Shooting optical lens

Abstract

The embodiment of the invention relates to the technical field of optics, and discloses a camera shooting optical lens which is composed of a first prism, a first lens group and a second lens group. The first lens group comprises a first lens and a second lens; the second lens group comprises a third lens, a fourth lens and a fifth lens; the first lens group can be moved and adjusted: 4.00 < = fA / IH < = 4.60; -4.00 < = Rp1 / Rp2 < =-0.14; 0.30 < = d1 / d3 < = 1.20; -2.90 < = (R7 + R8) / (R7-R8) < =-1.20. The five-piece lens is divided into a first lens group and a second lens group, and the first lens group moves to focus, so that a focusing mode of internal focusing of the optical lens is realized; the ratio of the focal length to the image height of the optical lens in the first state is set, and the optical lens has a relatively long focal length under the condition that the image height is fixed, so that the magnification of the optical lens can be improved; the concave-convex shapes of the first prism and the fourth lens are arranged, so that the deflection degree of light passing through the lenses can be relieved, and the aberration can be well reduced; the thickness of the first lens and the thickness of the second lens are reasonably distributed, so that the total optical length can be compressed.

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, the development trend of electronic products nowadays is to have good functions and thin and short appearance. Miniaturized cameras with good imaging quality have become the mainstream in the current market. Among them, internal focus cameras are gradually being developed and applied to mobile phone cameras because of their high stability, fast zoom, good cleanliness and ability to overcome the disadvantages of external focus that is easy to wear.

[0003] In addition, telephoto cameras can meet consumers' needs for shooting specific targets. The total optical length of traditional telephoto cameras is too large and does not meet the design requirements of thin and light smartphones. The periscope telephoto camera design can significantly shorten the total 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 compress the total optical length of the optical lens, meet the requirements of mobile focusing and realize a periscope design with a long focal length, and has good optical performance.

[0005] To solve the above technical problems, an embodiment 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 with negative refractive power, a fourth lens with positive refractive power and a fifth lens with negative refractive power, which are arranged in sequence from the object side to the image side; a reflecting surface is provided between the object side surface and the image side surface of the first prism; the first lens and the second lens are a first lens group, and the third lens, the fourth lens and the fifth lens are 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 camera optical lens is in the first state 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 surface of the first prism is Rp1, the radius of curvature of the image side surface of the first prism is Rp2, the axial thickness of the first lens is d1, the axial thickness of the second lens is d3, the radius of curvature of the object side surface of the fourth lens is R7, the radius of curvature of the image side surface of the fourth lens is R8, and the following relationships are satisfied: 4.00≤fA / IH≤4.60; -4.00≤Rp1 / Rp2≤-0.14; 0.30≤d1 / d3≤1.20; -2.90≤(R7+R8) / (R7-R8)≤-1.20.

[0006] Optionally, the camera optical lens satisfies the following relationship: 4.38≤fA / IH≤4.53; -3.90≤Rp1 / Rp2≤-0.14; -2.90≤(R7+R8) / (R7-R8)≤-1.19.

[0007] Optionally, the object side surface of the first prism is convex at the near axis, and the image side surface of the first prism is convex at the near axis; the focal length of the first prism is fp1, and satisfies the following relationship: 0.92≤fp1 / fA≤1.23.

[0008] Optionally, 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 focal length of the first lens is f1, the radius of curvature of the object side surface of the first lens is R1, the radius of curvature of the image side surface of the first lens is R2, the total optical length of the camera optical lens is TTL, and satisfies the following relationship: -1.012≤f1 / fA≤-0.943; 3.33≤(R1+R2) / (R1-R2)≤4.00; 0.034≤d1 / TTL≤0.061.

[0009] Optionally, 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 focal length of the second lens is f2, the radius of curvature of the object side surface of the second lens is R3, the radius of curvature of the image side surface of the second lens is R4, the total optical length of the camera optical lens is TTL, and satisfies the following relationship: 0.412≤f2 / fA≤0.455; -0.094≤(R3+R4) / (R3-R4)≤-0.038; 0.050≤d3 / TTL≤0.115.

[0010] Optionally, 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 focal length of the third lens is f3, the radius of curvature of the object side surface of the third lens is R5, the radius of curvature of the image side surface of the third lens is R6, the axial thickness of the third lens is d5, the total optical length of the camera optical lens is TTL, and the following relationships are satisfied: -0.475≤f3 / fA≤-0.450; -0.58≤(R5+R6) / (R5-R6)≤-0.44; 0.019≤d5 / TTL≤0.095.

[0011] Optionally, the object side surface of the fourth lens is convex at the paraxial position, and the image side surface of the fourth lens is concave at the paraxial position; the focal length of the fourth lens is f4, the axial thickness of the fourth lens is d7, the total optical length of the camera optical lens is TTL, and the following relationship is satisfied: 0.98≤f4 / fA≤1.15; 0.041≤d7 / TTL≤0.103.

[0012] Optionally, the on-axis thickness of the third lens is d5, the on-axis thickness of the fourth lens is d7, and the following relationship is satisfied: 0.25≤d5 / d7≤1.15.

[0013] Optionally, the camera optical lens satisfies the following relationship: 0.29≤d5 / d7≤1.15.

[0014] Optionally, the object side surface of the fifth lens is convex at the paraxial position, and the image side surface of the fifth lens is concave at the paraxial position; the focal length of the fifth lens is f5, the radius of curvature of the object side surface of the fifth lens is R9, the radius of curvature of the image side surface of the fifth lens is R10, and the following relationship is satisfied: -1.93≤f5 / fA≤-1.29; 4.31≤(R9+R10) / (R9-R10)≤6.33.

[0015] Optionally, the first prism is made of glass.

