Shooting optical lens

Abstract

The invention discloses a camera shooting optical lens. The camera shooting optical lens is composed of a first prism with positive refraction power, a first lens with negative refraction power, a second lens with positive refraction power, a third lens, a fourth lens and a fifth lens which are sequentially arranged from the object side to the image side. A reflecting surface is arranged between the object side surface and the image side surface of the first prism, the first lens, the second lens and the third lens form a first lens group, the fourth lens and the fifth lens form a second lens group, and the first lens group can be movably adjusted along the optical axis of the camera optical lens, so that the camera optical lens is switched between a first state and a second state. Wherein the focal length of the shooting optical lens in the first state is fA, the image height of the shooting optical lens is IH, and the following relational expression is satisfied: fA / IH is more than or equal to 4.00 and less than or equal to 5.50. The shooting optical lens can realize large-aperture periscopic design, and has good optical performance.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of optical technology, and in particular to a camera optical lens. Background Art

[0002] With the rapid development and popularization of smart phones, the research and development and design of cameras have developed rapidly. In addition, as the current trend of electronic products is to have good functions and a thin and light appearance, miniaturized cameras with good imaging quality have become the mainstream in the current market.

[0003] Telephoto cameras can meet consumers' needs for photographing specific targets. Traditional telephoto cameras have too large an optical length and do not meet the design requirements of thin and light smartphones. The periscope telephoto camera design can significantly shorten the optical length of the camera optical lens while meeting the telephoto design. However, the optical performance of existing periscope telephoto camera optical lenses still cannot meet the demand. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a camera optical lens that can meet the requirements of mobile focus, realize a large aperture periscope design, and has good optical performance.

[0005] In order to solve the above technical problems, the first aspect of the present invention provides a camera optical lens, which is composed of a first prism with positive refractive power, a first lens with negative refractive power, a second lens with positive refractive power, a third lens, a fourth lens, and a fifth lens, which are arranged in sequence from the object side to the image side; a reflecting surface is provided between the object side surface and the image side surface of the first prism, the first lens, the second lens and the third lens form a first lens group, the fourth lens and the fifth lens form a second lens group, and the first lens group can be moved and adjusted along the optical axis of the camera optical lens. The camera optical lens is switched 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; 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 radius of curvature of the object side of the first prism is Rp1, the radius of curvature of the image side of the first prism is Rp2, the focal length of the first lens is f1, the back focal length of the camera optical lens is BF, the total optical length of the camera optical lens is TTL, and the following relationship is satisfied:

[0006] 4.00≤fA / IH≤5.50;

[0007] -1.20≤Rp1 / Rp2≤1.10;

[0008] -2.00≤f1 / fA≤-0.30;

[0009] 0.11≤BF / TTL≤0.33.

[0010] Optionally, the camera optical lens satisfies the following relationship:

[0011] 4.00≤fA / IH≤5.34.

[0012] Optionally, the radius of curvature of the object side of the first lens is R1, the radius of curvature of the image side of the first lens is R2, and the following relationship is satisfied:

[0013] 2.30≤(R1+R2) / (R1-R2)≤4.60.

[0014] Optionally, the object side surface of the first prism is a curved surface and is convex at the near axis, the focal length of the first prism is fp1, the sum of the on-axis distance from the object side surface of the first prism to the reflecting surface and the on-axis distance from the reflecting surface to the image side surface of the first prism is dp1, and the following relationship is satisfied:

[0015] 1.41≤fp1 / fA≤11.18;

[0016] 0.26≤dp1 / TTL≤0.34.

[0017] Optionally, the object side surface of the first lens is convex at the paraxial position, and the image side surface is concave at the paraxial position; the axial thickness of the first lens is d1, and satisfies the following relationship:

[0018] 0.018≤d1 / TTL≤0.037.

[0019] Optionally, the object side surface of the second lens is convex at the paraxial position; 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, the focal length of the second lens is f2, the axial thickness of the second lens is d3, and the following relationship is satisfied:

[0020] -1.25≤(R3+R4) / (R3-R4)≤0.24;

[0021] 0.19≤f2 / fA≤0.58;

[0022] 0.04≤d3 / TTL≤0.08.

[0023] Optionally, the radius of curvature of the object side of the third lens is R5, the radius of curvature of the image side of the third lens is R6, the focal length of the third lens is f3, the axial thickness of the third lens is d5, and the following relationship is satisfied:

[0024] -111.10≤(R5+R6) / (R5-R6)≤149.30;

[0025] -11.10≤f3 / fA≤129.47;

[0026] 0.015≤d5 / TTL≤0.106.

[0027] Optionally, the radius of curvature of the object side of the fourth lens is R7, the radius of curvature of the image side of the fourth lens is R8, the focal length of the fourth lens is f4, the axial thickness of the fourth lens is d7, and the following relationship is satisfied:

[0028] -3.93≤(R7+R8) / (R7-R8)≤6104.00;

[0029] -205.84≤f4 / fA≤45.03;

[0030] 0.06≤d7 / TTL≤0.12.

[0031] Optionally, the image side surface of the fifth lens is concave at the paraxial position; 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, the focal length of the fifth lens is f5, the axial thickness of the fifth lens is d9, and the following relationship is satisfied:

[0032] -5.93≤(R9+R10) / (R9-R10)≤6.18;

[0033] -1.97≤f5 / fA≤1.68;

[0034] 0.02≤d9 / TTL≤0.11.

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

[0036] The beneficial effects of the present invention are: a camera optical lens is formed by combining a prism and a lens, and five lenses are divided into two groups. The front group moves to focus, and the focusing process is faster and smoother. At the same time, the physical length of the lens can be maintained unchanged, which is helpful for the allocation of the internal space of the device. The camera optical lens that meets various conditions has a longer focal length when the image height is fixed, which helps to improve the system magnification. It is helpful to alleviate the degree of deflection of light entering the lens, which is helpful for subsequent smooth propagation. By reasonably allocating the optical focal length of the system, the system has better imaging quality and lower sensitivity. On the basis of achieving miniaturization, the rear focal length is conducive to the assembly of the module, and at the same time, the total length of the optical system can be effectively controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0038] Figure 1a is a schematic structural diagram of the camera optical lens of the first embodiment of the present invention in the first state;

[0039] Figure 1b is a schematic structural diagram of the camera optical lens of the first embodiment of the present invention in the second state;

[0040] Figure 2a yes Figure 1a Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0041] Figure 2b yes Figure 1b Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0042] Figure 3a yes Figure 1a Schematic diagram of axial aberration of the camera optical lens shown;

[0043] Figure 3b yes Figure 1b Schematic diagram of axial aberration of the camera optical lens shown;

[0044] Figure 4a yes Figure 1a Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0045] Figure 4b yes Figure 1b Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0046] Figure 5a is a schematic structural diagram of a camera optical lens in a first state according to a second embodiment of the present invention;

[0047] Figure 5b is a schematic structural diagram of the imaging optical lens of the second embodiment of the present invention in the second state;

[0048] Figure 6a yes Figure 5a Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0049] Figure 6b yes Figure 5b Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0050] Figure 7ayes Figure 5a Schematic diagram of axial aberration of the camera optical lens shown;

