Camera lens

Abstract

The application relates to a camera optical lens which is composed of a first prism, a first lens, a second lens, a third lens, a fourth lens and a fifth lens arranged in sequence from the object side to the image side; the maximum focal length of the camera optical lens is fA, the image height is IH, the distance between the most object-side lens surface and the most image-side lens surface on the optical axis at the maximum focusing time is Lp, the radii of curvature of the object and image sides of the first prism are Rp1 and Rp2, the radii of curvature of the object and image sides of the fifth lens are R9 and R10, the total optical length is TTL, 1.90 <= fA*IH / TTL <= 2.20; 0.25 <= Lp / TTL <= 0.41; 0.00 <= Rp1 / Rp2 <= 1.11; 3.00 <= (R9+R10) / (R9-R10) <= 30.20. The camera optical lens has the characteristics of long focal length, high magnification and miniaturization.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical lens, in particular to a camera optical lens.

BACKGROUND

[0002] In recent years, with the rise of smart phones, the demand for small-sized camera lenses is increasing. Due to the advancement of semiconductor manufacturing technology, the pixel size of photosensitive devices is reduced. In addition, electronic products today tend to be light and thin with good functionality, so small-sized camera lenses with good imaging quality have become the mainstream in the market.

[0003] With the development of technology and the increasing of user's diversified needs, the pixel area of photosensitive devices is continuously reduced, and the system's requirement for imaging quality is continuously improved. Three-piece, four-piece, and even five-piece lens structures gradually appear in lens design. However, with the development of technology and the increasing of user's diversified needs, the pixel area of photosensitive devices is continuously reduced, and the system's requirement for imaging quality is continuously improved. Six-piece lens structures gradually appear in lens design. Although the common six-piece lens has good optical performance, the optical power, lens spacing, and lens shape settings are still not reasonable, resulting in that the lens structure cannot meet the design requirements of long focal length, high magnification, and small size while having good optical performance.

SUMMARY

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

[0005] To solve the above technical problems, the present application 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, arranged in order from the object side to the image side; a reflecting surface is provided between the object side and the image side of the first prism; the first lens, the second lens, the third lens, the fourth lens, and the fifth lens constitute a lens assembly, which is arranged to be movable along the optical axis of the camera optical lens for adjustment, so that the camera optical lens switches between a first state and a second state, wherein the focal length of the camera optical lens in the first state is the largest, and the focal length of the camera optical lens in the second state is the smallest.

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

[0007] 1.90≤fA*IH / TTL≤2.20;

[0008] 0.25≤Lp / TTL≤0.41;

[0009] 0.00≤Rp1 / Rp2≤1.11;

[0010] 3.00≤(R9+R10) / (R9-R10)≤30.20.

[0011] Furthermore, the on-axis thicknesses of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens are d1, d3, d5, d7, and d9, respectively, and satisfy the following relationship:

[0012] 2.40≤(d1+d3+d5) / (d7+d9)≤3.00.

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

[0014] 3.22≤fp1 / fA≤7.98;

[0015] 0.322≤dp1 / TTL≤0.363.

[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 axial thickness of the first lens is d1, satisfying the following relationship:

[0017] -0.80≤f1 / fA≤-0.57;

[0018] 2.83≤(R1+R2) / (R1-R2)≤3.48;

[0019] 0.029≤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 axial thickness of the second lens is d3, satisfying the following relationship:

[0021] 0.34≤f2 / fA≤0.41;

[0022] -0.96≤(R3+R4) / (R3-R4)≤-0.67;

[0023] 0.067≤d3 / TTL≤0.084.

[0024] Furthermore, 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 axial thickness of the third lens is d5, and the following relationship is satisfied:

[0025] -15.12≤f3 / fA≤-0.86;

[0026] -1.74≤(R5+R6) / (R5-R6)≤2.02;

[0027] 0.048≤d5 / TTL≤0.078.

[0028] Furthermore, the object-side surface of the fourth lens is convex at the paraxial position, the image-side surface of the fourth lens is concave 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 axial thickness of the fourth lens is d7, satisfying the following relationship:

[0029] 1.09≤f4 / fA≤2.50;

[0030] -10.76≤(R7+R8) / (R7-R8)≤-2.02;

[0031] 0.037≤d7 / TTL≤0.042.