[0016] The beneficial effects of the present invention are as follows: by dividing a five-piece lens into a first lens group and a second lens group, the first lens group is moved for focusing, thereby realizing a focusing method of focusing within an optical lens; by setting a ratio of a focal length to an image height of the optical lens in a first state, the optical lens has a longer focal length when the image height is fixed, which helps to improve the magnification of the optical lens; by setting the concave-convex shapes of the first prism and the fourth lens, it is helpful to alleviate the degree of deflection of light passing through the lens, and can well reduce aberrations; by reasonably allocating the thicknesses of the first lens and the second lens, it is helpful to compress the total optical length of the optical lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0018] Figure 1a is a schematic structural diagram of the camera optical lens of the first embodiment of the present invention in the first state;

[0019] Figure 1b is a schematic structural diagram of the camera optical lens of the first embodiment of the present invention in the second state;

[0020] Figure 2a , Figure 3a , Figure 4a They are Figure 1a Schematic diagram of field curvature and distortion, schematic diagram of axial aberration, and schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0021] Figure 2b , Figure 3b , Figure 4b They are Figure 1b Schematic diagram of field curvature and distortion, schematic diagram of axial aberration, and schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0022] 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;

[0023] Figure 5b is a schematic structural diagram of the imaging optical lens of the second embodiment of the present invention in the second state;

[0024] Figure 6a , Figure 7a , Figure 8a They are Figure 5a Schematic diagram of field curvature and distortion, schematic diagram of axial aberration, and schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0025] Figure 6b , Figure 7b , Figure 8b They are Figure 5b Schematic diagram of field curvature and distortion, schematic diagram of axial aberration, and schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0026] 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;

[0027] 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;

[0028] Fig.10a , Fig.11a , Fig.12a They are Figure 9a Schematic diagram of field curvature and distortion, schematic diagram of axial aberration, and schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0029] Fig.10b , Fig.11b , Figure 12b They are Figure 9b Schematic diagram of field curvature and distortion, schematic diagram of axial aberration, and schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0030] 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;

[0031] 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;

[0032] Fig.14a , Fig.15a , Fig.16a They are Fig.13a Schematic diagram of field curvature and distortion, schematic diagram of axial aberration, and schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0033] Fig.14b , Fig.15b , Fig.16b They are Fig.13b Schematic diagram of field curvature and distortion, schematic diagram of axial aberration, and schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0034] 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;

[0035] 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;

[0036] Fig.18a , Fig.19a , Fig.20a They are Fig.17a Schematic diagram of field curvature and distortion, schematic diagram of axial aberration, and schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0037] Fig.18b , Fig.19b , Fig.20b They are Fig.17b Schematic diagram of field curvature and distortion, schematic diagram of axial aberration, and schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0038] 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;

[0039] 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;

[0040] Fig.22a , Fig.23a , Fig.24a They are Fig.21a Schematic diagram of field curvature and distortion, schematic diagram of axial aberration, and schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0041] Figure 22b , Figure 23b , Figure 24b They are Figure 21b The schematic diagrams of field curvature and distortion, axial aberration, and magnification chromatic aberration of the camera optical lens are shown. DETAILED DESCRIPTION

[0042] 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.

[0043] In the embodiments of the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction.

[0044] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0045] In addition, the terms "installed", "set", "provided with", "opened", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0047] See also Figure 1a , Figure 1b , Figure 5a , Figure 5b , Figure 9a , Figure 9b , Fig.13a , Fig.13b , Fig.17a , Fig.17b , Fig.21a and Figure 21bThe technical solution of the present invention provides an imaging optical lens 10, 20, 30, 40, 50, 60, which is composed of a first prism P1 with positive refractive power, a first lens L1 with negative refractive power, a second lens L2 with positive refractive power, a third lens L3 with negative refractive power, a fourth lens L4 with positive refractive power, and a fifth lens L5 with negative refractive power, which are arranged in sequence from the object side to the image side; a reflecting surface is provided between the object side surface and the image side surface of the first prism P1; the first lens L1 and the second lens L2 are provided with a reflecting surface; Mirror L2 is the first lens group, and the third lens L3, the fourth lens L4 and the fifth lens L5 are the second lens group; the first lens group is capable of being moved and adjusted along the optical axis of the camera optical lens 10, 20, 30, 40, 50, 60, so that the camera optical lens 10, 20, 30, 40, 50, 60 can be switched between the first state and the second state, wherein the focal length of the camera optical lens 10, 20, 30, 40, 50, 60 is the largest in the first state, and the focal length of the camera optical lens 10, 20, 30, 40, 50, 60 is the smallest in the second state.

[0048] The focal length of the camera optical lenses 10, 20, 30, 40, 50, and 60 in the first state is fA, the image height of the camera optical lenses 10, 20, 30, 40, 50, and 60 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 axial thickness of the first lens L1 is d1, the axial thickness of the second lens L2 is d3, the radius of curvature of the object side surface of the fourth lens L4 is R7, and the radius of curvature of the image side surface of the fourth lens L4 is R8, and the following relationship is satisfied:

[0049] 4.00≤fA / IH≤4.60 (1)

[0050] -4.00≤Rp1 / Rp2≤-0.14 (2)

[0051] 0.30≤d1 / d3≤1.20 (3)

[0052] -2.90≤(R7+R8) / (R7-R8)≤-1.20 (4)

[0053] Among them, the camera optical lenses 10, 20, 30, 40, 50, and 60 are periscope optical lenses with five lenses, and the camera optical lenses 10, 20, 30, 40, 50, and 60 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.

[0054] The five-lens camera optical lenses 10, 20, 30, 40, 50, and 60 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-lens lens is divided into two groups (two lenses + three lenses), 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.

[0055] The first lens group is the front group, the first lens group is composed of the first lens L1 and the second lens L2, 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 second lens L2. The second lens group is the rear group, the second lens group is composed of the third lens L3, 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 third lens L3, and the image side surface of the second lens group is the image side surface of the fifth lens L5.