[0051] Figure 7b yes Figure 5b Schematic diagram of axial aberration of the camera optical lens shown;

[0052] Figure 8a yes Figure 5a Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0053] Figure 8b yes Figure 5b Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0054] Figure 9a is a schematic structural diagram of a camera optical lens in a first state according to a third embodiment of the present invention;

[0055] Figure 9b is a schematic structural diagram of a camera optical lens in a second state according to a third embodiment of the present invention;

[0056] Fig.10a yes Figure 9a Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0057] Fig.10b yes Figure 9b Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0058] Fig.11a yes Figure 9a Schematic diagram of axial aberration of the camera optical lens shown;

[0059] Fig.11b yes Figure 9b Schematic diagram of axial aberration of the camera optical lens shown;

[0060] Fig.12a yes Figure 9a Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0061] Figure 12b yes Figure 9b Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0062] Fig.13a is a schematic structural diagram of a camera optical lens in a first state according to a fourth embodiment of the present invention;

[0063] Fig.13b is a schematic structural diagram of a camera optical lens in a second state according to a fourth embodiment of the present invention;

[0064] Fig.14a yes Fig.13aSchematic diagram of field curvature and distortion of the camera optical lens shown;

[0065] Fig.14b yes Fig.13b Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0066] Fig.15a yes Fig.13a Schematic diagram of axial aberration of the camera optical lens shown;

[0067] Fig.15b yes Fig.13b Schematic diagram of axial aberration of the camera optical lens shown;

[0068] Fig.16a yes Fig.13a Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0069] Fig.16b yes Fig.13b Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0070] Fig.17a is a schematic structural diagram of a camera optical lens in a first state according to a fifth embodiment of the present invention;

[0071] Fig.17b is a schematic structural diagram of a camera optical lens in a second state according to a fifth embodiment of the present invention;

[0072] Fig.18a yes Fig.17a Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0073] Fig.18b yes Fig.17b Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0074] Fig.19a yes Fig.17a Schematic diagram of axial aberration of the camera optical lens shown;

[0075] Fig.19b yes Fig.17b Schematic diagram of axial aberration of the camera optical lens shown;

[0076] Fig.20a yes Fig.17a Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0077] Fig.20b yes Fig.17b Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0078] Fig.21a is a schematic structural diagram of a camera optical lens in a first state according to a sixth embodiment of the present invention;

[0079] Figure 21b is a schematic structural diagram of a camera optical lens in a second state according to a sixth embodiment of the present invention;

[0080] Fig.22a yes Fig.21a Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0081] Figure 22b yes Figure 21b Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0082] Fig.23a yes Fig.21a Schematic diagram of axial aberration of the camera optical lens shown;

[0083] Figure 23b yes Figure 21b Schematic diagram of axial aberration of the camera optical lens shown;

[0084] Fig.24a yes Fig.21a Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0085] Figure 24b yes Figure 21b Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0086] Fig.25a is a schematic structural diagram of a camera optical lens in a first state according to a seventh embodiment of the present invention;

[0087] Fig.25b is a schematic structural diagram of a seventh embodiment of the imaging optical lens of the present invention in a second state;

[0088] Fig.26a yes Fig.25a Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0089] Figure 26b yes Fig.25b Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0090] Fig.27a yes Fig.25a Schematic diagram of axial aberration of the camera optical lens shown;

[0091] Figure 27b yes Fig.25b Schematic diagram of axial aberration of the camera optical lens shown;

[0092] Fig.28a yes Fig.25a Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0093] Fig.28b yes Fig.25b Schematic diagram of magnification chromatic aberration of the camera optical lens shown. DETAILED DESCRIPTION

[0094] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it can be understood by those skilled in the art that in the embodiments of the present invention, many technical details are provided to enable readers to better understand the present invention. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present invention can be implemented.

[0095] Referring to the accompanying drawings, the technical solution of the present invention provides a camera optical lens 10, 20, 30, 40, 50, 60, 70, which is composed of a first prism P1 with positive refractive power, a first lens L1 with negative refractive power, a second lens L2 with positive refractive power, a third lens L3, a fourth lens L4, and a fifth lens L5, which are arranged in sequence from the object side to the image side; a reflecting surface RF is provided between the object side surface and the image side surface of the first prism P1, and the first lens L1, the second lens L2 and the third lens L3 are provided. The fourth lens L4 and the fifth lens L5 are the first lens group, the first lens group is movable and adjustable along the optical axis of the imaging optical lens 10, 20, 30, 40, 50, 60, 70, so that the imaging optical lens 10, 20, 30, 40, 50, 60, 70 can be switched between the first state and the second state, wherein the focal length of the imaging optical lens 10, 20, 30, 40, 50, 60, 70 is the largest in the first state, and the focal length of the imaging optical lens 10, 20, 30, 40, 50, 60, 70 is the smallest in the second state.

[0096] The focal length of the camera optical lens 10, 20, 30, 40, 50, 60, 70 in the first state is fA, the image height of the camera optical lens 10, 20, 30, 40, 50, 60, 70 is IH, the radius of curvature of the object side surface of the first prism P1 is Rp1, the radius of curvature of the image side surface of the first prism P1 is Rp2, the focal length of the first lens L1 is f1, the back focal length of the camera optical lens 10, 20, 30, 40, 50, 60, 70 is BF, the total optical length of the camera optical lens 10, 20, 30, 40, 50, 60, 70 is TTL, and the following relationship is satisfied:

[0097] 4.00≤fA / IH≤5.50 (1)

[0098] -1.20≤Rp1 / Rp2≤1.10 (2)

[0099] -2.00≤f1 / fA≤-0.30 (3)

[0100] 0.11≤BF / TTL≤0.33 (4)

[0101] Among them, the camera optical lenses 10, 20, 30, 40, 50, 60, and 70 are periscope optical lenses with five lenses, and the camera optical lenses 10, 20, 30, 40, 50, 60, and 70 are composed of a first prism P1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, and a fifth lens L5 arranged in sequence from the object side to the image side.

[0102] The five lenses of the camera optical lenses 10, 20, 30, 40, 50, 60, and 70 are respectively a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, and a fifth lens L5, and the five lenses are divided into two groups (the first three lenses form a front group, and the last two lenses form a rear group), namely a first lens group and a second lens group. The first lens group is closer to the object side than the second lens group.

[0103] The first lens group is the front group, the first lens group is composed of the first lens L1, the second lens L2 and the third lens L3, the object side surface of the first lens group is the object side surface of the first lens L1, and the image side surface of the first lens group is the image side surface of the third lens L3. The second lens group is the rear group, the second lens group is composed of the fourth lens L4 and the fifth lens L5, the object side surface of the second lens group is the object side surface of the fourth lens L4, and the image side surface of the second lens group is the image side surface of the fifth lens L5. The front group including the first lens L1, the second lens L2 and the third lens L3 can be moved for focusing. The process is faster and smoother when focusing, and at the same time, the physical length of the camera optical lenses 10, 20, 30, 40, 50, 60, 70 can be maintained unchanged, which is helpful for the space allocation inside the device.

