Camera lens

Abstract

The present application relates to a kind of camera optical lens, by the first prism, first lens, second lens, third lens, fourth lens and fifth lens sequentially arranged from object side to image side constitute;The maximum focal length of the camera optical lens is fA, back focus is BF, image height is IH, the distance of the most object side lens face to the most image side lens face on optical axis when maximum focusing is Lp, total optical length is TTL, the object side face, image side face curvature radius of first prism is Rp1, Rp2 respectively, the object side face, image side face curvature radius of fifth lens is R9, R10 respectively, and: 6.00≤fA*BF / IH≤13.00;0.40≤Lp / TTL≤0.51;‑4.01≤Rp1 / Rp2≤‑0.80;‑0.80≤(R9+R10) / (R9‑R10)≤‑0.30.The camera optical lens of the present application has the characteristics of long focal length, high magnification, miniaturization.

Description

Technical field

[0001] The present invention relates to the field of optical lenses, and in particular to a camera optical lens. [Background Technology]

[0002] In recent years, with the rise of smartphones, demand for miniaturized camera lenses has been increasing. Advances in semiconductor manufacturing technology have reduced the pixel size of photosensitive devices. Coupled with the current trend of electronic products pursuing high functionality and slim, lightweight designs, miniaturized camera lenses with excellent imaging quality have become mainstream in the market.

[0003] With the development of technology and the increasing diversity of user needs, as the pixel area of ​​photosensitive devices continues to shrink and the system's requirements for imaging quality continue to increase, three-, four-, and even five-element lens structures have gradually appeared in lens design. However, with the development of technology and the increasing diversity of user needs, as the pixel area of ​​photosensitive devices continues to shrink and the system's requirements for imaging quality continue to increase, six-element lens structures have gradually appeared in lens design. Although the common six-element lens has good optical performance, its optical power, lens spacing, and lens shape settings are still somewhat unreasonable. As a result, the lens structure cannot meet the design requirements of long focal length, high magnification, and miniaturization while maintaining good optical performance. [Summary of the invention]

[0004] The technical problem to be solved by the present invention is to provide a camera optical lens that can achieve high imaging performance while meeting the requirements of long focal length, high magnification and miniaturization.

[0005] To solve the above technical problems, the present invention provides a camera optical lens, which is composed of a first prism with positive refractive power, a first lens with negative 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, which are arranged in sequence from the object side to the image side; a reflecting surface is provided between the object side surface and the image side surface of the first prism; the first lens, the second lens, the third lens, the fourth lens, and the fifth lens constitute a lens assembly, and the lens assembly is movable and adjustable along the optical axis of the camera optical lens, so that the camera optical lens switches between a first state and a second state, wherein the focal length of the camera optical lens is maximum in the first state, and the focal length of the camera optical lens is minimum in the second state;

[0006] The focal length of the camera optical lens in the first state is fA, the back focus of the camera optical lens is BF, the image height of the camera optical lens is IH, the distance between the lens surface closest to the object side and the lens surface closest to the image side on the optical axis of the camera optical lens in the first state is Lp, the object side surface curvature radius of the first prism is Rp1, the image side surface curvature radius of the first prism is Rp2, the object side surface curvature radius of the fifth lens is R9, the image side surface curvature radius of the fifth lens is R10, and the total optical length of the camera optical lens is TTL, and the following relationship is satisfied:

[0007] 6.00≤fA*BF / IH≤13.00;

[0008] 0.40≤Lp / TTL≤0.51;

[0009] -4.01≤Rp1 / Rp2≤-0.80;

[0010] -0.80≤(R9+R10) / (R9-R10)≤-0.30.

[0011] Furthermore, the focal lengths of the second lens, the fourth lens, and the fifth lens are f2, f4, and f5, respectively, and satisfy the following relationship:

[0012] 3.00≤(f4-f5) / f2≤4.50.

[0013] Furthermore, the object side surface of the first prism is convex at the near axis, the image side surface of the first prism is convex at the near axis, the focal length of the first prism is fp1, the sum of the on-axis distance from the object side surface of the first prism to the reflecting surface and the on-axis distance from the reflecting surface to the image side surface of the first prism is dp1, and the following relationship is satisfied:

[0014] 0.69≤fp1 / fA≤0.85;

[0015] 0.375≤dp1 / TTL≤0.414.

[0016] Furthermore, the object-side surface of the first lens is convex at the paraxial position, the image-side surface of the first lens is concave at the paraxial position, the focal length of the first lens is f1, the radius of curvature of the object-side surface of the first lens is R1, the radius of curvature of the image-side surface of the first lens is R2, and the on-axis thickness of the first lens is d1, and the following relationship is satisfied:

[0017] -0.64≤f1 / fA≤-0.54;

[0018] 1.03≤(R1+R2) / (R1-R2)≤1.13;

[0019] 0.031≤d1 / TTL≤0.060.

[0020] Furthermore, the object-side surface of the second lens is convex at the paraxial position, the image-side surface of the second lens is convex at the paraxial position, the focal length of the second lens is f2, the radius of curvature of the object-side surface of the second lens is R3, the radius of curvature of the image-side surface of the second lens is R4, and the on-axis thickness of the second lens is d3, and the following relationship is satisfied:

[0021] 0.47≤f2 / fA≤0.58;

[0022] -0.63≤(R3+R4) / (R3-R4)≤-0.22;

[0023] 0.063≤d3 / TTL≤0.089.

