≤R9 / R10≤-1.50. The shape of the fifth lens L5 is specified. When within the range, with the development of ultra-thin wide-angle, it is beneficial to correct the astigmatism and distortion of the camera, so that the distortion is less than or equal to 5%.

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

[0049] The focal length of the fifth lens is defined as f5, and the on-axis thickness of the fifth lens is defined as d9, and 2.00≤f5 / d9≤3.00. Within the range of the conditional expression, it is helpful for the fifth lens to maintain a strong positive refractive power to correct the off-axis aberration at the image side, which can effectively shorten the total optical length and make the camera optical lens miniaturized.

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

[0051] The focal length of the camera optical lens is defined as f, and the on-axis thickness of the first lens is defined as d1, and -1.49≤f1 / f≤-1.40. The ratio of the negative refractive power of the first lens L1 to the overall focal length is specified. When within the specified range, the first lens has an appropriate negative refractive power, which is beneficial to reduce the system aberration and also beneficial to the development of the lens towards ultra-thin and wide-angle.

[0052] The central curvature radius of the object side surface of the first lens L1 is defined as R1, and the central curvature radius of the image side surface of the first lens L1 is defined as R2, and the following relationship is satisfied: 0.40≤(R1+R2) / (R1-R2)≤0.57. The shape of the first lens L1 is reasonably controlled, so that the first lens L1 can effectively correct the system spherical aberration.

[0053] The on-axis thickness of the first lens L1 is defined as d1, and the total optical length of the camera optical lens 10 is defined as TTL, and the following relationship is satisfied: 0.101≤d1 / TTL≤0.118. Within the conditional range, it is beneficial to realize ultra-thinning.

[0054] 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. The object side surface and the image side surface of the second lens L2 can also be provided in other concave and convex distribution conditions.

[0055] The focal length of the camera optical lens 10 is defined as f, and the focal length of the second lens L2 is defined as f2, and the following relationship is satisfied: 4.43≤f2 / f≤5.49. By controlling the positive focal power of the second lens L2 within a reasonable range, it is beneficial to correct the aberration of the optical system.

[0056] 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, and the following relationship is satisfied: -2.76≤(R3+R4) / (R3-R4)≤-1.39. The shape of the second lens L2 is specified, and when it is within the range, it is beneficial to correct the on-axis chromatic aberration problem as the lens develops towards ultra-thin wide-angle.

[0057] The on-axis thickness of the second lens L2 is defined as d3, and the total optical length of the camera optical lens 10 is defined as TTL, and the following relationship is satisfied: 0.177≤d3 / TTL≤0.249. Within the conditional range, it is beneficial to realize ultra-thinning.

[0058] The object side surface of the third lens L3 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 third lens L3 can also be provided in other concave and convex distribution conditions.

[0059] The focal length of the camera optical lens 10 is defined as f, and the focal length of the third lens L3 is defined as f3, and the following relationship is satisfied: 1.60≤f3 / f≤1.71. Through reasonable allocation of focal power, the system has better imaging quality and lower sensitivity.

[0060] The central curvature radius of the object side surface of the third lens L3 is R5, the central curvature radius of the image side surface of the third lens L3 is R6, and the following relationship is satisfied: 0.24≤(R5+R6) / (R5-R6)≤0.38, which defines the shape of the third lens L3, is conducive to the molding of the third lens L3, and in the conditional range, the degree of deflection of light passing through the lens can be eased, and aberration can be effectively reduced.

[0061] The on-axis thickness of the third lens L3 is d5, and the total optical length of the camera optical lens 10 is TTL, and the following relationship is satisfied: 0.049≤d5 / TTL≤0.109, which is conducive to the realization of ultra-thinning in the conditional range.

[0062] The object side surface of the fourth lens L4 is convex at the near axis, and the image side surface is concave at the near axis. The object side surface and the image side surface of the fourth lens L4 can also be provided in other concave and convex distribution conditions.

[0063] The focal length of the camera optical lens 10 is defined as f, and the focal length of the fourth lens L4 is f4, and the following relationship is satisfied: -3.27≤f4 / f≤-2.57, which, through reasonable distribution of optical power, makes the system have better imaging quality and lower sensitivity.

