CAMERA OPTICAL LENS

Abstract

The present application relates to the field of optical lenses and discloses a camera optical lens, including, in order from an objective surface to an image surface: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The following relationship expressions are satisfied: 0.95≤f4/f≤1.40; 0.30≤d11/d12≤1.00; 3.00≤R1/R2≤12.00; 1.20≤(R9+R10)/(R9−R10)≤3.20. The camera optical lens has excellent optical performance while satisfying the design requirements of large aperture and ultra-wide angle.

Description

TECHNICAL FIELD

The present application relates to the field of optical lenses, in particular to a camera optical lens applicable to handheld terminal devices such as smartphones, digital cameras, and sports cameras, as well as camera devices such as monitors, and PC lenses.

BACKGROUND

In recent years, with the rise of smartphones, the demand for compact camera lenses has been increasing. Typically, camera lenses use photosensitive devices, either Charge Coupled Devices (CCD) or Complementary Metal-Oxide-Semiconductor Sensors (CMOS Sensors). Due to the advancements in semiconductor manufacturing technology, the pixel size of photosensitive devices has been reduced. Combined with the current trend in electronic products favoring excellent functionality in a compact and lightweight form, small-sized camera lenses with excellent imaging quality have unmistakably become mainstream in today's market. To achieve optimal imaging quality, conventional lenses used in smartphone cameras often adopt three-element or four-element lens structures. With the ongoing technological advancements and the increasing diversity of user demands, lens designs incorporating five, six, or seven elements have gradually become prevalent. There is an urgent need for wide-angle camera lenses with excellent optical characteristics, ultra-thin designs, and efficient correction of chromatic aberrations.

SUMMARY

In response to the above problems, an object of the present application is to provide a camera optical lens capable of satisfying the requirements of ultra-wide angle while obtaining a large aperture with good imaging performance.

In order to solve the above technical problems, an embodiment of the present application provides a camera optical lens, comprising in order from an objective side to an image side:

• • a first lens having a negative refractive force;
  • a second lens having a negative refractive force;
  • a third lens having a positive refractive force;
  • a fourth lens having a positive refractive force;
  • a fifth lens having a negative refractive force;
  • a sixth lens having a positive refractive force; and
  • a seventh lens having a negative refractive force;
  • a focal length of the camera optical lens is f; a focal length of the fourth lens is f4; an on-axis thickness of the sixth lens is d11; an on-axis distance from an image surface of the sixth lens to an objective surface of the seventh lens is d12; a radius of curvature of an objective surface of the first lens is R1; a radius of curvature of an image surface of the first lens is R2; a radius of curvature of an objective surface of the fifth lens is R9; a radius of curvature of an image surface of the fifth lens is R10, and the following relationship expressions are satisfied:

$0.95\le f4/f\le 1.4;$ $0.3\le d11/d12\le 1.;$ $3.\le R1/R2\le 12\text{.00};$ $1.2\le \left(R9+R10\right)/\left(R9-R10\right)\le 3.2.$

In one embodiment, an on-axis thickness of the fourth lens is d7; an on-axis distance from an image surface of the fourth lens to the objective surface of the fifth lens is d8, and the following relationship expression is satisfied:

$8.00\le d7/d8\le 25.2.$

In one embodiment, a focal length of the sixth lens is f6, and the following relationship expression is satisfied:

$3.00\le f6/f\le 8.00.$

In one embodiment, the objective surface of the first lens is convex at a proximal-axis position, and an image surface of the first lens is concave at a proximal-axis position; a focal length of the first lens is f1, a radius of curvature of the objective surface of the first lens is R1; a radius of curvature of the image surface of the first lens is R2; an on-axis thickness of the first lens is d1; a total track length of the camera optical lens is TTL, and the following relationship expressions are satisfied:

$-7.70\le f1/f\le -1.95;$ $0.03\le d1/\mathrm{TTL}\le 0.75.$

In one embodiment, an objective surface of the second lens is concave at a proximal-axis position, and an image surface of the second lens is concave at a proximal-axis position; a focal length of the second lens is f2; a radius of curvature of the objective surface of the second lens is R3; a radius of curvature of the image surface of the second lens is R4; an on-axis thickness of the second lens is d3; a total track length of the camera optical lens is TTL, and the following relationship expressions are satisfied:

