Camera lens

Abstract

The application relates to the field of optical lenses and discloses a camera optical lens, which is composed of a first prism, 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 sequence from a subject side to an image side; the first lens is a first group, the second lens, the third lens, the fourth lens and the fifth lens are a second group, the second group is arranged in a mode capable of moving along the optical axis of the camera optical lens for adjustment, so that the camera optical lens is switched between a first state and a 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, and the following relationship is met: 4.60<=fA / IH<=4.90. The camera optical lens can realize a large-aperture periscopic design and has good optical performance.

Description

Technical Field

[0001] This invention relates to the field of optical lenses, and in particular to a camera optical lens suitable for handheld terminal devices such as smartphones and digital cameras, as well as camera devices such as monitors and PC lenses. Background Technology

[0002] In recent years, with the rise of various smart devices, the demand for miniaturized camera lenses has been increasing. Furthermore, due to the shrinking pixel size of image sensors and the current trend in electronic products towards high functionality and lightweight, portable designs, miniaturized camera lenses with good image quality have become the mainstream in the market. Among them, internal focusing camera lenses, due to their high stability, rapid zoom, easy cleaning, and ability to overcome the wear and tear of external focusing lenses, are gradually being developed and applied to mobile phone cameras.

[0003] Furthermore, telephoto cameras can meet consumers' needs for shooting specific targets. Traditional telephoto cameras have an excessively large overall optical length, which does not meet the design requirements of slim and lightweight smartphones. Periscope telephoto camera designs, on the other hand, can significantly shorten the overall optical length of the camera lens while still meeting the telephoto design requirements. However, the optical performance of existing periscope telephoto camera lenses still cannot meet the demands. Summary of the Invention

[0004] To address the aforementioned problems, the present invention aims to provide a camera optical lens that, while possessing excellent optical performance, meets the design requirements of large aperture, miniaturization, and long focal length.

[0005] To solve the above-mentioned technical problems, the embodiments of the present invention provide a camera optical lens, which is composed of a first prism, 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;

[0006] The first lens is defined as a first group, and the second, third, fourth, and fifth lenses are defined as a second group. The second group is adjustable and movable along the optical axis of the camera lens, allowing the camera lens to switch between a first state and a second state. The camera lens has its maximum focal length in the first state and its minimum focal length in the second state. A reflecting surface is provided between the object-side and image-side surfaces of the first prism. The focal length of the camera lens in the first state is fA, the image height is IH, the central radius of curvature of the object-side surface of the first prism is Rp1, the central radius of curvature of the image-side surface of the first prism is Rp2, the focal length of the second group of the camera lens in the first state is fb, the focal length of the portion of the camera lens not connected to the first prism in the first state is fa, the distance from the image-side surface to the image-side surface of the fifth lens in the first state is BF, and the total optical length of the camera lens is TTL, satisfying the following relationship:

[0007] 4.60≤fA / IH≤4.90;

[0008] -4.00≤Rp1 / Rp2≤0.71;

[0009] 0.30≤fb / fa≤1.30;

[0010] 0.15≤BF / TTL≤0.40.

[0011] Preferably, the focal length of the fourth lens is f4, the central radius of curvature of the object-side surface of the fourth lens is R7, and the central radius of curvature of the image-side surface of the fourth lens is R8, and satisfies the following relationship:

[0012] 0.70≤f4 / (R7+R8)≤3.00.

[0013] Preferably, 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 to the image-side surface of the first prism is dp1, satisfying the following relationship:

[0014] -16.60≤fp1 / fA≤3.93;

[0015] 0.30≤dp1 / TTL≤0.37.

[0016] Preferably, the object-side surface of the first lens is convex at the paraxial position, and the image-side surface of the first lens is concave at the paraxial position.

[0017] The focal length of the first lens is f1, the central radius of curvature of the object side of the first lens is R1, the central radius of curvature of the image side of the first lens is R2, and the axial thickness of the first lens is d1, and the following relationship is satisfied:

[0018] -8.39≤f1 / fA≤-1.34;

[0019] 1.91≤(R1+R2) / (R1-R2)≤13.57;

[0020] 0.019≤d1 / TTL≤0.023.

[0021] Preferably, the object-side surface of the second lens is convex at the paraxial position, and the image-side surface of the second lens is convex at the paraxial position.

[0022] The focal length of the second lens is f2, the central radius of curvature of the object side of the second lens is R3, the central radius of curvature of the image side of the second lens is R4, and the axial thickness of the second lens is d3, satisfying the following relationship:

[0023] 0.41≤f2 / fA≤0.46;

[0024] -0.42≤(R3+R4) / (R3-R4)≤0.00;

[0025] 0.089≤d3 / TTL≤0.117.

[0026] Preferably, the object-side surface of the third lens is concave at the paraxial position, and the image-side surface of the third lens is concave at the paraxial position.

[0027] The focal length of the third lens is f3, the central radius of curvature of the object side of the third lens is R5, the central 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:

[0028] -0.51≤f3 / fA≤-0.35;

[0029] -0.60≤(R5+R6) / (R5-R6)≤-0.06;

[0030] 0.016≤d5 / TTL≤0.067.

[0031] Preferably, the object-side surface of the fourth lens is convex at the paraxial position, and the image-side surface of the fourth lens is concave at the paraxial position.

[0032] The fourth lens has a focal length of f4, a central radius of curvature of the object side of the fourth lens of R7, a central radius of curvature of the image side of the fourth lens of R8, and an axial thickness of d7, and satisfies the following relationship:

[0033] 1.15≤f4 / fA≤2.01;

[0034] -10.17≤(R7+R8) / (R7-R8)≤-2.55;

[0035] 0.025≤d7 / TTL≤0.033.

[0036] Preferably, the object-side surface of the fifth lens is convex at the paraxial position, and the image-side surface of the fifth lens is concave at the paraxial position.

