Photographing optical lens

Abstract

A photographing optical lens (10, 20, 30). The photographing optical lens (10, 20, 30) consists of a first optical element (L1) having positive refractive power, a second lens (L2) having negative refractive power, a third lens (L3) having positive refractive power, a fourth lens (L4) having negative refractive power, a fifth lens (L5) having positive refractive power, and a sixth lens (L6) which are sequentially arranged from the object side to the image side. The object-side surface of the first optical element (L1) is a curved surface and is a convex surface at the paraxial position; the image-side surface of the first optical element (L1) is a curved surface and is a concave surface at the paraxial position; a reflecting surface (RF) is provided between the object-side surface and the image-side surface of the first optical element (L1); the radius of curvature of the image-side surface of the first optical element (L1) is R2; the Abbe number of the first optical element (L1) is vd1; the radius of curvature of the object-side surface of the second lens (L2) is R3; and the following relational expressions are satisfied: vd1≥60.00, and 4.50≤R2 / R3≤50.00. Such a photographing optical lens (10, 20, 30) can improve the performance of an aspheric lens after tilting, thereby achieving a large-aperture periscope design, and having good optical performance.

Description

Camera optical lens Technical Field

[0001] The embodiments of the present application 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 smartphones, the research and development and design of cameras have developed rapidly. Coupled with the current trend of electronic products towards high functionality and thin and compact appearance, miniaturized cameras with good imaging quality have become the mainstream in the current market.

[0003] Telephoto cameras can meet consumers' needs for capturing specific images. Traditional telephoto cameras have excessive optical length, which does not meet the requirements of slim and lightweight smartphone designs. Periscope telephoto camera designs can significantly shorten the overall optical length of the camera lens while maintaining the required telephoto design. However, the optical performance of existing periscope telephoto camera lenses still cannot meet these requirements.

[0004] Summary of the Invention

[0005] The purpose of this application is to provide a camera optical lens that can achieve a large aperture periscope design and has good optical performance.

[0006] In order to solve the above technical problems, the first aspect of the present application provides a camera optical lens, which is composed of a first optical element with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a fourth lens with negative refractive power, a fifth lens with positive refractive power, and a sixth lens, which are arranged in sequence from the object side to the image side; the curvature radius of the object side of the first optical element is R1, the curvature radius of the image side of the first lens is R2, the Abbe number of the first optical element is vd1, the curvature radius of the object side of the second lens is R3, and the following relationship is satisfied: vd1≥60.00; 4.50≤R2 / R3≤50.00.

[0007] The beneficial effects of the present application are that the first optical component adopts an aspheric prism design, which can improve the optical performance of the camera optical lens after the aspheric prism is tilted, achieve anti-shake, and set the Abbe number of the aspheric prism, and the shape of its object side and image side, which can realize a large aperture periscope design with good optical performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0009] FIG1 is a schematic structural diagram of an optical camera lens according to an embodiment of the present application;

[0010] FIG2 is a schematic diagram of field curvature and distortion of the camera optical lens shown in FIG1 ;

[0011] FIG3 is a schematic diagram of magnification chromatic aberration of the camera optical lens shown in FIG1 ;

[0012] FIG4 is a schematic diagram of axial aberration of the camera optical lens shown in FIG1 ;

[0013] FIG5 is a schematic structural diagram of a camera optical lens according to another embodiment of the present application;

[0014] FIG6 is a schematic diagram of field curvature and distortion of the camera optical lens shown in FIG5 ;

[0015] FIG7 is a schematic diagram of magnification chromatic aberration of the camera optical lens shown in FIG5 ;

[0016] FIG8 is a schematic diagram of axial aberration of the camera optical lens shown in FIG5 ;

[0017] FIG9 is a schematic structural diagram of a camera optical lens according to another embodiment of the present application;

[0018] FIG10 is a schematic diagram of field curvature and distortion of the camera optical lens shown in FIG9 ;

[0019] FIG11 is a schematic diagram of magnification chromatic aberration of the camera optical lens shown in FIG9 ;

[0020] FIG12 is a schematic diagram of axial aberration of the camera optical lens shown in FIG9 . DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present application more clear, each embodiment of the present application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will appreciate that many technical details are provided in each embodiment of the present application to help readers better understand the present application. However, even without these technical details and various variations and modifications based on the following embodiments, the technical solutions claimed in the present application can still be implemented.