[0104] The first lens group is located between the first prism P1 and the second lens group, and the first lens group can move along the optical axis of the camera optical lens 10, 20, 30, 40, 50, 60, 70, so that the on-axis distance from the image side of the first prism P1 to the object side of the first lens group and the on-axis distance from the image side of the first lens group to the object side of the second lens group can be adjusted. In this way, the first lens group is a mobile zoom group, and the second lens group is a fixed focal length group. Through the movement of the first lens group, the focal length of the camera optical lens 10, 20, 30, 40, 50, 60, 70 can be changed, so that the camera optical lens 10, 20, 30, 40, 50, 60, 70 has a good imaging effect in both the first state and the second state. The first state refers to the state in which the focal length of the camera optical lens 10, 20, 30, 40, 50, 60, 70 is the largest, and the second state refers to the state in which the focal length of the camera optical lens 10, 20, 30, 40, 50, 60, 70 is the smallest. For example, the first state can be a telephoto state, or a state in which the object distance is infinite; the second state can be a short focus state or a macro state, or a state in which the object distance is 200 mm. In this way, the camera optical lens 10, 20, 30, 40, 50, 60, 70 can focus by moving the front group, realizing the focusing method of focusing within the camera optical lens 10, 20, 30, 40, 50, 60, 70.

[0105] The conditional expression (1) specifies the ratio of the focal length fA to the image height IH of the imaging optical lens 10, 20, 30, 40, 50, 60, 70 in the first state. Within the range defined by the conditional expression (1), the imaging optical lens 10, 20, 30, 40, 50, 60, 70 has a longer focal length when the image height IH is fixed, which helps to improve the magnification of the imaging optical lens 10, 20, 30, 40, 50, 60, 70. More preferably, 4.00≤fA / IH≤5.34.

[0106] Conditional equation (2) specifies the ratio range of the radius of curvature Rp1 of the object side surface of the first prism P1 to the radius of curvature Rp2 of the image side surface of the first prism P1, and controls the shapes of the object side surface and the image side surface of the first prism P1. Within the range defined by conditional equation (2), it helps to mitigate the degree of deflection of light entering the lens, and helps to ensure subsequent smooth propagation.

[0107] The conditional expression (3) specifies the ratio range of the focal length of the first lens L1 and the focal length fA of the imaging optical lens 10, 20, 30, 40, 50, 60, 70 in the first state. By reasonably allocating the optical focal lengths of the imaging optical lenses 10, 20, 30, 40, 50, 60, 70, within the range defined by the conditional expression (3), the imaging optical lenses 10, 20, 30, 40, 50, 60, 70 have better imaging quality and lower sensitivity.

[0108] Conditional formula (4) specifies the ratio range of the back focal length of the camera optical lens 10, 20, 30, 40, 50, 60, 70 to the total optical length of the camera optical lens 10, 20, 30, 40, 50, 60, 70. By controlling the back focal length of the camera optical lens 10, 20, 30, 40, 50, 60, 70, within the range defined by conditional formula (4), the back focal length is conducive to the assembly of the module on the basis of miniaturization. At the same time, the total optical length of the camera optical lens 10, 20, 30, 40, 50, 60, 70 can be effectively controlled.

[0109] Under the condition that the above conditions are met, the five-piece lens is divided into a first lens group and a second lens group, and the first lens group is moved to focus, so as to realize the focusing mode of focusing inside the camera optical lens 10, 20, 30, 40, 50, 60, 70; the ratio of the focal length to the image height of the camera optical lens 10, 20, 30, 40, 50, 60, 70 is set, and the camera optical lens 10, 20, 30, 40, 50, 60, 70 has a longer focal length when the image height is fixed, which helps to improve the camera optical lens 10, 20, 30, 40, 50, 60, 70. 0; setting the concave-convex shape of the first prism P1 is conducive to alleviating the degree of deflection of light passing through the first prism P1; by reasonably allocating the optical focal length of the camera optical lenses 10, 20, 30, 40, 50, 60, 70, the camera optical lenses 10, 20, 30, 40, 50, 60, 70 have better imaging quality and lower sensitivity; by controlling the back focal length of the camera optical lenses 10, 20, 30, 40, 50, 60, 70, the total optical length of the camera optical lenses 10, 20, 30, 40, 50, 60, 70 can be effectively controlled.

[0110] Based on the above conditional expressions and the functions that can be achieved, the characteristics of each lens are further refined as follows.

[0111] Preferably, the radius of curvature of the object side surface of the first lens L1 is R1, the radius of curvature of the image side surface of the first lens L1 is R2, and the following relationship is satisfied:

[0112] 2.30≤(R1+R2) / (R1-R2)≤4.60 (5)

[0113] Conditional formula (5) specifies the ratio range of the radius of curvature R1 of the object side surface of the first lens L1 to the radius of curvature R2 of the image side surface. Under this limited condition, by reasonably controlling the surface shape of the first lens L1, it is helpful to reduce the sensitivity of the camera optical lens 10, 20, 30, 40, 50, 60, 70. By reducing the difficulty of molding, the manufacturing yield can be improved, and the stray light generated by the lens can also be reduced, thereby improving the imaging quality of the lens.

[0114] The object side surface of the first prism P1 is convex at the near axis, and the image side surface is convex, concave or flat at the near axis. The object side surface of the first prism P1 can also be set to have other surface distributions.

[0115] Preferably, the focal length of the first prism P1 is fp1, the sum of the on-axis distance from the object side surface of the first prism P1 to the reflecting surface and the on-axis distance from the reflecting surface to the image side surface of the first prism P1 is dp1, and the following relationship is satisfied:

[0116] 1.41≤fp1 / fA≤11.18 (6)

[0117] 0.26≤dp1 / TTL≤0.34 (7)

[0118] Conditional equation (6) stipulates the ratio range of the focal length fp1 of the first prism P1 and the focal length fA of the camera optical lens 10, 20, 30, 40, 50, 60, 70 in the first state. Within this range, it helps to improve the optical performance of the camera optical lens 10, 20, 30, 40, 50, 60, 70.

[0119] Conditional equation (7) specifies the ratio range of the sum of the on-axis distance dp1 from the object side surface of the first prism P1 to the reflecting surface and the on-axis distance from the reflecting surface to the image side surface of the first prism P1 to the total optical length TTL of the imaging optical lens 10, 20, 30, 40, 50, 60, 70. Within this ratio range, it is beneficial to realize the miniaturized design of the imaging optical lens 10, 20, 30, 40, 50, 60, 70.

[0120] The object side surface of the first lens L1 is convex at the paraxial position, and the image side surface thereof is concave at the paraxial position. The object side surface and the image side surface of the first lens L1 may also be arranged to have other concave and convex distributions.

[0121] The axial thickness of the first lens L1 is d1, the total optical length of the camera optical lenses 10, 20, 30, 40, 50, 60, 70 is TTL, and the following relationship is satisfied:

[0122] 0.018≤d1 / TTL≤0.037 (8)

[0123] The conditional expression (8) specifies the ratio range of the axial thickness d1 of the first lens L1 to the total optical length TTL of the imaging optical lens 10, 20, 30, 40, 50, 60, 70. Within the range defined by the conditional expression, it is conducive to realizing a miniaturized design.

[0124] The object side surface of the second lens L2 is convex at the paraxial position, and the image side surface thereof is concave or convex at the paraxial position. The object side surface of the second lens L2 can also be set as a concave surface.