[0024] Furthermore, the object-side surface of the third lens is convex at the paraxial position, the object-side surface of the third lens is convex at the paraxial position, the image-side surface of the third lens is concave at the paraxial position, the focal length of the third lens is f3, the radius of curvature of the object-side surface of the third lens is R5, the radius of curvature of the image-side surface of the third lens is R6, and the on-axis thickness of the third lens is d5, and the following relationship is satisfied:

[0025] -1.19≤f3 / fA≤-0.61;

[0026] 1.60≤(R5+R6) / (R5-R6)≤2.41;

[0027] 0.066≤d5 / TTL≤0.088.

[0028] Furthermore, the object-side surface of the fourth lens is concave at the paraxial position, the image-side surface of the fourth lens is convex at the paraxial position, the focal length of the fourth lens is f4, the radius of curvature of the object-side surface of the fourth lens is R7, the radius of curvature of the image-side surface of the fourth lens is R8, and the on-axis thickness of the fourth lens is d7, and the following relationship is satisfied:

[0029] 0.81≤f4 / fA≤1.37;

[0030] 2.88≤(R7+R8) / (R7-R8)≤7.62;

[0031] 0.043≤d7 / TTL≤0.048.

[0032] Furthermore, the object-side surface of the fifth lens is concave at the paraxial position, the image-side surface of the fifth lens is concave at the paraxial position, the focal length of the fifth lens is f5, and the on-axis thickness of the fifth lens is d9, and the following relationship is satisfied:

[0033] -1.28≤f5 / fA≤-0.64;

[0034] 0.063≤d9 / TTL≤0.073.

[0035] Furthermore, the first prism is made of glass.

[0036] The beneficial effects of the present invention are as follows: the camera optical lens according to the present invention can realize an internal focus mode based on the movement of its lens group, has excellent optical performance, and has the characteristics of long focal length, high magnification, and miniaturization.

Brief Description of the Drawings

[0037] Figure 1 1 is a schematic structural diagram of the imaging optical lens 10 in the first state according to the first embodiment of the present invention;

[0038] Figure 2 yes Figure 1 A schematic diagram of magnification chromatic aberration of the camera optical lens 10 is shown;

[0039] Figure 3 yes Figure 1 A schematic diagram of axial aberration of the camera optical lens 10 shown;

[0040] Figure 4 yes Figure 1 Schematic diagram of field curvature and distortion of the camera optical lens 10 shown;

[0041] Figure 5 2 is a schematic structural diagram of the imaging optical lens 20 in the first state according to the second embodiment of the present invention;

[0042] Figure 6 yes Figure 5 Schematic diagram of magnification chromatic aberration of the camera optical lens 20;

[0043] Figure 7 yes Figure 5 Schematic diagram of axial aberration of the camera optical lens 20;

[0044] Figure 8 yes Figure 5 Schematic diagram of field curvature and distortion of the camera optical lens 20;

[0045] Figure 9 3 is a schematic structural diagram of a camera optical lens 30 in a first state according to a third embodiment of the present invention;

[0046] Figure 10 yes Figure 9 Schematic diagram of magnification chromatic aberration of the camera optical lens 30;

[0047] Figure 11 yes Figure 9 A schematic diagram of axial aberration of the camera optical lens 30 shown;

[0048] Figure 12 yes Figure 9 Schematic diagram of field curvature and distortion of the camera optical lens 30;

[0049] Figure 13 4 is a schematic structural diagram of a camera optical lens 40 in a first state according to a fourth embodiment of the present invention;

[0050] Figure 14 yes Figure 13 A schematic diagram of magnification chromatic aberration of the camera optical lens 40 is shown;

[0051] Figure 15 yes Figure 13 A schematic diagram of axial aberration of the camera optical lens 40 is shown;

[0052] Figure 16 yes Figure 13 Schematic diagram of field curvature and distortion of the camera optical lens 40;

[0053] Figure 17 2 is a schematic structural diagram of a camera optical lens 50 in a first state according to a fifth embodiment of the present invention;

[0054] Figure 18 yes Figure 17 Schematic diagram of magnification chromatic aberration of the camera optical lens 50;

[0055] Figure 19 yes Figure 17 A schematic diagram of axial aberration of the camera optical lens 50 shown;

[0056] Figure 20 yes Figure 17 Schematic diagram of field curvature and distortion of the camera optical lens 50 shown;

[0057] Figure 21 1 is a schematic structural diagram of a camera optical lens 60 in a first state according to a sixth embodiment of the present invention;

[0058] Figure 22 yes Figure 21 Schematic diagram of magnification chromatic aberration of the camera optical lens 60;

[0059] Figure 23 yes Figure 21 Schematic diagram of axial aberration of the camera optical lens 60;

[0060] Figure 24 yes Figure 21 Schematic diagram of field curvature and distortion of the camera optical lens 60. [Specific implementation method]

[0061] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0062] The present invention provides a camera optical lens 10-50, which is composed of a first prism P1 with positive refractive power, a first lens L1 with negative refractive power, a second lens L2 with positive refractive power, a third lens L3 with negative refractive power, a fourth lens L4 with positive refractive power, and a fifth lens L5 with negative refractive power, which are arranged in sequence from the object side to the image side; a reflecting surface is provided between the object side surface and the image side surface of the first prism P1;

[0063] The first lens L1, the second lens L2, the third lens L3, the fourth lens L4 and the fifth lens L5 constitute a lens assembly, and the lens assembly is capable of being moved and adjusted along the optical axis of the camera optical lens 10-50, so that the camera optical lens 10-50 can be switched between a first state and a second state, wherein the focal length of the camera optical lens 10-50 is the largest in the first state, and the focal length of the camera optical lens 10-50 is the smallest in the second state.

