Camera lens

Abstract

Embodiments of the present application relate to the field of optical technology, and disclose a camera optical lens, which comprises six lenses in sequence from an object side to an image side: a first lens with negative refractive power, a second lens with positive 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 with negative refractive power. Through the configuration mode of the lenses, the camera optical lens has the characteristics of large aperture, wide-angle, ultra-thinness and good optical performance, can control the total optical length of the camera optical lens, reasonably allocate the focal length of the lenses, moderate the deflection degree of light passing through the lenses, effectively correct astigmatism and distortion, correct chromatic aberration, reduce aberration, and improve imaging effect.

Description

TECHNICAL FIELD

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

[0002] The camera optical lens has a wide range of applications in mobile devices, vehicle-mounted cameras and monitoring devices, and the like, especially on smart mobile devices. As the demand for photographing of the smart mobile devices increases, the existing camera optical lens is increasingly difficult to meet the market demand.

[0003] In the existing camera optical lens, the number or size of lenses is often increased to improve the imaging effect, which results in an increase in the total optical length of the camera optical lens, and is not conducive to the realization of miniaturization design. In addition, the existing camera optical lens also has a large chromatic aberration due to design defects, which is not conducive to high-quality imaging and is difficult to meet the design requirements of large aperture, wide angle, and ultra-thin. SUMMARY

[0004] The purpose of the embodiment of the present application is to provide a camera optical lens with a large aperture, wide angle, ultra-thin and good optical performance, which can control the total optical length of the camera optical lens, reasonably allocate the focal length of the lens, moderate the deflection degree of light passing through the lens, effectively correct the astigmatism and distortion, correct the chromatic aberration, reduce the aberration, and improve the imaging effect.

[0005] To solve the above technical problems, an embodiment of the present application provides a camera optical lens, which comprises six lenses in total, and the six lenses are sequentially arranged from the object side to the image side as follows: a first lens with negative refractive power, a second lens with positive 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 with negative refractive power; the object side surface of the first lens is concave at the near axis, and the image side surface of the first lens is concave at the near axis; the object side surface of the second lens is convex at the near axis, and the image side surface of the second lens is concave at the near axis; the object side surface of the third lens is convex at the near axis, and the image side surface of the third lens is convex at the near axis; the object side surface of the fourth lens is concave at the near axis, and the image side surface of the fourth lens is concave at the near axis; the object side surface of the fifth lens is concave at the near axis, and the image side surface of the fifth lens is convex at the near axis; the object side surface of the sixth lens is convex at the near axis, and the image side surface of the sixth lens is concave at the near axis; the central curvature radius of the object side surface of the first lens is R1, the central curvature radius of the image side surface of the first lens is R2, the focal length of the first lens is f1, the on-axis thickness of the first lens is d1, the on-axis distance between the image side surface of the first lens and the object side surface of the second lens is d2, the on-axis thickness of the second lens is d3, the central curvature radius of the object side surface of the fifth lens is R9, the central curvature radius of the image side surface of the fifth lens is R10, the focal length of the fifth lens is f5, the focal length of the sixth lens is f6, the total optical length of the camera optical lens is TTL, and the following relationships are satisfied: -0.40≤(R1+R2) / (R1-R2)≤0.00; 0.20≤(d1+d2+d3) / TTL≤0.30; -1.80≤(f5-f6) / f1≤-1.20; 1.00≤(R9+R10) / (R9-R10)≤1.20.

[0006] Optionally, the focal length of the second lens is f2, the focal length of the third lens is f3, and the following relationship is satisfied: 1.20≤f2 / f3≤3.00.

[0007] Optionally, the image height of the camera optical lens at 1.0 field of view is IH, the focal length of the camera optical lens is f, and the following relationship is satisfied: 0.80≤IH*f / TTL≤1.50.

[0008] Optionally, the focal length of the camera optical lens is f, and the following relationships are also satisfied: -1.67≤f1 / f≤-1.43; 0.05≤d1 / TTL≤0.09.

[0009] Optionally, the focal length of the camera optical lens is f, the focal length of the second lens is f2, and the following relationships are satisfied: -4.02≤(R3+R4) / (R3-R4)≤-2.03; 2.20≤f2 / f≤4.28; 0.10≤d3 / TTL≤0.14.

[0010] Optionally, the focal length of the camera optical lens is f, the central radius of curvature of the object side surface of the third lens is R5, the central radius of curvature of the image side surface of the third lens is R6, the focal length of the third lens is f3, and the on-axis thickness of the third lens is d5, and the following relationships are satisfied: 0.07≤(R5+R6) / (R5-R6)≤0.30; 1.20≤f3 / f≤1.83; 0.08≤d5 / TTL≤0.11.

[0011] Optionally, the focal length of the camera optical lens is f, the central radius of curvature of the object side surface of the fourth lens is R7, the central radius of curvature of the image side surface of the fourth lens is R8, the focal length of the fourth lens is f4, and the on-axis thickness of the fourth lens is d7, and the following relationships are satisfied: 0.74≤(R7+R8) / (R7-R8)≤0.98; -3.56≤f4 / f≤-2.31; 0.04≤d7 / TTL≤0.06.

[0012] Optionally, the focal length of the camera optical lens is f, and the on-axis thickness of the fifth lens is d9, and the following relationships are satisfied: 0.70≤f5 / f≤0.97; 0.19≤d9 / TTL≤0.23.

[0013] Optionally, the focal length of the camera optical lens is f, the central radius of curvature of the object side surface of the sixth lens is R11, the central radius of curvature of the image side surface of the sixth lens is R12, and the on-axis thickness of the sixth lens is d11, and the following relationships are satisfied: 2.76≤(R11+R12) / (R11-R12)≤3.12; -1.86≤f6 / f≤-1.09; 0.07≤d11 / TTL≤0.09.