[0125] Preferably, the radius of curvature of the object side surface of the second lens L2 is R3, the radius of curvature of the image side surface of the second lens L2 is R4, the focal length of the second lens L2 is f2, the axial thickness of the second lens L2 is d3, and the following relationship is satisfied:

[0126] -1.25≤(R3+R4) / (R3-R4)≤0.24 (9)

[0127] 0.19≤f2 / fA≤0.58 (10)

[0128] 0.04≤d3 / TTL≤0.08 (11)

[0129] The conditional expression (9) specifies the shape of the second lens L2, which is beneficial to the molding of the second lens L2. Within the range specified by the conditional expression (9), the degree of deflection of light passing through the lens can be alleviated, thereby effectively reducing aberrations.

[0130] Conditional formula (10) specifies the ratio range of the focal length f2 of the second lens L2 to the focal length fA of the imaging optical lenses 10, 20, 30, 40, 50, 60, 70 in the first state. Within this range, the system has better imaging quality and lower sensitivity through reasonable distribution of optical power.

[0131] The conditional expression (11) specifies the ratio range of the axial thickness d3 of the second lens L2 to the total optical length TTL of the imaging optical lens 10, 20, 30, 40, 50, 60, 70. Within the range of the conditional expression, it is beneficial to realize the miniaturized design of the imaging optical lens 10, 20, 30, 40, 50, 60, 70.

[0132] The third lens L3 has positive or negative refractive power, and its object-side surface is concave or convex at the paraxial position, and its image-side surface is concave or convex at the paraxial position.

[0133] Preferably, the radius of curvature of the object side surface of the third lens L3 is R5, the radius of curvature of the image side surface of the third lens L3 is R6, the focal length of the third lens L3 is f3, the axial thickness of the third lens L3 is d5, and the following relationship is satisfied:

[0134] -111.10≤(R5+R6) / (R5-R6)≤149.30 (12)

[0135] -11.10≤f3 / fA≤129.47 (13)

[0136] 0.015≤d5 / TTL≤0.106 (14)

[0137] Conditional expression (12) specifies the shape of the third lens L3. Within this limited range, as the imaging optical lenses 10, 20, 30, 40, 50, 60, and 70 develop toward miniaturization, it is beneficial to correct the problem of axial chromatic aberration.

[0138] The conditional expression (13) limits the ratio range of the focal length f3 of the third lens L3 and the focal length fA of the imaging optical lenses 10, 20, 30, 40, 50, 60, 70 in the first state, which helps to improve the performance of the optical system.

[0139] Conditional formula (14) specifies the ratio range of the axial thickness d5 of the third lens L3 to the total optical length TTL of the imaging optical lens 10, 20, 30, 40, 50, 60, 70. Within this parameter range, it is beneficial to realize the miniaturized design of the imaging optical lens 10, 20, 30, 40, 50, 60, 70.

[0140] The fourth lens L4 has positive or negative refractive power, and its object-side surface is concave or convex at the paraxial position, and its image-side surface is concave or convex at the paraxial position.

[0141] Preferably, the radius of curvature of the object side surface of the fourth lens L4 is R7, the radius of curvature of the image side surface of the fourth lens L4 is R8, the focal length of the fourth lens L4 is f4, the axial thickness of the fourth lens is d7, and the following relationship is satisfied:

[0142] -3.93≤(R7+R8) / (R7-R8)≤6104.00 (15)

[0143] -205.84≤f4 / fA≤45.03 (16)

[0144] 0.06≤d7 / TTL≤0.12 (17)

[0145] Conditional expression (15) specifies the shape of the fourth lens L4. Within the range specified by the conditional expression, the shape of the fourth lens L4 is reasonably controlled so that the fourth lens L4 can effectively correct the system spherical aberration.

[0146] Conditional expression (16) specifies the ratio range of the focal length f4 of the fourth lens L4 to the focal length fA of the imaging optical lens 10, 20, 30, 40, 50, 60, 70 in the first state. Within the range of the conditional expression, the light angle of the imaging optical lens 10, 20, 30, 40, 50, 60, 70 can be effectively smoothed, thereby reducing the tolerance sensitivity.

[0147] Conditional formula (17) specifies the ratio range of the axial thickness d7 of the fourth lens L4 to the total optical length TTL of the imaging optical lens 10, 20, 30, 40, 50, 60, 70. Within this range, it is helpful to achieve a miniaturized design of the imaging optical lens 10, 20, 30, 40, 50, 60, 70.

[0148] The fifth lens L5 has positive or negative refractive power, its object side surface is concave or convex at the paraxial position, and its image side surface is concave at the paraxial position. The image side surface of the fifth lens L5 can also be set to be convex.

[0149] Preferably, the radius of curvature of the object side surface of the fifth lens L5 is R9, the radius of curvature of the image side surface of the fifth lens L5 is R10, the focal length of the fifth lens L5 is f5, the axial thickness of the fifth lens L5 is d9, and the following relationship is satisfied:

[0150] -5.93≤(R9+R10) / (R9-R10)≤6.18 (18)

[0151] -1.97≤f5 / fA≤1.68 (19)

[0152] 0.02≤d9 / TTL≤0.11 (20)

[0153] Conditional expression (18) specifies the shape of the fifth lens L5. Within this range, as the imaging optical lenses 10, 20, 30, 40, 50, 60, and 70 are miniaturized, it is advantageous to correct the problem of axial chromatic aberration.

[0154] Conditional formula (19) specifies the ratio range of the focal length f5 of the fifth lens L5 to the focal length fA of the imaging optical lenses 10, 20, 30, 40, 50, 60, 70 in the first state. Within this range, it is beneficial to reduce system aberrations and facilitate the miniaturization of the lens.

[0155] Conditional formula (20) specifies the ratio of the axial thickness d9 of the fifth lens L5 to the total optical length TTL of the imaging optical lens 10, 20, 30, 40, 50, 60, 70, which helps to achieve a miniaturized design of the imaging optical lens 10, 20, 30, 40, 50, 60, 70.

[0156] In the present invention, the first prism P1 is made of glass, and 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 feasible situations, the first prism P1 and each lens may also be made of other materials.

[0157] In the present invention, an optical element such as an optical filter GF is disposed between the fifth lens L5 and the imaging surface Si, wherein the optical filter GF may be a glass cover plate or an optical filter. In other examples, the optical filter GF may also be disposed at other locations.

[0158] In the present invention, an aperture ST may be further disposed between the first prism P1 and the first lens L1.

[0159] The camera optical lenses 10, 20, 30, 40, 50, 60, 70 of the present invention can realize a large aperture periscope design and have good optical performance.

[0160] The following examples will be used to illustrate the imaging optical lenses 10, 20, 30, 40, 50, 60, and 70 of the present invention. The symbols recorded in each example are as follows: The focal length, the axial distance, the central curvature radius, and the axial thickness are in units of mm.

[0161] TTL: total optical length (the axial distance from the object side of the first prism P1 to the imaging surface Si), in mm;

[0162] BF: back focal length (the axial distance from the image side surface of the fifth lens L5 to the imaging surface Si), in mm.

[0163] Next, the technical solution of the present invention is specifically described with seven implementation modes.