[0032] Furthermore, the object-side surface of the fifth lens is convex at the paraxial position, and the image-side surface of the fifth lens is concave at the paraxial position. The focal length of the fifth lens is f5, the radius of curvature of the object-side surface of the fifth lens is R9, the radius of curvature of the image-side surface of the fifth lens is R10, and the axial thickness of the fifth lens is d9, satisfying the following relationship:

[0033] -8.59≤f5 / fA≤494.45;

[0034] 0.027≤d9 / TTL≤0.051.

[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 achieve internal focusing based on the movement of its lens group, has excellent optical performance, and has the characteristics of long focal length, high magnification and miniaturization. [Attached Image Description]

[0037] Figure 1 This is a schematic diagram of the camera 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 chromatic aberration at magnification for the camera optical lens 10 shown;

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

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

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

[0042] Figure 6 yes Figure 5 A schematic diagram of chromatic aberration at magnification for the camera optical lens 20 shown;

[0043] Figure 7 yes Figure 5 A schematic diagram of axial aberrations of the camera optical lens 20 shown;

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

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

[0046] Figure 10 yes Figure 9 A schematic diagram of chromatic aberration at magnification for the camera optical lens 30 shown;

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

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

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

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

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

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

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

[0054] Figure 18 yes Figure 17 A schematic diagram of chromatic aberration at magnification for the camera optical lens 50 shown;

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

[0056] Figure 20 yes Figure 17 A schematic diagram of the field curvature and distortion of the camera optical lens 50 shown.

Detailed Implementation Methods

[0057] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0058] This invention provides a camera optical lens 10-50. The camera optical lens 10-50 comprises, in sequence from the object side to the image side, a first prism P1 with positive refractive power, a first lens L1 with negative refractive power, an aperture S1, 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; a reflective surface is provided between the object side and the image side of the first prism P1.

[0059] 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. The lens assembly is adjustable and movable along the optical axis of the camera optical lens 10-50, allowing the camera optical lens 10-50 to switch between a first state and a second state. The camera optical lens 10-50 has the largest focal length in the first state and the smallest focal length in the second state.

[0060] The lens assembly is located between the first prism P1 and the image plane SI, and the lens assembly can move along the optical axis of the imaging optical lens 10-50, making the axial distance between the image side of the first prism P1 and the object side of the lens assembly, as well as the axial distance between the image side of the lens assembly and the image plane, adjustable. This lens assembly is a movable zoom group; by moving the first lens group, the focal length of the imaging optical lens 10-50 can be changed, resulting in good imaging performance in both the first and second states. The first state refers to the state with the maximum focal length of the imaging optical lens 10-50, and the second state refers to the state with the minimum focal length. For example, the first state can be a telephoto state or a state with an infinity object distance; the second state can be a short focal length state or a macro state. Thus, the imaging optical lens 10-50 can achieve in-lens focusing by moving the group to focus.

[0061] The focal length of the camera optical lens 10-50 in the first state is fA, the image height is IH, and the total optical length is TTL, satisfying the following relationship: 1.90 ≤ fA*IH / TTL ≤ 2.20. This specifies the ratio of the product of the focal length and image height of the optical system of the camera optical lens 10-50 to the total optical length. An optical system satisfying this relationship has a longer focal length with a fixed image height, which helps to improve the system magnification.

[0062] The distance on the optical axis between the lens surface closest to the object side and the lens surface closest to the image side of the imaging optical lens 10-50 in the first state is defined as Lp, satisfying the following relationship: 0.25≤Lp / TTL≤0.41. This specifies the ratio of the lens group to the total length of the imaging optical lens 10-50, which, within the range of the condition, helps to compress the total optical length of the imaging optical lens 10-50.

[0063] The object-side radius of curvature of the first prism P1 is defined as Rp1, and the image-side radius of curvature of the first prism P1 is defined as Rp2, satisfying the following relationship: 0.00≤Rp1 / Rp2≤1.11. The concave-convex shape of the first prism P1 is specified, which, within the range of the condition, helps to mitigate the degree of light refraction after passing through the lens and can effectively reduce aberrations.