[0037] The fifth lens has a focal length of f5, a central radius of curvature of the object side of the fifth lens of R9, a central radius of curvature of the image side of the fifth lens of R10, and an axial thickness of d9, and satisfies the following relationship:

[0038] -452.41≤f5 / fA≤10.01;

[0039] 6.81≤(R9+R10) / (R9-R10)≤52.78;

[0040] 0.019≤d9 / TTL≤0.039.

[0041] Preferably, the first prism is made of glass or plastic, and the first prism is made of glass.

[0042] The beneficial effects of the present invention are as follows: the camera optical lens according to the present invention has excellent optical characteristics, and has the characteristics of large aperture, long focal length and miniaturization, and is especially suitable for mobile phone camera lens assemblies and WEB camera lenses composed of high-pixel CCD, CMOS and other camera elements. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0044] Figure 1 This is a schematic diagram of the structure of the camera optical lens in the first state according to the first embodiment of the present invention;

[0045] Figure 2 yes Figure 1A schematic diagram of chromatic aberration at magnification for a camera lens;

[0046] Figure 3 yes Figure 1 A schematic diagram of axial aberrations of the camera optical lens shown;

[0047] Figure 4 yes Figure 1 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0048] Figure 5 This is a schematic diagram of the camera optical lens in the second state according to the first embodiment of the present invention;

[0049] Figure 6 yes Figure 5 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0050] Figure 7 yes Figure 5 A schematic diagram of axial aberrations of the camera optical lens shown;

[0051] Figure 8 yes Figure 5 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0052] Figure 9 This is a schematic diagram of the structure of the camera optical lens in the first state according to the second embodiment of the present invention;

[0053] Figure 10 yes Figure 9 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0054] Figure 11 yes Figure 9 A schematic diagram of axial aberrations of the camera optical lens shown;

[0055] Figure 12 yes Figure 9 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0056] Figure 13 This is a schematic diagram of the structure of the camera optical lens in the second state according to the second embodiment of the present invention;

[0057] Figure 14 yes Figure 13 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0058] Figure 15 yes Figure 13 A schematic diagram of axial aberrations of the camera optical lens shown;

[0059] Figure 16 yes Figure 13 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0060] Figure 17 This is a schematic diagram of the camera optical lens in its first state according to the third embodiment of the present invention;

[0061] Figure 18 yes Figure 17 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0062] Figure 19 yes Figure 17 A schematic diagram of axial aberrations of the camera optical lens shown;

[0063] Figure 20 yes Figure 17 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0064] Figure 21 This is a schematic diagram of the structure of the camera optical lens in the second state according to the third embodiment of the present invention;

[0065] Figure 22 yes Figure 21 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0066] Figure 23 yes Figure 21 A schematic diagram of axial aberrations of the camera optical lens shown;

[0067] Figure 24 yes Figure 21 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0068] Figure 25 This is a schematic diagram of the structure of the camera optical lens in the first state according to the fourth embodiment of the present invention;

[0069] Figure 26 yes Figure 25 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0070] Figure 27 yes Figure 25 A schematic diagram of axial aberrations of the camera optical lens shown;

[0071] Figure 28 yes Figure 25 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0072] Figure 29 This is a schematic diagram of the structure of the camera optical lens in the second state according to the fourth embodiment of the present invention;

[0073] Figure 30 yes Figure 29 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0074] Figure 31 yes Figure 29 A schematic diagram of axial aberrations of the camera optical lens shown;

[0075] Figure 32 yes Figure 29 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0076] Figure 33 This is a schematic diagram of the camera optical lens in its first state according to the fifth embodiment of the present invention;

[0077] Figure 34 yes Figure 33 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0078] Figure 35 yes Figure 33 A schematic diagram of axial aberrations of the camera optical lens shown;

[0079] Figure 36 yes Figure 33 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0080] Figure 37 This is a schematic diagram of the structure of the camera optical lens in the second state according to the fifth embodiment of the present invention;

[0081] Figure 38 yes Figure 37 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0082] Figure 39 yes Figure 37 A schematic diagram of axial aberrations of the camera optical lens shown;

[0083] Figure 40 yes Figure 37 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0084] Figure 41 This is a schematic diagram of the camera optical lens in the first state according to the sixth embodiment of the present invention;

[0085] Figure 42 yes Figure 41 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0086] Figure 43 yes Figure 41 A schematic diagram of axial aberrations of the camera optical lens shown;

[0087] Figure 44 yes Figure 41 A schematic diagram of field curvature and distortion of the camera optical lens shown;

[0088] Figure 45This is a schematic diagram of the second state of the camera optical lens according to the sixth embodiment of the present invention;

[0089] Figure 46 yes Figure 45 A schematic diagram of chromatic aberration at magnification for a camera lens;

[0090] Figure 47 yes Figure 45 A schematic diagram of axial aberrations of the camera optical lens shown;

[0091] Figure 48 yes Figure 45 The diagram shows the field curvature and distortion of the camera lens. Detailed Implementation

[0092] To make the objectives, technical solutions, and advantages of this invention clearer, the various embodiments of this invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this invention to facilitate a better understanding of the invention. However, the technical solutions claimed in this invention can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0093] Referring to the accompanying drawings, the present invention provides a camera optical lens 10, 20, 30, 40, 50, 60, which is composed of a first prism P1, 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 arranged sequentially from the object side to the image side.

[0094] The first lens L1 is defined as the first group, and the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 are defined as the second group. The second group is movable for focusing and is adjustable along the optical axis of the imaging optical lenses 10-60, allowing the imaging optical lenses 10-60 to switch between a first state and a second state. Thus, the first group is a fixed-focal-length group, and the second group is a movable zoom group. By moving the second group, the focal length of the imaging optical lenses 10-60 can be changed, resulting in good imaging performance in both the first and second states. The first state refers to the maximum focal length of the imaging optical lenses 10-60, and the second state refers to 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, a macro state, or a state with an object distance of 200mm. Thus, the camera optical lenses 10-60 can achieve focusing within the camera optical lenses 10-60 by moving the second group of focus.