[0164] (First Embodiment)

[0165] The first prism P1 has positive refractive power, its object side surface is convex at the near axis, and its image side surface is concave at the near axis;

[0166] The first lens L1 has negative refractive power, its object side surface is convex at the paraxial position, and its image side surface is concave at the paraxial position;

[0167] The second lens L2 has positive refractive power, and its object side surface is convex at the paraxial position, and its image side surface is convex at the paraxial position;

[0168] The third lens L3 has negative refractive power, its object side surface is convex at the paraxial position, and its image side surface is concave at the paraxial position;

[0169] The fourth lens L4 has positive refractive power, its object side surface is concave at the paraxial position, and its image side surface is convex at the paraxial position;

[0170] The fifth lens L5 has negative refractive power, and its object-side surface is convex at the paraxial position, and its image-side surface is concave at the paraxial position.

[0171] Figure 1a and Figure 1b2 is a schematic diagram of the structure of the imaging optical lens 10 in the first embodiment. The following shows the design data of the imaging optical lens 10 in the first embodiment of the present invention.

[0172] Table 1 lists the curvature radius R of the object side and image side of the first prism P1 to the fifth lens L5 constituting the imaging optical lens 10 in the first embodiment of the present invention, the axial thickness of the lens, the axial distance d between the lenses, the refractive index nd and the Abbe number vd. It should be noted that in this embodiment, the units of distance, radius and thickness are all millimeters (mm).

[0173]

Table 1

[0174]

[0175]

[0176] Among them, dp1 = "dp1-01" + "dp1-02", "dp1-01" = 2.925, "dp1-02" = 2.712.

[0177] Table 2 lists the data of relevant optical parameters of the imaging optical lens 10 in the first state and the second state according to the first embodiment of the present invention.

[0178]

Table 2

[0179] In the first state In the second state f 14.515 12.760 FOV 27.23° 25.13° FNO 2.80 3.17 dp2 2.225 0.345 d6 0.569 2.449

[0180] The meanings of the symbols in the above table are as follows.

[0181] R: The radius of curvature of the optical surface, and the central radius of curvature for lenses;

[0182] ST: aperture;

[0183] Rp1: radius of curvature of the object side surface of the first prism P1;

[0184] Rp2: the radius of curvature of the image side surface of the first prism P1;

[0185] R1: the radius of curvature of the object side surface of the first lens L1;

[0186] R2: the radius of curvature of the image side surface of the first lens L1;

[0187] R3: the radius of curvature of the object-side surface of the second lens L2;

[0188] R4: the radius of curvature of the image side surface of the second lens L2;

[0189] R5: the radius of curvature of the object side surface of the third lens L3;

[0190] R6: radius of curvature of the image-side surface of the third lens L3;

[0191] R7: radius of curvature of the object-side surface of the fourth lens L4;

[0192] R8: the radius of curvature of the image-side surface of the fourth lens L4;

[0193] R9: radius of curvature of the object side surface of the fifth lens L5;

[0194] R10: radius of curvature of the image-side surface of the fifth lens L5;

[0195] R11: radius of curvature of the object side of the optical filter GF;

[0196] R12: radius of curvature of the image side of the optical filter GF;

[0197] d: the axial thickness of the lens and the axial distance between adjacent lenses;

[0198] d0: the axial distance from the aperture ST to the object side of the first prism P1;

[0199] dp1: the sum of the on-axis distance from the object side surface of the first prism P1 to the reflecting surface and the on-axis distance from the reflecting surface to the image side surface of the first prism P1;

[0200] dp1-01: the on-axis distance from the object side surface to the reflecting surface of the first prism P1;

[0201] dp1-02: the on-axis distance from the reflection surface of the first prism P1 to the image side surface;

[0202] dp2: the axial distance from the image side surface of the first prism P1 to the object side surface of the first lens L1;

[0203] d1: axial thickness of the first lens L1;

[0204] d2: the axial distance from the image side surface of the first lens L1 to the object side surface of the second lens L2;

[0205] d3: axial thickness of the second lens L2;

[0206] d4: the axial distance from the image side surface of the second lens L2 to the object side surface of the third lens L3;

[0207] d5: axial thickness of the third lens L3;

[0208] d6: the axial distance from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;

[0209] d7: axial thickness of the fourth lens L4;

[0210] d8: the axial distance from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L5;

[0211] d9: axial thickness of the fifth lens L5;

[0212] d10: the axial distance from the image side surface of the fifth lens L5 to the object side surface of the optical filter GF;

[0213] d11: axial thickness of the optical filter GF;

[0214] d12: the axial distance from the image side of the optical filter GF to the imaging surface Si;

[0215] nd: refractive index of d-line;

[0216] nd1: refractive index of the first prism P1;

[0217] nd2: refractive index of the first lens L1;

[0218] nd3: refractive index of the second lens L2;

[0219] nd4: refractive index of the third lens L3;

[0220] nd5: the refractive index of the fourth lens L4;

[0221] nd6: the refractive index of the fifth lens L5;

[0222] ndg: refractive index of the optical filter GF;

[0223] vd: Abbe number;

[0224] vd1: Abbe number of the first prism P1;

[0225] vd2: Abbe number of the first lens L1;

[0226] vd3: Abbe number of the second lens L2;

[0227] vd4: Abbe number of the third lens L3;

[0228] vd5: Abbe number of the fourth lens L4;

[0229] vd6: Abbe number of the fifth lens L5;

[0230] vdg: Abbe number of the optical filter GF;

[0231] Table 3 shows the cone coefficient k and the aspherical coefficient of the imaging optical lens 10 .

[0232]

Table 3

[0233]

[0234] It should be noted that the aspheric surface of each lens in this embodiment uses the aspheric surface shown in the following formula (21), but the specific form of the following formula (22) is only an example and is actually not limited to the aspheric polynomial form represented by formula (21).

[0235] 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 (twenty one)

[0237] Wherein, k is the cone coefficient, A4, A6, A8, A10, A12, A14, A16, A18, A20 are aspheric coefficients, c is the curvature at the center of the optical surface, r is the perpendicular distance between the point on the aspheric curve and the optical axis, and z is the aspheric depth (the perpendicular distance between the point on the aspheric surface that is r away from the optical axis and the tangent plane tangent to the vertex on the aspheric optical axis).

[0238] Figure 2a and Figure 2b A schematic diagram showing astigmatism, field curvature and distortion of light having a wavelength of 546 nanometers after passing through the camera optical lens 10 of the first embodiment; Figure 3a and Figure 3b A schematic diagram showing axial aberrations of light having wavelengths of 436 nanometers, 486 nanometers, 546 nanometers, 588 nanometers, and 656 nanometers after passing through the camera optical lens 10 of the first embodiment; Figure 4a and Figure 4b A schematic diagram of magnification chromatic aberration of light with wavelengths of 436 nanometers, 486 nanometers, 546 nanometers, 588 nanometers, and 656 nanometers after passing through the imaging optical lens 10 of the first embodiment is shown.

[0239] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 10 in the first state is 5.184 mm, the full field of view image height IH is 3.584 mm, and the field of view angle FOV is 27.23°. The camera optical lens 10 can realize a large aperture periscope design, has good optical performance, and its on-axis and off-axis chromatic aberrations are fully corrected, and has excellent optical characteristics.