[0022] Referring to the accompanying drawings, the technical solution of the present application provides a camera optical lens 10, 20, 30, which is composed of a first optical element L1 with positive refractive power, a second lens L2 with negative refractive power, an aperture ST, a third lens L3 with positive refractive power, a fourth lens L4 with negative refractive power, a fifth lens L5 with positive refractive power, and a sixth lens L6, which are arranged in sequence from the object side to the image side; the object side surface of the first optical element L1 is a curved surface and is convex at the paraxial position, the image side surface of the first optical element L1 is a curved surface and is concave at the paraxial position, a reflecting surface is provided between the object side surface and the image side surface of the first optical element, the curvature radius of the image side surface of the first optical element L1 is R2, the Abbe number of the first optical element L1 is vd1, the curvature radius of the object side surface of the second lens L2 is R3, and the following relationship is satisfied: vd1≥60.00 (1) 4.50≤R2 / R3≤50.00 (2)

[0023] The first optical component L1 is formed by gluing a first prism PL and a first lens SL. The first lens SL is closer to the image side than the first prism PL. The object side surface of the first prism PL is the object side surface of the first optical component L1, and the image side surface of the first lens SL is the image side surface of the first optical component L1. The gluing surface RG is perpendicular to the optical axis of the camera optical lens 10, 20, 30 and is arranged close to the image side surface of the first optical component L1. The first optical component L1 can also be an integrally molded structure, that is, the first prism PL and the first lens PL are integrally molded. The object side surface of the first prism PL is an aspherical surface. Preferably, the image side surface of the first prism PL is a standard surface, and the object side surface of the first lens SL is also a standard surface. In this way, the difficulty of gluing the first prism PL and the first lens SL can be reduced. Optionally, the image side surface of the first lens SL can be a spherical surface or an aspherical surface.

[0024] As described above, the first optical element L1 is set to a combination of a first prism PL and a first lens SL. When the first prism PL is rotated and / or tilted in a direction perpendicular to the optical axis, OIS optical image stabilization can be achieved, that is, the aspherical surface of the first prism PL and the spherical / aspherical surface design of the first lens SL can improve the optical performance of the first prism PL after tilting.

[0025] The object-side surface of the first optical element L1 is convex at the near-axis, while the image-side surface is concave at the near-axis. Thus, when the first optical element L1 is rotated and / or tilted in a direction perpendicular to the optical axis, optical image stabilization of the camera optical lens 10 can be achieved. This surface design and distribution can improve the optical performance of the aspheric prism PL after tilting.

[0026] Conditional equation (1) specifies the Abbe number vd1 of the first optical element L1, which helps reduce dispersion and improve luminous flux. It should be noted that when the first optical element L1 is composed of the first prism PL and the first lens SL cemented together, the first prism PL and the first lens SL are made of the same material.

[0027] Conditional equation (2) specifies the ratio range of the image side curvature radius R2 of the first optical element L1 and the object side curvature radius R3 of the second lens, controls the shapes of the image side surface of the first optical element L1 and the object side surface of the second lens L2, and helps to ensure the smooth propagation of light in the camera optical lens 10, 20, 30 after the first prism PL is tilted, so that the system has better imaging quality and lower sensitivity.

[0028] When the above conditions are met, by setting multiple lenses (L1, L2, L3, L4, L5, L6), setting the shape and Abbe number vd1 of the first optical component L1, and specifying the ratio range of the curvature radius R2 of the image side surface of the first optical component L1 and the curvature radius R3 of the object side surface of the second lens L2, a large aperture periscope design of the camera optical lens 10, 20, 30 can be achieved, so that it has good optical performance, and is particularly suitable for smart terminals such as smartphones, tablets, smart watches and laptops.

[0029] Based on the above conditional expressions and the functions that can be achieved, the characteristics of each lens are further refined as follows.

[0030] Preferably, the axial thickness of the second lens L2 is d5, the focal length of the second lens L2 is f2, and the following relationship is satisfied: -12.00≤f2 / d5≤-10.00 (3)

[0031] Conditional equation (3) specifies the range of the ratio of the focal length f2 of the second lens element L2 to its axial thickness d5. Under this limited condition, it helps to buffer the changes in the incident angle of wide-angle light, allowing it to propagate smoothly through the lens group, while maintaining the refractive power of the fifth lens element L5, thereby improving chromatic aberration and enhancing image quality.

