Shooting optical lens

Abstract

The invention relates to the field of optical lenses, and discloses a camera shooting optical lens which comprises a first lens with negative refraction power, a second lens with positive refraction power, a third lens with positive refraction power, a fourth lens with negative refraction power and a fifth lens with positive refraction power which are sequentially arranged 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 thickness on the axis of the second lens is d3, the thickness on the axis of the third lens is d5, the total optical length of the camera shooting optical lens is TTL, the center curvature radius of the object side face of the first lens is R1, the center curvature radius of the image side face of the first lens is R2, the focal length of the first lens is f1, and the following relational expressions 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 invention relates to the field of optical lenses, and in particular to a camera optical lens suitable for portable terminal devices such as smart phones and digital cameras, as well as camera devices such as monitors and PC lenses. Background Art

[0002] In recent years, with the rise of various smart devices, the demand for miniaturized camera optical lenses has been increasing. Due to the reduction in the pixel size of photosensitive devices and the trend of today's electronic products to have good functions and a thin and portable appearance, miniaturized camera optical lenses with good imaging quality have become the mainstream in the current market. In order to obtain better imaging quality, a multi-piece lens structure is often used. In addition, with the development of technology and the increase in user's diversified needs, as the pixel area of ​​photosensitive devices continues to shrink and the system's requirements for imaging quality continue to increase, a five-piece lens structure has gradually appeared in lens design. There is an urgent need for wide-angle camera lenses with excellent optical characteristics, small size, and fully corrected aberrations. Summary of the invention

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

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention 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, which are arranged in sequence 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 axial thickness of the second lens is d3, the axial 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 relationship is 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 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 relationship is satisfied: -4.00≤R9 / R10≤-1.50.

[0006] Preferably, the edge thickness of the first lens is ET1, the axial thickness of the first lens is d1, and the following relationship is satisfied: 1.81≤ET1 / d1≤2.10.

[0007] Preferably, the focal length of the fifth lens is f5, the axial thickness of the fifth lens is d9, and the following relationship is satisfied: 2.00≤f5 / d9≤3.00.

[0008] Preferably, the object side surface of the first lens is concave at the paraxial position, and the image side surface of the first lens is concave at the paraxial position; the focal length of the camera optical lens is f, the axial thickness of the first lens is d1, 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.

[0009] Preferably, the object side surface of the second lens is convex at the paraxial position, and the image side surface of the second lens is concave at the paraxial position; the focal length of the second lens is f2, the focal length of the camera optical lens is f, the 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 axial thickness of the second lens is d3, and the following relationships are satisfied: 4.43≤f2 / f≤5.49; -2.76≤(R3+R4) / (R3-R4)≤-1.39; 0.177≤d3 / TTL≤0.249.

[0010] Preferably, the object side surface of the third lens is convex at the paraxial position, and the image side surface of the third lens is convex at the paraxial position; the focal length of the camera optical lens is f, 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 axial thickness of the third lens is d5, and the following relationship is satisfied: 1.60≤f3 / f≤1.71; 0.24≤(R5+R6) / (R5-R6)≤0.38; 0.049≤d5 / TTL≤0.109.

[0011] Preferably, the object side surface of the fourth lens is convex at the paraxial position, and the image side surface of the fourth lens is concave at the paraxial position; the focal length of the camera optical lens is f, the central curvature radius of the object side surface of the fourth lens is R7, the central curvature radius of the image side surface of the fourth lens is R8, the axial thickness of the fourth lens is d7, and the following relationship is 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 as follows: 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. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0016] Figure 1 is a schematic structural diagram of an imaging 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 is a schematic structural diagram of an imaging optical lens according to a second embodiment of 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 yes Figure 5 Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0024] Fig. 9 is a schematic structural diagram of a camera optical lens according to a third embodiment of the present invention;

[0025] Fig.10 yes Fig. 9 Schematic diagram of axial aberration of the camera optical lens shown;

[0026] Fig.11 yes Fig. 9 Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0027] Fig.12 yes Fig. 9 Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0028] Fig.13 is a schematic structural diagram of a camera optical lens according to a fourth embodiment of the present invention;

[0029] Fig.14 yes Fig.13 Schematic diagram of axial aberration of the camera optical lens shown;

[0030] Fig.15 yes Fig.13 Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0031] Fig.16 yes Fig.13 Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0032] Fig.17 is a schematic structural diagram of an imaging optical lens according to a fifth embodiment of the present invention;