[0095] By moving the second group to focus, the focusing process is faster and smoother, which helps with the allocation of the internal space of the camera optical lens from 10 to 60.

[0096] A reflecting surface is provided between the object-side and image-side surfaces of the first prism P1; the focal length of the imaging optical lenses 10-60 is defined as fA, and the image height of the imaging optical lenses 10-60 is defined as IH, satisfying the following relationship: 4.60≤fA / IH≤4.90. By specifying the ratio of the focal length to the image height of the imaging optical lenses 10-60, the imaging optical lenses 10-60 that meet the conditions have a longer focal length with a fixed image height, which helps to improve the magnification of the imaging optical lenses 10-60.

[0097] The central radius of curvature of the object-side surface of the first prism P1 is defined as Rp1, and the central radius of curvature of the image-side surface of the first prism P1 is defined as Rp2, satisfying the following relationship: -4.00 ≤ Rp1 / Rp2 ≤ 0.71. By defining the concave-convex shape of the first prism P1, within the conditional range, it is beneficial to mitigate the degree of deflection of light entering the first prism P1, which helps to ensure smooth subsequent propagation.

[0098] The focal length of the second group of the imaging optical lenses 10-60 in the first state is defined as fb, and the focal length of the portion of the imaging optical lenses 10-60 other than the first prism P1 in the first state is defined as fa, satisfying the following relationship: 0.30≤fb / fa≤1.30; the ratio of the focal length of the second group of the imaging optical lenses 10-60 in the first state to the focal length of the non-prism portion in the first state, by reasonably allocating the optical focal length of the imaging optical lenses 10-60, enables the imaging optical lenses 10-60 to have better imaging quality and lower sensitivity.

[0099] In the first state, the distance from the image side to the image side of the fifth lens L5 of the camera optical lenses 10-60 is defined as BF, and the total optical length of the camera optical lenses is defined as TTL, satisfying the following relationship: 0.15 ≤ BF / TTL ≤ 0.40. By achieving miniaturization of the camera optical lenses 10-60 and increasing the back focal length, the assembly of the camera optical lens 10-60 module is facilitated. Simultaneously, the total length of the optical system of the camera optical lenses 10-60 can be effectively controlled.

[0100] Under the above conditions, the camera optical lens 10-60 has good optical performance and can meet the design requirements of large aperture, long focal length and miniaturization. Based on the characteristics of the camera optical lens 10-60, it is particularly suitable for mobile phone camera lens assemblies and WEB camera lenses composed of high-pixel CCD, CMOS and other camera elements.

[0101] Based on the above conditional expressions and the functions that can be achieved, the characteristics of each lens are further refined as follows.

[0102] In this invention, the focal length of the fourth lens L4 is defined as f4, the central radius of curvature of the object-side surface of the fourth lens L4 is R7, and the central radius of curvature of the image-side surface of the fourth lens L4 is R8, satisfying the following relationship: 0.70≤f4 / (R7+R8)≤3.00. By controlling the conditional expression within a reasonable range, the optical power of the fourth lens L4 is limited within a reasonable range, which helps to reduce sensitivity. At the same time, limiting the radii of curvature of the object-side and image-side surfaces of the fourth lens L4 within a reasonable range ensures that the tolerance requirements are more in line with the current manufacturing capability level, thereby effectively balancing the aberrations of the optical system and ensuring image quality.

[0103] In this invention, the object-side surface of the first prism P1 is convex or concave near the axis, and the image-side surface is also convex or concave near the axis. The first prism P1 has positive or negative refractive power. The focal length of the first prism P1 is fp1, which satisfies the following relationship: -16.60≤fp1 / fA≤3.93. By controlling the optical power of the first prism P1 within a reasonable range, it is beneficial to correct the aberrations of the optical system.

[0104] 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 is dp1. The total optical length of the imaging optical lenses 10-60 is TTL, satisfying the following relationship: 0.30≤dp1 / TTL≤0.37. Within this range, it is beneficial to reasonably control the total optical length of the imaging optical lenses 10-60. In this invention, the object-side surface of the first lens L1 is convex near the axis, and the image-side surface is concave near the axis. The object-side and image-side surfaces of the first lens L1 can also be configured with other concave and convex distributions.

[0105] The focal length of the first lens L1 is f1, which satisfies the following relationship: -8.39≤f1 / fA≤-1.34. 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.

[0106] The central radius of curvature of the object-side surface of the first lens L1 is defined as R1, and the central radius of curvature of the image-side surface of the first lens L1 is defined as R2, satisfying the following relationship: 1.91≤(R1+R2) / (R1-R2)≤13.57. Reasonably controlling the shape of the first lens L1 allows it to effectively correct system spherical aberration. The axial thickness of the first lens L1 is d1, and the total optical length of the imaging optical lens 10 is TTL, satisfying the following relationship: 0.019≤d1 / TTL≤0.023. Within this range, it is beneficial to reasonably control the total optical length of the imaging optical lenses 10-60.

[0107] In this invention, the object-side surface of the second lens L2 is convex near the axis, and the image-side surface 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 / convex distributions.

[0108] The focal length of the second lens L2 is f2, which satisfies the following relationship: 0.41≤f2 / fA≤0.46. By controlling the positive optical power of the second lens L2 within a reasonable range, it is beneficial to correct the aberrations of the optical system.

[0109] The center radius of curvature of the object side of the second lens L2 is R3, and the center radius of curvature of the image side of the second lens L2 is R4, satisfying the following relationship: -0.42≤(R3+R4) / (R3-R4)≤0.00, which defines the shape of the second lens L2. When within this range, as lenses become smaller, it is beneficial to correct on-axis chromatic aberration.

[0110] The on-axis thickness of the second lens L2 is d3, and the total optical length of the camera optical lenses 10 to 60 is TTL, satisfying the following relationship: 0.089≤d3 / TTL≤0.117. Within the range of the condition, it is beneficial to reasonably control the total optical length of the camera optical lenses 10 to 60.