[0064] The lens assembly is located between the first prism P1 and the image plane SI, and the lens assembly is capable of moving along the optical axis of the camera optical lens 10-50, so that the on-axis distance between the image side surface of the first prism P1 and the object side surface of the lens assembly, as well as the on-axis distance between the image side surface of the lens assembly and the image plane, are adjustable. In this way, the lens assembly is a mobile zoom group. By moving the first lens group, the focal length of the camera optical lens 10-50 can be changed, so that the camera optical lens 10-50 has a good imaging effect in both the first state and the second state. The first state refers to the state in which the focal length of the camera optical lens 10-50 is the largest, and the second state refers to the state in which the focal length of the camera optical lens 10-50 is the smallest. For example, the first state can be a telephoto state or a state in which the object distance is infinite; the second state can be a short focus state or a macro state. In this way, the camera optical lens 10-50 can focus by group movement, realizing a focusing method of focusing within the camera optical lens 10-50.

[0065] The focal length of the imaging optical lens 10-50 in the first state is fA, the back focal length of the imaging optical lens 10-50 is BF, and the image height of the imaging optical lens 10-50 is IH, satisfying the following relationship: 6.00≤fA*BF / IH≤13.00. This specifies the ratio of the product of the focal length and back focal length of the imaging optical lens 10-50 to the image height. An optical system that meets this condition has a longer focal length when the image height is fixed, thereby helping to increase the system magnification.

[0066] In the first state, the distance on the optical axis from the lens surface closest to the object side to the lens surface closest to the image side of the imaging optical lens 10-50 is Lp, and the total optical length of the imaging optical lens 10-50 is TTL, which satisfies the following relationship: 0.40≤Lp / TTL≤0.51. The ratio of the lens group of the imaging optical lens 10-50 to the total optical length is specified, and within the range of the conditional expression, the total optical length of the imaging optical lens 10 system is reduced.

[0067] The object-side curvature radius of the first prism P1 is Rp1, and the image-side curvature radius of the first prism P1 is Rp2, satisfying the following relationship: -4.01 ≤ Rp1 / Rp2 ≤ -0.80. The concave-convex shape of the first prism P1, within the conditional range, helps mitigate light deflection through the lens, effectively reducing aberrations.

[0068] The object-side curvature radius of the fifth lens element L5 is R9, and the image-side curvature radius of the fifth lens element L5 is R10, satisfying the following relationship: -0.80 ≤ (R9 + R10) / (R9 - R10) ≤ -0.30. This shape of the fifth lens element L5, within the range of this conditional expression, helps mitigate light deflection through the lens, effectively minimizing aberrations.

[0069] When the focal length, image height, total optical length of the camera optical lens 10-50, focal length of each lens, axial thickness, and curvature radius of each lens of the camera optical lens 10-50 described in the present invention satisfy the above-mentioned relationship, the camera optical lens 10-50 can meet the design requirements of long focal length, high magnification, and miniaturization.

[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 lengths of the second lens L2, the fourth lens L4, and the fifth lens L5 are defined as f2, f4, and f5, respectively, satisfying the following relationship: 3.00 ≤ (f4 - f5) / f2 ≤ 4.50. This specifies the focal length relationship of the lens assembly of the imaging optical lens. By rationally allocating the focal lengths of the lenses, the optical system achieves superior imaging quality and reduced sensitivity.

[0072] In the present invention, the object side surface of the first prism P1 is convex at the near axis, and the image side surface of the first prism P1 is convex at the near axis. The object side surface and image side surface of the first prism P1 can also be set to other surface distributions.

[0073] The focal length of the first prism P1 is defined as fp1, and the following relationship is satisfied: 0.69 ≤ fp1 / fA ≤ 0.85, which specifies the positive refractive power of the first prism P1. This value range helps reduce aberrations and improve the imaging quality of the camera optical lens 10-50.

[0074] The sum of the on-axis distance from the object side surface to the reflecting surface of the first prism P1 and the on-axis distance from the reflecting surface to the image side surface of the first prism P1 is defined as dp1, which satisfies the following relationship: 0.375≤dp1 / TTL≤0.414, which is conducive to reasonably controlling the total optical length of the camera optical lens.

[0075] In the present invention, the object-side surface of the first lens L1 is convex at the paraxial direction, and the image-side surface of the first lens L1 is concave at the paraxial direction. The object-side surface and the image-side surface of the first lens L1 can also be set to other concave and convex distributions.

[0076] The focal length of the first lens L1 is defined as f1, which satisfies the following relationship: -0.64≤f1 / fA≤-0.54. By controlling the negative power of the first lens L1 within a reasonable range, it is beneficial to correct the aberrations of the optical system.

[0077] The curvature radius of the object side surface of the first lens L1 is defined as R1, and the curvature radius of the image side surface of the first lens L1 is defined as R2, which satisfy the following relationship: 1.03≤(R1+R2) / (R1-R2)≤1.13. This specifies the shape of the first lens L1. When within this range, as the lens develops towards miniaturization, it is beneficial to correct the problem of axial chromatic aberration.

[0078] The axial thickness of the first lens L1 is d1, which satisfies the following relationship: 0.031≤d1 / TTL≤0.060, which is conducive to achieving ultra-thinness.

[0079] In the present invention, the object-side surface of the second lens L2 is convex at the paraxial position, and the image-side surface of the second lens L2 is convex 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.