[0014] Optionally, the image height of the camera optical lens at a 1.0 field of view is IH, and the following relationship is satisfied: 1.60≤TTL / IH≤1.94.

[0015] The application has the beneficial effect that through the above lens configuration, a camera optical lens with a large aperture, wide angle, ultra-thin, and good optical performance is provided, which can control the total optical length of the camera optical lens, reasonably distribute the lens focal length, moderate the deflection degree of light passing through the lens, effectively correct the astigmatism and distortion, correct the chromatic aberration, reduce the aberration, and improve the imaging effect. BRIEF DESCRIPTION OF DRAWINGS

[0016] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0017] Figure 1 1 is a schematic structural diagram of a camera optical lens according to a first embodiment of the present invention;

[0018] Figure 2 yes Figure 1 Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0019] Figure 3 yes Figure 1 Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0020] Figure 4 yes Figure 1 Schematic diagram of axial aberration of the camera optical lens shown;

[0021] Figure 5 2 is a schematic structural diagram of a second embodiment of an imaging optical lens according to the present invention;

[0022] Figure 6 yes Figure 5 Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0023] Figure 7 yes Figure 5 Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0024] Figure 8 yes Figure 5 Schematic diagram of axial aberration of the camera optical lens shown;

[0025] Figure 9 2 is a schematic structural diagram of a camera optical lens according to a third embodiment of the present invention;

[0026] Figure 10 yes Figure 9 Schematic diagram of field curvature and distortion of the camera optical lens shown;

[0027] Figure 11 yes Figure 9 Schematic diagram of magnification chromatic aberration of the camera optical lens shown;

[0028] Figure 12 yes Figure 9 Schematic diagram of axial aberration of the camera optical lens shown;

[0029] Figure 13 2 is a schematic structural diagram of a fourth embodiment of an imaging optical lens according to the present invention;

[0030] Figure 14 is Figure 13 a field curvature and distortion diagram of the photographing optical lens shown in FIG. 1;

[0031] Figure 15 is Figure 13 a lateral chromatic aberration diagram of the photographing optical lens shown in FIG. 1;

[0032] Figure 16 is Figure 13 an axial aberration diagram of the photographing optical lens shown in FIG. 1;

[0033] Figure 17 is a structural diagram of a photographing optical lens of a fifth embodiment of the present application;

[0034] Figure 18 is Figure 17 a field curvature and distortion diagram of the photographing optical lens shown in FIG. 2;

[0035] Figure 19 is Figure 17 a lateral chromatic aberration diagram of the photographing optical lens shown in FIG. 2;

[0036] Figure 20 is Figure 17 an axial aberration diagram of the photographing optical lens shown in FIG. 2;

[0037] Figure 21 is a structural diagram of a photographing optical lens of a sixth embodiment of the present application;

[0038] Figure 22 is Figure 21 a field curvature and distortion diagram of the photographing optical lens shown in FIG. 3;

[0039] Figure 23 is Figure 21 a lateral chromatic aberration diagram of the photographing optical lens shown in FIG. 3;

[0040] Figure 24 is Figure 21 an axial aberration diagram of the photographing optical lens shown in FIG. 3;

[0041] Figure 25 is a structural diagram of a photographing optical lens of a comparative embodiment;

[0042] Figure 26 is Figure 25 a field curvature and distortion diagram of the photographing optical lens shown in FIG. 4;

[0043] Figure 27 is Figure 25 a lateral chromatic aberration diagram of the photographing optical lens shown in FIG. 4;

[0044] Figure 28 is Figure 25Axial aberration schematic diagram of the illustrated camera optical lens. DETAILED DESCRIPTION

[0045] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below with reference to the drawings. However, those skilled in the art can understand that, in the embodiments of the present application, many technical details are presented in order to make the readers better understand the present application. However, the technical solutions claimed by the present application can be implemented even without these technical details and various changes and modifications based on the following embodiments.

[0046] Please refer to Figure 1 , 5 , 9, 13, 17 and 21, the technical solutions of the present application provide a camera optical lens 10, 20, 30, 40, 50, 60, the camera optical lens 10, 20, 30, 40, 50, 60 comprises six lenses in total, specifically, the camera optical lens is sequentially provided from the object side to the image side with a first lens L1 having a negative refractive power, a second lens L2 having a positive refractive power, a third lens L3 having a positive refractive power, a fourth lens L4 having a negative refractive power, a fifth lens L5 having a positive refractive power, and a sixth lens L6 having a negative refractive power. The object side surface of the first lens L1 is concave at the near axis, and the image side surface of the first lens L1 is concave at the near axis; the object side surface of the second lens L2 is convex at the near axis, and the image side surface of the second lens L2 is concave at the near axis; the object side surface of the third lens L3 is convex at the near axis, and the image side surface of the third lens L3 is convex at the near axis; the object side surface of the fourth lens L4 is concave at the near axis, and the image side surface of the fourth lens L4 is concave at the near axis; the object side surface of the fifth lens L5 is concave at the near axis, and the image side surface of the fifth lens L5 is convex at the near axis; the object side surface of the sixth lens L6 is convex at the near axis, and the image side surface of the sixth lens L6 is concave at the near axis.