[0064] The object-side radius of curvature of the fifth lens L5 is defined as R9, and the image-side radius of curvature of the fifth lens L5 is defined as R10, satisfying the following relationship: 3.00≤(R9+R10) / (R9-R10)≤30.20. This defines the shape of the fifth lens L5, which, within the given condition, helps to mitigate the degree of light refraction after passing through the lens and effectively reduces aberrations.

[0065] When the focal length, image height, total optical length, focal length, on-axis thickness, and radius of curvature of each lens of the camera optical lens 10-50 described in this 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.

[0066] Based on the above conditional expressions and the functions that can be achieved, the characteristics of each lens are further refined as follows.

[0067] The on-axis thicknesses of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 are defined as d1, d3, d5, d7, and d9, respectively, satisfying the following relationship: 2.40 ≤ (d1 + d3 + d5) / (d7 + d9) ≤ 3.00. This specifies the thickness relationship of the lens groups in the imaging optical lens 10-50. By rationally allocating the thickness between the lenses, it is beneficial to reduce the assembly difficulty in the actual production process and improve the yield rate.

[0068] In this invention, the object-side surface of the first prism P1 is convex near the axis, and the image-side surface of the first prism P1 is concave or flat near the axis. The object-side surface and image-side surface of the first prism P1 can also be configured with other surface distributions.

[0069] The focal length of the first prism P1 is defined as fp1, satisfying the following relationship: 3.22≤fp1 / fA≤7.98, which specifies the positive refractive power of the first prism P1. Within this value range, it helps to reduce aberrations and improve the imaging quality of the camera lens 10-50.

[0070] The sum of the axial distance from the object side to the reflecting surface of the first prism P1 and the axial distance from the reflecting surface to the image side of the first prism is defined as dp1, which satisfies the following relationship: 0.322≤dp1 / TTL≤0.363, which is beneficial for reasonably controlling the total optical length of the camera lens.

[0071] In this invention, the object-side surface of the first lens L1 is convex near the axis, and the image-side surface of the first lens L1 is concave near the axis. The object-side surface and image-side surface of the first lens L1 can also be configured with other concave and convex distributions.

[0072] The focal length of the first lens L1 is defined as f1, which satisfies the following relationship: -0.80≤f1 / fA≤-0.57. By controlling the negative optical power of the first lens L1 within a reasonable range, it is beneficial to correct the aberrations of the optical system.

[0073] The radius of curvature of the object side of the first lens L1 is defined as R1, and the radius of curvature of the image side of the first lens L1 is defined as R2, which satisfies the following relationship: 2.83≤(R1+R2) / (R1-R2)≤3.48. This defines the shape of the first lens L1. When it is within the range, as lenses develop towards miniaturization, it is beneficial to correct on-axis chromatic aberration.

[0074] The on-axis thickness of the first lens L1 is defined as d1, which satisfies the following relationship: 0.029≤d1 / TTL≤0.060, which is beneficial for reasonably controlling the total optical length of the camera lens.

[0075] In this invention, the object-side surface of the second lens L2 is convex near the axis, and the image-side surface of the second lens L2 is also convex near the axis. The object-side and image-side surfaces of the second lens L2 can also be configured with other concave and convex distributions.

[0076] The focal length L2 of the first lens is defined as f2, which satisfies the following relationship: 0.34≤f2 / fA≤0.41. Through the reasonable allocation of optical power, the system has better imaging quality and lower sensitivity.

[0077] The radius of curvature of the object side of the second lens L2 is defined as R3, and the radius of curvature of the image side of the second lens L2 is defined as R4. The following relationship is satisfied: -0.96≤(R3+R4) / (R3-R4)≤-0.67. This can effectively control the shape of the second lens L2, which is beneficial to the forming of the second lens L2 and avoids poor forming and stress caused by excessive surface curvature of the second lens L2.

[0078] The on-axis thickness of the second lens L2 is defined as d3, which satisfies the following relationship: 0.067≤d3 / TTL≤0.084, which is beneficial for reasonably controlling the total optical length of the camera lens.