[0080] The focal length of the second lens L2 is defined as f2, which satisfies the following relationship: 0.47≤f2 / fA≤0.58. Through the reasonable distribution of optical power, the system has better imaging quality and lower sensitivity.

[0081] The radius of curvature of the object-side surface of the second lens L2 is defined as R3, and the radius of curvature of the image-side surface of the second lens L2 is defined as R4, satisfying the following relationship: -0.63 ≤ (R3 + R4) / (R3 - R4) ≤ -0.22. This effectively controls the shape of the second lens L2, facilitates molding of the second lens L2, and avoids molding defects and stress caused by excessive surface curvature of the second lens L2.

[0082] The axial thickness of the second lens L2 is defined as d3, which satisfies the following relationship: 0.063≤d3 / TTL≤0.089, which is conducive to reasonably controlling the total optical length of the camera optical lens.

[0083] In the present invention, the object-side surface of the third lens L3 is convex at the paraxial position, and the image-side surface of the third lens L3 is concave at the paraxial position. The object-side surface and image-side surface of the third lens L3 can also be set to other concave and convex distributions.

[0084] The focal length of the third lens L3 is defined as f3, which satisfies the following relationship: -1.19≤f3 / fA≤-0.61. Through the reasonable distribution of optical power, the system has better imaging quality and lower sensitivity.

[0085] The radius of curvature of the object side surface of the third lens L3 is defined as R5, and the radius of curvature of the image side surface of the third lens L3 is defined as R6, which satisfy the following relationship: 1.60≤(R5+R6) / (R5-R6)≤2.41. This specifies the shape of the third lens L3. When within the range, with the development of miniaturization, it is beneficial to correct aberrations of off-axis angles and other problems.

[0086] The on-axis thickness of the third lens element L3 is defined as d5, which satisfies the following relationship: 0.066≤d5 / TTL≤0.088. This specifies the ratio of the on-axis thickness of the third lens element L3 to the total optical length TTL of the imaging optical lens 10-50, which is conducive to reasonably controlling the total optical length of the imaging optical lens.

[0087] In the present invention, the object-side surface of the fourth lens L4 is concave at the paraxial direction, and the image-side surface of the fourth lens L4 is convex at the paraxial direction. The object-side surface and image-side surface of the fourth lens L4 can also be set to other concave and convex distributions.

[0088] The focal length of the fourth lens L4 is defined as f4, which satisfies the following relationship: 0.81≤f4 / fA≤1.37. The limitation of the fourth lens L4 can effectively make the angle of the light of the camera lens smooth and reduce the tolerance sensitivity.

[0089] The radius of curvature of the object side surface of the fourth lens L4 is defined as R7, and the radius of curvature of the image side surface of the fourth lens L4 is defined as R8, which satisfy the following relationship: 2.88≤(R7+R8) / (R7-R8)≤7.62. This specifies the shape of the fourth lens L4. When within the conditions, as miniaturization progresses, it is beneficial to correct aberrations of off-axis angles and other problems.

[0090] The axial thickness of the fourth lens L4 is defined as d7, which satisfies the following relationship: 0.043≤d7 / TTL≤0.048, which is conducive to reasonably controlling the total optical length of the camera optical lens.

[0091] In the present invention, the object-side surface of the fifth lens L5 is concave at the paraxial position, and the image-side surface of the fifth lens L5 is concave at the paraxial position. The object-side surface and image-side surface of the fifth lens L5 can also be configured with other concave or convex distributions.

[0092] The focal length of the fifth lens L5 is defined as f5, which satisfies the following relationship: -1.28≤f5 / fA≤-0.64. The limitation of the fifth lens L5 can effectively make the angle of the light of the camera lens smooth and reduce the tolerance sensitivity.

[0093] The axial thickness of the fifth lens element L5 is defined as d9, which satisfies the following relationship: 0.063≤d9 / TTL≤0.073, which is conducive to reasonably controlling the total optical length of the camera optical lens.

[0094] In the present invention, the first prism P1 is made of glass; the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 are all made of plastic. In other optional embodiments, the first prism P1 and each lens may also be made of other materials.

[0095] In the present invention, an optical element such as an optical filter GF may be disposed between the fifth lens L5 and the image plane SI, wherein the optical filter GF may be a glass cover or an optical filter.

[0096] In the present invention, an aperture S1 is further provided between the first lens L1 and the second lens L2. The aperture S1 may also be provided at other positions.

[0097] Specific feasible implementation plans are described below.

[0098] The following examples illustrate the imaging optical lens of the present invention. The symbols in each example are as follows: The focal length, on-axis distance, radius of curvature, and on-axis thickness are in units of mm.

[0099] TTL: optical length (the on-axis distance from the object side of the first prism P1 to the image surface SI), in mm;

[0100] BF: back focal length (the on-axis distance from the image side surface of the fifth lens element L5 to the image plane SI), in mm;

[0101] Next, the technical solution of the present invention is described in detail with six embodiments.

[0102] First embodiment

[0103] The first prism P1 has positive refractive power, and its object side surface is convex at the near axis, and its image side surface is convex at the near axis;

[0104] The first lens L1 has negative refractive power, with its object-side surface convex at the paraxial direction and its image-side surface concave at the paraxial direction;

[0105] The second lens L2 has positive refractive power, with its object-side surface convex at the paraxial position and its image-side surface convex at the paraxial position.

[0106] The third lens L3 has negative refractive power, its object-side surface is convex at the paraxial direction, and its image-side surface is concave at the paraxial direction;

[0107] The fourth lens L4 has positive refractive power, its object-side surface is concave at the paraxial direction, and its image-side surface is convex at the paraxial direction.