[0047] The central radius of curvature of the object side surface of the first lens L1 is R1, the central radius of curvature of the image side surface of the first lens L1 is R2, the focal length of the first lens L1 is f1, the on-axis thickness of the first lens L1 is d1, the on-axis distance between the image side surface of the first lens L1 and the object side surface of the second lens L2 is d2, the on-axis thickness of the second lens L3 is d3, the central radius of curvature of the object side surface of the fifth lens L5 is R9, the central 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 focal length of the sixth lens L6 is f6, the total optical length of the camera optical lens 10, 20, 30, 40, 50, 60 is TTL, and the following relationship is satisfied:

[0048] -0.40≤(R1+R2) / (R1-R2)≤0.00 (1)

[0049] 0.20 ≤ (d1+d2+d3) / TTL ≤ 0.30 (2)

[0050] -1.80 ≤ (f5-f6) / f1 ≤ -1.20 (3)

[0051] 1.00 ≤ (R9+R10) / (R9-R10) ≤ 1.20 (4)

[0052] Condition formula (1) defines the shape of the first lens L1, and within the range defined by condition formula (1), it is beneficial to correct the astigmatism and distortion of the photographing optical lens 10, 20, 30, 40, 50, 60, so that the value of distortion |distortion| is less than or equal to 8.5%, and the possibility of generating a dark corner is reduced.

[0053] Condition formula (2) defines the ratio of the distance from the object side of the first lens L1 to the image side of the second lens L2 to the total optical length TTL of the photographing optical lens, and within the range, it is helpful to compress the total optical length TTL of the photographing optical lens 10, 20, 30, 40, 50, 60, and achieve an ultra-thin design.

[0054] Condition formula (3) defines the relationship between the focal length f1 of the first lens L1, the focal length f5 of the fifth lens L5, and the focal length f6 of the sixth lens L6, and within the range of the condition formula, by reasonably allocating the focal length of the photographing optical lens 10, 20, 30, 40, 50, 60, the photographing optical lens 10, 20, 30, 40, 50, 60 has better imaging quality and lower sensitivity.

[0055] Condition formula (4) defines the shape of the fifth lens L5, and within the range of the condition formula, it is beneficial to moderate the degree of deflection of light passing through the fifth lens L5, and can well reduce aberration.

[0056] The focal length of the second lens is defined as f2, the focal length of the third lens is defined as f3, and the following relationship is satisfied:

[0057] 1.20 ≤ f2 / f3 ≤ 3.00 (5)

[0058] Condition formula (5) defines the ratio range of the focal length f2 of the second lens L2 and the focal length f3 of the third lens L3, and within the range of the condition formula, by reasonably allocating the focal length of the photographing optical lens 10, 20, 30, 40, 50, 60, the photographing optical lens 10, 20, 30, 40, 50, 60 has better imaging quality and lower sensitivity. The image height of the photographing optical lens 1.0 field of view is defined as IH, the focal length of the photographing optical lens is defined as f, and the following relationship is satisfied:

[0059] 0.80 ≤ IH*f / TTL ≤ 1.50 (6)

[0060] In the range of conditional expression (6), the total optical length of the photographing optical lens 10, 20, 30, 40, 50, 60 can be effectively reduced, which is conducive to the miniaturization design of the photographing optical lens 10, 20, 30, 40, 50, 60, and at the same time, it is easy to correct distortion and on-axis chromatic aberration, aberration, and maintain good optical performance of the photographing optical lens 10, 20, 30, 40, 50, 60.

[0061] In the case of meeting the above several conditional expressions, the photographing optical lens 10, 20, 30, 40, 50, 60 has good optical performance while meeting the design requirements of large aperture, wide angle, and ultra-thin; according to the characteristics of the photographing optical lens 10, 20, 20, 30, 40, 50, 60, the photographing optical lens 10, 20, 30, 40, 50, 60 is especially suitable for mobile phone camera lens assemblies and WEB cameras composed of high-pixel CCD, CMOS and other imaging elements.

[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] It should be noted that the units of the above center curvature radius, focal length, on-axis distance and total optical length are millimeters.

[0064] The focal length of the photographing optical lens is defined as f, and the following relationship is also satisfied:

[0065] -1.67≤f1 / f≤-1.43 (7)

[0066] 0.05≤d1 / TTL≤0.09 (8)

[0067] Conditional expression (7) limits the ratio range of the focal length f1 of the first lens L1 and the focal length f of the photographing optical lens 10, 20, 30, 40, 50, 60, which is conducive to improving the optical performance of the photographing optical lens 10, 20, 30, 40, 50, 60. Conditional expression (8) limits the ratio range of the on-axis thickness d1 of the first lens L1 and the total optical length TTL of the photographing optical lens 10, 20, 30, 40, 50, 60, which is conducive to controlling the total optical length TTL of the photographing optical lens 10, 20, 30, 40, 50, 60.

[0068] The focal length of the photographing optical lens is defined as f, the focal length of the second lens L2 is defined as f2, and the on-axis thickness of the second lens L2 is defined as d3, and the following relationship is satisfied:

[0069] -4.02≤(R3+R4) / (R3-R4)≤-2.03 (9)

[0070] 2.20 < f2 / f < 4.28 (10)

[0071] 0.10 < d3 / TTL < 0.14 (11)

[0072] Condition formula (9) limits the shape of the second lens L2, in which range the degree of deflection of light rays passing through the second lens L2 can be reduced, effectively reducing aberration. Condition formula (10) limits the ratio of the focal length f2 of the second lens L2 and the focal length f of the photographing optical lens 10, 20, 30, 40, 50, 60, in which range it is helpful to reduce aberration and improve imaging quality. Condition formula (11) limits the on-axis thickness d3 of the second lens L2, in which range the optical total length TTL of the photographing optical lens 10, 20, 30, 40, 50, 60 can be effectively compressed, which is beneficial to realize miniaturization design.