[0240] (Second Embodiment)

[0241] The first prism P1 has positive refractive power, its object side surface is convex at the near axis, and its image side surface is flat at the near axis;

[0242] The first lens L1 has negative refractive power, its object side surface is convex at the paraxial position, and its image side surface is concave at the paraxial position;

[0243] The second lens L2 has positive refractive power, and its object side surface is convex at the paraxial position, and its image side surface is convex at the paraxial position;

[0244] The third lens L3 has positive refractive power, its object side surface is concave at the paraxial position, and its image side surface is convex at the paraxial position;

[0245] The fourth lens L4 has positive refractive power, its object side surface is concave at the paraxial position, and its image side surface is convex at the paraxial position;

[0246] The fifth lens L5 has negative refractive power, and its object-side surface is convex at the paraxial position, and its image-side surface is concave at the paraxial position.

[0247] Figure 5a and Figure 5b 2 is a schematic diagram of the structure of the imaging optical lens 20 in the second embodiment. The meanings of the symbols in the second embodiment are the same as those in the first embodiment.

[0248] Table 4 shows design data of the imaging optical lens 30 according to the third embodiment.

[0249]

Table 4

[0250]

[0251]

[0252] Among them, dp1 = "dp1-01" + "dp2-02", "dp1-01" = 3.846, "dp1-02" = 3.500.

[0253] Table 5 lists the data of the relevant optical parameters of the imaging optical lens 20 in the second embodiment of the present invention in the first state and the second state respectively.

[0254]

Table 5

[0255] In the first state In the second state f 19.110 17.650 FOV 20.90° 19.13° FNO 2.80 3.14 dp2 1.277 0.026 d6 0.327 1.578

[0256] Table 6 shows the cone coefficient k and the aspherical coefficient of the imaging optical lens 20 .

[0257]

Table 6

[0258]

[0259]

[0260] Figure 6a and Figure 6b A schematic diagram showing astigmatism, field curvature and distortion of light having a wavelength of 546 nanometers after passing through the imaging optical lens 20 of the second embodiment; Figure 7a and Figure 7b A schematic diagram showing axial aberrations of light having wavelengths of 436 nanometers, 486 nanometers, 546 nanometers, 588 nanometers, and 656 nanometers after passing through the imaging optical lens 20 of the second embodiment; Figure 8a and Figure 8b A schematic diagram of magnification chromatic aberration of light with wavelengths of 436 nanometers, 486 nanometers, 546 nanometers, 588 nanometers, and 656 nanometers after passing through the imaging optical lens 20 of the second embodiment is shown.

[0261] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 20 in the first state is 6.825 mm, the full field of view image height IH is 3.584 mm, the field of view angle FOV is 20.90°, and the camera optical lens 30 can realize a large aperture periscope design, has good optical performance, its on-axis and off-axis chromatic aberrations are fully corrected, and has excellent optical characteristics.

[0262] (Third Embodiment)

[0263] The first prism P1 has positive refractive power, its object side surface is convex at the near axis, and its image side surface is concave at the near axis;

[0264] The first lens L1 has negative refractive power, its object side surface is convex at the paraxial position, and its image side surface is concave at the paraxial position;

[0265] The second lens L2 has positive refractive power, and its object side surface is convex at the paraxial position, and its image side surface is convex at the paraxial position;

[0266] The third lens L3 has negative refractive power, its object side surface is concave at the paraxial position, and its image side surface is convex at the paraxial position;

[0267] The fourth lens L4 has negative refractive power, and its object side surface is convex at the paraxial position, and its image side surface is concave at the paraxial position;

[0268] The fifth lens L5 has negative refractive power, and its object-side surface is convex at the paraxial position, and its image-side surface is concave at the paraxial position.

[0269] Figure 9a and Figure 9b 3 is a schematic diagram of the structure of the imaging optical lens 30 in the third embodiment. The meanings of the symbols in the third embodiment are the same as those in the first embodiment.

[0270] Table 7 shows design data of the imaging optical lens 30 according to the third embodiment.

[0271]

Table 7

[0272]

[0273]

[0274] Among them, dp1 = "dp1-01" + "dp1-02", "dp1-01" = 3.540, "dp1-02" = 3.177.

[0275] Table 8 lists the data of relevant optical parameters of the camera optical lens 30 in the third embodiment of the present invention in the first state and the second state respectively.

[0276]

Table 8

[0277] In the first state In the second state f 17.218 14.089 FOV 23.11° 20.97° FNO 2.80 3.17 dp2 2.889 0.963 d6 0.306 2.232

[0278] Table 9 shows the cone coefficient k and the aspherical coefficient of the imaging optical lens 30 .

[0279]

Table 9

[0280]

[0281]

[0282] Fig.10a and Fig.10b A schematic diagram showing astigmatism field curvature and distortion of light having a wavelength of 546 nanometers after passing through the camera optical lens 30 of the third embodiment; Fig.11a and Fig.11b A schematic diagram showing axial aberrations of light having wavelengths of 436 nanometers, 486 nanometers, 546 nanometers, 588 nanometers, and 656 nanometers after passing through the camera optical lens 30 of the third embodiment; Fig.12a and Figure 12b A schematic diagram of magnification chromatic aberration of light with wavelengths of 436 nanometers, 486 nanometers, 546 nanometers, 588 nanometers, and 656 nanometers after passing through the imaging optical lens 30 of the third embodiment is shown.

[0283] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 30 in the first state is 6.149 mm, the full field of view image height IH is 3.584 mm, and the field of view angle FOV is 23.11°. The camera optical lens 30 can achieve a large aperture periscope design, has good optical performance, and its on-axis and off-axis chromatic aberrations are fully corrected, and has excellent optical characteristics.

[0284] (Fourth Embodiment)

[0285] The first prism P1 has positive refractive power, its object side surface is convex at the near axis, and its image side surface is concave at the near axis;

[0286] The first lens L1 has negative refractive power, its object side surface is convex at the paraxial position, and its image side surface is concave at the paraxial position;

[0287] The second lens L2 has positive refractive power, and its object side surface is convex at the paraxial position, and its image side surface is convex at the paraxial position;

[0288] The third lens L3 has negative refractive power, its object side surface is convex at the paraxial position, and its image side surface is concave at the paraxial position;

[0289] The fourth lens L4 has positive refractive power, its object side surface is convex at the paraxial position, and its image side surface is concave at the paraxial position;

[0290] The fifth lens L5 has negative refractive power, and its object-side surface is concave at the paraxial position, and its image-side surface is concave at the paraxial position.

[0291] Fig.13a and Fig.13b 3 is a schematic diagram of the structure of the imaging optical lens 40 in the fourth embodiment. The meanings of the symbols in the fourth embodiment are the same as those in the first embodiment.

[0292] Table 10 shows design data of the imaging optical lens 40 according to the fourth embodiment.

[0293]

Table 10

[0294]

[0295] Among them, dp1 = "dp1-01" + "dp1-02", "dp1-01" = 4.619, "dp1-02" = 4.259.

[0296] Table 11 lists the data of relevant optical parameters of the imaging optical lens 40 in the fourth embodiment of the present invention in the first state and the second state respectively.