[0108] The fifth lens L5 has negative refractive power, and its object-side surface is concave at the paraxial position, and its image-side surface is also concave at the paraxial position.

[0109] Table 1 shows design data of the imaging optical lens 10 according to the first embodiment of the present invention.

[0110] Table 1 Design data of camera optical lens 10

[0111]

[0112] Among them, d1 = "dp1-01" + "dp1-02", "dp1-01" = 4.260 mm, "dp1-02" = 4.440 mm.

[0113] Table 2 shows data on relevant optical parameters of the imaging optical lens 10 according to the first embodiment of the present invention in the first state (infinity focus state) and the second state (macro focus state).

[0114] Table 2 Related optical parameters of camera optical lens 10 in different focus states

[0115] First state Second state f 14.500 13.586 FOV 27.33° 26.30° FNO 1.98 1.86 dp2 1.140 1.958 d10 0.899 0.081

[0116] The meanings of the symbols are as follows.

[0117] S1: aperture;

[0118] R: The curvature radius of the optical surface, or the central curvature radius of the lens;

[0119] Rp1: radius of curvature of the object-side surface of the first prism P1;

[0120] Rp2: radius of curvature of the image-side surface of the first prism P1;

[0121] R1: the radius of curvature of the object-side surface of the first lens L1;

[0122] R2: the radius of curvature of the image-side surface of the first lens L1;

[0123] R3: radius of curvature of the object-side surface of the second lens L2;

[0124] R4: the radius of curvature of the image-side surface of the second lens L2;

[0125] R5: radius of curvature of the object-side surface of the third lens L3;

[0126] R6: radius of curvature of the image-side surface of the third lens L3;

[0127] R7: radius of curvature of the object-side surface of the fourth lens L4;

[0128] R8: radius of curvature of the image-side surface of the fourth lens L4;

[0129] R9: radius of curvature of the object-side surface of the fifth lens element L5;

[0130] R10: radius of curvature of the image-side surface of the fifth lens L5;

[0131] R11: radius of curvature of the object side of the optical filter GF;

[0132] R12: radius of curvature of the image side of the optical filter GF;

[0133] d: the on-axis thickness of the lens and the on-axis distance between lenses;

[0134] d0: the on-axis distance from the aperture S1 to the object-side surface of the first prism P1;

[0135] dp1: the sum of the on-axis distance from the object-side surface of the first prism P1 to the reflecting surface and the on-axis distance from the reflecting surface to the image-side surface of the first prism P1;

[0136] dp1-01: the on-axis distance from the object side of the first prism P1 to the reflecting surface;

[0137] dp1-02: the on-axis distance from the reflecting surface of the first prism P1 to the image side surface;

[0138] dp2: the on-axis distance from the image-side surface of the first prism P1 to the object-side surface of the first lens L1;

[0139] d1: axial thickness of the first lens L1;

[0140] d2: the on-axis distance from the image-side surface of the first lens L1 to the object-side surface of the second lens L2;

[0141] d3: axial thickness of the second lens L2;

[0142] d4: the on-axis distance from the image-side surface of the second lens L2 to the object-side surface of the third lens L3;

[0143] d5: axial thickness of the third lens L3;

[0144] d6: the on-axis distance from the image-side surface of the third lens L3 to the object-side surface of the fourth lens L4;

[0145] d7: axial thickness of the fourth lens L4;

[0146] d8: the on-axis distance from the image-side surface of the fourth lens L4 to the object-side surface of the fifth lens L5;

[0147] d9: axial thickness of the fifth lens L5;

[0148] d10: the on-axis distance between the image-side surface of the fifth lens L5 and the object-side surface of the optical filter GF;

[0149] d11: axial thickness of the optical filter GF;

[0150] d12: the axial distance from the image side of the optical filter GF to the image plane SI;

[0151] nd: refractive index of d-line;

[0152] nd1: refractive index of the d-line of the first prism P1;

[0153] nd2: the refractive index of the first lens L1 at the d-line;

[0154] nd3: the refractive index of the second lens L2 at the d-line;

[0155] nd4: refractive index of the third lens L3 at the d-line;

[0156] nd5: the refractive index of the fourth lens L4 at the d-line;

[0157] nd6: the refractive index of the fifth lens L5 at the d-line;

[0158] ndg: refractive index of the d-line of the optical filter GF;

[0159] vd: Abbe number;

[0160] vd1: Abbe number of the first prism P1;

[0161] vd2: Abbe number of the first lens L1;

[0162] vd3: Abbe number of the second lens L2;

[0163] vd4: Abbe number of the third lens L3;

[0164] vd5: Abbe number of the fourth lens L4;

[0165] vd6: Abbe number of the fifth lens L5;

[0166] vdg: Abbe number of the optical filter GF.

[0167] Table 3 shows aspherical surface data of each lens in the imaging optical lens 10 according to the first embodiment of the present invention.

[0168] Table 3 Aspherical surface data of camera optical lens 10

[0169]

[0170]

[0171] For convenience, the aspheric surface of each lens surface uses the aspheric surface shown in the following formula (1). However, the embodiment of the present invention is not limited to the aspheric surface polynomial form represented by the formula (1).

[0172] 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 +A

[0173] 16r 16 +A18r 18 +A20r 20 (1)

[0174] Where k is the cone coefficient, A4, A6, A8, A10, A12, A14, A16, A18, and A20 are aspheric coefficients, c is the curvature at the center of the optical surface, r is the perpendicular distance between a point on the aspheric curve and the optical axis, and z is the aspheric depth (the perpendicular distance between a point on the aspheric surface at a distance r from the optical axis and the tangent plane tangent to the vertex on the aspheric optical axis).