[0032] Preferably, the on-axis thickness of the fourth lens L4 is d9, the on-axis distance between the fourth lens L4 and the fifth lens L5 is d10, and the following relationship is satisfied: 0.95≤d9 / d10≤3.10 (4)

[0033] Conditional equation (4) specifies the range of the ratio between the on-axis thickness d9 of the fourth lens L4 and the on-axis thickness d10 between the fourth lens L4 and the fifth lens L5. This allows for a reasonable allocation of the on-axis thicknesses and air gaps between the lenses, which helps reduce the sensitivity of the imaging optical lenses 10, 20, and 30, improves production yield, and makes the optical system more compact, achieving an ultra-thin design for the imaging optical lenses 10, 20, and 30.

[0034] Preferably, the curvature radius of the object side surface of the fourth lens L4 is R7, the curvature radius of the image side surface of the fourth lens L4 is R8, and the following relationship is satisfied: -5.70≤R7 / R8≤-1.60 (5)

[0035] Conditional formula (5) specifies the setting range of the side curvature radius of the fourth lens L4. Within this conditional range, the field curvature of the camera optical lenses 10, 20, and 30 can be well balanced, and the field curvature offset of the central field of view can be made less than 0.01 mm, thereby improving the imaging effect.

[0036] Preferably, the focal length of the camera optical lens 10, 20, 30 is f, and the image height IH of the camera optical lens 10, 20, 30 satisfies the following relationship: f / IH≤4.50 (6)

[0037] Conditional formula (6) defines the ratio range of the focal length f of the camera optical lens 10, 20, 30 to its maximum image height IH. Within the above range, it means that the camera optical lens 10, 20, 30 meets the telephoto design.

[0038] Preferably, the focal length of the first optical element is f1, the focal length of the camera optical lens is f, the radius of curvature of the object side surface of the first optical element is R1, the axial thickness from the object side surface of the first optical element L1 to the reflective surface is d1, the total optical length of the camera optical lenses 10, 20, 30 is TTL, and the following relationships are satisfied: 1.83≤f1 / f≤8.63 (7) -22.32≤(R1+R2) / (R1-R2)≤-2.86 (8) 0.08≤d1 / TTL≤0.27 (9)

[0039] Conditional equation (7) specifies the range of the ratio of the focal length f1 of the first optical element L1 to the focal length f of the imaging optical lenses 10, 20, and 30. Within this range, the optical performance of the imaging optical lenses 10, 20, and 30 is improved. More preferably, 2.93 ≤ f1 / f ≤ 6.91. Conditional equation (8) specifies the shapes of the object-side and image-side surfaces of the first optical element L1, which helps improve the imaging quality of the imaging optical lenses 10, 20, and 30. More preferably, -13.95 ≤ (R1+R2) / (R1-R2) ≤ -3.57. Conditional formula (9) specifies the ratio range of the on-axis thickness d1 from the object side surface of the first optical component L1 to the reflecting surface to the total optical length TTL of the camera optical lens 10, 20, 30. Within this range, it is conducive to achieving an ultra-thin design of the camera optical lens 10, 20, 30. More preferably, 0.13≤d1 / TTL≤0.22.

[0040] The second lens L2 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. The object side surface and image side surface of the second lens L2 can also be set to other concave and convex distributions.

[0041] The curvature radius 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 d5, the total optical length of the camera optical lenses 10, 20, and 30 is TTL, and the following relationships are satisfied: -1.83≤(R3+R4) / (R3-R4)≤6.10 (10) -1.65≤f2 / f≤-0.49 (11) 0.02≤d5 / TTL≤0.07 (12)

[0042] Conditional formula (10) specifies the shape of the second lens L2. Within this range, as the imaging optical lens becomes ultra-thin and wide-angle, it is beneficial to correct the problem of axial chromatic aberration. More preferably, 2.94≤(R3+R4) / (R3-R4)≤4.88. Conditional formula (11) specifies the ratio range of the focal length f2 of the second lens L2 to the focal length of the imaging optical lens 10, 20, 30, which helps to improve the optical performance of the imaging optical lens 10, 20, 30. More preferably, -1.03≤f2 / f≤-0.61. Conditional formula (12) specifies the ratio range of the axial thickness d5 of the second lens L2 to the total optical length TTL of the imaging optical lens 10, 20, 30. Within the range specified by the conditional formula, it is beneficial to achieve an ultra-thin design. More preferably, 0.03≤d5 / TTL≤0.06.