$-5.83\le f2/f\le -1.23;$ $0.31\le \left(R3+R4\right)/\left(R3-R4\right)\le 0\text{.99};$ $0.05\le d3/\mathrm{TTL}\le 0\text{.31}.$

In one embodiment, an objective surface of the third lens is convex at a proximal-axis position; a focal length of the third lens is f3; a radius of curvature of the objective surface of the third lens is R5; a radius of curvature of an image surface of the third lens is R6; an on-axis thickness of the third lens is d5; a total track length of the camera optical lens is TTL, and the following relationship expressions are satisfied:

$0.72\le f3/f\le 2\text{.89};$ $-2.29\le \left(R5+R6\right)/\left(\mathrm{R5}-R6\right)\le -0\text{.61};$ $0.05\le d5/\mathrm{TTL}\le 0.22.$

In one embodiment, an objective surface of the fourth lens is convex at a proximal-axis position, and an image surface of the fourth lens is convex at a proximal-axis position; a radius of curvature of the objective surface of the fourth lens is R7, and a radius of curvature of the image surface of the fourth lens is R8; an on-axis thickness of the fourth lens is d7; a total track length of the camera optical lens is TTL, and the following relationship expressions are satisfied:

$0.08\le \left(R7+R8\right)/\left(R7-R8\right)\le 0\text{.34};$ $0.02\le d7/\mathrm{TTL}\le 0\text{.11}.$

In one embodiment, the objective surface of the fifth lens is convex at a proximal-axis position, and the image surface of the fifth lens is concave at a proximal-axis position; a focal length of the fifth lens is f5; an on-axis thickness of the fifth lens is d9; a total track length of the camera optical lens is TTL, and the following relationship expressions are satisfied:

$-7.29\le f5/f\le -1.06;$ $0.01<d9/\mathrm{TTL}<0.04.$

In one embodiment, the image surface of the sixth lens is convex at a proximal-axis position; a radius of curvature of an objective surface of the sixth lens is R11; a radius of curvature of the image surface of the sixth lens is R12; a total track length of the camera optical lens is TTL, and the following relationship expressions are satisfied:

$-0.34\le \left(R11+R12\right)/\left(R11-R12\right)\le 4\text{.55};$ $0.01\le d11/\mathrm{TTL}\le 0.08.$

In one embodiment, the objective surface of the seventh lens is convex at a proximal-axis position, and an image surface of the seventh lens is concave at a proximal-axis position; a focal length of the seventh lens is f7; a radius of curvature of the objective surface of the seventh lens is R13; the radius of curvature of the image surface of the seventh lens is R14; an on-axis thickness of the seventh lens is d13; a total track length of the camera optical lens is TTL, and the following relationship expressions are satisfied:

$-7.64\le f7/f\le -1.18;$ $0.91\le \left(R13+R14\right)/\left(R13-R14\right)\le 5.68;$ $0.01\le d13/\mathrm{TTL}\le 0.06.$

In one embodiment, a field of view of the camera optical lens is FOV, and the following relationship expression is satisfied:

$\mathrm{FOV}\ge 130.°.$

In one embodiment, an aperture value of the camera optical lens is FNO, and the following relationship expression is satisfied:

$\mathrm{FNO}\le 2.6.$

In one embodiment, the first lens is made of glass material.

In one embodiment, the fourth lens is made of glass material.

The beneficial effects of the present application lie in: the camera optical lens of the present application has excellent optical performance and satisfies the design requirements of large aperture and ultra-wide angle. It is particularly suitable for smartphone camera lens assemblies and WEB camera lenses including high-pixel camera elements such as CCD, CMOS, and the like.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural schematic diagram of a camera optical lens according to the first embodiment of the present application.

FIG. 2 is a schematic diagram showing the axial aberration of the camera optical lens shown in FIG. 1.