[0056] 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, 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 can be changed, so that the camera optical lens 10, 20, 30, 40, 50, 60 has a good imaging effect in both the first state and the second state. Among them, the first state refers to the state where the focal length of the camera optical lens 10, 20, 30, 40, 50, 60 is the largest, and the second state refers to the state where the focal length of the camera optical lens 10, 20, 30, 40, 50, 60 is the smallest. For example, the first state may be a telephoto state, or a state where the object distance is infinite; the second state may be a short focal state or a macro state, or a state where the object distance is 200 mm. In this way, the camera optical lenses 10, 20, 30, 40, 50, 60 can focus by moving the front group, thereby realizing the focusing method of focusing within the camera optical lenses 10, 20, 30, 40, 50, 60.

[0057] Conditional formula (1) specifies the range of the ratio of the focal length fA to the image height IH of the imaging optical lens 10, 20, 30, 40, 50, 60 in the first state. Within the range defined by conditional formula (1), the imaging optical lens 10, 20, 30, 40, 50, 60 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. More preferably, 4.38≤fA / IH≤4.53.

[0058] Conditional expression (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 concave-convex shapes of the object side surface of the first prism P1 and the image side surface of the first prism P1. Within the range defined by conditional expression (2), it is helpful to alleviate the degree of deflection of light passing through the first prism P1. More preferably, -3.90≤Rp1 / Rp2≤-0.14.

[0059] The conditional expression (3) specifies the ratio range of the axial thickness d1 of the first lens L1 to the axial thickness d3 of the second lens L2. Within the range defined by the conditional expression (3), the thicknesses of the first lens L1 and the second lens L2 can be reasonably distributed, which helps to shorten the total optical length of the camera optical lenses 10, 20, 30, 40, 50, 60.

[0060] The conditional expression (4) specifies the concavoconvex shapes of the object side surface and the image side surface of the fourth lens L4. Within the range defined by the conditional expression (4), it is beneficial to alleviate the degree of deflection of light passing through the fourth lens L4, and can effectively reduce aberrations. More preferably, -2.90≤(R7+R8) / (R7-R8)≤-1.19.

[0061] The beneficial effects of the present invention are as follows: by dividing the five-piece lens into a first lens group and a second lens group, the first lens group is moved for focusing, thereby realizing a focusing mode of focusing within the camera optical lens 10, 20, 30, 40, 50, 60; by setting the ratio of the focal length to the image height of the camera optical lens 10, 20, 30, 40, 50, 60 in the first state, the camera optical lens 10, 20, 30, 40, 50, 60 has a longer focal length when the image height is fixed, which helps to improve the magnification of the camera optical lens 10, 20, 30, 40, 50, 60; by setting the concave-convex shapes of the first prism P1 and the fourth lens L4, it is helpful to alleviate the degree of deflection of light passing through the first prism P1 and the fourth lens L4, and can well reduce aberrations; by reasonably allocating the thickness of the first lens L1 and the second lens L2, it is helpful to compress the total optical length of the camera optical lens 10, 20, 30, 40, 50, 60.

[0062] Based on the above conditional expressions and the functions that can be achieved, the characteristics of each lens are further refined as follows.

[0063] 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 reflective surface and the on-axis distance from the reflective surface to the image side surface of the first prism P1 is dp1, and the total optical length of the camera optical lenses 10, 20, 30, 40, 50, 60 is TTL, and satisfies the following relationship:

[0064] 0.92≤fp1 / fA≤1.23 (5)

[0065] 0.37≤dp1 / TTL≤0.38 (6)

[0066] Conditional equation (5) specifies the ratio range of the focal length fp1 of the first prism P1 to the focal length fA of the imaging optical lens 10, 20, 30, 40, 50, 60 in the first state. Within the range defined by conditional equation (5), it helps to improve the optical performance of the imaging optical lens 10, 20, 30, 40, 50, 60.

[0067] The conditional expression (6) specifies the ratio range of the sum of the on-axis distances dp1 of the first prism P1 to the total optical length TTL of the camera optical lens 10, 20, 30, 40, 50, 60. Within the range defined by the conditional expression (6), it is beneficial to control the total optical length TTL of the camera optical lens 10, 20, 30, 40, 50, 60, and realize the miniaturized design of the camera optical lens 10, 20, 30, 40, 50, 60. More preferably, 0.372≤dp1 / TTL≤0.374.

[0068] The object side surface of the first prism P1 is convex near the axis, and the image side surface of the first prism P1 is convex near the axis. The object side surface and the image side surface of the first prism P1 can also be set to other concave or convex distributions.

[0069] Preferably, the focal length of the first lens L1 is f1, the curvature radius of the object side surface of the first lens L1 is R1, the curvature radius of the image side surface of the first lens L1 is R2, and the following relationship is satisfied:

[0070] -1.012≤f1 / fA≤-0.943 (7)

[0071] 3.33≤(R1+R2) / (R1-R2)≤4.00 (8)

[0072] 0.034≤d1 / TTL≤0.061 (9)

[0073] The conditional expression (7) specifies the ratio range of the focal length f1 of the first lens L1 to the focal length fA of the imaging optical lens 10, 20, 30, 40, 50, 60 in the first state. Within the range defined by the conditional expression (7), by controlling the negative focal power of the first lens L1 within a reasonable range, it is beneficial to correct the aberration of the optical system.

[0074] The conditional expression (8) specifies the concavoconvex shapes of the object side surface and the image side surface of the first lens L1. Within the range defined by the conditional expression (8), as the imaging optical lenses 10, 20, 30, 40, 50, 60 develop toward miniaturization, it is beneficial to correct the problem of axial chromatic aberration.

[0075] The conditional expression (9) 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. Within the range defined by the conditional expression (9), it is beneficial to control the total optical length TTL of the imaging optical lens 10, 20, 30, 40, 50, 60, thereby realizing a miniaturized design of the imaging optical lens 10, 20, 30, 40, 50, 60.

[0076] The object side surface of the first lens L1 is convex at the paraxial position, and the image side surface of the first lens L1 is concave at the paraxial position. The object side surface and the image side surface of the first lens L1 can also be set to other concave and convex distributions.