[0043] The third lens L3 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. The object-side surface and image-side surface of the third lens L3 can also be set to other concave and convex distributions.

[0044] 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 d7, the total optical length of the camera optical lens 10, 20, 30 is TTL, and the following relationships are satisfied: 1.51≤(R5+R6) / (R5-R6)≤-0.49 (13) 0.15≤f3 / f≤0.50 (14) 0.04≤d7 / TTL≤0.14 (15)

[0045] Conditional equation (13) specifies the shape of the third lens L3. Within this limited range, as the imaging optical lenses 10, 20, and 30 develop towards ultra-thin and wide-angle lenses, it is beneficial to correct axial chromatic aberration. More preferably, -0.94 ≤ (R5 + R6) / (R5 - R6) ≤ -0.61. Conditional equation (14) specifies the range of the ratio of the focal length f3 of the third lens L3 to the focal length f of the imaging optical lenses 10, 20, and 30. Within this range, it is beneficial to reduce aberrations and improve the imaging quality of the imaging optical lenses 10, 20, and 30. More preferably, 0.24 ≤ f3 / f ≤ 0.40. Conditional formula (15) specifies the ratio range of the on-axis thickness d7 of the third lens L3 to the total optical length TTL of the imaging optical lens 10, 20, 30. Within the above conditional formula range, it is conducive to achieving an ultra-thin design of the imaging optical lens 10, 20, 30. More preferably, 0.07≤d7 / TTL≤0.11.

[0046] The fourth lens L4 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. The object-side surface and image-side surface of the fourth lens L4 can also be set to other concave and convex distributions.

[0047] 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 L4 is d9, the total optical length of the camera optical lens 10 is TTL, and the following relationship is satisfied: -1.02≤f4 / f≤-0.24 (16) 0.02≤d9 / TTL≤0.08 (17)

[0048] Conditional equation (16) defines the range of the ratio of the focal length f4 of the fourth lens L4 to the focal length f of the imaging optical lenses 10, 20, and 30, which helps improve the performance of the optical system. More preferably, -0.64≤f4 / f≤-0.30. Conditional equation (17) specifies the range of the ratio of the on-axis thickness d9 of the fourth lens L4 to the total optical length TTL of the imaging optical lenses 10, 20, and 30. Within this parameter range, it is beneficial to achieve an ultra-thin design of the imaging optical lenses 10, 20, and 30. More preferably, 0.03≤d9 / TTL≤0.06.

[0049] The fifth lens L5 has positive refractive power, its object-side surface is convex at the paraxial direction, and its image-side surface is concave at the paraxial direction. The object-side and image-side surfaces of the fifth lens L5 can also be set to other concave-convex distributions.

[0050] 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 is d11, and the total optical length of the camera optical lenses 10, 20, and 30 is TTL: -5.45≤(R9+R10) / (R9-R10)≤-1.30 (18) 0.32≤f5 / f≤1.16 (19) 0.02≤d11 / TTL≤0.10 (20)

[0051] Conditional formula (18) specifies the shape of the fifth lens L5. Within the range specified by the conditional formula, it is helpful to correct the aberration of the off-axis angle of view and other problems. More preferably, -3.41≤(R9+R10) / (R9-R10)≤-1.63. Conditional formula (19) specifies the ratio range of the focal length f5 of the fifth lens L5 to the focal length f of the camera optical lens 10, 20, 30. Within the range of the conditional formula, it is helpful to reduce aberrations and improve imaging quality. More preferably, 0.51≤f5 / f≤0.93. Conditional formula (20) specifies the ratio range of the on-axis thickness d11 of the fifth lens L5 to the total optical length TTL of the camera optical lens 10, 20, 30. Within this range, it is helpful to achieve an ultra-thin design of the camera optical lens 10, 20, 30. More preferably, 0.04≤d11 / TTL≤0.08.

[0052] The sixth lens L6 has positive refractive power, with its object-side surface being convex at the paraxial direction and its image-side surface being concave at the paraxial direction. The sixth lens L6 may also have negative refractive power, and the object-side and image-side surfaces of the sixth lens L6 may also be configured with other concave-convex distributions.