[0111] In this invention, the object-side surface of the third lens L3 is concave near the axis, and the image-side surface 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 / convex distributions.

[0112] The focal length of the third lens L3 is f3, which satisfies the following relationship: -0.51≤f3 / fA≤-0.35. By controlling the negative optical power of the third lens L3 within a reasonable range, it is beneficial to correct the aberrations of the optical system.

[0113] The central radius of curvature of the object side of the third lens L3 is R5, and the central radius of curvature of the image side of the third lens L3 is R6, satisfying the following relationship: -0.06 ≤ (R5 + R6) / (R5 - R6) ≤ -0.06, which specifies the shape of the third lens L3, which is beneficial to the shaping of the third lens L3. Within the range specified by the condition formula, it can mitigate the degree of light deflection after passing through the lens and effectively reduce aberrations.

[0114] The on-axis thickness of the third lens L3 is d5, and the total optical length of the camera optical lenses 10 to 60 is TTL, satisfying the following relationship: 0.016≤d5 / TTL≤0.067. Within the range of the condition, it is beneficial to reasonably control the total optical length of the camera optical lenses 10 to 60.

[0115] In this invention, the object-side surface of the fourth lens L4 is convex near the axis, and the image-side surface is concave near the axis. In other optional embodiments, the object-side and image-side surfaces of the fourth lens L4 may also be configured with other concave and convex distributions.

[0116] The focal length of the fourth lens L4 is f4, which satisfies the following relationship: 1.15≤f4 / fA≤2.01. By controlling the positive optical power of the fourth lens L4 within a reasonable range, it is beneficial to correct the aberrations of the optical system, so that the system has better imaging quality and lower sensitivity.

[0117] The center radius of curvature of the object side of the fourth lens L4 is R7, and the center radius of curvature of the image side of the fourth lens L4 is R8, and they satisfy the following relationship: -10.17≤(R7+R8) / (R7-R8)≤-2.55, which defines the shape of the fourth lens L4. When within this range, with the development of miniaturization, it is beneficial to correct aberrations and other problems in off-axis drawing angles.

[0118] The on-axis thickness of the fourth lens L4 is d7, and the total optical length of the camera optical lenses 10 to 60 is TTL, satisfying the following relationship: 0.025≤d7 / TTL≤0.033. Within the range of the condition, it is beneficial to reasonably control the total optical length of the camera optical lenses 10 to 60.

[0119] In this invention, the object-side surface of the fifth lens L5 is convex near the axis, and the image-side surface is concave near the axis. The fifth lens L5 has positive or negative refractive power. In other optional embodiments, the object-side and image-side surfaces of the fifth lens L5 can also be configured with other concave and convex distributions.

[0120] The focal length of the fifth lens L5 is f5, which satisfies the following relationship: -452.41≤f5 / fA≤10.01. By controlling the optical power of the first lens L5 within a reasonable range, it is beneficial to correct the aberrations of the optical system.

[0121] The central radius of curvature of the object side of the fifth lens L5 is R9, and the central radius of curvature of the image side of the fifth lens L5 is R10, and they satisfy the following relationship: 6.81≤(R9+R10) / (R9-R10)≤52.78, which specifies the shape of the fifth lens L5. When within this range, with the development of miniaturization, it is beneficial to correct aberrations and other problems in off-axis drawing angles.

[0122] The on-axis thickness of the fifth lens L5 is d9, and the total optical length of the camera optical lenses 10 to 60 is TTL, satisfying the following relationship: 0.019≤d9 / TTL≤0.039. Within the range of the condition, it is beneficial to reasonably control the total optical length of the camera optical lenses 10 to 60.

[0123] In this invention, the first prism P1 is made of glass, the first lens L1 is made of plastic, the second lens L2 is made of plastic, the third lens L3 is made of plastic, the fourth lens L4 is made of plastic, and the fifth lens L5 is made of plastic. The first prism P1 and the lenses can also be made of other materials.

[0124] 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.

[0125] In this invention, an aperture S1 is also provided between the first prism P1 and the first lens L1. The aperture S1 can also be provided in other positions.

[0126] In this invention, the aperture value FNO of the imaging optical lens 10-60 is less than or equal to 2.26, thereby achieving a large aperture and good imaging performance. Preferably, the aperture value FNO of the imaging optical lens 10 is less than or equal to 2.22.

[0127] 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, center radius of curvature, and on-axis thickness are mm.

[0128] TTL: Total optical length (the axial distance from the object surface of the first prism P1 to the image surface Si), in mm;

[0129] Aperture value FNO: refers to the ratio of the effective focal length to the entrance pupil diameter of a camera lens.

[0130] The technical solution of the present invention will now be described in detail with six embodiments.

[0131] (First Implementation)

[0132] 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.

[0133] 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;

[0134] 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.

[0135] 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.

[0136] 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.

[0137] 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.

[0138] Table 1 shows the design data of the camera optical lens 10 according to the first embodiment of the present invention.

[0139] Table 1

[0140]

[0141] Table 2 shows the relevant optical parameters of the camera lens 10 in the first embodiment of the present invention in the first state and the second state, respectively.

[0142] Table 2

[0143] First state Second state fA 16.716 17.579 FOV 24.00° 20.26° FNO 2.09 2.20 d2 2.170 0.340 d10 9.402 11.232

[0144] The meanings of each symbol are as follows.