[0077] Preferably, the focal length of the second lens L2 is f2, 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, and the following relationship is satisfied:

[0078] 0.412≤f2 / fA≤0.455 (10)

[0079] -0.094≤(R3+R4) / (R3-R4)≤-0.038 (11)

[0080] 0.050≤d3 / TTL≤0.115 (12)

[0081] The conditional expression (10) specifies the ratio range of the focal length f2 of the second lens L2 to the focal length fA of the imaging optical lens 10, 20, 30, 40, 50, 60 in the first state. Within the range defined by the conditional expression (10), it is beneficial to correct the aberration of the optical system and improve the imaging quality of the imaging optical lens 10, 20, 30, 40, 50, 60.

[0082] The conditional expression (11) specifies the concavoconvex shapes of the object side surface and the image side surface of the second lens L2. Within the range defined by the conditional expression (11), as the imaging optical lenses 10, 20, 30, 40, 50, and 60 develop toward miniaturization, it is beneficial to correct the problem of axial chromatic aberration.

[0083] The conditional expression (12) 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. Within the range defined by the conditional expression (12), it is beneficial to control the total optical length TTL of the imaging optical lens 10, 20, 30, 40, 50, 60, thereby realizing a miniaturized design of the imaging optical lens 10, 20, 30, 40, 50, 60.

[0084] The object side surface of the second lens L2 is convex at the paraxial position, and the image side surface of the second lens L2 is convex at the paraxial position. The object side surface and the image side surface of the second lens L2 can also be set to other concave and convex distributions.

[0085] Preferably, the focal length of the third lens L3 is f3, the axial thickness of the third lens L3 is d5, 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, and the following relationship is satisfied:

[0086] -0.475≤f3 / fA≤-0.450 (13)

[0087] -0.58≤(R5+R6) / (R5-R6)≤-0.44 (14)

[0088] 0.019≤d5 / TTL≤0.095 (15)

[0089] The conditional expression (13) specifies the ratio range of the focal length f3 of the third lens L3 to the focal length fA of the camera optical lenses 10, 20, 30, 40, 50, 60 in the first state. Within the range defined by the conditional expression (13), the system has better imaging quality and lower sensitivity through reasonable allocation of optical power.

[0090] The conditional expression (14) specifies the concavoconvex shapes of the object-side surface and the image-side surface of the third lens L3. Within the range defined by the conditional expression (14), the degree of deflection of light passing through the lens can be alleviated, thereby effectively reducing aberrations.

[0091] The conditional formula (15) 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. Within the range defined by the conditional formula (15), it is beneficial to control the total optical length TTL of the imaging optical lens 10, 20, 30, 40, 50, 60, thereby realizing a miniaturized design of the imaging optical lens 10, 20, 30, 40, 50, 60.

[0092] The object side surface of the third lens L3 is concave at the paraxial position, and the image side surface of the third lens L3 is concave at the paraxial position. The object side surface and the image side surface of the third lens L3 can also be set to other concave or convex distributions.

[0093] Preferably, the focal length of the fourth lens L4 is f4, the axial thickness of the fourth lens L4 is d7, and the following relationship is satisfied:

[0094] 0.98≤f4 / fA≤1.15 (16)

[0095] 0.041≤d7 / TTL≤0.103 (17)

[0096] The 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 lenses 10, 20, 30, 40, 50, 60 in the first state. Within the range defined by the conditional expression (16), the system has better imaging quality and lower sensitivity through reasonable allocation of optical power.

[0097] The 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 lenses 10, 20, 30, 40, 50, 60. Within the range defined by the conditional formula (17), it is beneficial to control the total optical length TTL of the imaging optical lenses 10, 20, 30, 40, 50, 60, thereby realizing a miniaturized design of the imaging optical lenses 10, 20, 30, 40, 50, 60.

[0098] The object side surface of the fourth lens L4 is convex at the paraxial position, and the image side surface of the fourth lens L4 is concave at the paraxial position. The object side surface and the image side surface of the fourth lens L4 can also be set to other concave and convex distributions.

[0099] Preferably, the camera optical lenses 10, 20, 30, 40, 50, 60 satisfy the following relationship:

[0100] 0.25≤d5 / d7≤1.15 (18)

[0101] The conditional formula (18) specifies the ratio range of the on-axis thickness d5 of the third lens L3 to the on-axis thickness d7 of the fourth lens L4. Within the range defined by the conditional formula (18), the on-axis thicknesses of the third lens L3 and the fourth lens L4 can be reasonably distributed, which is beneficial to reducing the difficulty of assembling the imaging optical lenses 10, 20, 30, 40, 50, and 60 in the actual production process and improving the yield rate of the imaging optical lenses 10, 20, 30, 40, 50, and 60. More preferably, 0.29≤d5 / d7≤1.15.

[0102] Preferably, the focal length of the fifth lens L5 is f5, 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 axial thickness of the fifth lens L5 is d9, and the following relationship is satisfied:

[0103] -1.93≤f5 / fA≤-1.29 (19)

[0104] 4.31≤(R9+R10) / (R9-R10)≤6.33 (20)

[0105] 0.02≤d9 / TTL≤0.04 (21)

[0106] 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 in the first state. Within the range defined by conditional formula (19), the light angle of the imaging optical lenses 10, 20, 30, 40, 50, 60 is smooth, thereby reducing the tolerance sensitivity.

[0107] Conditional expression (20) specifies the concavo-convex shapes of the object side and image side of the fifth lens L5. Within the range defined by conditional expression (20), as the imaging optical lenses 10, 20, 30, 40, 50, and 60 develop toward miniaturization, it is beneficial to correct problems such as off-axis image angle aberrations.

[0108] The conditional formula (21) specifies the ratio range 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. Within the range defined by the conditional formula (21), it is beneficial to control the total optical length TTL of the imaging optical lens 10, 20, 30, 40, 50, 60, and realize the miniaturized design of the imaging optical lens 10, 20, 30, 40, 50, 60. More preferably, 0.026≤d9 / TTL≤0.032.