[0079] In this invention, the object-side surface of the third lens L3 is concave near the axis, and the image-side surface of the third lens L3 is also concave near the axis. The object-side and image-side surfaces of the third lens L3 can also be configured with other concave or convex distributions.

[0080] The focal length of the third lens L3 is defined as f3, which satisfies the following relationship: -15.12≤f3 / fA≤-0.86. Through the reasonable allocation of optical power, the system has better imaging quality and lower sensitivity.

[0081] The radius of curvature of the object side of the third lens L3 is defined as R5, and the radius of curvature of the image side of the third lens L3 is defined as R6, satisfying the following relationship: -1.74≤(R5+R6) / (R5-R6)≤2.02. This specifies the shape of the third lens L3. When it is within this range, with the development of miniaturization, it is beneficial to correct aberrations and other problems in off-axis drawing angles.

[0082] The on-axis thickness of the third lens L3 is defined as d5, satisfying the following relationship: 0.048≤d5 / TTL≤0.078. This specifies the ratio of the on-axis thickness of the third lens L3 to the total optical length TTL of the 10-50 camera lens, which is beneficial for the reasonable control of the total optical length of the camera lens.

[0083] In this invention, the object-side surface of the fourth lens L4 is convex near the axis, and the image-side surface of the fourth lens L4 is concave near the axis. The object-side and image-side surfaces of the fourth lens L4 can also be configured with other concave / convex distributions.

[0084] The focal length of the fourth lens L4 is defined as f4, satisfying the following relationship: 1.09≤f4 / fA≤2.50. The limitation of the fourth lens L4 can effectively make the light angle of the camera lens smoother and reduce tolerance sensitivity.

[0085] The curvature radius R7 of the object side of the fourth lens L4 and the curvature radius R8 of the image side of the fourth lens L4 are defined to satisfy the following relationship: -10.76≤(R7+R8) / (R7-R8)≤-2.02. This specifies the shape of the fourth lens L4. Within the specified range, with the development of miniaturization, it is beneficial to correct aberrations and other problems in off-axis drawing angles.

[0086] The on-axis thickness of the fourth lens L4 is defined as d7, which satisfies the following relationship: 0.037≤d7 / TTL≤0.042, which is beneficial for reasonably controlling the total optical length of the camera lens.

[0087] In this invention, the fifth lens L5 has positive or negative refractive power. The object-side surface of the fifth lens L5 is convex near the axis, and the image-side surface of the fifth lens L5 is concave near the axis. The object-side and image-side surfaces of the fifth lens L5 can also be configured with other concave and convex distributions.

[0088] The focal length of the fifth lens L5 is defined as f5, satisfying the following relationship: -8.59≤f5 / fA≤494.45. The limitation of the fifth lens L5 can effectively make the light angle of the camera lens smoother and reduce tolerance sensitivity.

[0089] The on-axis thickness of the fifth lens L5 is defined as d9, which satisfies the following relationship: 0.027≤d9 / TTL≤0.051, which is beneficial for reasonably controlling the total optical length of the camera lens.

[0090] In this 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 can also be made of other materials.

[0091] In this invention, an optical element such as an optical filter GF can be disposed between the fifth lens L5 and the image plane SI. The optical filter GF can be a glass cover plate or an optical filter.

[0092] In this invention, an aperture S1 is also provided between the first lens L1 and the second lens L2. The aperture S1 can also be provided in other positions.

[0093] Specific feasible implementation plans are described below.

[0094] The camera optical lens of the present invention will be described below with examples. The symbols described in each example are as follows. The units for focal length, on-axis distance, radius of curvature, and on-axis thickness are mm.

[0095] TTL: Total optical length (the axial distance from the object surface of the first prism P1 to the image surface SI), in mm;

[0096] The technical solution of the present invention will be described in detail below with five implementation methods.

[0097] First Implementation Method

[0098] The first prism P1 has positive refractive force, its object side is convex near the axis, and its image side is concave near the axis.

[0099] The first lens L1 has negative refractive power, its object side is convex near the axis, and its image side is concave near the axis;

[0100] The second lens L2 has positive refractive power, and its object side is convex near the axis, while its image side is convex near the axis.