[0145] S1: Aperture;

[0146] R: Radius of curvature at the center of the optical surface;

[0147] Rp1: The central radius of curvature of the object-side surface of the first prism P1;

[0148] Rp2: The central radius of curvature of the image side surface of the first prism P2;

[0149] R1: The central radius of curvature of the object-side surface of the first lens L1;

[0150] R2: The central radius of curvature of the image-side surface of the first lens L1;

[0151] R3: The central radius of curvature of the object-side surface of the second lens L2;

[0152] R4: The central radius of curvature of the image-side surface of the second lens L2;

[0153] R5: The central radius of curvature of the object-side surface of the third lens L3;

[0154] R6: The central radius of curvature of the image-side surface of the third lens L3;

[0155] R7: The central radius of curvature of the object side surface of the fourth lens L4;

[0156] R8: The central radius of curvature of the image-side surface of the fourth lens L4;

[0157] R9: The central radius of curvature of the object-side surface of the fifth lens L5;

[0158] R10: The central radius of curvature of the image-side surface of the fifth lens L5;

[0159] R11: The center radius of curvature of the object side surface of the optical filter GF;

[0160] R12: Radius of curvature of the center of the image side of the optical filter GF;

[0161] d: Axial thickness of the lens, axial distance between lenses;

[0162] d0: The on-axis distance from aperture S1 to the object-side surface of the first prism P1;

[0163] 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;

[0164] 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;

[0165] d1: On-axis thickness of the first lens L1;

[0166] 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;

[0167] d3: On-axis thickness of the second lens L2;

[0168] d4: The axial distance from the image-side surface of the second lens L2 to the object-side surface of the third lens L3;

[0169] d5: On-axis thickness of the third lens L3;

[0170] 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;

[0171] d7: On-axis thickness of the fourth lens L4;

[0172] 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;

[0173] d9: On-axis thickness of the fifth lens L5;

[0174] d10: The on-axis distance from the image side to the image side of the fifth lens L5;

[0175] d11: On-axis thickness of the optical filter GF;

[0176] d12: The axial distance from the image-side surface of the optical filter GF to the image plane Si;

[0177] nd: Refractive index of the d-line;

[0178] nd1: The refractive index of the d-line of the first prism P1;

[0179] nd2: The refractive index of the d-line of the first lens L1;

[0180] nd3: The refractive index of the d-line of the second lens L2;

[0181] nd4: The refractive index of the d-line of the third lens L3;

[0182] nd5: The refractive index of the d-line of the fourth lens L4;

[0183] nd6: The refractive index of the d-line of the fifth lens L5;

[0184] ndg: The refractive index of the d-line of the optical filter GF;

[0185] vd: Abbe number;

[0186] v1: Abbe number of the first prism P1;

[0187] v2: Abbe number of the first lens L1;

[0188] v3: Abbe number of the second lens L2;

[0189] v4: Abbe number of the third lens L3;

[0190] v5: Abbe number of the fourth lens L4;

[0191] v6: Abbe number of the fifth lens L5;

[0192] vg: Abbe number of the optical filter GF.

[0193] Table 3 shows the aspherical data of each lens in the camera optical lens 10 of the first embodiment of the present invention.

[0194] Table 3

[0195]

[0196]

[0197] For convenience, the aspherical surfaces of each lens surface are as shown in the following formula (1). However, the present invention is not limited to the aspherical polynomial form represented by formula (1).

[0198] z=(cr 2 ) / {1+[1-(k+1)(c 2 r 2 )] 1 / 2}+A4r 4 +A6r 6 +A8r 8 +A10r 10 +A12r 12 +A1

[0199] 4r 14 +A16r 16 +A18r 18 +A20r 20 +A22r 22 (1)

[0200] Where k is the conic coefficient, A4, A6, A8, A10, A12, A14, A16, A18, A20, and A22 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).

[0201] Figure 2 , Figure 3 The diagrams show axial aberrations and magnification chromatic aberrations of light with wavelengths of 650nm, 610nm, 555nm, 510nm, and 470nm after passing through the camera optical lens 10 in the first state. Figure 4 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 555nm passes through the camera optical lens 10 in the first state. Figure 4 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0202] Figure 6 , Figure 7 The diagrams show the axial aberration and magnification chromatic aberration of light with wavelengths of 650nm, 610nm, 555nm, 510nm, and 470nm after passing through the camera optical lens 10 of the first embodiment in the second state. Figure 8 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 555nm passes through the camera optical lens 10 of the first embodiment in the second state. Figure 8 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0203] Table 19, which appears later, shows the values ​​corresponding to the various numerical values ​​and parameters specified in the conditional expressions in each of the embodiments 1, 2, 3, 4, 5, and 6.

[0204] As shown in Table 19, the first embodiment satisfies all the conditional expressions.

[0205] In this embodiment, the axial distance from the object side to the reflecting surface of the first prism P1 is 4.900 mm, and the axial distance from the reflecting surface to the image side is 4.500 mm.

[0206] In the first state, the entrance pupil diameter ENPD of the camera optical lens 10 is 8.000mm, the full field of view image height IH is 3.600mm, and the field of view angle FOV in the diagonal direction is 24.00°. The camera optical lens 10 meets the design requirements of large aperture, long focal length, and miniaturization. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0207] (Second Implementation)

[0208] The second embodiment is basically the same as the first embodiment, and the symbols have the same meanings as the first embodiment. The differences are listed below: the object side of the first prism P1 is concave at the paraxial position, the image side of the first prism P1 is convex at the paraxial position, the first prism P1 has negative refractive power, and the fifth lens L5 has positive refractive power.

[0209] Figure 9 The diagram shown is a structural schematic of the camera optical lens 20 in the first state according to the second embodiment of the present invention.

[0210] Figure 13 The diagram shown is a structural schematic of the camera optical lens 20 in the second state according to the second embodiment of the present invention.

[0211] Table 4 shows the design data of the camera optical lens 20 according to the second embodiment of the present invention.

[0212] Table 4

[0213]

[0214]

[0215] Table 5 shows the relevant optical parameters of the camera lens 20 in the first state and the second state of the second embodiment of the present invention.

[0216] Table 5

[0217] First state Second state fA 16.922 17.772 FOV 24.00° 20.68° FNO 2.12 2.22 d2 2.481 0.594 d10 12.176 14.063

[0218] Table 6 shows the aspherical data of each lens in the camera optical lens 20 of the second embodiment of the present invention.