[0109] The object side surface of the fifth lens L5 is convex at the paraxial position, and the image side surface of the fifth lens L5 is concave at the paraxial position. The object side surface and the image side surface of the fifth lens L5 can also be set to other concave and convex distributions.

[0110] 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 optional solutions, the first prism P1 and each lens may also be made of other materials.

[0111] 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 optional solutions, the optical filter GF may also be disposed at other positions.

[0112] In the present invention, an aperture ST may be further disposed between the first prism P1 and the first lens L1.

[0113] The following examples will be used to illustrate the camera optical lenses 10, 20, 30, 40, 50, and 60 of the present invention. The symbols recorded in each example are as shown in Table [1]. The units of focal length, on-axis spacing, radius of curvature, and on-axis thickness are millimeters.

[0114] TTL: total optical length (the axial distance from the object side of the first prism P1 to the imaging surface), in millimeters.

[0115] First embodiment:

[0116] 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;

[0117] 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;

[0118] 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;

[0119] The third lens L3 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;

[0120] 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;

[0121] 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.

[0122] Figure 1a and Figure 1b 1 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.

[0123] 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).

[0124]

Table 1

[0125]

[0126] Among them, dp1 = "dp1-01" + "dp1-02", "dp1-01" = 4.9, "dp1-02" = 4.6.

[0127] 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.

[0128]

Table 2

[0129]

[0130]

[0131] The meanings of the symbols in the above table are as follows.

[0132] R: The radius of curvature of the optical surface, and the central radius of curvature for lenses;

[0133] ST: aperture;

[0134] Rp1: radius of curvature of the object side surface of the first prism P1;

[0135] Rp2: the radius of curvature of the image side surface of the first prism P1;

[0136] R1: the radius of curvature of the object side surface of the first lens L1;

[0137] R2: the radius of curvature of the image side surface of the first lens L1;

[0138] R3: the radius of curvature of the object-side surface of the second lens L2;

[0139] R4: the radius of curvature of the image side surface of the second lens L2;

[0140] R5: the radius of curvature of the object side surface of the third lens L3;

[0141] R6: radius of curvature of the image-side surface of the third lens L3;

[0142] R7: radius of curvature of the object-side surface of the fourth lens L4;

[0143] R8: the radius of curvature of the image-side surface of the fourth lens L4;

[0144] R9: radius of curvature of the object side surface of the fifth lens L5;

[0145] R10: radius of curvature of the image-side surface of the fifth lens L5;

[0146] R11: radius of curvature of the object side of the optical filter GF;

[0147] R12: radius of curvature of the image side of the optical filter GF;

[0148] d: the axial thickness of the lens, the axial distance between lenses;

[0149] d0: the axial distance from the aperture ST to the object side of the first prism P1;

[0150] 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;

[0151] dp1-01: the on-axis distance from the object side surface to the reflecting surface of the first prism P1;

[0152] dp1-02: the on-axis distance from the reflection surface of the first prism P1 to the image side surface;

[0153] dp2: the axial distance from the image side surface of the first prism P1 to the object side surface of the first lens L1;

[0154] d1: axial thickness of the first lens L1;

[0155] d2: the axial distance from the image side surface of the first lens L1 to the object side surface of the second lens L2;

[0156] d3: axial thickness of the second lens L2;

[0157] d4: the axial distance from the image side surface of the second lens L2 to the object side surface of the third lens L3;

[0158] d5: axial thickness of the third lens L3;

[0159] d6: the axial distance from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;

[0160] d7: axial thickness of the fourth lens L4;

[0161] d8: the axial distance from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L5;

[0162] d9: axial thickness of the fifth lens L5;

[0163] d10: the axial distance from the image side surface of the fifth lens L5 to the object side surface of the optical filter GF;

[0164] d11: axial thickness of the optical filter GF;

[0165] d12: the axial distance from the image side of the optical filter GF to the imaging surface Si;

[0166] nd: refractive index of d-line;

[0167] nd1: refractive index of the d-line of the first prism P1;

[0168] nd2: refractive index of the d-line of the first lens L1;

[0169] nd3: refractive index of the d-line of the second lens L2;

[0170] nd4: refractive index of the d-line of the third lens L3;

[0171] nd5: the refractive index of the d-line of the fourth lens L4;

[0172] nd6: the refractive index of the fifth lens L5 at the d-line;

[0173] ndg: refractive index of the d-line of the optical filter GF;

[0174] vd: Abbe number;

[0175] vd1: Abbe number of the first prism P1;

[0176] vd2: Abbe number of the first lens L1;

[0177] vd3: Abbe number of the second lens L2;

[0178] vd4: Abbe number of the third lens L3;

[0179] vd5: Abbe number of the fourth lens L4;

[0180] vd6: Abbe number of the fifth lens L5;

[0181] vdg: Abbe number of the optical filter GF.

[0182] Table 3 lists the cone coefficient k and aspherical coefficient of the imaging optical lens 10 according to the first embodiment of the present invention.

[0183]

Table 3

[0184]

[0185]

[0186] It should be noted that the aspheric surface of each lens in this embodiment uses the aspheric surface shown in the following conditional equation (22), but the specific form of the following conditional equation (22) is only an example. In fact, the present invention is not limited to the aspheric polynomial form indicated in the conditional equation (22).

[0187] z=(c 2 / r) / {1+[1-(k+1)(c 2 / r 2 )] 1 / 2}+A4c 4 +A6c 6 +A8c 8 +A10c 10 +A12c 12 +A14c 14 +A16c 16 +A18c 18 +

[0188] A20c 20 +A22c 22 +A24c 24 +A26c 26 +A28c 28 (twenty two)

[0189] Among them, k is the cone coefficient, A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 are aspheric coefficients. c is the curvature at the center of the optical surface, r is the vertical distance between the point on the aspheric curve and the optical axis, and z is the depth of the aspheric surface (the vertical distance between the point r on the aspheric surface and the tangent plane tangent to the vertex on the aspheric optical axis).