[0073] The focal length of the photographing optical lens is defined as f, the central radius of curvature of the object side surface of the third lens L3 is R5, the central 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, and the on-axis thickness of the third lens L3 is d5, and the following relationship is satisfied:

[0074] 0.07 < (R5+R6) / (R5-R6) < 0.30 (12)

[0075] 1.20 < f3 / f < 1.83 (13)

[0076] 0.08 < d5 / TTL < 0.11 (14)

[0077] Condition formula (12) limits the shape of the third lens L3, in which range it is helpful to improve imaging quality. Condition formula (13) limits the focal length f3 of the third lens L3, in which range the optical performance of the photographing optical lens 10, 20, 30, 40, 50, 60 can be improved, which is helpful to reduce aberration. Condition formula (14) limits the on-axis thickness d5 of the third lens L3, in which range it is beneficial to control the optical total length TTL of the photographing optical lens 10, 20, 30, 40, 50, 60.

[0078] The focal length of the photographing optical lens is defined as f, the central radius of curvature of the object side surface of the fourth lens L4 is R7, the central 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, and the on-axis thickness of the fourth lens L4 is d7, and the following relationship is satisfied:

[0079] 0.74 < (R7+R8) / (R7-R8) < 0.98 (15)

[0080] -3.56 < f4 / f < -2.31 (16)

[0081] 0.04≤d7 / TTL≤0.06 (17)

[0082] Condition formula (15) limits the shape of the fourth lens L4, within the range, the spherical aberration of the photographing optical lens 10, 20, 30, 40, 50, 60 can be effectively corrected, and the imaging quality is improved. Condition formula (16) limits the focal length f4 of the fourth lens L4, within the range, it is beneficial to improve the optical performance of the photographing optical lens 10, 20, 30, 40, 50, 60. Condition formula (17) limits the on-axis thickness d7 of the fourth lens L4, within the range, the total optical length TTL of the photographing optical lens 10, 20, 30, 40, 50, 60 can be controlled, and it is beneficial to miniaturization design.

[0083] The focal length of the photographing optical lens is defined as f, the on-axis thickness of the fifth lens is d9, and the following relationship is satisfied:

[0084] 0.70≤f5 / f≤0.97 (18)

[0085] 0.19≤d9 / TTL≤0.23 (19)

[0086] Condition formula (18) limits the focal length f5 of the fifth lens L5, within the range, it is beneficial to reduce aberration and improve imaging quality. Condition formula (19) limits the on-axis thickness d9 of the fifth lens L5, within the range, it is beneficial to compress the total optical length TTL of the photographing optical lens 10, 20, 30, 40, 50, 60.

[0087] The focal length of the photographing optical lens is defined as f, the central curvature radius of the object side of the sixth lens L6 is R11, the central curvature radius of the image side of the sixth lens L6 is R12, and the on-axis thickness of the sixth lens L6 is d11, and the following relationship is satisfied:

[0088] 2.76≤(R11+R12) / (R11-R12)≤3.12 (20)

[0089] -1.86≤f6 / f≤-1.09 (21)

[0090] 0.07≤d11 / TTL≤0.09 (22)

[0091] The conditional expression (20) limits the shape of the sixth lens L6, and within this range, the degree of deflection of light passing through the sixth lens L6 can be mitigated, effectively reducing aberration. The conditional expression (21) limits the focal length f6 of the sixth lens L6, and within this range, the sixth lens L6 has appropriate negative refractive power, which is conducive to reducing aberration. The conditional expression (22) limits the on-axis thickness d11 of the sixth lens L6, and within this range, it is conducive to compressing the total track length TTL of the photographing optical lens 10, 20, 30, 40, 50, 60, and achieving an ultra-thin design.

[0092] In this scheme, the image height of the 1.0 field of view of the photographing optical lens 10, 20, 30, 40, 50, 60 is IH, and the following relationship is satisfied:

[0093] 1.60≤TTL / IH≤1.94 (23)

[0094] Within this range, an ultra-thin design of the photographing optical lens 10, 20, 30, 40, 50, 60 can be achieved.

[0095] In this scheme, the F number of the photographing optical lens 10, 20, 30, 40, 50, 60 is FNO, and the following relationship is satisfied:

[0096] 2.0≤FNO≤2.3 (24)

[0097] The conditional expression (24) specifies the F number of the photographing optical lens 10, 20, 30, 40, 50, 60, and within this limit, the photographing optical lens 10, 20, 30, 40, 50, 60 can have a large aperture.

[0098] In this scheme, the first lens L1, 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 plastic. Each lens can also be made of other materials.

[0099] In this scheme, the stop ST of the photographing optical lens 10, 20, 30, 40, 50, 60 is arranged between the second lens L2 and the third lens L3, however, the stop ST is not limited to being arranged between the second lens L2 and the third lens L3, but can also be arranged at other positions. In addition, the photographing optical lens 10, 20, 30, 40, 50, 60 can also be provided with one or more optical elements such as optical filters GF, wherein the optical filter GF can be a glass cover plate or an optical filter (filter). For example, an optical filter can be arranged on the image side of the sixth lens L6.

[0100] The present application provides a camera optical lens 10, 20, 30, 40, 50, 60 with a large aperture, wide angle, ultra-thin and good optical performance, which can control the total optical length TTL of the camera optical lens 10, 20, 30, 40, 50, 60, reasonably distribute the focal length of the lens, moderate the deflection degree of light passing through the lens, effectively correct the astigmatism and distortion, correct the chromatic aberration, reduce the aberration, and improve the imaging effect.

[0101] The camera optical lens 10, 20, 30, 40, 50, 60 of the present application will be described below by examples. The symbols recorded in each example are shown in Table 【1】. The units of focal length, on-axis distance, central curvature radius, on-axis thickness, flip point position, and stationary point position are millimeters.