[0101] The third lens L3 has negative refractive power, and its object side is concave near the axis, while its image side is concave near the axis.

[0102] The fourth lens L4 has positive refractive power; its object side is convex near the axis, and its image side is concave near the axis.

[0103] The fifth lens L5 has negative refractive power. Its object side is convex near the axis, and its image side is concave near the axis.

[0104] Table 1 shows the design data of the camera optical lens 10 according to the first embodiment of the present invention.

[0105] Table 1 Design data of camera optical lens 10

[0106]

[0107] Where d1 = “dp1-01” + “dp1-02”, “dp1-01” = 4.460mm, “dp1-02” = 4.240mm.

[0108] Table 2 shows the relevant optical parameters of the camera 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).

[0109] Table 2. Relevant optical parameters of camera lenses under different focusing states.

[0110]

[0111]

[0112] The meanings of each symbol are as follows.

[0113] S1: Aperture;

[0114] R: Radius of curvature of the optical surface; for lenses, it is the central radius of curvature.

[0115] Rp1: Radius of curvature of the object-side surface of the first prism P1;

[0116] Rp2: Radius of curvature of the image side of the first prism P1;

[0117] R1: The radius of curvature of the object-side surface of the first lens L1;

[0118] R2: The radius of curvature of the image-side surface of the first lens L1;

[0119] R3: The radius of curvature of the object-side surface of the second lens L2;

[0120] R4: Radius of curvature of the image-side surface of the second lens L2;

[0121] R5: The radius of curvature of the object-side surface of the third lens L3;

[0122] R6: Radius of curvature of the image-side surface of the third lens L3;

[0123] R7: The radius of curvature of the object-side surface of the fourth lens L4;

[0124] R8: Radius of curvature of the image-side surface of the fourth lens L4;

[0125] R9: The radius of curvature of the object-side surface of the fifth lens L5;

[0126] R10: Radius of curvature of the image-side surface of the fifth lens L5;

[0127] R11: Radius of curvature of the object-side surface of the optical filter GF;

[0128] R12: Radius of curvature of the image-side surface of the optical filter GF;

[0129] d: Axial thickness of the lens, axial distance between lenses;

[0130] d0: The on-axis distance from aperture S1 to the object-side surface of the first prism P1;

[0131] dp1: The sum of the axial distance from the object side surface of the first prism P1 to the reflecting surface and the axial distance from the reflecting surface to the image side surface of the first prism P1;

[0132] dp1-01: The axial distance from the object-side surface of the first prism P1 to the reflecting surface;

[0133] dp1-02: The on-axis distance from the reflecting surface of the first prism P1 to the image side surface;

[0134] 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;

[0135] d1: On-axis thickness of the first lens L1;

[0136] 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;

[0137] d3: On-axis thickness of the second lens L2;

[0138] d4: The axial distance from the image-side surface of the second lens L2 to the object-side surface of the third lens L3;

[0139] d5: On-axis thickness of the third lens L3;

[0140] 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;

[0141] d7: On-axis thickness of the fourth lens L4;

[0142] 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;

[0143] d9: On-axis thickness of the fifth lens L5;

[0144] d10: The on-axis distance from the image-side surface of the fifth lens L5 to the object-side surface of the optical filter GF;

[0145] d11: On-axis thickness of the optical filter GF;

[0146] d12: The on-axis distance from the image-side surface of the optical filter GF to the image plane SI;

[0147] nd: Refractive index of the d-line;

[0148] nd1: The refractive index of the d-line of the first prism P1;

[0149] nd2: The refractive index of the d-line of the first lens L1;

[0150] nd3: The refractive index of the d-line of the second lens L2;

[0151] nd4: The refractive index of the d-line of the third lens L3;

[0152] nd5: The refractive index of the d-line of the fourth lens L4;

[0153] nd6: The refractive index of the d-line of the fifth lens L5;

[0154] ndg: The refractive index of the d-line of the optical filter GF;

[0155] vd: Abbe number;

[0156] vd1: Abbe number of the first prism P1;

[0157] vd2: Abbe number of the first lens L1;

[0158] vd3: Abbe number of the second lens L2;

[0159] vd4: Abbe number of the third lens L3;

[0160] vd5: Abbe number of the fourth lens L4;

[0161] vd6: Abbe number of the fifth lens L5;

[0162] vdg: Abbe number of the GF of the optical filter;

[0163] FOV: Field of view;

[0164] FNO: Aperture number.