[0219] Table 6

[0220]

[0221]

[0222] Figure 10 , Figure 11 The diagrams show the axial aberration and magnification chromatic aberration of light with wavelengths of 650nm, 610nm, 555nm, 510nm, and 470nm after passing through the camera optical lens 20 in the first state. Figure 12 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 555nm passes through the camera optical lens 20 in the first state, according to the second 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.

[0223] Figure 14 , Figure 15 The diagrams show the axial aberration and magnification chromatic aberration of light with wavelengths of 650nm, 610nm, 555nm, 510nm, and 470nm after passing through the camera optical lens 20 in the second state. Figure 16 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 555nm passes through the camera optical lens 20 in the second state. Figure 16 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0224] Table 19, which appears later, shows the values ​​corresponding to the various numerical values ​​and parameters specified in the conditional expressions in each of the embodiments 1, 2, 3, 4, 5, and 6.

[0225] As shown in Table 19, the second embodiment satisfies all the conditional expressions.

[0226] In this embodiment, the axial distance from the object side to the reflecting surface of the first prism P1 is 4.900 mm, and the axial distance from the reflecting surface to the image side is 4.500 mm.

[0227] In the first state, the entrance pupil diameter (ENPD) of the camera optical lens 20 is 8.000 mm, the full field of view (IH) is 3.600 mm, and the field of view (FOV) in the diagonal direction is 24.00°. The camera optical lens 20 meets the design requirements of large aperture, long focal length, and miniaturization. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0228] (Third Implementation)

[0229] The third embodiment is basically the same as the first embodiment, and the symbols have the same meanings as the first embodiment. The following only lists the differences: the fifth lens L5 has positive refractive power.

[0230] Figure 17 The diagram shown is a structural schematic of the camera optical lens 30 in the first state according to the third embodiment of the present invention.

[0231] Figure 21 The diagram shown is a structural schematic of the camera optical lens 30 in the second state according to the third embodiment of the present invention.

[0232] Table 7 shows the design data of the camera optical lens 30 according to the third embodiment of the present invention.

[0233] Table 7

[0234]

[0235] Table 8 shows the relevant optical parameters of the camera lens 30 in the first state and the second state according to the third embodiment of the present invention.

[0236] Table 8

[0237]

[0238]

[0239] Table 9 shows the aspherical data of each lens in the camera optical lens 30 of the third embodiment of the present invention.

[0240] Table 9

[0241]

[0242]

[0243] In the third embodiment of the present invention, the aspherical surface of the lens surface is the aspherical surface shown in the following formula (2):

[0244] z=(cr 2 ) / {1+[1-(k+1)(c 2 r 2 )] 1 / 2}+A4r 4 +A6r 6 +A8r 8 +A10r 10 +A12r 12 +A1

[0245] 4r 14 +A16r 16 +A18r 18 +A20r 20 +A22r 22 +A24r 24 +A26r 26 (2)

[0246] Where k is the conic coefficient, A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, and A26 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).

[0247] Figure 18 , Figure 19The diagrams show the axial aberration and magnification chromatic aberration of light with wavelengths of 650nm, 610nm, 555nm, 510nm, and 470nm after passing through the camera optical lens 30 in the first state. Figure 20 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 555nm passes through the camera optical lens 30 in the first state, according to the third 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.

[0248] Figure 22 , Figure 23 The diagrams show the axial aberration and magnification chromatic aberration of light with wavelengths of 650nm, 610nm, 555nm, 510nm, and 470nm after passing through the camera optical lens 30 of the third embodiment in the second state. Figure 24 This diagram illustrates the field curvature and distortion of light with a wavelength of 555nm after passing through the camera optical lens 30 in the second state, according to the third 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.

[0249] Table 19, which appears later, shows the values ​​corresponding to the various numerical values ​​and parameters specified in the conditional expressions in each of the embodiments 1, 2, 3, 4, 5, and 6.

[0250] As shown in Table 19, the third embodiment satisfies all the conditional expressions.

[0251] In this embodiment, the axial distance from the object side to the reflecting surface of the first prism P1 is 4.900 mm, and the axial distance from the reflecting surface to the image side is 4.500 mm.

[0252] In the first state, the entrance pupil diameter (ENPD) of the camera optical lens 30 is 8.000 mm, the full field of view (IH) is 3.600 mm, and the field of view (FOV) in the diagonal direction is 24.00°. The camera optical lens 30 meets the design requirements of large aperture, long focal length, and miniaturization. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0253] (Fourth Implementation)

[0254] The fourth embodiment is basically the same as the first embodiment, and the symbols have the same meanings as the first embodiment. The following only lists the differences: the image side of the first prism P1 is convex at the paraxial position.

[0255] Figure 25 The diagram shown is a structural schematic of the camera optical lens 40 in the first state according to the fourth embodiment of the present invention.

[0256] Figure 29 The diagram shown is a structural schematic of the camera optical lens 40 in the second state according to the fourth embodiment of the present invention.

[0257] Table 10 shows the design data of the camera optical lens 40 according to the fourth embodiment of the present invention.

[0258] Table 10

[0259]

[0260] Table 11 shows data on the relevant optical parameters of the camera lens 40 in the first state and the second state according to the fourth embodiment of the present invention.

[0261] Table 11

[0262] First state Second state fA 16.682 16.473 FOV 24.00° 21.73° FNO 2.09 2.06 d2 1.630 0.101 d10 4.810 6.339

[0263] Table 12 shows the aspherical data of each lens in the camera optical lens 40 of the fourth embodiment of the present invention.