[0297]

Table 11

[0298] In the first state In the second state f 16.587 14.120 FOV 23.91° 21.71° FNO 2.80 3.13 dp2 3.165 1.234 d6 0.500 2.431

[0299] Table 12 shows the cone coefficient k and the aspherical coefficient of the imaging optical lens 40 .

[0300]

Table 12

[0301]

[0302]

[0303] Fig.14a and Fig.14b A schematic diagram showing astigmatism, field curvature and distortion of light having a wavelength of 546 nanometers after passing through the imaging optical lens 40 of the fourth embodiment; Fig.15a and Fig.15b A schematic diagram showing axial aberrations of light having wavelengths of 436 nanometers, 486 nanometers, 546 nanometers, 588 nanometers, and 656 nanometers after passing through the imaging optical lens 40 of the fourth embodiment; Fig.16a and Fig.16b A schematic diagram of magnification chromatic aberration of light with wavelengths of 436 nanometers, 486 nanometers, 546 nanometers, 588 nanometers, and 656 nanometers after passing through the imaging optical lens 40 of the fourth embodiment is shown.

[0304] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 40 in the first state is 5.924 mm, the full field of view image height IH is 3.584 mm, and the field of view angle FOV is 23.91°. The camera optical lens 40 can realize a large aperture periscope design, has good optical performance, and its on-axis and off-axis chromatic aberrations are fully corrected, and has excellent optical characteristics.

[0305] (Fifth Embodiment)

[0306] The first prism P1 has positive refractive power, its object side surface is convex at the near axis, and its image side surface is concave at the near axis;

[0307] The first lens L1 has negative refractive power, its object side surface is convex at the paraxial position, and its image side surface is concave at the paraxial position;

[0308] The second lens L2 has positive refractive power, and its object side surface is convex at the paraxial position, and its image side surface is convex at the paraxial position;

[0309] The third lens L3 has positive refractive power, its object side surface is concave at the paraxial position, and its image side surface is convex at the paraxial position;

[0310] The fourth lens L4 has negative refractive power, and its object side surface is convex at the paraxial position, and its image side surface is concave at the paraxial position;

[0311] The fifth lens L5 has negative refractive power, and its object-side surface is convex at the paraxial position, and its image-side surface is concave at the paraxial position.

[0312] Fig.17a and Fig.17b 3 is a schematic diagram of the structure of the imaging optical lens 50 in the fifth embodiment. The meanings of the symbols in the fifth embodiment are the same as those in the first embodiment.

[0313] Table 13 shows design data of the imaging optical lens 50 according to the fifth embodiment.

[0314]

Table 13

[0315]

[0316] Among them, dp1 = "dp1-01" + "dp1-02", "dp1-01" = 3.406, "dp1-02" = 3.146.

[0317] Table 14 lists the data of relevant optical parameters of the imaging optical lens 50 in the fifth embodiment of the present invention in the first state and the second state respectively.

[0318]

Table 14

[0319]

[0320]

[0321] Table 15 shows the cone coefficient k and the aspherical coefficient of the imaging optical lens 50.

[0322]

Table 15

[0323]

[0324] Fig.18a and Fig.18b A schematic diagram showing astigmatism, field curvature and distortion of light having a wavelength of 546 nanometers after passing through the imaging optical lens 50 of the fifth embodiment; Fig.19a and Fig.19b A schematic diagram showing axial aberrations of light having wavelengths of 436 nanometers, 486 nanometers, 546 nanometers, 588 nanometers, and 656 nanometers after passing through the imaging optical lens 50 of the fifth embodiment; Fig.20a and Fig.20b A schematic diagram of magnification chromatic aberration of light with wavelengths of 436 nanometers, 486 nanometers, 546 nanometers, 588 nanometers, and 656 nanometers after passing through the imaging optical lens 50 of the fifth embodiment is shown.

[0325] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 50 in the first state is 5.184 mm, the full field of view image height IH is 3.584 mm, and the field of view angle FOV is 27.19°. The camera optical lens 50 can realize a large aperture periscope design, has good optical performance, and its on-axis and off-axis chromatic aberrations are fully corrected, and has excellent optical characteristics.

[0326] (Sixth Embodiment)

[0327] The first prism P1 has positive refractive power, and its object side surface is convex at the near axis, and its image side surface is convex at the near axis;

[0328] The first lens L1 has negative refractive power, its object side surface is convex at the paraxial position, and its image side surface is concave at the paraxial position;

[0329] The second lens L2 has positive refractive power, its object side surface is convex at the paraxial position, and its image side surface is concave at the paraxial position;

[0330] The third lens L3 has negative refractive power, its object side surface is convex at the paraxial position, and its image side surface is concave at the paraxial position;

[0331] The fourth lens L4 has negative refractive power, its object side surface is concave at the paraxial position, and its image side surface is convex at the paraxial position;

[0332] The fifth lens L5 has positive refractive power, and its object-side surface is convex at the paraxial position, and its image-side surface is concave at the paraxial position.

[0333] Fig.21a and Figure 21b 2 is a schematic diagram of the structure of the imaging optical lens 60 in the sixth embodiment. The meanings of the symbols in the sixth embodiment are the same as those in the first embodiment.

[0334] Table 16 shows design data of the imaging optical lens 60 according to the sixth embodiment.

[0335]

Table 16

[0336]

[0337] Among them, dp1 = "dp1-01" + "dp1-02", "dp1-01" = 4.172, "dp1-02" = 4.142.

[0338] Table 17 lists the data of relevant optical parameters of the imaging optical lens 60 in the sixth embodiment of the present invention in the first state and the second state respectively.

[0339]

Table 17

[0340] In the first state In the second state f 15.724 13.040 FOV 25.32° 22.45° FNO 2.95 3.02 d0 10.744 9.331 dp2 1.616 0.203 d6 2.311 3.724

[0341] Table 18 shows the cone coefficient k and the aspherical coefficient of the imaging optical lens 60.

[0342]

Table 18

[0343]

[0344]

[0345] Fig.22a and Figure 22b FIG. 4 is a schematic diagram showing the astigmatism field curvature and distortion of light having a wavelength of 550 nanometers after passing through the imaging optical lens 60 of the sixth embodiment; Fig.23a and Figure 23b A schematic diagram showing axial aberrations of light having wavelengths of 430 nanometers, 470 nanometers, 510 nanometers, 550 nanometers, 610 nanometers, and 650 nanometers after passing through the camera optical lens 60 of the sixth embodiment;

[0346] Fig.24a and Figure 24b A schematic diagram of magnification chromatic aberration of light with wavelengths of 430 nanometers, 470 nanometers, 510 nanometers, 550 nanometers, 610 nanometers, and 650 nanometers after passing through the imaging optical lens 60 of the sixth embodiment is shown.

[0347] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 60 in the first state is 5.324 mm, the full field of view image height IH is 3.584 mm, and the field of view angle FOV is 25.32°. The camera optical lens 60 can achieve a large aperture periscope design, has good optical performance, and its on-axis and off-axis chromatic aberrations are fully corrected, and has excellent optical characteristics.