[0190] In addition, in the subsequent Table 19, various parameters in the first embodiment and values ​​corresponding to the prescribed parameters in the conditional expressions are also listed.

[0191] Figure 2a and Figure 2b A schematic diagram showing the field curvature and distortion of light having a wavelength of 555 nanometers after passing through the camera optical lens 10 of the first embodiment; Figure 3a and Figure 3b A schematic diagram of axial aberrations of wavelengths of 430 nanometers, 470 nanometers, 510 nanometers, 555 nanometers, 610 nanometers, and 650 nanometers after passing through the camera optical lens 10 of the first embodiment is shown; Figure 4a and Figure 4b A schematic diagram of magnification chromatic aberration of wavelengths of 430 nanometers, 470 nanometers, 510 nanometers, 555 nanometers, 610 nanometers, and 650 nanometers after passing through the imaging optical lens 10 of the first embodiment is shown.

[0192] As shown in Table 19, the first embodiment satisfies each conditional expression.

[0193] In this embodiment, the entrance pupil diameter of the camera optical lens 10 in the first state is 7.162 mm, the full field of view image height is 3.600 mm, and the diagonal field of view is 24.23°. The camera optical lens 10 meets the characteristics of large aperture, telephoto, and miniaturization. Its on-axis and off-axis chromatic aberrations are fully corrected and it has excellent optical performance.

[0194] Second embodiment

[0195] 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;

[0196] 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;

[0197] 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;

[0198] The third lens L3 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;

[0199] 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;

[0200] 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.

[0201] Figure 5a and Figure 5b 2 is a schematic diagram of the structure of the camera optical lens 20 in the second embodiment. The second embodiment is basically the same as the first embodiment, and the meanings of the symbols are the same as those in the first embodiment. Only the differences are listed below.

[0202] Tables 4 to 6 show design data of the imaging optical lens 20 according to the second embodiment of the present invention.

[0203]

Table 4

[0204]

[0205]

[0206] Among them, dp1 = "dp1-01" + "dp1-02", "dp1-01" = 4.9, "dp1-02" = 4.6.

[0207] 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.

[0208]

Table 5

[0209] In the first state In the second state f 16.025 14.399 FOV 24.77° 24.30° FNO 2.26 2.55 dp2 0.656 0.145 d4 0.061 0.572

[0210] Table 6 lists the cone coefficient k and aspherical coefficient of the imaging optical lens 20 according to the second embodiment of the present invention.

[0211]

Table 6

[0212]

[0213]

[0214] In addition, in the subsequent Table 19, various parameters in the second embodiment and values ​​corresponding to the prescribed parameters in the conditional expressions are also listed.

[0215] Figure 6a and Figure 6b A schematic diagram showing the field curvature and distortion of light having a wavelength of 555 nanometers after passing through the camera optical lens 20 of the second embodiment; Figure 7a and Figure 7bA schematic diagram of axial aberrations of wavelengths of 430 nanometers, 470 nanometers, 510 nanometers, 555 nanometers, 610 nanometers, and 650 nanometers after passing through the camera optical lens 20 of the second embodiment is shown; Figure 8a and Figure 8b A schematic diagram of magnification chromatic aberration of wavelengths of 430 nanometers, 470 nanometers, 510 nanometers, 555 nanometers, 610 nanometers, and 650 nanometers after passing through the imaging optical lens 20 of the second embodiment is shown.

[0216] As shown in Table 19, the second embodiment satisfies each conditional expression.

[0217] In this embodiment, the entrance pupil diameter of the camera optical lens 20 in the first state is 7.089 mm, the full field image height is 3.600 mm, and the diagonal field of view is 24.77°. The camera optical lens 20 has the characteristics of large aperture, telephoto, and miniaturization. Its on-axis and off-axis chromatic aberrations are fully corrected and it has excellent optical performance.

[0218] Third embodiment

[0219] 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;

[0220] 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;

[0221] 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;

[0222] The third lens L3 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;

[0223] 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;

[0224] 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.

[0225] Figure 9a and Figure 9b 3 is a schematic diagram of the structure of the camera optical lens 30 in the third embodiment. The third embodiment is basically the same as the first embodiment, and the meanings of the symbols are the same as those in the first embodiment. Only the differences are listed below.

[0226] Tables 7 to 9 show design data of the imaging optical lens 30 according to the third embodiment of the present invention.

[0227]

Table 7

[0228]

[0229] Among them, dp1 = "dp1-01" + "dp1-02", "dp1-01" = 4.9, "dp1-02" = 4.6.

[0230] 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.

[0231]

Table 8

[0232] In the first state In the second state f 16.000 14.400 FOV 24.64° 24.25 FNO 2.28 2.56 dp2 0.851 0.335 d4 0.032 0.547

[0233] Table 9 lists the cone coefficient k and aspherical coefficient of the imaging optical lens 30 according to the third embodiment of the present invention.

[0234]

Table 9

[0235]

[0236]

[0237] In addition, in the subsequent Table 19, various parameters in the third embodiment and values ​​corresponding to the prescribed parameters in the conditional expressions are also listed.

[0238] Fig.10a and Fig.10b A schematic diagram showing the field curvature and distortion of light having a wavelength of 555 nanometers after passing through the camera optical lens 30 of the third embodiment; Fig.11a and Fig.11b A schematic diagram of axial aberrations of wavelengths of 430 nanometers, 470 nanometers, 510 nanometers, 555 nanometers, 610 nanometers, and 650 nanometers after passing through the camera optical lens 30 of the third embodiment is shown; Fig.12a and Figure 12b A schematic diagram of magnification chromatic aberration of wavelengths of 430 nanometers, 470 nanometers, 510 nanometers, 555 nanometers, 610 nanometers, and 650 nanometers after passing through the imaging optical lens 30 of the third embodiment is shown.