[0264] Table 12

[0265]

[0266]

[0267] Figure 26 , Figure 27 The diagrams show axial aberrations and magnification chromatic aberrations of light with wavelengths of 650nm, 610nm, 555nm, 510nm, and 470nm after passing through the camera optical lens 40 of the fourth embodiment in the first state. Figure 28 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 555nm passes through the camera optical lens 40 in the first state, according to the fourth embodiment. Figure 28 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0268] Figure 30 , Figure 31 The diagrams show axial aberrations and magnification chromatic aberrations of light with wavelengths of 650nm, 610nm, 555nm, 510nm, and 470nm after passing through the camera optical lens 40 of the fourth embodiment in the second state. Figure 32 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 555nm passes through the camera optical lens 40 of the fourth embodiment in the second state. Figure 32 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0269] Table 19, which appears later, shows the values ​​corresponding to the various numerical values ​​and parameters specified in the conditional expressions in each of the embodiments 1, 2, 3, 4, 5, and 6.

[0270] As shown in Table 19, the fourth embodiment satisfies all the conditional expressions.

[0271] In this embodiment, the axial distance from the object side to the reflecting surface of the first prism P1 is 5.000 mm, and the axial distance from the reflecting surface to the image side is 4.800 mm.

[0272] In the first state, the entrance pupil diameter ENPD of the camera optical lens 40 is 8.000mm, the full field of view image height IH is 3.600mm, and the field of view FOV in the diagonal direction is 24.00°. The camera optical lens 40 meets the design requirements of large aperture, long focal length, and miniaturization. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0273] (Fifth Implementation)

[0274] The fifth embodiment is basically the same as the first embodiment, and the symbols have the same meanings as the first embodiment. The differences are listed below: the image side of the first prism P1 is convex at the paraxial position.

[0275] Figure 33 The diagram shown is a structural schematic of the camera optical lens 50 in the first state according to the fifth embodiment of the present invention.

[0276] Figure 37 The diagram shown is a structural schematic of the camera optical lens 50 in the second state according to the fifth embodiment of the present invention.

[0277] Table 13 shows the design data of the camera optical lens 50 according to the fifth embodiment of the present invention.

[0278] Table 13

[0279]

[0280] Table 14 shows data on the relevant optical parameters of the camera lens 50 in the first state and the second state according to the fifth embodiment of the present invention.

[0281] Table 14

[0282] First state Second state fA 16.672 17.423 FOV 24.00° 21.76° FNO 2.08 2.18 d2 1.622 0.101 d10 7.043 8.564

[0283] Table 15 shows the aspherical data of each lens in the camera optical lens 50 of the fifth embodiment of the present invention.

[0284] Table 15

[0285]

[0286] Figure 34 , Figure 35 The diagrams show axial aberrations and magnification chromatic aberrations of light with wavelengths of 650nm, 610nm, 555nm, 510nm, and 470nm after passing through the camera optical lens 50 of the fifth embodiment in the first state. Figure 36 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 555nm passes through the camera optical lens 50 of the fifth embodiment in the first state. Figure 36 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0287] Figure 38 , Figure 39 The diagrams show axial aberrations and magnification chromatic aberrations of light with wavelengths of 650nm, 610nm, 555nm, 510nm, and 470nm after passing through the camera optical lens 50 of the fifth embodiment in the second state. Figure 40 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 555nm passes through the camera optical lens 50 of the fifth embodiment in the second state. Figure 40 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0288] Table 19, which appears later, shows the values ​​corresponding to the various numerical values ​​and parameters specified in the conditional expressions in each of the embodiments 1, 2, 3, 4, 5, and 6.

[0289] As shown in Table 19, the fifth embodiment satisfies all the conditional expressions.

[0290] In this embodiment, the axial distance from the object side to the reflecting surface of the first prism P1 is 5.000 mm, and the axial distance from the reflecting surface to the image side is 4.800 mm.

[0291] In the first state, the entrance pupil diameter ENPD of the camera optical lens 50 is 8.000mm, the full field of view image height IH is 3.600mm, and the field of view angle FOV in the diagonal direction is 24.00°. The camera optical lens 50 meets the design requirements of large aperture, long focal length, and miniaturization. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0292] (Sixth Implementation Method)

[0293] The sixth embodiment is basically the same as the first embodiment, and the symbols have the same meanings as the first embodiment. The differences are listed below: the image side of the first prism P1 is convex at the paraxial position.

[0294] Figure 41 The diagram shown is a structural schematic of the camera optical lens 60 in the first state according to the sixth embodiment of the present invention.

[0295] Figure 45 The diagram shown is a structural schematic of the camera optical lens 60 in the second state according to the sixth embodiment of the present invention.

[0296] Table 16 shows the design data of the camera optical lens 60 according to the sixth embodiment of the present invention.

[0297] Table 16

[0298]

[0299]

[0300] Table 17 shows data on the relevant optical parameters of the camera lens 60 in the first state and the second state according to the sixth embodiment of the present invention.

[0301] Table 17

[0302] First state Second state fA 16.672 16.446 FOV 24.00° 21.78° FNO 2.08 2.06 d2 1.622 0.100 d10 6.192 7.714

[0303] Table 18 shows the aspherical data of each lens in the camera optical lens 60 of the sixth embodiment of the present invention.

[0304] Table 18

[0305]

[0306]

[0307] Figure 42 , Figure 43 The diagrams show axial aberrations and magnification chromatic aberrations of light with wavelengths of 650nm, 610nm, 555nm, 510nm, and 470nm after passing through the camera optical lens 60 of the sixth embodiment in the first state. Figure 44 This shows a schematic diagram of field curvature and distortion after light with a wavelength of 555nm passes through the camera optical lens 60 of the sixth embodiment in the first state. Figure 44 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0308] Figure 46 , Figure 47 The diagrams show axial aberrations and magnification chromatic aberrations of light with wavelengths of 650nm, 610nm, 555nm, 510nm, and 470nm after passing through the camera optical lens 60 of the sixth embodiment in the second state. Figure 48This diagram illustrates the field curvature and distortion of light with a wavelength of 555nm after passing through the camera optical lens 60 of the sixth embodiment in the second state. Figure 48 The field curvature S is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.

[0309] Table 19, which appears later, shows the values ​​corresponding to the various numerical values ​​and parameters specified in the conditional expressions in each of the embodiments 1, 2, 3, 4, 5, and 6.