FIG. 3 is a schematic diagram showing the magnification chromatic aberration of the camera optical lens shown in FIG. 1.

FIG. 4 is a schematic diagram showing the field curvature and distortion of the camera optical lens shown in FIG. 1.

FIG. 5 is a structural schematic diagram of the camera optical lens according to the second embodiment of the present application.

FIG. 6 is a schematic diagram showing the axial aberration of the camera optical lens shown in FIG. 5.

FIG. 7 is a schematic diagram showing the magnification chromatic aberration of the camera optical lens shown in FIG. 5.

FIG. 8 is a schematic diagram showing the field curvature and distortion of the camera optical lens shown in FIG. 5.

FIG. 9 is a structural schematic diagram of the camera optical lens according to the third embodiment of the present application.

FIG. 10 is a schematic diagram showing the axial aberration of the camera optical lens shown in FIG. 9.

FIG. 11 is a schematic diagram showing the magnification chromatic aberration of the camera optical lens shown in FIG. 9.

FIG. 12 is a schematic diagram showing the field curvature and distortion of the camera optical lens shown in FIG. 9.

FIG. 13 is a structural schematic diagram of the camera optical lens according to the fourth embodiment of the present application.

FIG. 14 is a schematic diagram showing the axial aberration of the camera optical lens shown in FIG. 13.

FIG. 15 is a schematic diagram showing the magnification chromatic aberration of the camera optical lens shown in FIG. 13.

FIG. 16 is a schematic diagram showing the field curvature and distortion of the camera optical lens shown in FIG. 13.

FIG. 17 is a structural schematic diagram of the camera optical lens according to the fifth embodiment of the present application.

FIG. 18 is a schematic diagram showing the axial aberration of the camera optical lens shown in FIG. 17.

FIG. 19 is a schematic diagram showing the magnification chromatic aberration of the camera optical lens shown in FIG. 17.

FIG. 20 is a schematic diagram showing the field curvature and distortion of the camera optical lens shown in FIG. 17.

FIG. 21 is a structural schematic diagram of the camera optical lens according to a comparison example of the present application.

FIG. 22 is a schematic diagram showing the axial aberration of the camera optical lens shown in FIG. 21.

FIG. 23 is a schematic diagram showing the magnification chromatic aberration of the camera optical lens shown in FIG. 21.

FIG. 24 is a schematic diagram showing the field curvature and distortion of the camera optical lens shown in FIG. 21.

DETAILED DESCRIPTION OF THE EMBODIMENTS

In order to make the objects, technical solutions, and advantages of the present application clearer, various embodiments of the present application will be described in detail below in connection with the accompanying drawings. However, those of ordinary skill in the art can understand that in the various embodiments of the present application, a number of technical details have been proposed in order to enable the reader to better understand the present application, and even without these technical details and various variations and modifications based on the following various embodiments, the technical solution claimed to be protected by the present application can be realized.

First Embodiment

As shown in the accompanying drawings, the present application provides a camera optical lens 10. FIG. 1 shows a camera optical lens 10 according to the first embodiment of the present application, and the camera optical lens 10 includes seven lenses. Specifically, the camera optical lens 10, in order from an objective side to an image side, includes a first lens L1, a second lens L2, a third lens L3, an aperture S1, a fourth lens L4, a fifth lens L5, a sixth lens L6, a seventh lens L7, and an image surface Si. An optical element such as an optical filter GF may be provided between the seventh lens L7 and the image surface Si.

In this embodiment, the first lens L1 and the fourth lens L4 are made of glass material. The second lens L2, the third lens L3, the fifth lens L5, the sixth lens L6, and the seventh lens L7 are made of plastic materials.

It is defined that a focal length of the entire camera optical lens is f, and a focal length of the fourth lens L4 is f4. 0.95≤f4/f≤1.40, in which a ratio of the focal length of the fourth lens L4 to the total focal length of the system is specified, which effectively balances the amount of field curvature of the system, so that the field curvature of the center field of view is offset by less than 0.02 mm.