[0175] Figure 2 、 Figure 3Schematic diagrams respectively show the chromatic aberration of magnification and the axial aberration of light with wavelengths of 650.0 nm, 610.0 nm, 555.0 nm, 510.0 nm, 470.0 nm, and 430.0 nm after passing through the imaging optical lens 10 of the first embodiment. Figure 4 FIG1 shows a schematic diagram of field curvature and distortion of light with a wavelength of 555.0 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.

[0176] Table 19 that follows shows the values ​​corresponding to the various numerical values ​​in Examples 1, 2, 3, 4, 5, and 6 and the parameters specified in the conditional expressions.

[0177] As shown in Table 19, the first embodiment satisfies each conditional expression.

[0178] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 10 is 7.311 mm, the full field of view image height IH is 3.594 mm, and the diagonal field of view FOV is 27.33°, which meets the requirements of long focal length, high magnification, and miniaturization, and has excellent optical characteristics.

[0179] Second embodiment

[0180] The second embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as that of the first embodiment. The structural form of the camera optical lens 20 of the second embodiment is shown in FIG. Figure 5 As shown, only the differences are listed below.

[0181] Table 4 shows design data of the imaging optical lens 20 according to the second embodiment of the present invention.

[0182] Table 4 Design data of camera optical lens 20

[0183]

[0184]

[0185] Among them, d1 = "dp1-01" + "dp1-02", "dp1-01" = 4.130 mm, "dp1-02" = 4.570 mm.

[0186] Table 5 shows data on relevant optical parameters of the imaging optical lens 20 according to the second embodiment of the present invention in the first state (infinity focus state) and the second state (macro focus state).

[0187] Table 5 Related optical parameters of the camera optical lens 20 in different focus states

[0188] First state Second state f 14.376 13.423 FOV 27.67° 26.91° FNO 1.98 1.85 dp2 1.173 1.970 d10 0.888 0.091

[0189] Table 6 shows aspherical surface data of each lens in the imaging optical lens 20 according to the second embodiment of the present invention.

[0190] Table 6 Aspherical surface data of camera optical lens 20

[0191]

[0192]

[0193] Figure 6 、 Figure 7 Schematic diagrams respectively show the chromatic aberration of magnification and the axial aberration of light with wavelengths of 650.0 nm, 610.0 nm, 555.0 nm, 510.0 nm, 470.0 nm, and 430.0 nm after passing through the imaging optical lens 20 of the second embodiment. Figure 8 FIG1 shows a schematic diagram of field curvature and distortion of light with a wavelength of 555.0 nm after passing through the camera optical lens 20 of the second embodiment. Figure 8 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0194] As shown in Table 19, the second embodiment satisfies each conditional expression.

[0195] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 20 is 7.249 mm, the full field of view image height IH is 3.594 mm, and the diagonal field of view angle FOV is 27.67°, which meets the requirements of long focal length, high magnification, and miniaturization, and has excellent optical characteristics.

[0196] Third embodiment

[0197] The third embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as the first embodiment. The structure of the camera optical lens 30 of the third embodiment is shown in FIG. Figure 9 As shown, only the differences are listed below.

[0198] Table 9 shows design data of the imaging optical lens 30 according to the third embodiment of the present invention.

[0199] Table 9 Design data of camera optical lens 30

[0200]

[0201] Among them, d1 = "dp1-01" + "dp1-02", "dp1-01" = 4.195mm, "dp1-02" = 4.505mm.

[0202] Table 8 shows data on relevant optical parameters of the imaging optical lens 30 according to the third embodiment of the present invention in the first state (infinity focus state) and the second state (macro focus state).

[0203] Table 8 Related optical parameters of camera optical lens 30 in different focus states

[0204] First state Second state f 14.267 13.340 FOV 27.87° 26.81° FNO 1.97 1.84 dp2 1.160 1.933 d10 0.889 0.116

[0205] Table 9 shows aspherical surface data of each lens in the imaging optical lens 30 according to the third embodiment of the present invention.

[0206] Table 9 Aspherical surface data of camera optical lens 30

[0207]

[0208]

[0209] Figure 10 、 Figure 11 Schematic diagrams respectively show the chromatic aberration of magnification and the axial aberration of light with wavelengths of 650.0 nm, 610.0 nm, 555.0 nm, 510.0 nm, 470.0 nm, and 430.0 nm after passing through the imaging optical lens 30 of the third embodiment. Figure 12 FIG1 shows a schematic diagram of field curvature and distortion of light with a wavelength of 555.0 nm after passing through the camera optical lens 30 of the third embodiment. Figure 12 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0210] As shown in Table 19, the third embodiment satisfies each conditional expression.

[0211] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 30 is 7.249 mm, the full field of view image height IH is 3.594 mm, and the diagonal field of view angle FOV is 27.87°, which meets the requirements of long focal length, high magnification, and miniaturization, and has excellent optical characteristics.

[0212] Fourth embodiment

[0213] The fourth embodiment is substantially the same as the first embodiment, and the meanings of the symbols are the same as those of the first embodiment. The structure of the camera optical lens 40 of the fourth embodiment is shown in FIG. Figure 13 As shown, only the differences are listed below.

[0214] Table 10 shows design data of the imaging optical lens 40 according to the fourth embodiment of the present invention.