[0053] Preferably, the radius of curvature of the object side surface of the sixth lens L6 is R11, the radius of curvature of the image side surface of the sixth lens L6 is R12, the focal length of the sixth lens L6 is f6, the axial thickness of the sixth lens L6 is d13, and the total optical length of the camera optical lenses 10, 20, and 30 is TTL: -208.82≤(R11+R12) / (R11-R12)≤17.08 (21) -8.06≤f6 / f≤6.55 (22) 0.01≤d13 / TTL≤0.04 (23)

[0054] Conditional formula (21) specifies the shape of the sixth lens L6. Within this range, the curvature radii of the object side and image side of the sixth lens L6 have a wide range of options, which helps to arbitrarily set parameters according to actual production and processing requirements. More preferably, -130.51≤(R11+R12) / (R11-R12)≤13.67. Conditional formula (22) specifies the ratio range of the focal length f6 of the sixth lens L6 to the focal length f of the camera optical lenses 10, 20, and 30. Within this range, the sixth lens L6 has an appropriate negative refractive power, which is beneficial for reducing system aberrations and promoting the development of ultra-thin and wide-angle lenses. More preferably, -5.04≤f6 / f≤5.64. Conditional formula (23) specifies the ratio of the on-axis thickness d13 of the sixth lens L6 to the total optical length TTL of the imaging optical lens 10, 20, 30, which helps to achieve an ultra-thin design of the imaging optical lens 10, 20, 30. More preferably, 0.02≤d13 / TTL≤0.04.

[0055] Preferably, the aperture number FNO of the camera optical lenses 10, 20, 30 satisfies the following relationship: FNO≤2.2 (24)

[0056] This is conducive to achieving a large aperture design of the camera optical lenses 10 , 20 , and 30 .

[0057] In the present application, the first optical element L1 is made of glass, and the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6 are all made of resin. In other feasible situations, the first optical element L1 and each lens may also be made of other materials.

[0058] In the present application, an optical element such as an optical filter GF is disposed between the sixth lens L6 and the imaging surface Si. The optical filter GF may be a glass cover or an optical filter. In other examples, the optical filter GF may also be disposed in other locations.

[0059] The camera optical lens 10 of the present application can improve the performance of the aspheric prism after tilting, can realize a large aperture periscope design, and has good optical performance.

[0060] The following examples illustrate the imaging optical lens of the present application. The symbols used in each example are as follows: focal length, on-axis distance, central radius of curvature, on-axis thickness, inflection point position, and stationary point position are in millimeters.

[0061] TTL: total optical length (the on-axis distance from the object side of the first lens L1 to the image surface Si), in mm;

[0062] Aperture value FNO: refers to the ratio of the effective focal length of the camera optical lens to the entrance pupil diameter.

[0063] Preferably, an inflection point and / or a stagnation point may be provided on the object side and / or image side of the lens to meet high-quality imaging requirements.

[0064] Next, the technical solution of the present application will be specifically described with three embodiments. Figure 1 is a schematic structural diagram of an optical lens 10 in one embodiment of the present application. The following shows the design data of the optical lens 10 in the embodiment of the present application.

[0065] Table 1 lists the object-side and image-side curvature radii R, on-axis thicknesses, on-axis distances d between lenses, refractive indices nd, and Abbe numbers vd of the first through sixth lenses L1, L6, and L7, which constitute the imaging optical lens system 10 in this embodiment. Table 2 shows the conic coefficient k and aspheric coefficients of the imaging optical lens system 10. It should be noted that in this embodiment, the units of distances, radii, and thicknesses are all in millimeters (mm).

[0066]

Table 1

[0067] The meanings of the symbols in the above table are as follows.