It is defined that an on-axis thickness of the sixth lens L6 is d11, and an on-axis distance from an image surface of the sixth lens L6 to an objective surface of the seventh lens L7 is d12. The following relationship expression is satisfied: 0.30≤d11/d12≤1.00, in which a ratio of a center thickness of the sixth lens L6 and an air spacing from the sixth lens L6 to the seventh lens L7 (i.e., the on-axis thickness of the sixth lens L6 to the air spacing of the sixth lens L7) is specified. Within the range of the relationship expression, it is conducive to reducing the difficulty of assembly in the actual production process.

It is defined that a radius of curvature of an objective surface of the first lens L1 is R1, and a radius of curvature of an image surface of the first lens L1 is R2. The following relationship expression is satisfied: 3.00≤R1/R2≤12.00, in which the shape of the first lens L1 is specified, which is conducive to buffering changes in the angle of incidence of light rays from a large angle of view, so that the light ray can propagate smoothly in an optical imaging mirror group. Besides, it facilitates the processing of the lenses and the lens assembly.

It is defined that a radius of curvature of an objective surface of the fifth lens L5 is R9, and a radius of curvature of an image surface of the fifth lens L5 is R10. The following relationship expression is satisfied: 1.20≤(R9+R10)/(R9−R10)≤3.20, in which the shape of the fifth lens L5 is specified. Within the range of the relationship expression, the degree of deflection of the light rays passing through the lenses can be moderated, thereby correcting the chromatic aberration efficiently, in which the chromatic aberration |LC|≤5.2 μm.

In this embodiment, an on-axis thickness of the fourth lens L4 is d7, and an on-axis distance from an image surface of the fourth lens L4 to an objective surface of the fifth lens L5 is d8, and satisfies the following relationship expression: 8.00≤d7/d8≤25.20. A ratio of the center thickness of the fourth lens L4 to the air spacing from the fourth lens L4 to the fifth lens L5 is specified, which within the range of relationship expressions helps to compress the total length of the optical system.

In this embodiment, a focal length of the camera optical lens is f, and a focal length of the sixth lens L6 is f6. The following relationship expression is satisfied: 3.00≤f6/f≤8.00, in which a ratio of the sixth lens L6 to the total focal length of the system is specified. By reasonably allocating the optical focal length of the distribution system, the system is made to have better imaging quality and lower sensitivity.

In this embodiment, it is defined that the focal length of the camera optical lens is f, and the focal length of the first lens L1 is f1. The following relationship expression is satisfied: −7.70≤f1/f≤−1.95, in which a negative refractive force of the first lens L1 is specified. When the negative refractive force exceeds the upper limit of the specified value, although it is conducive to the lens developing towards ultra-thinness, the negative refractive force of the first lens L1 will be too strong, and it will be difficult to make up for the aberration and other problems. Besides, it is not conducive to the development of the lens toward wide-angle. On the contrary, when the lower limit is exceeded, the negative refractive force of the first lens L1 becomes too weak, and it is difficult for the lens to develop toward ultra-thinness. In an embodiment, −4.82≤f1/f≤−2.44.

In this embodiment, the objective surface of the first lens L1 is convex at a proximal-axis position, the image surface thereof is concave at a proximal-axis position, and the first lens L1 has a negative refractive force.

It is defined that an on-axis thickness of the first lens L1 is d1 and a total track length of the camera optical lens is TTL. The following relationship expression is satisfied: 0.03≤d1/TTL≤0.75, which is conducive to realizing ultra-thinness. In an embodiment, 0.04≤d1/TTL≤0.60.

In this embodiment, it is defined that the focal length of the camera optical lens is f, and the focal length of the second lens L2 is f2. The following relationship expression is satisfied: −5.83≤f2/f≤−1.23, which is conducive to the system's ability to obtain a well-balanced field curvature in order to efficiently improve the image quality. In an embodiment, −3.64≤f2/f≤−1.54.

It is defined that a radius of curvature of an objective surface of the second lens L2 is R3, and a radius of curvature of an image surface of the second lens L2 is R4, the following relationship expression is satisfied: 0.31≤(R3+R4)/(R3−R4)≤0.99, in which the shape of the second lens L2 is specified. Within the range, it is conducive to compensating for on-axis chromatic aberration with the development of lenses towards ultra-thin wide angle. In an embodiment, 0.50≤(R3+R4)/(R3−R4)≤0.79.