[0215] Table 10 Design data of camera optical lens 40

[0216]

[0217] Among them, d1 = "dp1-01" + "dp1-02", "dp1-01" = 4.260 mm, "dp1-02" = 4.440 mm.

[0218] Table 11 shows data on relevant optical parameters of the imaging optical lens 40 according to the fourth embodiment of the present invention in the first state (infinity focus state) and the second state (macro focus state).

[0219] Table 11 Relevant optical parameters of the camera optical lens 40 in different focus states

[0220]

[0221]

[0222] Table 12 shows aspherical surface data of each lens in the imaging optical lens 40 according to the fourth embodiment of the present invention.

[0223] Table 12 Aspheric surface data of camera optical lens 40

[0224]

[0225]

[0226] Figure 14 、 Figure 15 Schematic diagrams respectively show the chromatic aberration of magnification and the axial aberration of light with wavelengths of 650.0 nm, 610.0 nm, 555.0 nm, 510.0 nm, 470.0 nm, and 430.0 nm after passing through the imaging optical lens 40 of the fourth embodiment. Figure 16 FIG. 4 shows a schematic diagram of field curvature and distortion of light having a wavelength of 555.0 nm after passing through the camera optical lens 40 of the fourth embodiment. Figure 16 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0227] As shown in Table 19, the fourth embodiment satisfies each conditional expression.

[0228] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 40 is 7.249 mm, the full field of view image height IH is 3.594 mm, and the field of view angle FOV in the diagonal direction is 27.55°, which meets the requirements of long focal length, high magnification, and miniaturization, and has excellent optical characteristics.

[0229] Fifth embodiment

[0230] The fifth embodiment is substantially the same as the first embodiment, and the meanings of the symbols are the same as those of the first embodiment. For the structural form of the camera optical lens 50 of the fifth embodiment, please refer to Figure 17 As shown, only the differences are listed below.

[0231] Table 13 shows design data of the imaging optical lens 50 according to the fifth embodiment of the present invention.

[0232] Table 13 Design data of camera optical lens 50

[0233]

[0234] Among them, d1 = "dp1-01" + "dp1-02", "dp1-01" = 4.180 mm, "dp1-02" = 4.520 mm.

[0235] Table 14 shows data on relevant optical parameters of the imaging optical lens 50 according to the fifth embodiment of the present invention in the first state (infinity focus state) and the second state (macro focus state).

[0236] Table 14: Optical parameters of camera optical lens 50 in different focus states

[0237] First state Second state f 14.376 13.405 FOV 27.56° 26.65° FNO 1.98 1.85 dp2 1.158 1.970 d10 0.908 0.096

[0238] Table 15 shows aspherical surface data of each lens in the imaging optical lens 50 according to the fifth embodiment of the present invention.

[0239] Table 15 Aspheric surface data of camera optical lens 50

[0240]

[0241]

[0242] Figure 18 、 Figure 19 Schematic diagrams respectively show the chromatic aberration of magnification and the axial aberration of light with wavelengths of 650.0 nm, 610.0 nm, 555.0 nm, 510.0 nm, 470.0 nm, and 430.0 nm after passing through the imaging optical lens 50 of the fifth embodiment. Figure 20 FIG1 shows a schematic diagram of field curvature and distortion of light with a wavelength of 555.0 nm after passing through the camera optical lens 50 of the fifth embodiment. Figure 20 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0243] As shown in Table 19, the fifth embodiment satisfies each conditional expression.

[0244] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 50 is 7.252 mm, the full field of view image height IH is 3.594 mm, and the field of view angle FOV in the diagonal direction is 27.56°, which meets the requirements of long focal length, high magnification, and miniaturization, and has excellent optical characteristics.

[0245] Sixth embodiment

[0246] The sixth embodiment is substantially the same as the first embodiment, and the meanings of the symbols are the same as those of the first embodiment. For the structural form of the camera optical lens 60 of the fifth embodiment, please refer to Figure 21 As shown, only the differences are listed below.

[0247] Table 16 shows design data of the imaging optical lens 60 according to the sixth embodiment of the present invention.

[0248] Table 16 Design data of camera optical lens 60

[0249]

[0250]

[0251] Among them, d1 = "dp1-01" + "dp1-02", "dp1-01" = 4.445 mm, "dp1-02" = 4.255 mm.

[0252] Table 17 shows data on relevant optical parameters of the imaging optical lens 60 according to the sixth embodiment of the present invention in the first state (infinity focus state) and the second state (macro focus state).

[0253] Table 17 Optical parameters of camera optical lens 60 in different focus states

[0254] First state Second state f 14.383 13.953 FOV 27.55° 26.83° FNO 1.98 1.92 dp2 1.000 1.983 d10 1.075 0.092

[0255] Table 18 shows aspherical surface data of each lens in the imaging optical lens 60 according to the sixth embodiment of the present invention.

[0256] Table 18 Aspherical surface data of camera optical lens 60

[0257]

[0258]

[0259]

[0260] Figure 22 、 Figure 23Schematic diagrams respectively show the chromatic aberration of magnification and the axial aberration of light with wavelengths of 650.0 nm, 610.0 nm, 555.0 nm, 510.0 nm, 470.0 nm, and 430.0 nm after passing through the imaging optical lens 60 of the sixth embodiment. Figure 24 FIG1 shows a schematic diagram of field curvature and distortion of light having a wavelength of 555.0 nm after passing through the camera optical lens 60 of the sixth embodiment. Figure 24 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0261] As shown in Table 19, the sixth embodiment satisfies each conditional expression.