[0064] The central curvature radius of the object side surface of the fourth lens L4 is R7, and the central curvature radius of the image side surface of the fourth lens L4 is R8, and the following relationship is satisfied: 2.42≤(R7+R8) / (R7-R8)≤3.00, which defines the shape of the fourth lens L4, and is conducive to correcting aberrations and other problems at off-axis angles when the range is satisfied. angle.

[0065] The on-axis thickness of the fourth lens L4 is d7, and the total optical length of the camera optical lens 10 is TTL, and the following relationship is satisfied: 0.040≤d7 / TTL≤0.045, which is conducive to the realization of ultra-thinning in the conditional range.

[0066] The object side surface of the fifth lens L5 is convex at the near axis, and the image side surface is convex at the near axis. The object side surface and the image side surface of the fifth lens L5 can also be provided in other concave and convex distribution conditions.

[0067] The focal length of the camera optical lens 10 is defined as f, and the focal length of the fifth lens L5 is f5, and the following relationship is satisfied: 1.92≤f5 / f≤2.17, which effectively makes the light angle of the camera optical lens 10 gentle, and reduces the tolerance sensitivity.

[0068] The on-axis thickness of the fifth lens L5 is d9, and the total optical length of the camera optical lens 10 is TTL, and the following relationship is satisfied: 0.111≤d9 / TTL≤0.155, which is within the conditional range, and is conducive to achieving ultra-thin.

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

[0070] In the present application, the first lens L1 is made of plastic, the second lens L2 is made of plastic, the third lens L3 is made of plastic, the fourth lens L4 is made of plastic, and the fifth lens L5 is made of plastic. Each lens can also be made of other materials.

[0071] In the present application, an optical filter GF or the like is provided between the fifth lens L5 and the image plane Si, wherein the optical filter GF can be a glass cover plate or an optical filter. The optical filter GF can also be provided at other positions.

[0072] In the present application, an aperture S1 can also be provided between the third lens L3 and the fourth lens L4, and the aperture S1 can also be provided at other positions.

[0073] The camera optical lens of the present application will be described below with examples. The symbols described in each example are as follows. The units of focal length, on-axis distance, central curvature radius, and on-axis thickness are mm.

[0074] TTL: total optical length (on-axis distance from the object side of the first lens L1 to the image plane Si), unit: mm;

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

[0076] Image height IH of 1.0 field of view: the field of view height corresponding to the effective image element of the sensor (i.e. half of the diagonal length of the effective image element region of the sensor);

[0077] Field of view angle FOV of 1.0 field of view: the field of view angle corresponding to the effective image element of the sensor;

[0078] Image height IHm of MIC field of view: the field of view height for preventing assembly deviation by expanding 1.0;

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

[0080] Next, the technical solutions of the present application will be described in detail in five embodiments, and a comparative embodiment is provided as a reference. When the above-mentioned conditional range is exceeded, the technical effects of the present application cannot be achieved.

[0081] (first embodiment)

[0082] Table 1, Table 2 show the design data of the photographing optical lens 10 of the first embodiment of the present application.

[0083]

Table 1

[0084]

[0085] Wherein, the meaning of each symbol is as follows.

[0086] S1: aperture;

[0087] R: central radius of curvature of optical surface;

[0088] R1: central radius of curvature of object side surface of first lens L1;

[0089] R2: central radius of curvature of image side surface of first lens L1;

[0090] R3: central radius of curvature of object side surface of second lens L2;

[0091] R4: central radius of curvature of image side surface of second lens L2;

[0092] R5: central radius of curvature of object side surface of third lens L3;

[0093] R6: central radius of curvature of image side surface of third lens L3;

[0094] R7: central radius of curvature of object side surface of fourth lens L4;

[0095] R8: central radius of curvature of image side surface of fourth lens L4;

[0096] R9: central radius of curvature of object side surface of fifth lens L5;

[0097] R10: central radius of curvature of image side surface of fifth lens L5;

[0098] R11: central radius of curvature of object side surface of optical filter GF;

[0099] R12: central radius of curvature of image side surface of optical filter GF;

[0100] d: on-axis thickness of lens and on-axis distance between lenses;

[0101] d0: on-axis distance from aperture S1 to object side surface of first lens L1;

[0102] d1: on-axis thickness of first lens L1;

[0103] d2: an on-axis distance from an image-side surface of the first lens L1 to an object-side surface of the second lens L2;

[0104] d3: an on-axis thickness of the second lens L2;

[0105] d4: an on-axis distance from an image-side surface of the second lens L2 to an object-side surface of the third lens L3;