In this embodiment, the objective surface of the second lens L2 is concave at a proximal-axis position, the image surface is concave at a proximal-axis position, and the second lens L2 has a negative refractive force.

It is defined that an on-axis thickness of the second lens L2 is d3, and a total track length of the camera optical lens is TTL. The following relationship expression is satisfied: 0.05≤d3/TTL≤0.31, which is conducive to realizing ultra-thinness. In an embodiment, 0.09≤d3/TTL≤0.25.

In this embodiment, the focal length of the camera optical lens is defined as f, and a focal length of the third lens L3 is f3. The following relationship expression is satisfied: 0.72≤f3/f≤2.89. Through the reasonable distribution of the optical focal length, the system is made to have better imaging quality and lower sensitivity. In an embodiment, 1.15≤f3/f≤2.31.

It is defined that a radius of curvature of an objective surface of the third lens L3 is R5, and a radius of curvature of an image surface of the third lens L3 is R6. The following relationship expression is satisfied: −2.29≤(R5+R6)/(R5−R6)≤−0.61, in which the shape of the third lens L3 is specified. Within the range, it is conducive to compensating for the aberration of the off-axis drawing angle and other problems with the development towards ultra-thinness and wide-angle. In an embodiment, −1.43≤(R5+R6)/(R5−R6)≤−0.77.

In this embodiment, the objective surface of the third lens L3 is convex at a proximal-axis position, the image surface is convex at a proximal-axis position, and the third lens L3 has a positive refractive force. In other embodiments, the image surface of the third lens L3 may also be set to other concave and convex distributions.

It is defined that an on-axis thickness of the third lens L3 is d5, and a total track length of the camera optical lens is TTL. The following relationship expression is satisfied: 0.05≤d5/TTL≤0.22, which is conducive to realizing ultra-thinness. In an embodiment, 0.08≤d5/TTL≤0.18.

In this embodiment, it is defined that a radius of curvature of an objective surface of the fourth lens L4 is R7, and a radius of curvature of an image surface of the fourth lens L4 is R8. The following relationship expression is satisfied: 0.08≤(R7+R8)/(R7−R8)≤0.34, in which the shape of the fourth lens L4 is specified. Within the range, it is conducive to compensating for the aberration of the off-axis drawing angle and other problems with the development towards ultra-thinness and wide-angle. In an embodiment, 0.13≤(R7+R8)/(R7−R8)≤0.27.

In this embodiment, the objective surface of the fourth lens L4 is convex at a proximal-axis position, the image surface is convex at a proximal-axis position, and the fourth lens L4 has a positive refractive force.

It is defined that an on-axis thickness of the fourth lens L4 is d7 and the total track length of the camera optical lens is TTL. The following relationship expression is satisfied: 0.02≤d7/TTL≤0.11, which is conducive to realizing ultra-thinness. In an embodiment, 0.03≤d7/TTL≤0.09.

In this embodiment, it is defined that the focal length of the camera optical lens is f, and the focal length of the fifth lens L5 is f5. The following relationship expression is satisfied: −7.29≤f5/f≤−1.06, in which the negative refractive force of the fifth lens L5 is specified. When the negative refractive force exceeds the upper limit of the specified value, although it is conducive to the lens to be developed towards ultra-thinness, the negative refractive force of the fifth lens L5 will be too strong, and it is difficult to make up for the aberration and other problems. Besides, it is not conducive to the development of the lens toward wide-angle. On the contrary, when the lower limit is exceeded, the negative refractive force of the fifth lens L5 becomes too weak, and it is difficult for the lens to develop toward ultra-thinness. In an embodiment, −4.55≤f5/f≤−1.32.

In this embodiment, the objective surface of the fifth lens L5 is convex at a proximal-axis position, the image surface is concave at a proximal-axis position, and the fifth lens L5 has a negative refractive force.