[0102] TTL: total optical length (axial distance from the object side of the first lens L1 to the imaging surface), unit: millimeter;

[0103] FNO: the ratio of the effective focal length of the camera optical lens to the entrance pupil diameter;

[0104] IH: the image height of 1.0 field of view (i.e. half of the diagonal length of the sensor effective pixel area);

[0105] FOV: the field of view angle of 1.0 field of view (i.e. the field of view angle corresponding to the sensor effective pixel);

[0106] Preferably, the object side and / or the image side of the lens can also be provided with a reverse point and / or a stationary point to meet the high-quality imaging requirements.

[0107] Next, the technical solutions of the present application will be specifically described in six embodiments. At the same time, a comparative embodiment is provided as a reference. When the above conditions are exceeded, the technical effects of the present application cannot be achieved.

[0108] First embodiment:

[0109] Figure 1 is a structural schematic diagram of the camera optical lens 10 in the first embodiment. The design data of the camera optical lens 10 in the first embodiment of the present application is shown below.

[0110] Table 1 lists the central curvature radius R of the object side and the image side of the first lens L1 to the sixth lens L6 constituting the camera optical lens 10 in the first embodiment of the present application, the on-axis thickness of the lens, the on-axis 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).

[0111]

Table 1

[0112]

[0113]

[0114] The meanings of the symbols in the above table are as follows:

[0115] R: radius of curvature of the optical surface, central radius of curvature in the case of a lens; ST: stop;

[0116] R1: central radius of curvature of the object side surface of the first lens L1;

[0117] R2: central radius of curvature of the image side surface of the first lens L1;

[0118] R3: central radius of curvature of the object side surface of the second lens L2;

[0119] R4: central radius of curvature of the image side surface of the second lens L2;

[0120] R5: central radius of curvature of the object side surface of the third lens L3;

[0121] R6: central radius of curvature of the image side surface of the third lens L3;

[0122] R7: central radius of curvature of the object side surface of the fourth lens L4;

[0123] R8: central radius of curvature of the image side surface of the fourth lens L4;

[0124] R9: central radius of curvature of the object side surface of the fifth lens L5;

[0125] R10: central radius of curvature of the image side surface of the fifth lens L5;

[0126] R11: central radius of curvature of the object side surface of the sixth lens L6;

[0127] R12: central radius of curvature of the image side surface of the sixth lens L6;

[0128] R13: radius of curvature of the object side surface of the optical filter GF;

[0129] R14: radius of curvature of the image side surface of the optical filter GF;

[0130] d: on-axis thickness of a lens, on-axis distance between lenses;

[0131] d1: on-axis thickness of the first lens L1;

[0132] d2: on-axis distance from the image side surface of the first lens L1 to the object side surface of the second lens L2;

[0133] d3: on-axis thickness of the second lens L2;

[0134] d4: an on-axis distance from an image-side surface of the second lens L2 to an object-side surface of the third lens L3;

[0135] d5: an on-axis thickness of the third lens L3;

[0136] d6: an on-axis distance from an image-side surface of the third lens L3 to an object-side surface of the fourth lens L4;

[0137] d7: an on-axis thickness of the fourth lens L4;

[0138] d8: an on-axis distance from an image-side surface of the fourth lens L4 to an object-side surface of the fifth lens L5;

[0139] d9: an on-axis thickness of the fifth lens L5;

[0140] d10: an on-axis distance from an image-side surface of the fifth lens L5 to an object-side surface of the sixth lens L6; d11: an on-axis thickness of the sixth lens L6;

[0141] d12: an on-axis distance from an image-side surface of the sixth lens L6 to an object-side surface of the optical filter GF; d13: an on-axis thickness of the optical filter GF;

[0142] d14: an on-axis distance from an image-side surface of the optical filter GF to the image plane Si;

[0143] nd: a refractive index for the d-line (the d-line is green light having a wavelength of 555 nm);

[0144] nd1: a refractive index for the d-line of the first lens L1;

[0145] nd2: a refractive index for the d-line of the second lens L2;

[0146] nd3: a refractive index for the d-line of the third lens L3;

[0147] nd4: a refractive index for the d-line of the fourth lens L4;

[0148] nd5: a refractive index for the d-line of the fifth lens L5;

[0149] nd6: a refractive index for the d-line of the sixth lens L6;

[0150] ndg: a refractive index for the d-line of the optical filter GF;

[0151] vd: an Abbe number;

[0152] vd1: an Abbe number of the first lens L1;

[0153] vd2: an Abbe number of the second lens L2;

[0154] vd3: Abbe number of the third lens L3;

[0155] vd4: Abbe number of the fourth lens L4;

[0156] vd5: Abbe number of the fifth lens L5;

[0157] vd6: Abbe number of the sixth lens L6;

[0158] vg: Abbe number of the optical filter GF.

[0159]

Table 2

[0160]

[0161]

[0162] Note that the aspheric surface of each lens in the present embodiment uses an aspheric surface indicated by the following conditional expression (25), but the specific form of the following conditional expression (25) is only one example, and in fact, the present application is not limited to the aspheric surface polynomial form indicated in the conditional expression (25).

[0163] 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 +

[0164] + A20c 20 + A22c 22 + A24c 24 + A26c 26 + A28c 28 + A30c 30 (25)

[0165] where k is the conic coefficient, A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, A30 are aspheric coefficients. c is the curvature at the center of the optical surface, r is the vertical distance of a point on the aspheric curve from the optical axis, and z is the aspheric depth (the vertical distance between the point on the aspheric surface at a distance of r from the optical axis and the tangent plane tangent to the vertex of the aspheric surface on the optical axis).