[0106] d5: an on-axis thickness of the third lens L3;

[0107] 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;

[0108] d7: an on-axis thickness of the fourth lens L4;

[0109] 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;

[0110] d9: an on-axis thickness of the fifth lens L5;

[0111] 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;

[0112] d11: an on-axis thickness of the optical filter GF;

[0113] d12: an on-axis distance from an image-side surface of the optical filter GF to an image plane Si;

[0114] nd: a refractive index of a d-line;

[0115] nd1: a refractive index of a d-line of the first lens L1;

[0116] nd2: a refractive index of a d-line of the second lens L2;

[0117] nd3: a refractive index of a d-line of the third lens L3;

[0118] nd4: a refractive index of a d-line of the fourth lens L4;

[0119] nd5: a refractive index of a d-line of the fifth lens L5;

[0120] ndg: a refractive index of a d-line of the optical filter GF;

[0121] vd: an Abbe number;

[0122] vd1: an Abbe number of the first lens L1;

[0123] vd2: an Abbe number of the second lens L2;

[0124] vd3: an Abbe number of the third lens L3;

[0125] vd4: Abbe number of the fourth lens L4;

[0126] vd5: Abbe number of the fifth lens L5;

[0127] vdg: Abbe number of the optical filter GF.

[0128] Table 2 shows aspherical surface data of each lens in the imaging optical lens 10 of the first embodiment of the present application.

[0129]

Table 2

[0130]

[0131]

[0132] 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).

[0133] z = (cr 2 ) / {1 + [1 - (k + 1)(c 2 r 2 )] 1 / 2} + A4r 4 + A6r 6 + A8r 8 + A10r 10 + A12r 12 + A14r

[0134] 14 + A16r 16 + A18r 18 + A20r 20 + A22r 22 + A24r 24 + A26r 26 + A28r 28 + A30r 30 ; (1)

[0135] 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 tangent to the aspherical surface at the vertex on the optical axis).

[0136] Figure 2 、 Figure 3Schematic diagrams showing axial aberration and chromatic aberration of magnification of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing through the imaging optical lens 10 of the first embodiment are shown respectively. Figure 4 FIG1 shows a schematic diagram of field curvature and distortion of light having a wavelength of 555 nm after passing 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.

[0137] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 10 is 0.548 mm, the image height IH of the 1.0 field of view is 1.30 mm, the field of view angle FOV of the 1.0 field of view is 117.82°, the image height IHm of the MIC field of view is 1.40 mm, and the field of view angle FOVm of the MIC field of view is 123.77°. The camera optical lens 10 meets the design requirements of large aperture, wide angle, and ultra-thinness, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0138] (Second embodiment)

[0139] The meanings of the symbols in the second embodiment are the same as those in the first embodiment.

[0140] Figure 5 FIG. 2 shows an imaging optical lens 20 according to a second embodiment of the present invention.

[0141] Tables 3 and 4 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.

[0142]

Table 3

[0143]

[0144] Table 4 shows aspherical surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.

[0145]

Table 4

[0146]

[0147]

[0148] Figure 6 、 Figure 7 Schematic diagrams respectively show the axial aberration and chromatic aberration of magnification of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing through the imaging optical lens 20 of the second embodiment. Figure 8 FIG. 4 shows a schematic diagram of field curvature and distortion of light with a wavelength of 555 nm after passing through the imaging optical lens 20 of the second embodiment. Figure 8The field curvature S is the sagittal field curvature, and T is the tangential field curvature.

[0149] In the embodiment, the entrance pupil diameter ENPD of the photographing optical lens 20 is 0.531 mm, the image height IH of 1.0 field of view is 1.27 mm, the field of view FOV of 1.0 field of view is 118.51°, the image height IHm of MIC field of view is 1.39 mm, the field of view FOVm of MIC field of view is 123.90°, the photographing optical lens 20 meets the design requirements of large aperture, wide angle, and ultra-thin, the on-axis and off-axis chromatic aberration is fully corrected, and has excellent optical characteristics.

[0150] (third embodiment)

[0151] The symbol meanings of the third embodiment are the same as those of the first embodiment.

[0152] Figure 9 The photographing optical lens 30 of the third embodiment of the present application is shown.

[0153] Tables 5 and 6 show the design data of the photographing optical lens 30 of the third embodiment of the present application.