[0310] As shown in Table 19, the sixth embodiment satisfies all the conditional expressions.

[0311] In this embodiment, the axial distance from the object side to the reflecting surface of the first prism P1 is 5.000 mm, and the axial distance from the reflecting surface to the image side is 4.800 mm.

[0312] In the first state, the entrance pupil diameter ENPD of the camera optical lens 60 is 8.000mm, the full field of view image height IH is 3.600mm, and the field of view FOV in the diagonal direction is 24.00°. The camera optical lens 60 meets the design requirements of large aperture, long focal length, and miniaturization. Its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

[0313] Table 19

[0314] Parameters and conditional expressions Implementation Method 1 Implementation Method 2 Implementation Method 3 Implementation Method 4 fA / IH 4.88 4.70 4.63 4.63 Rp1 / Rp2 0.33 0.69 0.70 -3.95 fb / fa 1.25 1.01 0.62 0.80 BF / TTL 0.34 0.39 0.29 0.17 f4 / (R7+R8) 0.78 0.88 1.00 2.90 fA 16.716 16.922 16.661 16.682 fp1 51.189 -280.775 65.394 59.003 f1 -22.557 -68.397 -30.413 -139.882 f2 6.943 7.701 7.317 7.673 f3 -8.282 -8.507 -8.289 -7.995 f4 22.062 29.152 25.091 33.383 f5 -7562.100 169.296 67.352 -39.709 TTL 27.551 31.000 27.065 28.444 IH 3.600 3.600 3.600 3.600 Parameters and conditional expressions Implementation Method 5 Implementation Method 6 fA / IH 4.63 4.63 Rp1 / Rp2 -1.25 -2.60 fb / fa 0.31 0.54 BF / TTL 0.26 0.22 f4 / (R7+R8) 1.78 1.79 fA 16.672 16.672 fp1 25.803 36.082 f1 -31.821 -54.280 f2 7.492 7.344 f3 -6.422 -5.965 f4 19.470 19.179 f5 -105.265 -74.934 TTL 26.678 28.130 IH 3.600 3.600

[0315] 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 consists of a first prism, 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 first lens is defined as a first group, and the second lens, the third lens, the fourth lens, and the fifth lens are defined as a second group. The second group is configured to be movable and adjustable along the optical axis of the camera lens, so that the camera lens can switch between a first state and a second state. The camera lens has the largest focal length in the first state and the smallest focal length in the second state. A reflecting surface is provided between the object-side and image-side surfaces of the first prism; 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 central radius of curvature of the object-side surface of the first prism is Rp1, the central radius of curvature of the image-side surface of the first prism is Rp2, the focal length of the second group of the camera optical lens in the first state is fb, the focal length of the portion of the camera optical lens other than the first prism in the first state is fa, the distance from the image-side surface to the image-side surface of the fifth lens in the first state is BF, and the total optical length of the camera optical lens is TTL, and the following relationship is satisfied: 4.60≤fA / IH≤4.90; -4.00≤Rp1 / Rp2≤0.71; 0.30≤fb / fa≤1.30; 0.15≤BF / TTL≤0.40; The object-side surface of the first lens is convex at the paraxial position, and 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, and the image-side surface of the second lens is convex at the paraxial position. The object-side surface of the third lens is concave 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 convex at the paraxial position, and the image-side surface of the fourth lens is concave at the paraxial position. 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.

2. The camera optical lens according to claim 1, characterized in that, The fourth lens has a focal length of f4, a central radius of curvature of R7 on the object side, and a central radius of curvature of R8 on the image side, and satisfies the following relationship: 0.70≤f4 / (R7+R8)≤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 surface of the first prism to the reflecting surface and the axial distance from the reflecting surface to the image-side surface of the first prism is dp1, satisfying the following relationship: -16.60≤fp1 / fA≤3.93; 0.30≤dp1 / TTL≤0.

37.

4. The camera optical lens according to claim 1, characterized in that, The focal length of the first lens is f1, the central radius of curvature of the object side of the first lens is R1, the central radius of curvature of the image side of the first lens is R2, and the axial thickness of the first lens is d1, and the following relationship is satisfied: -8.39≤f1 / fA≤-1.34; 1.91≤(R1+R2) / (R1-R2)≤13.57; 0.019≤d1 / TTL≤0.

023.

5. The camera optical lens according to claim 1, characterized in that, The focal length of the second lens is f2, the central radius of curvature of the object side of the second lens is R3, the central radius of curvature of the image side of the second lens is R4, and the axial thickness of the second lens is d3, satisfying the following relationship: 0.41≤f2 / fA≤0.46; -0.42≤(R3+R4) / (R3-R4)≤0.00; 0.089≤d3 / TTL≤0.

117.

6. The camera optical lens according to claim 1, characterized in that, The focal length of the third lens is f3, the central radius of curvature of the object side of the third lens is R5, the central 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: -0.51≤f3 / fA≤-0.35; -0.60≤(R5+R6) / (R5-R6)≤-0.06; 0.016≤d5 / TTL≤0.

067.

7. The camera optical lens according to claim 1, characterized in that, The fourth lens has a focal length of f4, a central radius of curvature of the object side of the fourth lens of R7, a central radius of curvature of the image side of the fourth lens of R8, and an axial thickness of d7, and satisfies the following relationship: 1.15≤f4 / fA≤2.01; -10.17≤(R7+R8) / (R7-R8)≤-2.55; 0.025≤d7 / TTL≤0.

033.

8. The camera optical lens according to claim 1, characterized in that, The fifth lens has a focal length of f5, a central radius of curvature of the object side of the fifth lens of R9, a central radius of curvature of the image side of the fifth lens of R10, and an axial thickness of d9, and satisfies the following relationship: -452.41≤f5 / fA≤10.01; 6.81≤(R9+R10) / (R9-R10)≤52.78; 0.019≤d9 / TTL≤0.

039.

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

Images