[0068] R: radius of curvature of the optical surface;

[0069] ST: aperture;

[0070] R1: object-side surface of the first optical element L1;

[0071] RF: reflective surface of the first optical element L1;

[0072] RG: bonding surface of the first optical element L1;

[0073] R2: image-side surface of the first optical element L1;

[0074] R3: object-side surface of the second lens L2;

[0075] R4: image-side surface of the second lens L2;

[0076] R5: object-side surface of the third lens L3;

[0077] R6: image-side surface of the third lens L3;

[0078] R7: object-side surface of the fourth lens L4;

[0079] R8: image-side surface of the fourth lens L4;

[0080] R9: object-side surface of the fifth lens L5;

[0081] R10: image-side surface of the fifth lens L5;

[0082] R11: object-side surface of the sixth lens L6;

[0083] R12: image-side surface of the sixth lens L6;

[0084] R13: object side of the optical filter GF;

[0085] R14: image side of the optical filter GF;

[0086] d: the on-axis thickness of the lens or the on-axis distance between adjacent lenses;

[0087] d0: the on-axis distance from the aperture ST to the object-side surface of the first lens L1;

[0088] d1: the axial thickness from the object side of the first lens L1 to the reflecting surface of the aspheric prism;

[0089] d2: the axial thickness from the reflecting surface to the bonding surface of the first optical element;

[0090] d3: the axial thickness from the cemented surface to the image-side surface of the first optical element (the axial thickness of the first lens SL);

[0091] d4: the on-axis distance from the image-side surface of the first optical element L1 to the object-side surface of the second lens L2;

[0092] d5: axial thickness of the second lens L2;

[0093] d6: the on-axis distance from the image-side surface of the second lens L2 to the object-side surface of the third lens L3;

[0094] d7: axial thickness of the third lens L3;

[0095] d8: the on-axis distance from the object-side surface of the third lens L3 to the image-side surface of the fourth lens L4;

[0096] d9: axial thickness of the fourth lens L4;

[0097] d10: the on-axis distance from the image-side surface of the fourth lens L4 to the object-side surface of the fifth lens L5;

[0098] d11: axial thickness of the fifth lens L5;

[0099] d12: the on-axis distance from the image-side surface of the fifth lens L5 to the object-side surface of the sixth lens L6;

[0100] d13: axial thickness of sixth lens L6;

[0101] d14: the on-axis distance between the image-side surface of the sixth lens L6 and the object-side surface of the optical filter GF;

[0102] d15: axial thickness of the optical filter GF;

[0103] d16: the axial distance from the image side of the optical filter GF to the image plane Si;

[0104] nd: refractive index of d-line;

[0105] nd1: refractive index of the first optical element L1;

[0106] nd2: the refractive index of the second lens L2;

[0107] nd3: the refractive index of the third lens L3;

[0108] nd4: the refractive index of the fourth lens L4;

[0109] nd5: the refractive index of the fifth lens L5;

[0110] nd6: the refractive index of the sixth lens L6;

[0111] ndg: refractive index of the optical filter GF;

[0112] vd: Abbe number;

[0113] vd1: Abbe number of the first optical element L1;

[0114] vd2: Abbe number of the second lens L2;

[0115] vd3: Abbe number of the third lens L3;

[0116] vd4: Abbe number of the fourth lens L4;

[0117] vd5: Abbe number of the fifth lens L5;

[0118] vd6: Abbe number of sixth lens L6;

[0119] vg: Abbe number of optical filter GF;

[0120]

Table 2

[0121] It should be noted that the aspheric surface of each lens in this embodiment uses the aspheric surface shown in the following formula (25). However, the specific form of the following formula (25) is only an example, and in fact, it is not limited to the aspheric surface polynomial form expressed in formula (25). 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 (25)

[0122] Where k is the cone coefficient, A4, A6, A8, A10, A12, A14, A16, A18, and A20 are aspheric coefficients, c is the curvature at the center of the optical surface, r is the perpendicular distance between a point on the aspheric curve and the optical axis, and z is the aspheric depth (the perpendicular distance between a point on the aspheric surface at a distance r from the optical axis and the tangent plane tangent to the vertex on the aspheric optical axis).

[0123] Figure 2 shows a schematic diagram of astigmatism, field curvature and distortion of light with a wavelength of 546 nanometers after passing through the camera optical lens 10 of this embodiment; Figure 3 shows a schematic diagram of magnification chromatic aberration of light with wavelengths of 435 nanometers, 486 nanometers, 546 nanometers, 587 nanometers and 656 nanometers after passing through the camera optical lens 10 of this embodiment; Figure 4 shows a schematic diagram of axial aberration of light with wavelengths of 435 nanometers, 486 nanometers, 546 nanometers, 587 nanometers and 656 nanometers after passing through the camera optical lens 10 of this embodiment.