[0154]

Table 5

[0155]

[0156] Table 6 shows the aspheric surface data of each lens in the photographing optical lens 30 of the third embodiment of the present application.

[0157]

Table 6

[0158]

[0159] Figure 10 、 Figure 11 The axial aberration and the magnification chromatic aberration schematic 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 are shown respectively. Figure 12 The field curvature and distortion schematic diagram of light with a wavelength of 555 nm after passing through the photographing optical lens 30 of the third embodiment is shown. Figure 12 The field curvature S is the sagittal field curvature, and T is the tangential field curvature.

[0160] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 30 is 0.532 mm, the image height IH of the 1.0 field of view is 1.22 mm, the field of view angle FOV of the 1.0 field of view is 119.31°, the image height IHm of the MIC field of view is 1.40 mm, and the field of view angle FOVm of the MIC field of view is 125.17°. The camera optical lens 30 meets the design requirements of large aperture, wide angle, and ultra-thinness, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0161] (Fourth embodiment)

[0162] The meanings of the symbols in the fourth embodiment are the same as those in the first embodiment.

[0163] Figure 13 FIG. 4 shows an imaging optical lens 40 according to a fourth embodiment of the present invention.

[0164] Tables 7 and 8 show design data of the imaging optical lens 40 according to the fourth embodiment of the present invention.

[0165]

Table 7

[0166]

[0167]

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

[0169]

Table 8

[0170]

[0171] Figure 14 、 Figure 15 Schematic diagrams showing axial aberration and chromatic aberration of magnification 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 are shown respectively. Figure 16 FIG. 4 shows a schematic diagram of field curvature and distortion of light with a wavelength of 555 nm after passing through the imaging 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.

[0172] In the embodiment, the entrance pupil diameter ENPD of the photographing optical lens 40 is 0.512 mm, the image height IH of 1.0 field of view is 1.25 mm, the field of view angle FOV of 1.0 field of view is 121.22°, the image height IHm of MIC field of view is 1.39 mm, the field of view angle FOVm of MIC field of view is 118.28°, the photographing optical lens 40 meets the design requirements of large aperture, wide angle, and ultra-thin, the on-axis and off-axis chromatic aberration is fully corrected, and the photographing optical lens 40 has excellent optical characteristics.

[0173] (Fifth Embodiment)

[0174] The symbol meanings of the fifth embodiment are the same as those of the first embodiment.

[0175] Figure 17 The photographing optical lens 50 of the fifth embodiment of the present application is shown.

[0176] Tables 9 and 10 show the design data of the photographing optical lens 50 of the fifth embodiment of the present application.

[0177]

Table 9

[0178]

[0179] Table 10 shows the aspheric surface data of each lens in the photographing optical lens 50 of the fifth embodiment of the present application.

[0180]

Table 10

[0181]

[0182]

[0183] Figure 18 、 Figure 19 The axial aberration and the magnification chromatic aberration schematic diagrams 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 are shown respectively. Figure 20 The field curvature and distortion schematic diagram of light with a wavelength of 555 nm after passing through the photographing optical lens 50 of the fifth embodiment is shown. Figure 20 The field curvature S is the sagittal direction field curvature, and T is the tangential direction field curvature.

[0184] In the embodiment, the entrance pupil diameter ENPD of the photographing optical lens 50 is 0.517 mm, the image height IH of 1.0 field of view is 1.24 mm, the field of view angle FOV of 1.0 field of view is 120.78°, the image height IHm of MIC field of view is 1.39 mm, the field of view angle FOVm of MIC field of view is 126.53°, the photographing optical lens 50 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 50 has excellent optical characteristics.

[0185] The later appearing Table 13 shows the values corresponding to the parameters specified in the condition formulas for the various numerical values in the first, second, third, fourth and fifth embodiments.

[0186] (Comparative Embodiment)

[0187] The symbol meanings of the comparative embodiment are the same as those of the first embodiment.

[0188] Figure 21 The photographing optical lens 60 of the comparative embodiment is shown.

[0189] Tables 11 and 12 show the design data of the photographing optical lens 60 of the comparative embodiment.

[0190] [Table 11]

[0191]

[0192] Table 12 shows the aspheric surface data of each lens in the photographing optical lens 60 of the comparative embodiment.