[0348] (Seventh Embodiment)

[0349] The first prism P1 has positive refractive power, and its object side surface is convex at the near axis, and its image side surface is convex at the near axis;

[0350] The first lens L1 has negative refractive power, its object side surface is convex at the paraxial position, and its image side surface is concave at the paraxial position;

[0351] The second lens L2 has positive refractive power, its object side surface is convex at the paraxial position, and its image side surface is concave at the paraxial position;

[0352] The third lens L3 has negative refractive power, its object side surface is convex at the paraxial position, and its image side surface is concave at the paraxial position;

[0353] The fourth lens L4 has negative refractive power, its object side surface is concave at the paraxial position, and its image side surface is convex at the paraxial position;

[0354] The fifth lens L5 has positive refractive power, and its object-side surface is convex at the paraxial position, and its image-side surface is concave at the paraxial position.

[0355] Fig.25a and Fig.25b 2 is a schematic diagram of the structure of the imaging optical lens 70 in the seventh embodiment. The meanings of the symbols in the seventh embodiment are the same as those in the first embodiment.

[0356] Table 19 shows design data of the imaging optical lens 70 according to the seventh embodiment.

[0357]

Table 19

[0358]

[0359]

[0360] Among them, dp1 = "dp1-01" + "dp1-02", "dp1-01" = 5.017, "dp1-02" = 4.983.

[0361] Table 20 lists the data of relevant optical parameters of the imaging optical lens 70 of the seventh embodiment of the present invention in the first state and the second state respectively.

[0362]

Table 20

[0363] In the first state In the second state f 18.278 15.156 FOV 21.85° 19.82° FNO 2.95 3.16 d0 13.551 11.621 dp2 3.159 1.230 d6 1.346 3.275

[0364] Table 21 shows the cone coefficient k and aspherical coefficient of the imaging optical lens 70.

[0365]

Table 21

[0366]

[0367]

[0368] Fig.26a and Figure 26b FIG. 4 is a schematic diagram showing the astigmatism field curvature and distortion of light having a wavelength of 550 nanometers after passing through the imaging optical lens 70 of the seventh embodiment; Fig.27a and Figure 27b Schematic diagram showing axial aberrations of light with wavelengths of 430 nanometers, 470 nanometers, 510 nanometers, 550 nanometers, 610 nanometers, and 650 nanometers after passing through the camera optical lens 70 of the seventh embodiment;

[0369] Fig.28a and Fig.28b A schematic diagram of magnification chromatic aberration of light with wavelengths of 430 nanometers, 470 nanometers, 510 nanometers, 550 nanometers, 610 nanometers, and 650 nanometers after passing through the imaging optical lens 70 of the seventh embodiment is shown.

[0370] In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 70 in the first state is 6.195 mm, the full field of view image height IH is 3.584 mm, and the field of view angle FOV is 21.85°. The camera optical lens 70 can realize a large aperture periscope design and has good optical performance. Its on-axis and off-axis chromatic aberrations are fully corrected and have excellent optical characteristics.

[0371] Table 22 below shows the values ​​corresponding to the parameters specified in the conditional expressions of various numerical values ​​in each of the first, second, third, fourth, fifth, sixth and seventh embodiments.

[0372]

Table 22

[0373]

[0374]

[0375] The above is a detailed introduction to the camera optical lens provided by the embodiment of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above implementation methods is only used to help understand the ideas of the present invention. There may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A camera optical lens, characterized in that: The camera optical lens is composed of a first prism with positive refractive power, a first lens with negative refractive power, a second lens with positive refractive power, a third lens, a fourth lens, and a fifth lens, which are arranged in sequence from the object side to the image side; a reflecting surface is arranged between the object side surface and the image side surface of the first prism, the first lens, the second lens and the third lens form a first lens group, the fourth lens and the fifth lens form a second lens group, the first lens group is movable and adjustable along the optical axis of the camera optical lens, so that the camera optical lens switches between a first state and a second state, wherein the focal length of the camera optical lens in the first state is the largest, and the focal length of the camera optical lens in the second state is the smallest; 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 radius of curvature of the object side of the first prism is Rp1, the radius of curvature of the image side of the first prism is Rp2, the focal length of the first lens is f1, the back focal length of the camera optical lens is BF, the total optical length of the camera optical lens is TTL, and the following relationship is satisfied: 4.00≤fA / IH≤5.50; -1.20≤Rp1 / Rp2≤1.10; -2.00≤f1 / fA≤-0.30; 0.11≤BF / TTL≤0.

33.

2. The imaging optical lens according to claim 1, characterized in that: The camera optical lens satisfies the following relationship: 4.00≤fA / IH≤5.

34.

3. The imaging optical lens according to claim 1, characterized in that: The radius of curvature of the object side of the first lens is R1, and the radius of curvature of the image side of the first lens is R2, and the following relationship is satisfied: 2.30≤(R1+R2) / (R1-R2)≤4.

60.

4. The imaging optical lens according to claim 1, wherein: The object side surface of the first prism is a curved surface and is convex at the near axis, the focal length of the first prism is fp1, the sum of the on-axis distance from the object side surface of the first prism to the reflecting surface and the on-axis distance from the reflecting surface to the image side surface of the first prism is dp1, and the following relationship is satisfied: 1.41≤fp1 / fA≤11.18; 0.26≤dp1 / TTL≤0.

34.

5. The imaging optical lens according to claim 1, wherein: The object side surface of the first lens is convex at the paraxial position, and the image side surface is concave at the paraxial position; the axial thickness of the first lens is d1, and the following relationship is satisfied: 0.018≤d1 / TTL≤0.

037.

6. The imaging optical lens according to claim 1, characterized in that: The object side surface of the second lens is convex at the paraxial position; 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, the focal length of the second lens is f2, the axial thickness of the second lens is d3, and the following relationship is satisfied: -1.25≤(R3+R4) / (R3-R4)≤0.24; 0.19≤f2 / fA≤0.58; 0.04≤d3 / TTL≤0.

08.

7. The imaging optical lens according to claim 1, characterized in that: The radius of curvature of the object side of the third lens is R5, the radius of curvature of the image side of the third lens is R6, the focal length of the third lens is f3, the axial thickness of the third lens is d5, and the following relationship is satisfied: -111.10≤(R5+R6) / (R5-R6)≤149.30; -11.10≤f3 / fA≤129.47; 0.015≤d5 / TTL≤0.

106.

8. The imaging optical lens according to claim 1, wherein: The radius of curvature of the object side of the fourth lens is R7, the radius of curvature of the image side of the fourth lens is R8, the focal length of the fourth lens is f4, the axial thickness of the fourth lens is d7, and the following relationship is satisfied: -3.93≤(R7+R8) / (R7-R8)≤6104.00; -205.84≤f4 / fA≤45.03; 0.06≤d7 / TTL≤0.

12.

9. The imaging optical lens according to claim 1, characterized in that: The image side surface of the fifth lens is concave at the paraxial position; the curvature radius of the object side surface of the fifth lens is R9, the curvature radius of the image side surface of the fifth lens is R10, the focal length of the fifth lens is f5, the axial thickness of the fifth lens is d9, and the following relationship is satisfied: -5.93≤(R9+R10) / (R9-R10)≤6.18; -1.97≤f5 / fA≤1.68; 0.02≤d9 / TTL≤0.

11.

10. The imaging optical lens according to claim 1, characterized in that: The first prism is made of glass.

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