[0124] In this embodiment, the entrance pupil diameter of the camera optical lens 10 is 8.224 mm, the full field of view image height IH is 3.594 mm, and the field of view angle FOV is 24.49°. The camera optical lens 10 can improve the optical performance after the first optical component L1 is tilted, realize anti-shake and large aperture periscope design, have good optical performance, its on-axis and off-axis chromatic aberrations are fully corrected, and has excellent optical characteristics.

[0125] FIG5 is a schematic structural diagram of a camera optical lens 20 in another embodiment of the present application. The meanings of the symbols in this embodiment are the same as those in the above embodiment.

[0126] Tables 3 and 4 show the design data of the imaging optical lens 20 of this embodiment.

[0127]

Table 3

[0128]

Table 4

[0129] Figure 6 shows a schematic diagram of astigmatism, field curvature and distortion of light with a wavelength of 546 nanometers after passing through the camera optical lens 20 of this embodiment; Figure 7 shows a schematic diagram of magnification chromatic aberration of light with wavelengths of 435 nanometers, 486 nanometers, 546 nanometers, 587 nanometers and 656 nanometers after passing through the camera optical lens 20 of this embodiment; Figure 8 shows a schematic diagram of axial aberration of light with wavelengths of 435 nanometers, 486 nanometers, 546 nanometers, 587 nanometers and 656 nanometers after passing through the camera optical lens 20 of this embodiment.

[0130] In this embodiment, the entrance pupil diameter of the camera optical lens 20 is 8.7292 mm, the full field of view image height IH is 3.728 mm, and the diagonal field of view is 24.07°. The camera optical lens 20 can improve the optical performance after the first optical element L1 is tilted, realize anti-shake and large aperture periscope design, have good optical performance, and its on-axis and off-axis chromatic aberrations are fully corrected, and have excellent optical characteristics.

[0131] FIG9 is a structural diagram of a camera optical lens 30 in another embodiment of the present application. This embodiment is substantially the same as the above embodiment, and the meanings of the symbols are the same as those in the above embodiment. Only the differences are listed below.

[0132] Tables 5 and 6 show the design data of the imaging optical lens 30 of this embodiment.

[0133]

Table 5

[0134]

Table 6

[0135] Figure 10 shows a schematic diagram of astigmatism, field curvature and distortion of light with a wavelength of 546 nanometers after passing through the camera optical lens 30 of this embodiment; Figure 11 shows a schematic diagram of magnification chromatic aberration of light with wavelengths of 435 nanometers, 486 nanometers, 546 nanometers, 587 nanometers and 656 nanometers after passing through the camera optical lens 30 of this embodiment; Figure 12 shows a schematic diagram of axial aberration of light with wavelengths of 435 nanometers, 486 nanometers, 546 nanometers, 587 nanometers and 656 nanometers after passing through the camera optical lens 30 of this embodiment.

[0136] In this embodiment, the entrance pupil diameter of the camera optical lens 30 is 6.99 mm, the full field of view image height is 3.353 mm, and the diagonal field of view is 24.23°. The camera optical lens 30 can improve the optical performance after the first optical component L1 is tilted, realize anti-shake and large aperture periscope design, have good optical performance, its on-axis and off-axis chromatic aberrations are fully corrected, and has excellent optical characteristics.

[0137] Table 7 that follows shows the values ​​corresponding to the various numerical values ​​in each of the first, second, and third embodiments and the parameters specified in the conditional expressions.

[0138]

Table 7

[0139] The above is a detailed introduction to the camera optical lens provided in the embodiment of the present application. Specific examples are used herein to illustrate the principles and embodiments of the present application. The description of the above embodiments is only used to help understand the ideas of the present application. There may be changes in the specific embodiments and application scope. In summary, the contents of this specification should not be understood as limiting the present application.

Claims

1. A camera optical lens, comprising a first optical element with positive refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a fourth lens with negative refractive power, a fifth lens with positive refractive power, and a sixth lens, which are arranged in sequence from the object side to the image side; the object side surface of the first optical element is a curved surface and is convex at the paraxial position, the image side surface of the first optical element is a curved surface and is concave at the paraxial position, a reflecting surface is provided between the object side surface and the image side surface of the first optical element, the curvature radius of the image side surface of the first optical element is R2, the Abbe number of the first optical element is vd1, the curvature radius of the object side surface of the second lens is R3, and the following relationship is satisfied: vd1≥60.00; 4.50≤R2 / R3≤50.