[0193] [Table 12]

[0194]

[0195]

[0196] Figure 22 、 Figure 23 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 passing through the photographing optical lens 60 of the comparative embodiment are shown respectively. Figure 24 The field curvature and distortion diagrams of light with a wavelength of 555 nm passing through the photographing optical lens 60 of the comparative embodiment are shown. Figure 24 The field curvature S is the sagittal field curvature, and T is the tangential field curvature.

[0197] The following Table 13 lists the numerical values corresponding to each condition formula in the comparative embodiment according to the above condition formulas. Obviously, the photographing optical lens 60 of the comparative embodiment does not meet the condition formula -0.65≤f3 / f4≤-0.50.

[0198] In the comparative embodiment, the entrance pupil diameter ENPD of the photographing optical lens 30 is 0.562 mm, the image height IH of 1.0 field of view is 1.20 mm, the field of view angle FOV of 1.0 field of view is 123.17°, the image height IHm of MIC field of view is 1.45 mm, the field of view angle FOVm of MIC field of view is 131.88°, and various aberrations of the photographing optical lens 60 are not fully corrected, and the photographing optical lens 60 does not have excellent optical characteristics.

[0199]

Table 13

[0200]

[0201]

[0202] It can be understood by those skilled in the art that the above-mentioned embodiments are specific embodiments for implementing the present application, and in actual application, 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 is composed of a first lens with negative refractive power, a second lens with positive refractive power, a third lens with positive refractive power, a fourth lens with negative refractive power and a fifth lens with positive refractive power arranged in sequence from the object side to the image side; Wherein, the focal length of the second lens is f2, the focal length of the camera optical lens is f, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the on-axis thickness of the second lens is d3, the on-axis thickness of the third lens is d5, the total optical length of the camera optical lens is TTL, 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, the focal length of the first lens is f1, the edge thickness of the first lens is ET1, the on-axis thickness of the first lens is d1, and the following relationships are satisfied: 4.43≤f2 / f≤5.49; -0.65≤f3 / f4≤-0.50; 0.25≤(d3+d5) / TTL≤0.35; 1.00≤(R1+R2) / f1≤2.00; 1.81≤ET1 / d1≤2.

10.

2. The camera optical lens according to claim 1, wherein, The central curvature radius of the object side surface of the fifth lens is R9, the central curvature radius of the image side surface of the fifth lens is R10, and the following relationships are satisfied: -4.00≤R9 / R10≤-1.

50.

3. The camera optical lens according to claim 1, wherein, The focal length of the fifth lens is f5, the on-axis thickness of the fifth lens is d9, and the following relationships are satisfied: 2.00≤f5 / d9≤3.

00.

4. The camera optical lens according to claim 1, characterized in that, The object side surface of the first lens is concave at the paraxial region, and the image side surface of the first lens is concave at the paraxial region; And the following relationships are satisfied: -1.49≤f1 / f≤-1.40; 0.40≤(R1+R2) / (R1-R2)≤0.57; 0.101≤d1 / TTL≤0.

118.

5. The camera optical lens according to claim 1, wherein, 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 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 on-axis thickness of the second lens is d3, and the following relationships are satisfied: -2.76≤(R3+R4) / (R3-R4)≤-1.39; 0.177≤d3 / TTL≤0.

249.

6. The camera optical lens according to claim 1, characterized in that, The object side surface of the third lens is convex at the paraxial region, and the image side surface of the third lens is convex at the paraxial region; 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, the on-axis thickness of the third lens is d5, and the following relationships are satisfied: 1.60≤f3 / f≤1.71; 0.24≤(R5+R6) / (R5-R6)≤0.38; 0.049≤d5 / TTL≤0.

109.

7. The camera optical lens according to claim 1, wherein, The object side surface of the fourth lens is convex at the paraxial region, and the image side surface of the fourth lens is concave at the paraxial region; 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 relations are satisfied: -3.27≤f4 / f≤-2.57; 2.42≤(R7+R8) / (R7-R8)≤3.00; 0.040≤d7 / TTL≤0.

045.

8. 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 convex at the paraxial region; A focal length of the fifth lens is f5, an on-axis thickness of the fifth lens is d9, and the following relations are satisfied: 1.92≤f5 / f≤2.17; 0.111≤d9 / TTL≤0.

155.

9. The camera optical lens according to claim 1, characterized in that, An optical total track length of the photographing optical lens is TTL, an image height of a 1.0 field of view of the photographing optical lens is IH, and the following relation is satisfied: 3.81≤TTL / IH≤4.02.

Images