[0033] Fig.18 yes Fig.17 Schematic diagram of axial aberration of the camera optical lens shown;

[0034] Fig.19 yes Fig.17 Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0035] Fig. 20 yes Fig.17 Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0036] Fig.21 is a schematic structural diagram of a camera optical lens according to a comparative implementation mode;

[0037] Fig. 22 yes Fig.21Schematic diagram of axial aberration of the camera optical lens shown;

[0038] Fig.23 yes Fig.21 Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0039] Fig.24 yes Fig.21 Schematic diagram of field curvature and distortion of the camera optical lens shown. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the embodiments of the present invention, many technical details are provided to enable readers to better understand the present invention. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present invention can be implemented.

[0041] With reference to the accompanying drawings, the technical solution of the present invention provides an imaging optical lens 10 , 20 , 30 , 40 , 50 . Figure 1 , 5 , 9, 13, and 17 show the photographic optical lenses 10, 20, 30, 40, and 50 of the present invention, and the photographic optical lenses 10, 20, 30, 40, and 50 include five lenses in total. Specifically, the photographic optical lenses are 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, which are arranged in sequence 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, satisfying the following relationship: -0.65≤f3 / f4≤-0.50. The focal length ratio of the third lens and the fourth lens is specified, and the optical focal length of the camera optical lens can be reasonably allocated, 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 defined as TTL, wherein: 0.25≤(d3+d5) / TTL≤0.35. The on-axis thicknesses of the second lens and the third lens can be reasonably specified in the conditional formula, which helps to compress the total length of the camera optical system.

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

[0045] When the above conditions are met, the camera optical lenses 10, 20, 30, 40, 50 have good optical performance and can meet the design requirements of large aperture, wide angle and ultra-thinness. According to the characteristics of the camera optical lenses 10, 20, 30, 40, 50, the camera optical lenses 10, 20, 30, 40, 50 are particularly suitable for mobile phone camera lens assemblies and WEB camera lenses 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 detailed as follows.

[0047] 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, -4.00≤R9 / R10≤-1.50, which specifies the shape of the fifth lens L5. When within the range, with the development of ultra-thin and 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 ET1, the axial thickness of the first lens is d1, and 1.81≤ET1 / d1≤2.10 specifies the ratio of the edge thickness to the axial thickness of the first lens L1, which is helpful for lens processing and lens assembly.

[0049] The focal length of the fifth lens is f5, the axial thickness of the fifth lens is d9, and 2.00≤f5 / d9≤3.00. Within the conditional range, the fifth lens can maintain positive refraction of sufficient strength to correct off-axis aberrations at the image side end, which can effectively shorten the total optical length and miniaturize the camera optical lens.

[0050] The object side surface of the first lens L1 is concave at the paraxial position, and the image side surface is concave at the paraxial position. The object side surface and the image side surface of the first lens L1 can also be set to other concave or convex distributions.

[0051] The focal length of the camera optical lens is defined as f, the axial thickness of the first lens is defined as d1, -1.49≤f1 / f≤-1.40, and the ratio of the negative refractive power of the first lens L1 to the overall focal length is defined. Within the defined range, the first lens has an appropriate negative refractive power, which is beneficial to reducing system aberrations and is also beneficial to the development of ultra-thin and wide-angle lenses.

[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, satisfying the following relationship: 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 axial thickness of the first lens L1 is d1, and the total optical length of the camera optical lens 10 is TTL, which satisfies the following relationship: 0.101≤d1 / TTL≤0.118. Within the range of the conditional expression, it is conducive to achieving ultra-thinness.

[0054] The object side surface of the second lens L2 is convex at the paraxial position, and the image side surface is concave at the paraxial position. The object side surface and the image side surface of the second lens L2 can also be set to other concave and convex distributions.

[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, satisfying the following relationship: 4.43≤f2 / f≤5.49. By controlling the positive focal length 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 R3, and the central curvature radius of the image side surface of the second lens L2 is R4, which satisfies the following relationship: -2.76≤(R3+R4) / (R3-R4)≤-1.39, which specifies the shape of the second lens L2. When it is within the range, as the lens develops towards ultra-thin and wide-angle, it is beneficial to correct the axial chromatic aberration problem.