[0239] As shown in Table 19, the third embodiment satisfies each conditional expression.

[0240] In this embodiment, the entrance pupil diameter of the camera optical lens 30 in the first state is 7.009 mm, the full field of view image height is 3.600 mm, and the diagonal field of view is 24.64°. The camera optical lens 30 meets the characteristics of large aperture, telephoto, and miniaturization. Its on-axis and off-axis chromatic aberrations are fully corrected and it has excellent optical performance.

[0241] Fourth embodiment

[0242] 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;

[0243] 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;

[0244] 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;

[0245] The third lens L3 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;

[0246] 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;

[0247] 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.

[0248] Fig.13a and Fig.13b 3 is a schematic diagram of the structure of the camera optical lens 40 in the fourth embodiment. The fourth embodiment is basically the same as the first embodiment, and the meanings of the symbols are the same as those in the first embodiment. Only the differences are listed below.

[0249] Tables 10 to 12 show design data of the imaging optical lens 40 according to the fourth embodiment of the present invention.

[0250]

Table 10

[0251]

[0252] Among them, dp1 = "dp1-01" + "dp1-02", "dp1-01" = 4.9, "dp1-02" = 4.6.

[0253] 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.

[0254]

Table 11

[0255] In the first state In the second state f 15.941 14.4 FOV 24.85° 24.45° FNO 2.27 2.53 dp2 0.68 0.163 d4 0.094 0.611

[0256] Table 12 lists the cone coefficient k and aspherical coefficient of the imaging optical lens 40 according to the fourth embodiment of the present invention.

[0257]

Table 12

[0258]

[0259]

[0260]

[0261] In addition, in the subsequent Table 19, various parameters in the fourth embodiment and the values ​​corresponding to the prescribed parameters in the conditional expressions are also listed.

[0262] Fig.14a and Fig.14b A schematic diagram showing the field curvature and distortion of light having a wavelength of 555 nanometers after passing through the camera optical lens 40 of the fourth embodiment; Fig.15a and Fig.15b A schematic diagram of axial aberrations of wavelengths of 430 nanometers, 470 nanometers, 510 nanometers, 555 nanometers, 610 nanometers, and 650 nanometers after passing through the camera optical lens 40 of the fourth embodiment is shown; Fig.16a and Fig.16b A schematic diagram of magnification chromatic aberration of wavelengths of 430 nanometers, 470 nanometers, 510 nanometers, 555 nanometers, 610 nanometers, and 650 nanometers after passing through the imaging optical lens 40 of the fourth embodiment is shown.

[0263] As shown in Table 19, the fourth embodiment satisfies each conditional expression.

[0264] In this embodiment, the entrance pupil diameter of the camera optical lens 40 in the first state is 7.035 mm, the full field of view image height is 3.600 mm, and the diagonal field of view is 24.85°. The camera optical lens 40 has the characteristics of large aperture, telephoto, and miniaturization. Its on-axis and off-axis chromatic aberrations are fully corrected and it has excellent optical performance.

[0265] Fifth embodiment

[0266] 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;

[0267] 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;

[0268] 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;

[0269] The third lens L3 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;

[0270] 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;

[0271] 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.

[0272] Fig.17a and Fig.17b 3 is a schematic diagram of the structure of the camera optical lens 50 in the fifth embodiment. The fifth embodiment is basically the same as the first embodiment, and the meanings of the symbols are the same as those in the first embodiment. Only the differences are listed below.

[0273] Tables 13 to 15 show design data of the imaging optical lens 50 according to the fifth embodiment of the present invention.

[0274]

Table 13

[0275]

[0276]

[0277] Among them, dp1 = "dp1-01" + "dp1-02", "dp1-01" = 4.9, "dp1-02" = 4.6.

[0278] 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.

[0279]

Table 14

[0280] In the first state In the second state f 15.876 14.4 FOV 24.95° 24.56° FNO 2.25 2.49 dp2 0.606 0.1 d4 0.094 0.6

[0281] Table 15 lists the cone coefficient k and aspherical coefficient of the imaging optical lens 50 according to the fifth embodiment of the present invention.

[0282]

Table 15

[0283]

[0284]

[0285] In addition, in the subsequent Table 19, various parameters in the fifth embodiment and the values ​​corresponding to the prescribed parameters in the conditional expressions are also listed.

[0286] Fig.18a and Fig.18b A schematic diagram showing the field curvature and distortion of light having a wavelength of 555 nanometers after passing through the camera optical lens 50 of the fifth embodiment; Fig.19a and Fig.19b A schematic diagram of axial aberrations of wavelengths of 430 nanometers, 470 nanometers, 510 nanometers, 555 nanometers, 610 nanometers, and 650 nanometers after passing through the camera optical lens 50 of the fifth embodiment is shown; Fig.20a and Fig.20bA schematic diagram of magnification chromatic aberration of wavelengths of 430 nanometers, 470 nanometers, 510 nanometers, 555 nanometers, 610 nanometers, and 650 nanometers after passing through the imaging optical lens 50 of the fifth embodiment is shown.

[0287] As shown in Table 19, the fifth embodiment satisfies each conditional expression.

[0288] In this embodiment, the entrance pupil diameter of the camera optical lens 50 in the first state is 7.068 mm, the full field of view image height is 3.600 mm, and the diagonal field of view is 24.95°. The camera optical lens 50 has the characteristics of large aperture, telephoto, and miniaturization. Its on-axis and off-axis chromatic aberrations are fully corrected and it has excellent optical performance.

[0289] Sixth Embodiment

[0290] 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;

[0291] 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;

[0292] 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;

[0293] The third lens L3 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;

[0294] 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;

[0295] 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.

[0296] Fig.21a and Figure 21b 3 is a schematic diagram of the structure of the camera optical lens 60 in the sixth embodiment. The sixth embodiment is basically the same as the first embodiment, and the meanings of the symbols are the same as those in the first embodiment. Only the differences are listed below.