It is defined that an on-axis thickness of the fifth lens L5 is d9, and the total track length of the camera optical lens is TTL. The following relationship expression is satisfied: 0.01≤d9/TTL≤0.04, which is conducive to realizing ultra-thinness. In an embodiment, 0.01≤d9/TTL≤0.03.

In this embodiment, it is defined that a radius of curvature of an objective surface of the sixth lens L6 is R11, and a radius of curvature of the image surface of the sixth lens L6 is R12. The following relationship expression is satisfied: −0.34≤(R11+R12)/(R11−R12)≤4.55, in which the shape of the sixth lens L6 is specified. Within the range, it is conducive to compensating for the aberration of the off-axis drawing angle and other problems with the development towards ultra-thinness and wide-angle. In an embodiment, −0.21≤(R11+R12)/(R11−R12)≤3.64.

In this embodiment, the objective surface of the sixth lens L6 is convex at a proximal-axis position, the image surface is convex at a proximal-axis position, and the sixth lens L6 has a positive refractive force. In other embodiments, the objective surface of the sixth lens L6 may also be set to other concave and convex distributions.

It is defined that an on-axis thickness of the sixth lens L6 is d11, and the total track length of the camera optical lens is TTL. The following relationship expression is satisfied: 0.01≤d11/TTL≤0.08, which is conducive to realizing ultra-thinness. In an embodiment, 0.01≤d11/TTL≤0.06.

In this embodiment, it is defined that the focal length of the camera optical lens is f, and a focal length of the seventh lens L7 is f7. The following relationship expression is satisfied: −7.64≤f7/f≤−1.18, in which the negative refractive force of the seventh lens L7 is specified. When the negative refractive force exceeds the upper limit of the specified value, although it is conducive to the lens developing towards ultra-thinness, the negative refractive force of the seventh lens L7 will be too strong, and it will be difficult to make up for the aberration and other problems. Besides, it is not conducive to the development of the lens toward wide-angle. On the contrary, when the lower limit is exceeded, the negative refractive force of the seventh lens L7 becomes too weak, and it is difficult for the lens to develop toward ultra-thinness. In an embodiment, 4.77≤f7/f≤−1.48.

A radius of curvature of an objective surface of the seventh lens L7 is R13, and a radius of curvature of an image surface of the seventh lens L7 is R14. The following relationship expression is satisfied: 0.91≤(R13+R14)/(R13−R14)≤5.68, in which the shape of the sixth lens L6 is specified. Within the range, it is conducive to compensating for the aberration of the off-axis drawing angle and other problems with the development of ultra-thinness and wide-angle. In an embodiment, 1.46≤(R13+R14)/(R13−R14)≤4.54.

In this embodiment, the objective surface of the seventh lens L7 is convex at a proximal-axis position, the image surface is concave at a proximal-axis position, and the seventh lens L7 has a negative refractive force.

An on-axis thickness of the seventh lens L7 is d13, and the total track length of the camera optical lens has TTL. The following relationship expression is satisfied: 0.01≤d13/TTL≤0.06, which is conducive to realizing ultra-thinness. In an embodiment, 0.02≤d13/TTL≤0.05.

The camera optical lens 10 of the present application will be described below with examples. The symbols recorded in each example are shown below. The units of the focal length, the on-axis distance, the radius of curvature, the on-axis thickness, the position of the inflection point, and the position of the stationary point are in mm.

TTL: total track length (on-axis distance from the objective surface to the image surface of the first lens L1) in mm;

In an embodiment, the objective surface and/or image surface of the lens may also be provided with a reverse curvature point and/or a stationary point to meet high-quality imaging requirements, as described below for specific implementable embodiments.

Tables 1 and 2 show the design data of the camera optical lens 10 according to the first embodiment of the present application.