[0057] The axial thickness of the second lens L2 is d3, and the total optical length of the camera optical lens 10 is TTL, which satisfies the following relationship: 0.177≤d3 / TTL≤0.249. Within the range of the conditional expression, it is conducive to achieving ultra-thinness.

[0058] The object side surface of the third lens L3 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 third lens L3 can also be set to other concave and convex distributions.

[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, which satisfy the following relationship: 1.60≤f3 / f≤1.71. Through the reasonable distribution of optical focal length, 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, and the central curvature radius of the image side surface of the third lens L3 is R6, which satisfies the following relationship: 0.24≤(R5+R6) / (R5-R6)≤0.38, which specifies the shape of the third lens L3 and is beneficial to the molding of the third lens L3. Within the range specified by the conditional formula, the degree of deflection of light passing through the lens can be alleviated, thereby effectively reducing aberrations.

[0061] The axial thickness of the third lens L3 is d5, and the total optical length of the camera optical lens 10 is TTL, which satisfies the following relationship: 0.049≤d5 / TTL≤0.109. Within the range of the conditional expression, it is conducive to achieving ultra-thinness.

[0062] The object side surface of the fourth lens L4 is convex at the paraxial position, and the image side surface is concave at the paraxial position. The object side surface and the image side surface of the fourth lens L4 can also be set to other concave and convex distributions.

[0063] The focal length of the camera optical lens 10 is defined as f, and the focal length of the fourth lens L4 is defined as f4, which satisfy the following relationship: -3.27≤f4 / f≤-2.57. Through the reasonable distribution of optical power, the system has 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 specifies the shape of the fourth lens L4. When within the range, with the development of ultra-thin and wide-angle, it is beneficial to correct the aberration of off-axis picture angles and other problems.

[0065] The axial thickness of the fourth lens L4 is d7, and the total optical length of the camera optical lens 10 is TTL, which satisfies the following relationship: 0.040≤d7 / TTL≤0.045. Within the range of the conditional expression, it is conducive to achieving ultra-thinness.

[0066] The object side surface of the fifth lens L5 is convex at the paraxial position, and the image side surface is convex at the paraxial position. The object side surface and the image side surface of the fifth lens L5 can also be set to other concave and convex distributions.

[0067] The focal length of the camera optical lens 10 is defined as f, and the focal length of the fifth lens L5 is defined as f5, which satisfy the following relationship: 1.92≤f5 / f≤2.17. The limitation on the fifth lens L5 can effectively make the light angle of the camera optical lens 10 smooth and reduce the tolerance sensitivity.

[0068] The axial thickness of the fifth lens L5 is d9, and the total optical length of the camera optical lens 10 is TTL, which satisfies the following relationship: 0.111≤d9 / TTL≤0.155. Within the range of the conditional expression, it is conducive to achieving ultra-thinness.

[0069] 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.

[0070] In the present invention, 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 may also be made of other materials.

[0071] In the present invention, an optical element such as an optical filter GF is disposed between the fifth lens L5 and the image plane Si, wherein the optical filter GF may be a glass cover plate or an optical filter. The optical filter GF may also be disposed at other positions.

[0072] In the present invention, an aperture S1 may be further disposed between the third lens L3 and the fourth lens L4, and the aperture S1 may also be disposed at other positions.

[0073] The following examples are used to illustrate the imaging optical lens of the present invention. The symbols recorded in each example are as follows: The focal length, axial distance, central curvature radius, and axial thickness are in units of mm.

[0074] TTL: total optical length (the axial distance from the object side of the first lens L1 to the image surface Si), in 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] 1.0 Image height IH of the field of view: the height of the field of view corresponding to the effective pixel of the sensor (that is, half of the diagonal length of the effective pixel area of ​​the sensor);

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

[0078] Image height IHm of MIC field of view: the field of view height expanded beyond 1.0 to prevent assembly deviation;

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

[0080] Next, the technical solution of the present invention is specifically described with five implementation modes. At the same time, a comparative implementation mode is provided as a reference. When the scope of the above conditional formula is exceeded, the technical effect of the present invention cannot be achieved.

[0081] (First Embodiment)

[0082] Table 1 and Table 2 show design data of the imaging optical lens 10 according to the first embodiment of the present invention.

[0083]

Table 1

[0084]

[0085] The meaning of each symbol is as follows.