[0166] In addition, in the following Table 15, values corresponding to the prescribed parameters in the various conditional expressions of the first embodiment are also listed.

[0167] Figure 2 Fig. 6 shows the field curvature and distortion of light having a wavelength of 555 nm after passing through the camera optical lens 10 of the first embodiment, Figure 2 The field curvature S is the sagittal field curvature, and T is the tangential field curvature. Figure 3 Fig. 7 shows the lateral chromatic aberration of light having a wavelength of 470 nm, 510 nm, 555 nm, 610 nm, and 650 nm after passing through the camera optical lens 10 of the first embodiment. Figure 4 Fig. 8 shows the axial chromatic aberration of light having a wavelength of 470 nm, 510 nm, 555 nm, 610 nm, and 650 nm after passing through the camera optical lens 10 of the first embodiment.

[0168] As shown in Table 15, the first embodiment satisfies the various conditional expressions.

[0169] In the present embodiment, the entrance pupil diameter of the camera optical lens 10 is 0.873 mm, the image height IH of 1.0 field of view is 3.201 mm, the field of view angle of 1.0 field of view is 119.85°, the camera optical lens 10 satisfies the characteristics of having a large aperture, wide-angle, and ultra-thin, the on-axis and off-axis chromatic aberration is fully corrected, and has excellent optical performance.

[0170] Second Embodiment

[0171] Figure 5 Fig. 1 is a structural diagram of the camera optical lens 20 of the second embodiment, the second embodiment is basically the same as the first embodiment, the symbol meanings are the same as the first embodiment, and only the different points are listed below.

[0172] Table 3 and Table 4 show the design data of the camera optical lens 20 of the second embodiment of the present application.

[0173]

Table 3

[0174]

[0175]

[0176]

Table 4

[0177]

[0178]

[0179] In addition, in the following Table 15, values corresponding to the prescribed parameters in the various conditional expressions of the second embodiment are also listed.

[0180] Figure 6 Fig. 6 shows the field curvature and distortion diagram of light rays with a wavelength of 555 nm after passing through the camera optical lens 20 of the second embodiment, Figure 6 The field curvature S is the sagittal field curvature, and T is the tangential field curvature; Figure 7 Fig. 7 shows the lateral chromatic aberration diagram of light rays with a wavelength of 470 nm, 510 nm, 555 nm, 610 nm, and 650 nm after passing through the camera optical lens 20 of the second embodiment. Figure 8 Fig. 8 shows the axial aberration diagram of light rays with a wavelength of 470 nm, 510 nm, 555 nm, 610 nm, and 650 nm after passing through the camera optical lens 20 of the second embodiment.

[0181] As shown in Table 15, the second embodiment satisfies each conditional expression.

[0182] In the present embodiment, the entrance pupil diameter of the camera optical lens 20 is 0.928 mm, the image height IH of 1.0 field of view is 3.184 mm, the field of view FOV of 1.0 field of view is 115.67°, the camera optical lens 20 satisfies the characteristics of large aperture, wide angle, and ultra-thin, the on-axis and off-axis chromatic aberrations are fully corrected, and excellent optical performance is achieved.

[0183] Third Embodiment

[0184] Figure 9 is a structural diagram of the camera optical lens 30 in the third embodiment, the third embodiment is basically the same as the first embodiment, the symbol meanings are the same as the first embodiment, and only the different points are listed below.

[0185] Table 5 and Table 6 show the design data of the camera optical lens 30 of the third embodiment of the present application.

[0186]

Table 5

[0187]

[0188]

Table 6

[0189]

[0190]

[0191] In addition, in the subsequent Table 15, the values corresponding to the parameters in the conditional expressions of various parameters in the third embodiment are also listed.

[0192] Figure 10 Fig. 9 shows the field curvature and distortion diagram of light rays with a wavelength of 555 nm after passing through the camera optical lens 30 of the third embodiment, Figure 10 The field curvature S is the sagittal field curvature, and T is the tangential field curvature;Figure 11 Fig. 6 shows the lateral chromatic aberration diagram of the camera optical lens 30 of the third embodiment after the light with wavelength of 470 nm, 510 nm, 555 nm, 610 nm, 650 nm passes through the camera optical lens 30; Figure 12 Fig. 7 shows the axial aberration diagram of the camera optical lens 30 of the third embodiment after the light with wavelength of 470 nm, 510 nm, 555 nm, 610 nm, 650 nm passes through the camera optical lens 30.

[0193] As shown in Table 15, the third embodiment satisfies each conditional expression.

[0194] In the present embodiment, the entrance pupil diameter of the camera optical lens 30 is 0.716 mm, the image height IH of 1.0 field of view is 3.100 mm, the field of view angle FOV of 1.0 field of view is 129.20°, the camera optical lens 30 satisfies the characteristics of large aperture, wide angle, and ultra-thin, the on-axis and off-axis chromatic aberration is fully corrected, and has excellent optical performance.

[0195] Fourth Embodiment

[0196] Figure 13 Fig. 4 is a structural diagram of the camera optical lens 40 in the fourth embodiment, the fourth embodiment is basically the same as the first embodiment, the symbol meanings are the same as the first embodiment, and only the different points are listed below.

[0197] Table 7 and Table 8 show the design data of the camera optical lens 40 of the fourth embodiment of the present application.

[0198]

Table 7

[0199]

[0200]

Table 8

[0201]

[0202]

[0203] In addition, in the subsequent Table 15, the values corresponding to the parameters in the conditional expressions of various parameters in the fourth embodiment are also listed.