00.

2. The imaging optical lens according to claim 1, wherein: The axial thickness of the second lens is d5, the focal length of the second lens is f2, and the following relationship is satisfied: -12.00≤f2 / d5≤-10.

00.

3. The imaging optical lens according to claim 1, wherein: The on-axis thickness of the fourth lens is d9, and the on-axis distance between the fourth lens and the fifth lens is d10, and the following relationship is satisfied: 0.95≤d9 / d10≤3.

10.

4. The imaging optical lens according to claim 1, wherein: The curvature radius of the object side surface of the fourth lens is R7, the curvature radius of the image side surface of the fourth lens is R8, and the following relationship is satisfied: -5.70≤R7 / R8≤-1.

60.

5. The imaging optical lens according to claim 1, wherein: The focal length of the camera optical lens is f, the maximum image height of the camera optical lens is IH, and the following relationship is satisfied: f / IH≥4.

50.

6. The imaging optical lens according to claim 1, wherein: The focal length of the first optical component is f1, the focal length of the camera optical lens is f, the curvature radius of the object side of the first optical component is R1, the axial thickness from the object side of the first optical component to the reflective surface is d1, the total optical length of the camera optical lens is TTL, and the following relationship is satisfied: 1.83≤f1 / f≤8.63; -22.32≤(R1+R2) / (R1-R2)≤-2.86; 0.08≤d1 / TTL≤0.

27.

7. The imaging optical lens according to claim 1, wherein: The object side surface of the second lens is convex at the paraxial point, and the image side surface is concave at the paraxial point; 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 d5, the total optical length of the camera optical lens is TTL, and the following relationship is satisfied: -1.83≤(R3+R4) / (R3-R4)≤6.10; -1.65≤f2 / f≤-0.49; 0.02≤d5 / TTL≤0.

07.

8. The imaging optical lens according to claim 1, wherein: The object side surface of the third lens is convex at the paraxial point, and the image side surface is convex at the paraxial point; the curvature radius of the object side surface of the third lens is R5, the curvature radius of the image side surface of the third lens is R6, the focal length of the third lens is f3, the axial thickness of the third lens is d7, the total optical length of the camera optical lens is TTL, and the following relationship is satisfied: -1.51≤(R5+R6) / (R5-R6)≤0.49; 0.15≤f3 / f≤0.50; 0.04≤d7 / TTL≤0.

14.

9. The imaging optical lens according to claim 1, wherein: The object side surface of the fourth lens is concave at the paraxial position, and the image side surface is concave at the paraxial position; the focal length of the fourth lens is f4, the axial thickness of the fourth lens is d9, the total optical length of the camera optical lens is TTL, and the following relationship is satisfied: -1.02≤f4 / f≤-0.24; 0.02≤d9 / TTL≤0.

08.

10. The imaging optical lens according to claim 1, wherein: The object side surface of the fifth lens is convex at the paraxial point, and the image side surface is concave at the paraxial point; 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 d11, and the total optical length of the camera optical lens is TTL: -5.45≤(R9+R10) / (R9-R10)≤-1.30; 0.32≤f5 / f≤1.16; 0.02≤d11 / TTL≤0.

10.

11. The imaging optical lens according to claim 1, wherein: The object side surface of the sixth lens is convex at the paraxial point, and the image side surface is concave at the paraxial point; the curvature radius of the object side surface of the sixth lens is R11, the curvature radius of the image side surface of the sixth lens is R12, the focal length of the sixth lens is f6, the axial thickness of the sixth lens is d13, and the total optical length of the camera optical lens is TTL: -208.82≤(R11+R12) / (R11-R12)≤17.08; -8.06≤f6 / f≤6.55; 0.01≤d13 / TTL≤0.

04.

12. The imaging optical lens according to claim 1, wherein: The first optical element is formed by gluing a first prism and a first lens. The first lens is closer to the image side than the first prism. The object side surface of the first prism is the object side surface of the first optical element, and the image side surface of the first lens is the image side surface of the first optical element. The gluing surface is perpendicular to the optical axis of the camera optical lens and is arranged close to the image side surface of the first optical element.

13. The imaging optical lens according to claim 1, wherein: The first optical component is an integrally formed structure.

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

Images