[0297] Tables 16 to 18 show design data of the imaging optical lens 60 according to the sixth embodiment of the present invention.

[0298]

Table 16

[0299]

[0300] Among them, dp1 = "dp1-01" + "dp1-02", "dp1-01" = 4.9, "dp1-02" = 4.6.

[0301] 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.

[0302]

Table 17

[0303]

[0304] Table 18 lists the cone coefficient k and aspherical coefficient of the imaging optical lens 60 according to the sixth embodiment of the present invention.

[0305]

Table 18

[0306]

[0307]

[0308] In addition, in the subsequent Table 19, the values ​​corresponding to the parameters specified in the conditional expressions of various parameters in the sixth embodiment are also listed.

[0309] Fig.22a and Figure 22b FIG. 4 is a schematic diagram showing the field curvature and distortion of light having a wavelength of 555 nanometers after passing through the camera optical lens 60 of the sixth embodiment; Fig.23a and Figure 23b A schematic diagram of axial aberrations of wavelengths of 430 nanometers, 470 nanometers, 510 nanometers, 555 nanometers, 610 nanometers, and 650 nanometers after passing through the camera optical lens 60 of the sixth embodiment is shown; Fig.24a and Figure 24b A schematic diagram of magnification chromatic aberration of wavelengths of 430 nanometers, 470 nanometers, 510 nanometers, 555 nanometers, 610 nanometers, and 650 nanometers after passing through the imaging optical lens 60 of the sixth embodiment is shown.

[0310] As shown in Table 19, the sixth embodiment satisfies each conditional expression.

[0311] In this embodiment, the entrance pupil diameter of the camera optical lens 60 in the first state is 6.904 mm, the full field image height is 3.600 mm, and the diagonal field of view is 25.11°. The camera optical lens 60 has the characteristics of large aperture, telephoto, and miniaturization. Its on-axis and off-axis chromatic aberrations are fully corrected and it has excellent optical performance.

[0312]

Table 19

[0313]

[0314]

[0315] 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 with negative refractive power, a fourth lens with positive refractive power and a fifth lens with negative refractive power, which are arranged in sequence from the object side to the image side; a reflecting surface is provided between the object side surface and the image side surface of the first prism; The first lens and the second lens form a first lens group, and the third lens, 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 surface of the first prism is Rp1, the radius of curvature of the image side surface of the first prism is Rp2, the axial thickness of the first lens is d1, the axial thickness of the second lens is d3, the radius of curvature of the object side surface of the fourth lens is R7, the radius of curvature of the image side surface of the fourth lens is R8, and the following relationship is satisfied: 4.00≤fA / IH≤4.60; -4.00≤Rp1 / Rp2≤-0.14; 0.30≤d1 / d3≤1.20; -2.90≤(R7+R8) / (R7-R8)≤-1.

20.

2. The imaging optical lens according to claim 1, characterized in that: The camera optical lens satisfies the following relationship: 4.38≤fA / IH≤4.53; -3.90≤Rp1 / Rp2≤-0.14; -2.90≤(R7+R8) / (R7-R8)≤-1.

19.

3. The imaging optical lens according to claim 1, characterized in that: The object side surface of the first prism is convex at the near axis, and the image side surface of the first prism is convex at the near axis; The focal length of the first prism is fp1, and satisfies the following relationship: 0.92≤fp1 / fA≤1.

23.

4. 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 of the first lens is concave at the paraxial position; The focal length of the first lens is f1, the curvature radius of the object side surface of the first lens is R1, the curvature radius of the image side surface of the first lens is R2, the total optical length of the camera optical lens is TTL, and the following relationship is satisfied: -1.012≤f1 / fA≤-0.943; 3.33≤(R1+R2) / (R1-R2)≤4.00; 0.034≤d1 / TTL≤0.

061.

5. The imaging optical lens according to claim 1, wherein: 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 focal length of the second lens is f2, the radius of curvature of the object side surface of the second lens is R3, the radius of curvature of the image side surface of the second lens is R4, the total optical length of the camera optical lens is TTL, and the following relationship is satisfied: 0.412≤f2 / fA≤0.455; -0.094≤(R3+R4) / (R3-R4)≤-0.038; 0.050≤d3 / TTL≤0.

115.

6. The imaging optical lens according to claim 1, characterized in that: 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 focal length of the third lens is f3, the radius of curvature of the object side surface of the third lens is R5, the radius of curvature of the image side surface of the third lens is R6, the axial thickness of the third lens is d5, the total optical length of the camera optical lens is TTL, and the following relationship is satisfied: -0.475≤f3 / fA≤-0.450; -0.58≤(R5+R6) / (R5-R6)≤-0.44; 0.019≤d5 / TTL≤0.

095.

7. The imaging optical lens according to claim 1, characterized in that: The object side surface of the fourth lens is convex at the paraxial position, and the image side surface of the fourth lens is concave at the paraxial position; The focal length of the fourth lens is f4, the axial thickness of the fourth lens is d7, the total optical length of the camera optical lens is TTL, and the following relationship is satisfied: 0.98≤f4 / fA≤1.15; 0.041≤d7 / TTL≤0.

103.

8. The imaging optical lens according to claim 1, wherein: The on-axis thickness of the third lens is d5, the on-axis thickness of the fourth lens is d7, and the following relationship is satisfied: 0.25≤d5 / d7≤1.

15.

9. The imaging optical lens according to claim 8, characterized in that: The camera optical lens satisfies the following relationship: 0.29≤d5 / d7≤1.

15.

10. The imaging optical lens according to claim 1, characterized in that: The object side surface of the fifth lens is convex at the paraxial position, and the image side surface of the fifth lens is concave at the paraxial position; The focal length of the fifth lens is f5, 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, and the following relationship is satisfied: -1.93≤f5 / fA≤-1.29; 4.31≤(R9+R10) / (R9-R10)≤6.

33.

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

Images