[0204] Figure 14 Fig. 8 shows the field curvature and distortion diagram of the camera optical lens 40 of the fourth embodiment after the light with wavelength of 555 nm passes through the camera optical lens 40, Figure 14 the field curvature S is the sagittal direction field curvature, and T is the meridional direction field curvature; Figure 15 Fig. 9 shows the lateral chromatic aberration diagram of the camera optical lens 40 of the fourth embodiment after the light with wavelength of 470 nm, 510 nm, 555 nm, 610 nm, 650 nm passes through the camera optical lens 40; Figure 16Fig. 6 shows the axial aberration diagram of the light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm and 650 nm after passing through the camera optical lens 40 of the fourth embodiment.

[0205] As shown in Table 15, the fourth embodiment satisfies each conditional expression.

[0206] In the present embodiment, the entrance pupil diameter of the camera optical lens 40 is 1.060 mm, the image height IH of 1.0 field of view is 3.269 mm, the field of view FOV of 1.0 field of view is 109.77°, the camera optical lens 40 satisfies the characteristics of large aperture, wide angle, ultra-thin, the on-axis and off-axis chromatic aberration is fully corrected, and has excellent optical performance.

[0207] Fifth Embodiment

[0208] Figure 17 Fig. 5 is a structural diagram of the camera optical lens 50 in the fifth embodiment, the fifth embodiment is basically the same as the first embodiment, the symbol meanings are the same as the first embodiment, and only the different points are listed below.

[0209] Table 9 and Table 10 show the design data of the camera optical lens 50 of the fifth embodiment of the present application.

[0210]

Table 9

[0211]

[0212]

Table 10

[0213]

[0214]

[0215] In addition, in the subsequent Table 15, the values corresponding to the parameters in the conditional expressions of various parameters in the fifth embodiment are also listed.

[0216] Figure 18 Fig. 6 shows the field curvature and distortion diagram of the light with a wavelength of 555 nm after passing through the camera optical lens 50 of the fifth embodiment, Figure 18 The field curvature S is the sagittal direction field curvature, and T is the tangential direction field curvature; Figure 19 Fig. 7 shows the lateral chromatic aberration diagram of the light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm and 650 nm after passing through the camera optical lens 50 of the fifth embodiment. Figure 20 Fig. 8 shows the axial aberration diagram of the light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm and 650 nm after passing through the camera optical lens 50 of the fifth embodiment.

[0217] As shown in Table 15, the fifth embodiment satisfies each conditional expression.

[0218] In the present embodiment, the entrance pupil diameter of the photographing optical lens 50 is 0.796 mm, the image height IH of 1.0 field of view is 3.268 mm, the field of view FOV of 1.0 field of view is 124.37°, the photographing optical lens 50 satisfies the characteristics of large aperture, wide angle, and ultra-thin, the on-axis and off-axis chromatic aberrations are fully corrected, and the photographing optical lens 50 has excellent optical performance.

[0219] Sixth embodiment

[0220] Figure 21 is a structural schematic diagram of the photographing optical lens 60 in the sixth embodiment, the sixth embodiment is basically the same as the first embodiment, the symbol meanings are the same as those of the first embodiment, and only the different points are listed below.

[0221] Table 11 and Table 12 show the design data of the photographing optical lens 60 in the sixth embodiment of the present application.

[0222]

Table 11

[0223]

[0224]

Table 12

[0225]

[0226]

[0227] In addition, in the subsequent Table 15, the values corresponding to the parameters in the conditional expressions of various parameters in the sixth embodiment are also listed.

[0228] Figure 22 shows the field curvature and distortion schematic diagram of light with a wavelength of 555 nm after passing through the photographing optical lens 60 in the sixth embodiment, Figure 22 the field curvature S is the sagittal direction field curvature, and T is the tangential direction field curvature; Figure 23 shows the lateral chromatic aberration schematic diagram of light with a wavelength of 470 nm, 510 nm, 555 nm, 610 nm, and 650 nm after passing through the photographing optical lens 60 in the sixth embodiment. Figure 24 shows the axial chromatic aberration schematic diagram of light with a wavelength of 470 nm, 510 nm, 555 nm, 610 nm, and 650 nm after passing through the photographing optical lens 60 in the sixth embodiment.

[0229] As shown in Table 15, the sixth embodiment satisfies each conditional expression.

[0230] In the embodiment, the entrance pupil diameter of the photographing optical lens 60 is 0.918 mm, the image height IH of 1.0 field of view is 3.131 mm, the field of view angle FOV of 1.0 field of view is 117.33°, the photographing optical lens 60 meets the characteristics of large aperture, wide angle, and ultra-thin, the on-axis and off-axis chromatic aberrations are fully corrected, and the photographing optical lens 60 has excellent optical performance.

[0231] Comparative embodiment

[0232] Figure 25 is a structural schematic diagram of the photographing optical lens 70 in the comparative embodiment, the symbol meanings of the comparative embodiment are the same as those of the first embodiment, and only the different points are listed below.

[0233] Tables 13 and 14 show the design data of the photographing optical lens 70 in the comparative embodiment.

[0234]

Table 13

[0235]

[0236]

Table 14

[0237]

[0238]

[0239] In addition, in the subsequent Table 15, the values corresponding to the parameters specified in the condition formula are also listed for various parameters and conditions in the comparative embodiment.

[0240] Figure 26 shows the field curvature and distortion schematic diagram of light with a wavelength of 555 nm passing through the photographing optical lens 70 in the comparative embodiment, Figure 26 the field curvature S is the sagittal direction field curvature, and T is the tangential direction field curvature; Figure 27 shows the lateral chromatic aberration schematic diagram of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm, and 650 nm passing through the photographing optical lens 70 in the comparative embodiment. Figure 28 shows the axial chromatic aberration schematic diagram of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm, and 650 nm passing through the photographing optical lens 70 in the comparative embodiment.