	TABLE 1
	R	d	nd	vd
S1	∞	d0=	−14.700
R1	38.699	d1=	1.386	nd1	1.6385	v1	55.47
R2	6.239	d2=	4.507
R3	−40.000	d3=	4.768	nd2	1.6610	v2	20.53
R4	8.127	d4=	0.200
R5	4.013	d5=	3.450	nd3	1.6153	v3	25.94
R6	−420.689	d6=	0.449
R7	7.195	d7=	1.728	nd4	1.6192	v4	63.85
R8	−4.543	d8=	0.115
R9	14.177	d9=	0.620	nd5	1.6610	v5	20.53
R10	3.636	d10=	0.747
R11	181.856	d11=	1.056	nd6	1.5346	v6	55.69
R12	−9.665	d12=	1.599
R13	4.691	d13=	0.884	nd7	1.6153	v7	25.94
R14	2.731	d14=	0.407
R15	∞	d15=	0.300	ndg	1.5233	vg	54.52
R16	∞	d16=	0.959

The meaning of each symbol is as follows.

• • S1: aperture;
  • R: radius of curvature of the optical surface, and center radius of curvature in the case of a lens;
  • R1: radius of curvature of the objective surface of the first lens L1;
  • R2: radius of curvature of the image surface of the first lens L1;
  • R3: radius of curvature of the objective surface of the second lens L2;
  • R4: radius of curvature of the image surface of the second lens L2;
  • R5: radius of curvature of the objective surface of the third lens L3;
  • R6: radius of curvature of the image surface of the third lens L3;
  • R7: radius of curvature of the objective surface of the fourth lens L4;
  • R8: radius of curvature of the image surface of the fourth lens L4;
  • R9: radius of curvature of the objective surface of the fifth lens L5;
  • R10: radius of curvature of the image surface of the fifth lens L5;
  • R11: radius of curvature of the objective surface of the sixth lens L6;
  • R12: radius of curvature of the image surface of the sixth lens L6;
  • R13: radius of curvature of the objective surface of the seventh lens L7;
  • R14: radius of curvature of the image surface of the seventh lens L7;
  • R15: radius of curvature of the objective surface of the optical filter GF;
  • R16: radius of curvature of the image surface of the optical filter GF;
  • d: on-axis thickness of the lens and the on-axis distance between the lens;
  • d0: on-axis distance from the aperture S1 to the objective surface of the first lens L1;
  • d1: on-axis thickness of the first lens L1;
  • d2: on-axis distance from the image surface of the first lens L1 to the objective surface of the second lens L2;
  • d3: on-axis thickness of the second lens L2;
  • d4: on-axis distance from the image surface of the second lens L2 to the objective surface of the third lens L3;
  • d5: on-axis thickness of the third lens L3;
  • d6: on-axis distance from the image surface of the third lens L3 to the objective surface of the fourth lens L4;
  • d7: on-axis thickness of the fourth lens L4;
  • d8: on-axis distance from the image surface of the fourth lens L4 to the objective surface of the fifth lens L5;
  • d9: on-axis thickness of the fifth lens L5;
  • d10: on-axis distance from the image surface of the fifth lens L5 to the objective surface of the sixth lens L6;
  • d11: on-axis thickness of the sixth lens L6;
  • d12: on-axis distance from the image surface of the sixth lens L6 to the objective surface of the seventh lens L7;
  • d13: on-axis thickness of the seventh lens L7;
  • d14: on-axis distance from the image surface of the seventh lens L7 to the objective surface of the optical filter GF;
  • d15: on-axis thickness of the optical filter GF;
  • d16: on-axis distance from the image surface of the optical filter GF to the image surface;
  • nd: refractive index of the line d (the line d is green light with a wavelength of 550 nm);
  • nd1: refractive index of the line d of the first lens L1;
  • nd2: refractive index of the line d of the second lens L2;
  • nd3: refractive index of the line d of the third lens L3;
  • nd4: refractive index of the line d of the fourth lens L4;
  • nd5: refractive index of the line d of the fifth lens L5;
  • nd6: refractive index of the line d of the sixth lens L6;
  • nd7: refractive index of line d of the seventh lens L7;
  • ndg: refractive index of line d of the optical filter GF;
  • vd: Abbe number;
  • v1: Abbe number of the first lens L1;
  • v2: Abbe number of the second lens L2;
  • v3: Abbe number of the third lens L3;
  • v4: Abbe number of the fourth lens LA;
  • v5: Abbe number of the fifth lens L5;
  • v6: Abbe number of the sixth lens L6;
  • v7: Abbe number of the seventh lens L7;
  • vg: Abbe number of the optical filter GF.