[0262] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 60 is 7.252 mm, the full field of view image height IH is 3.594 mm, and the diagonal field of view angle FOV is 27.55°, which meets the requirements of long focal length, high magnification, and miniaturization, and has excellent optical characteristics.

[0263] Table 19 Various numerical values ​​in each embodiment and the corresponding values ​​of the parameters specified in the conditional formula

[0264]

[0265]

[0266] Those skilled in the art will appreciate that the above embodiments are specific embodiments for implementing the present invention, and that in actual applications, various changes may be made in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A camera optical lens, characterized in that: The camera optical lens is composed of a first prism with positive refractive power, a first lens with negative 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, which are arranged in sequence from the object side to the image side; the object side surface of the first prism is convex at the paraxial position, the image side surface of the first prism is convex at the paraxial position, the object side surface of the first lens is convex at the paraxial position, the image side surface of the first lens is concave at the paraxial position, the object side surface of the second lens is convex at the paraxial position, the image side surface of the second lens is convex at the paraxial position, the object side surface of the third lens is convex at the paraxial position, and the image side surface of the third lens is concave at the paraxial position. , the object side surface of the fourth lens is concave at the paraxial position, the image side surface of the fourth lens is convex at the paraxial position, the object side surface of the fifth lens is concave at the paraxial position, and the image side surface of the fifth lens is concave at the paraxial position; a reflecting surface is provided between the object side surface and the image side surface of the first prism; the first lens, the second lens, the third lens, the fourth lens and the fifth lens constitute a lens assembly, and the lens assembly is capable of being moved and adjusted along the optical axis of the camera optical lens, so that the camera optical lens is switched between a first state and a second state, wherein the focal length of the camera optical lens is the largest in the first state, and the focal length of the camera optical lens is the smallest in the second state; The focal length of the camera optical lens in the first state is fA, the back focus of the camera optical lens is BF, the image height of the camera optical lens is IH, the distance between the lens surface closest to the object side and the lens surface closest to the image side on the optical axis of the camera optical lens in the first state is Lp, the object side surface curvature radius of the first prism is Rp1, the image side surface curvature radius of the first prism is Rp2, the object side surface curvature radius of the fifth lens is R9, the image side surface curvature radius of the fifth lens is R10, and the total optical length of the camera optical lens is TTL, and the following relationship is satisfied: 6.00 ≤ fA*BF / IH ≤ 13.00; 0.40 ≤ Lp / TTL ≤ 0.51; -4.01 ≤ Rp1 / Rp2 ≤ -0.80; -0.80 ≤ (R9+R10) / (R9-R10) ≤ -0.

30.

2. The imaging optical lens according to claim 1, wherein: The focal lengths of the second lens, the fourth lens, and the fifth lens are f2, f4, and f5, respectively, and satisfy the following relationship: 3.00 ≤ (f4-f5) / f2 ≤ 4.

50.

3. The imaging optical lens according to claim 1, wherein: The focal length of the first prism is fp1, the sum of the on-axis distance from the object side surface of the first prism to the reflecting surface and the on-axis distance from the reflecting surface to the image side surface of the first prism is dp1, and the following relationship is satisfied: 0.69 ≤ fp1 / fA ≤ 0.85; 0.375≤ dp1 / TTL ≤ 0.

414.

4. The imaging optical lens according to claim 1, wherein: The focal length of the first lens is f1, the radius of curvature of the object side surface of the first lens is R1, the radius of curvature of the image side surface of the first lens is R2, and the axial thickness of the first lens is d1, and the following relationship is satisfied: -0.64 ≤ f1 / fA ≤ -0.54; 1.03 ≤ (R1+R2) / (R1-R2) ≤ 1.13; 0.031 ≤ d1 / TTL ≤ 0.

060.

5. The imaging optical lens according to claim 1, wherein: The focal length of the second lens is f2, the radius of curvature of the object side surface of the second lens is R3, the radius of curvature of the image side surface of the second lens is R4, and the axial thickness of the second lens is d3, and the following relationship is satisfied: 0.47 ≤ f2 / fA ≤ 0.58; -0.63 ≤ (R3+R4) / (R3-R4) ≤ -0.22; 0.063 ≤ d3 / TTL ≤ 0.

089.

6. The imaging optical lens according to claim 1, wherein: The focal length of the third lens is f3, the radius of curvature of the object side of the third lens is R5, the radius of curvature of the image side of the third lens is R6, and the axial thickness of the third lens is d5, and the following relationship is satisfied: -1.19 ≤ f3 / fA ≤ -0.61; 1.60 ≤ (R5+R6) / (R5-R6) ≤ 2.41; 0.066 ≤ d5 / TTL ≤ 0.

088.

7. The imaging optical lens according to claim 1, wherein: The focal length of the fourth lens is f4, the radius of curvature of the object side surface of the fourth lens is R7, the radius of curvature of the image side surface of the fourth lens is R8, and the axial thickness of the fourth lens is d7, and the following relationship is satisfied: 0.81 ≤ f4 / fA ≤ 1.37; 2.88 ≤ (R7+R8) / (R7-R8) ≤ 7.62; 0.043 ≤ d7 / TTL ≤ 0.

048.

8. The imaging optical lens according to claim 1, wherein: The focal length of the fifth lens is f5, and the axial thickness of the fifth lens is d9, and the following relationship is satisfied: -1.28 ≤ f5 / fA ≤ -0.64; 0.063 ≤ d9 / TTL ≤ 0.

073.

9. The imaging optical lens according to claim 1, wherein: The first prism is made of glass.

Images