[0241] As shown in Table 15, the values corresponding to the parameters specified in the condition formula are also listed for various parameters in the comparative embodiment. Obviously, the photographing optical lens 70 in the comparative embodiment does not meet the condition formula -0.40≤(R1+R2) / (R1-R2)≤0.00.

[0242] In the embodiment, the entrance pupil diameter of the photographing optical lens 70 is 0.852 mm, the 1.0 image height is 3.072 mm, the 1.0 field of view is 121.06°, the photographing optical lens 70 meets the characteristics of large aperture, wide angle, and ultra-thin, the on-axis and off-axis chromatic aberrations are fully corrected, and the photographing optical lens 70 has excellent optical performance.

[0243] Table 15

[0244]

[0245]

[0246] The photographing optical lens provided by the above embodiments of the present application is described in detail, the principles and embodiments of the present application are described by using specific examples, the above embodiments are only used to help understand the idea of the present application, and there will be changes in the specific embodiments and application range, and the content of the specification should not be understood as a limitation of the present application.

Claims

1. A camera optical lens characterized in that, The camera optical lens comprises six lenses in sequence from the object side to the image side: a first lens with negative refractive power, a second lens with positive 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 with negative refractive power; the object side surface of the first lens is concave at the near axis, and the image side surface of the first lens is concave at the near axis; the object side surface of the second lens is convex at the near axis, and the image side surface of the second lens is concave at the near axis; the object side surface of the third lens is convex at the near axis, and the image side surface of the third lens is convex at the near axis; the object side surface of the fourth lens is concave at the near axis, and the image side surface of the fourth lens is concave at the near axis; the object side surface of the fifth lens is concave at the near axis, and the image side surface of the fifth lens is convex at the near axis; the object side surface of the sixth lens is convex at the near axis, and the image side surface of the sixth lens is concave at the near axis; the central radius of curvature of the object side surface of the first lens is R1, the central radius of curvature of the image side surface of the first lens is R2, the focal length of the first lens is f1, the on-axis thickness of the first lens is d1, the on-axis distance between the image side surface of the first lens and the object side surface of the second lens is d2, the on-axis thickness of the second lens is d3, the central radius of curvature of the object side surface of the fifth lens is R9, the central radius of curvature of the image side surface of the fifth lens is R10, the focal length of the fifth lens is f5, the focal length of the sixth lens is f6, the total optical length of the camera optical lens is TTL, and the following relationships are satisfied: -0.40≤(R1+R2) / (R1-R2)≤0.00; 0.20≤(d1+d2+d3) / TTL≤0.30; -1.80≤(f5-f6) / f1≤-1.20; 1.00≤(R9+R10) / (R9-R10)≤1.

20.

2. The camera optical lens according to claim 1, characterized in that, The focal length of the second lens is f2, the focal length of the third lens is f3, and the following relationship is satisfied: 1.20≤f2 / f3≤3.

00.

3. The camera optical lens according to claim 1, wherein, The image height of the camera optical lens at a 1.0 field of view is IH, the focal length of the camera optical lens is f, and the following relationship is satisfied: 0.80≤IH*f / TTL≤1.

50.

4. The camera optical lens according to claim 1, characterized in that, The focal length of the camera optical lens is f, and the following relationships are also satisfied: -1.67≤f1 / f≤-1.43; 0.05≤d1 / TTL≤0.

09.

5. The camera optical lens according to claim 1, wherein, The focal length of the camera optical lens is f, the focal length of the second lens is f2, and the following relationships are satisfied: -4.02≤(R3+R4) / (R3-R4)≤-2.03; 2.20≤f2 / f≤4.28; 0.10≤d3 / TTL≤0.

14.

6. The camera optical lens according to claim 1, characterized in that, The focal length of the camera optical lens is f, the central radius of curvature of the object side surface of the third lens is R5, the central radius of curvature of the image side surface of the third lens is R6, the focal length of the third lens is f3, the on-axis thickness of the third lens is d5, and the following relationships are satisfied: 0.07≤(R5+R6) / (R5-R6)≤0.30; 1.20≤f3 / f≤1.83; 0.08≤d5 / TTL≤0.

11.

7. The camera optical lens according to claim 1, wherein, The focal length of the camera optical lens is f, the central curvature radius of the object side surface of the fourth lens is R7, the central curvature radius of the image side surface of the fourth lens is R8, the focal length of the fourth lens is f4, the on-axis thickness of the fourth lens is d7, and the following relationship is satisfied: 0.74≤(R7+R8) / (R7-R8)≤0.98; -3.56≤f4 / f≤-2.31; 0.04≤d7 / TTL≤0.

06.

8. The camera optical lens according to claim 1, characterized in that, The focal length of the camera optical lens is f, the on-axis thickness of the fifth lens is d9, and the following relationship is satisfied: 0.70≤f5 / f≤0.97; 0.19≤d9 / TTL≤0.

23.

9. The camera optical lens according to claim 1, characterized in that, The focal length of the camera optical lens is f, the central curvature radius of the object side surface of the sixth lens is R11, the central curvature radius of the image side surface of the sixth lens is R12, the on-axis thickness of the sixth lens is d11, and the following relationship is satisfied: 2.76≤(R11+R12) / (R11-R12)≤3.12; -1.86≤f6 / f≤-1.09; 0.07≤d11 / TTL≤0.

09.

10. The camera optical lens according to claim 1, characterized in that, The image height of 1.0 field of view of the camera optical lens is IH, and the following relationship is satisfied: 1.60≤TTL / IH≤1.94.

Images