[0086] S1: aperture;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[0101] d0: the axial distance from the aperture S1 to the object side of the first lens L1;

[0102] d1: axial thickness of the first lens L1;

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

[0104] d3: axial thickness of the second lens L2;

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

[0106] d5: axial thickness of the third lens L3;

[0107] d6: the axial distance from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;

[0108] d7: axial thickness of the fourth lens L4;

[0109] d8: the axial distance from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L5;

[0110] d9: axial thickness of the fifth lens L5;

[0111] d10: the axial distance from the image side surface of the fifth lens L5 to the object side surface of the optical filter GF;

[0112] d11: axial thickness of the optical filter GF;

[0113] d12: the axial distance from the image side of the optical filter GF to the image surface Si;

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

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

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

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

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

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

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

[0121] vd: Abbe number;

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

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

[0124] vd3: 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 according to the first embodiment of the present invention.

[0129]

Table 2

[0130]

[0131]

[0132] For convenience, the aspheric surface of each lens surface uses the aspheric surface shown in the following formula (1). However, the present invention is not limited to the aspheric surface 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 the cone coefficient, A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, A30 are aspheric coefficients, c is the curvature at the center of the optical surface, r is the vertical distance between the point on the aspheric curve and the optical axis, and z is the aspheric depth (the vertical distance between the point on the aspheric surface that is r away from the optical axis and the tangent plane tangent to the vertex on the aspheric optical axis).

[0136] Figure 2 , Figure 3Schematic diagrams showing axial aberration and magnification 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 10 of the first embodiment are shown respectively. Figure 4 FIG. 4 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 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 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 showing axial aberration and magnification 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 20 of the second embodiment are shown respectively. Figure 8 FIG. 4 is a schematic diagram showing the 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 field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0149] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 20 is 0.531 mm, the image height IH of the 1.0 field of view is 1.27 mm, the field angle FOV of the 1.0 field of view is 118.51°, the image height IHm of the MIC field of view is 1.39 mm, and the field angle FOVm of the MIC field of view is 123.90°. The camera optical lens 20 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.

[0150] (Third Embodiment)

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

[0152] Fig. 9 FIG. 1 shows an imaging optical lens 30 according to a third embodiment of the present invention.

[0153] Tables 5 and 6 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.

[0154]

Table 5

[0155]

[0156] Table 6 shows aspherical surface data of each lens in the imaging optical lens 30 according to the third embodiment of the present invention.

[0157]

Table 6

[0158]

[0159] Fig.10 , Fig.11 Schematic diagrams showing axial aberration and magnification 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 30 of the third embodiment are shown respectively. Fig.12 FIG. 4 is a schematic diagram showing the field curvature and distortion of light with a wavelength of 555 nm after passing through the imaging optical lens 30 of the third embodiment. Fig.12 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[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 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 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 symbols in the fourth embodiment are the same as those in the first embodiment.

[0163] Fig.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] Fig.14 , Fig.15 Schematic diagrams showing axial aberration and magnification 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 are shown respectively. Fig.16 FIG. 4 is a schematic diagram showing 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. Fig.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 this embodiment, the entrance pupil diameter ENPD of the camera optical lens 40 is 0.512 mm, the image height IH of the 1.0 field of view is 1.25 mm, the field angle FOV of the 1.0 field of view is 121.22°, the image height IHm of the MIC field of view is 1.39 mm, and the field angle FOVm of the MIC field of view is 118.28°. The camera optical lens 40 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.

[0173] (Fifth Embodiment)

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

[0175] Fig.17 FIG. 1 shows an imaging optical lens 50 according to a fifth embodiment of the present invention.

[0176] Tables 9 and 10 show design data of the imaging optical lens 50 according to the fifth embodiment of the present invention.

[0177]

Table 9

[0178]

[0179] Table 10 shows aspherical surface data of each lens in the imaging optical lens 50 according to the fifth embodiment of the present invention.

[0180]

Table 10

[0181]

[0182]

[0183] Fig.18 , Fig.19 Schematic diagrams showing axial aberration and magnification 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 50 of the fifth embodiment are shown respectively. Fig. 20 FIG. 4 is a schematic diagram showing the field curvature and distortion of light with a wavelength of 555 nm after passing through the imaging optical lens 50 of the fifth embodiment. Fig. 20 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

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

[0185] Table 13 that appears later shows the values ​​corresponding to the parameters specified in the conditional expressions and various numerical values ​​in each of the first, second, third, fourth, and fifth embodiments.