[0165] Table 3 shows the aspherical data of each lens in the camera optical lens 10 of the first embodiment of the present invention.

[0166] Table 3 Aspherical data of camera optical lens 10

[0167]

[0168]

[0169] For convenience, the aspherical surfaces of each lens surface are as shown in the following formula (1). However, the embodiments of the present invention are not limited to the aspherical polynomial form represented by formula (1).

[0170] z=(cr 2 ) / {1+[1-(k+1)(c 2 r 2 )] 1 / 2}+A4r 4 +A6r 6 +A8r 8 +A10r 10 +A12r 12 +A14r 14 +A16r 16 +A18r 18 +A20r 20 (1)

[0171] Where k is the conic 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 a tangent plane at the vertex of the aspheric optical axis).

[0172] Figure 2 , Figure 3 The diagrams show the magnification chromatic aberration and 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 camera optical lens 10 of the first embodiment. Figure 4 This illustrates a schematic diagram of field curvature and distortion after light with a wavelength of 555.0 nm passes through the camera optical lens 10 of the first embodiment. Figure 4The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0173] Table 16, which appears later, shows the values ​​corresponding to the parameters specified in the conditional expressions for various numerical values ​​in each of the first, second, third, fourth, and fifth implementation methods.

[0174] As shown in Table 16, the first embodiment satisfies all the conditional expressions.

[0175] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 10 in the first state 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 27.88°, which meets the requirements of long focal length, high magnification, and miniaturization, and has excellent optical characteristics.

[0176] Second Implementation Method

[0177] The second embodiment is basically the same as the first embodiment, and the symbols have the same meanings. For the structural form of the camera optical lens 20 in this second embodiment, please refer to... Figure 5 As shown, where, Figure 5 The camera optical lens 20 shown is in the first state; only the differences are listed below.

[0178] Unlike the first embodiment, in this embodiment, the image-side surface of the first prism P1 is planar at the paraxial position; the fifth lens L5 has positive refractive power.

[0179] Table 4 shows the design data of the camera optical lens 20 according to the second embodiment of the present invention.

[0180] Table 4 Design data for camera optical lens 20

[0181]

[0182] Where d1 = “dp1-01” + “dp1-02”, “dp1-01” = 4.550mm, “dp1-02” = 4.150mm.

[0183] Table 5 shows the relevant optical parameters of the camera 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).

[0184] Table 5. Relevant optical parameters of camera lenses under 20 different focusing states.

[0185] first state second state f 14.370 14.083 FOV 27.86° 26.71° FNO 1.98 1.94 dp2 4.212 3.079 d10 1.100 2.233

[0186] Table 6 shows the aspherical data of each lens in the camera optical lens 20 of the second embodiment of the present invention.

[0187] Table 6 Aspherical data for camera optical lenses 20

[0188]

[0189]

[0190] Figure 6 , Figure 7 The diagrams show the magnification chromatic aberration and 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 camera optical lens 20 of the second embodiment. Figure 8 This illustrates the 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.

[0191] As shown in Table 16, the second embodiment satisfies all the conditional expressions.

[0192] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 20 in the first state is 7.245mm, the full field of view image height IH is 3.594mm, and the diagonal field of view FOV is 27.86°, which meets the requirements of long focal length, high magnification, and miniaturization, and has excellent optical characteristics.

[0193] Third Implementation Method

[0194] The third embodiment is basically the same as the first embodiment, and the symbols have the same meanings as in the first embodiment. For the structural form of the camera optical lens 30 in this third embodiment, please refer to... Figure 9 As shown, where, Figure 9 The camera optical lens 30 shown is in the first state; only the differences are listed below.

[0195] Unlike the first embodiment, in this embodiment, the image-side surface of the third lens L3 is convex at the paraxial position, and the fifth lens L5 has positive refractive power.

[0196] Table 7 shows the design data of the camera optical lens 30 according to the third embodiment of the present invention.

[0197] Table 7 Design data for camera optical lens 30

[0198]

[0199] Where d1 = “dp1-01” + “dp1-02”, “dp1-01” = 4.475mm, “dp1-02” = 4.225mm.

[0200] Table 8 shows the relevant optical parameters of the camera 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).

[0201] Table 8. Relevant optical parameters of camera lenses under 30 different focusing states.

[0202]

[0203]

[0204] Table 9 shows the aspherical data of each lens in the camera optical lens 30 of the third embodiment of the present invention.

[0205] Table 9 Aspherical data for camera optical lenses 30

[0206]

[0207]

[0208] Figure 10 , Figure 11 The diagrams show the magnification chromatic aberration and 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 camera optical lens 30 of the third embodiment. Figure 12 This illustrates the 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.

[0209] As shown in Table 16, the third embodiment satisfies all the conditional expressions.

[0210] 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 FOV is 27.88°, which meets the requirements of long focal length, high magnification, and miniaturization, and has excellent optical characteristics.

[0211] Fourth Implementation Method

[0212] The fourth embodiment is basically the same as the first embodiment, and the symbols have the same meanings as in the first embodiment. For the structural form of the camera optical lens 40 in this fourth embodiment, please refer to... Figure 13 As shown, where, Figure 13 The camera optical lens 40 shown is in the first state; only the differences are listed below.

[0213] Unlike the first embodiment, in this embodiment, the object-side surface of the third lens L3 is convex near the axis.

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

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

[0216]

[0217] Where d1 = “dp1-01” + “dp1-02”, “dp1-01” = 4.550mm, “dp1-02” = 4.150mm.

[0218] Table 11 shows the relevant optical parameters of the camera 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 camera lenses under different focusing states.

[0220]

[0221]

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

[0223] Table 12 Aspherical data for camera optical lenses 40

[0224]

[0225]

[0226] Figure 14 , Figure 15 The diagrams show the magnification chromatic aberration and 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 camera optical lens 40 of the fourth embodiment. Figure 16 This illustrates the field curvature and distortion of light with 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 16, the fourth embodiment satisfies all the conditional expressions.

[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 diagonal field of view FOV is 27.88°, which meets the requirements of long focal length, high magnification, and miniaturization, and has excellent optical characteristics.

[0229] Fifth Implementation Method

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

[0231] Unlike the first embodiment, in this embodiment, the image-side surface of the third lens L3 is convex at the paraxial position.

[0232] Table 13 shows the design data of the camera optical lens 50 according to the fifth embodiment of the present invention.

[0233] Table 13 Design data for camera optical lens 50

[0234]

[0235] Where d1 = “dp1-01” + “dp1-02”, “dp1-01” = 4.465mm, “dp1-02” = 4.235mm.

[0236] Table 14 shows the relevant optical parameters of the camera 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).

[0237] Table 14 Relevant optical parameters of camera lenses under 50 different focusing states

[0238] first state second state f 14.383 14.164 FOV 27.90° 27.90° FNO 1.98 1.95 dp2 2.282 1.170 d10 1.100 2.212

[0239] Table 15 shows the aspherical data of each lens in the camera optical lens 50 of the fifth embodiment of the present invention.

[0240] Table 15 Aspherical data for camera optical lenses 50

[0241]

[0242]

[0243] Figure 18 , Figure 19The diagrams show the magnification chromatic aberration and 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 camera optical lens 50 of the fifth embodiment. Figure 20 This illustrates the 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.

[0244] As shown in Table 16, the fifth embodiment satisfies all the conditional expressions.

[0245] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 50 is 7.252mm, the full field of view image height IH is 3.594mm, and the diagonal field of view FOV is 27.90°, which meets the requirements of long focal length, high magnification, and miniaturization, and has excellent optical characteristics.

[0246] Table 16 shows the values ​​corresponding to various numerical values ​​and the parameters specified in the conditional expressions in each implementation method.