[0186] (Comparative Implementation)

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

[0188] Fig.21 Shown is a camera optical lens 60 according to a comparative embodiment.

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

[0190]

Table 11

[0191]

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

[0193]

Table 12

[0194]

[0195]

[0196] Fig. 22 , Fig.23 Schematic diagrams showing axial aberration and magnification 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 60 of the comparative embodiment are shown respectively. Fig.24 FIG. 4 is a schematic diagram showing the field curvature and distortion of light with a wavelength of 555 nm after passing through the camera optical lens 60 of the comparative embodiment. Fig.24 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0197] Table 13 below lists the values ​​corresponding to the various conditional expressions in the comparative embodiment according to the above conditional expressions. Obviously, the imaging optical lens 60 of the comparative embodiment does not satisfy the following conditional expression: -0.65≤f3 / f4≤-0.50.

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

[0199]

Table 13

[0200]

[0201]

[0202] Those skilled in the art will appreciate that the above-mentioned embodiments are specific embodiments for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A camera optical lens, characterized in that: The camera optical lens 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, which are arranged in sequence from the object side to the image side; Among them, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the axial thickness of the second lens is d3, the axial 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 relationship is satisfied: -0.65≤f3 / f4≤-0.50; 0.25≤(d3+d5) / TTL≤0.35; 1.00≤(R1+R2) / f1≤2.

00.

2. The imaging optical lens according to claim 1, characterized in that: 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 relationship is satisfied: -4.00≤R9 / R10≤-1.

50.

3. The imaging optical lens according to claim 1, characterized in that: The edge thickness of the first lens is ET1, the axial thickness of the first lens is d1, and the following relationship is satisfied: 1.81≤ET1 / d1≤2.

10.

4. The imaging optical lens according to claim 1, wherein: The focal length of the fifth lens is f5, the axial thickness of the fifth lens is d9, and the following relationship is satisfied: 2.00≤f5 / d9≤3.

00.

5. The imaging optical lens according to claim 1, wherein: The object side surface of the first lens is concave at the paraxial position, and the image side surface of the first lens is concave at the paraxial position; The focal length of the camera optical lens is f, the axial thickness of the first lens is d1, and the following relationship is satisfied: -1.49≤f1 / f≤-1.40; 0.40≤(R1+R2) / (R1-R2)≤0.57; 0.101≤d1 / TTL≤0.

118.

6. The imaging optical lens according to claim 1, characterized in that: The object side surface of the second lens is convex at the paraxial position, and the image side surface of the second lens is concave at the paraxial position; The focal length of the second lens is f2, the focal length of the camera optical lens is f, the central curvature radius of the object side of the second lens is R3, the central curvature radius of the image side of the second lens is R4, the axial thickness of the second lens is d3, and the following relationship is satisfied: 4.43≤f2 / f≤5.49; -2.76≤(R3+R4) / (R3-R4)≤-1.39; 0.177≤d3 / TTL≤0.

249.

7. The imaging optical lens according to claim 1, characterized in that: The object side surface of the third lens is convex at the paraxial position, and the image side surface of the third lens is convex at the paraxial position; The focal length of the camera optical lens is f, the central curvature radius of the object side of the third lens is R5, the central curvature radius of the image side of the third lens is R6, the axial thickness of the third lens is d5, and the following relationship is satisfied: 1.60≤f3 / f≤1.71; 0.24≤(R5+R6) / (R5-R6)≤0.38; 0.049≤d5 / TTL≤0.

109.

8. The imaging optical lens according to claim 1, wherein: The object side surface of the fourth lens is convex at the paraxial position, and the image side surface of the fourth lens is concave at the paraxial position; The focal length of the camera optical lens is f, the central curvature radius of the object side of the fourth lens is R7, the central curvature radius of the image side of the fourth lens is R8, the axial thickness of the fourth lens is d7, and the following relationship is satisfied: -3.27≤f4 / f≤-2.57; 2.42≤(R7+R8) / (R7-R8)≤3.00; 0.040≤d7 / TTL≤0.

045.

9. The imaging optical lens according to claim 1, characterized in that: The object side surface of the fifth lens is convex at the paraxial position, and the image side surface of the fifth lens is 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.

10. The imaging optical lens according to claim 1, characterized in that: 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.

Images