[0247]

[0248]

[0249] Those skilled in the art will understand that the above embodiments are specific implementations of the present invention, and in practical applications, various changes can 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 comprises 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 arranged sequentially from the object side to the image side. The object side of the first prism is convex at its paraxial position, the object side of the first lens is convex at its paraxial position, and the image side of the first lens is concave at its paraxial position. The object side of the second lens is convex at its paraxial position, and the image side of the second lens is convex at its paraxial position. The object side of the fourth lens is convex at its paraxial position, and the image side of the fourth lens is concave at its paraxial position. The paraxial surface of the fifth lens is concave, the object-side surface of the fifth lens is convex at the paraxial surface, and the image-side surface of the fifth lens is concave at the paraxial surface. 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. The lens assembly is adjustable and movable along the optical axis of the camera optical lens, allowing the camera optical lens to switch between a first state and a second state. The focal length of the camera optical lens is the largest in the first state and the focal length is the smallest in the second state. The focal length of the camera optical lens in the first state is fA, the image height of the camera optical lens is IH, the distance on the optical axis between the lens surface closest to the object side and the lens surface closest to the image side in the first state is Lp, the radius of curvature of the object side surface of the first prism is Rp1, the radius of curvature of the image side surface of the first prism is Rp2, the radius of curvature of the object side surface of the fifth lens is R9, the radius of curvature of the image side surface of the fifth lens is R10, and the total optical length of the camera optical lens is TTL, and satisfies the following relationship: 1.90≤fA*IH / TTL≤2.20; 0.25≤Lp / TTL≤0.41; 0.00≤Rp1 / Rp2≤1.11; 3.00≤(R9+R10) / (R9-R10)≤30.

20.

2. The camera optical lens according to claim 1, characterized in that, The on-axis thicknesses of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens are d1, d3, d5, d7, and d9, respectively, and satisfy the following relationship: 2.40≤(d1+d3+d5) / (d7+d9)≤3.

00.

3. The camera optical lens according to claim 1, characterized in that, The focal length of the first prism is fp1, and the sum of the axial distance from the object side of the first prism to the reflecting surface and the axial distance from the reflecting surface of the first prism to the image side is dp1, satisfying the following relationship: 3.22≤fp1 / fA≤7.98; 0.322≤dp1 / TTL≤0.

363.

4. The camera optical lens according to claim 1, characterized in that, 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 they satisfy the following relationship: -0.80≤f1 / fA≤-0.57; 2.83≤(R1+R2) / (R1-R2)≤3.48; 0.029≤d1 / TTL≤0.

060.

5. The camera optical lens according to claim 1, characterized in that, The second lens has a focal length of f2, a radius of curvature of R3 on the object side, a radius of curvature of R4 on the image side, and an axial thickness of d3, and satisfies the following relationship: 0.34≤f2 / fA≤0.41; -0.96≤(R3+R4) / (R3-R4)≤-0.67; 0.067≤d3 / TTL≤0.

084.

6. The camera optical lens according to claim 1, characterized in that, The third lens has a focal length of f3, a radius of curvature of R5 on the object side, a radius of curvature of R6 on the image side, and an axial thickness of d5, and satisfies the following relationship: -15.12≤f3 / fA≤-0.86; -1.74≤(R5+R6) / (R5-R6)≤2.02; 0.048≤d5 / TTL≤0.

078.

7. The camera optical lens according to claim 1, characterized in that, The fourth lens has a focal length of f4, a radius of curvature of R7 on the object side, a radius of curvature of R8 on the image side, and an axial thickness of d7, and satisfies the following relationship: 1.09≤f4 / fA≤2.50; -10.76≤(R7+R8) / (R7-R8)≤-2.02; 0.037≤d7 / TTL≤0.

042.

8. The camera optical lens according to claim 1, characterized in that, The fifth lens has a focal length of f5, a radius of curvature of R9 on the object side, a radius of curvature of R10 on the image side, and an axial thickness of d9, and satisfies the following relationship: -8.59≤f5 / fA≤494.45; 0.027≤d9 / TTL≤0.

051.

9. The camera optical lens according to claim 1, characterized in that, The first prism is made of glass.

Images