Table 2 illustrates the aspheric data of each lens in the camera optical lens 10 according to the first embodiment of the present application.

	TABLE 2
	Cone Coefficient	Aspheric Coefficient
	k	A4	A6	A8	A10	A12
R1	0.000E+00
R2	0.000E+00
R3	4.491E+01	1.791E−03	−7.379E−05	4.909E−06	−3.296E−07	1.820E−08
R4	−1.898E+00	1.005E−02	−1.423E−03	6.767E−04	−2.182E−04	5.587E−05
R5	4.571E−01	3.399E−03	−1.253E−03	3.695E−04	−8.297E−05	2.019E−05
R6	9.500E+01	−8.704E−03	−9.645E−04	5.093E−03	−5.165E−03	3.099E−03
R7	−5.588E+00	−1.064E−02	−1.501E−04	1.490E−03	−1.322E−03	5.836E−04
R8	−1.419E+01	−2.977E−02	1.042E−02	−4.013E−03	1.037E−03	−1.647E−04
R9	2.430E+01	−2.737E−02	8.129E−03	−3.222E−03	1.073E−03	−2.910E−04
R10	−6.191E+00	−4.575E−03	1.773E−03	−4.418E−04	7.254E−05	−9.332E−06
R11	−9.000E+01	−7.911E−03	3.395E−03	−1.163E−03	3.424E−04	−6.861E−05
R12	−5.607E+00	−1.307E−02	3.417E−03	−7.412E−04	1.341E−04	−1.629E−05
R13	−1.312E+01	−2.140E−02	4.411E−04	3.349E−04	−6.303E−05	6.130E−06
R14	−4.099E+00	−1.760E−02	2.273E−03	−2.166E−04	1.467E−05	−7.017E−07
	Cone Coefficient	Aspheric Coefficient
	k	A14	A16	A18	A20
R1	0.000E+00
R2	0.000E+00
R3	4.491E+01	−7.311E−10	1.845E−11	−2.516E−13	1.332E−15
R4	−1.898E+00	−9.208E−06	8.752E−07	−4.383E−08	8.961E−10
R5	4.571E−01	−3.838E−06	4.123E−07	−2.141E−08	4.167E−10
R6	9.500E+01	−1.130E−03	2.437E−04	−2.816E−05	1.332E−06
R7	−5.588E+00	−1.298E−04	1.087E−05	0.000E+00	0.000E+00
R8	−1.419E+01	1.339E−05	−5.101E−07	0.000E+00	0.000E+00
R9	2.430E+01	5.849E−05	−8.188E−06	6.958E−07	−2.794E−08
R10	−6.191E+00	9.127E−07	−6.543E−08	3.285E−09	−9.075E−11
R11	−9.000E+01	8.962E−06	−7.323E−07	3.370E−08	−6.595E−10
R12	−5.607E+00	1.405E−06	−8.354E−08	2.805E−09	−3.481E−11
R13	−1.312E+01	−3.562E−07	1.229E−08	−2.319E−10	1.836E−12
R14	−4.099E+00	2.270E−08	−4.656E−10	5.475E−12	−2.911E−14

For convenience, the aspheric surfaces of the individual lens surfaces use the aspheric surfaces shown in Equation (1) below. However, the present application is not limited to the polynomial form of the aspheric surfaces expressed in Equation (1).

$\begin{array}{cc}z=\left({\mathrm{cr}}^2\right)/\left\{1+{\left[1-\left(k+1\right)\left(c^2{r}^2\right)\right]}^{1/2}\right\}+A4r^4+A6r^6+A8r^8+A10r^{10}+A12r^{12}+A14r^{14}+A16r^{16}+A18r^{18}+A20r^{20}& \left(1\right)\end{array}$

k is the cone coefficient; A4, A6, A8, A10, A12, A14, A16, A18, A20 is the aspheric coefficient; c is the curvature at the center of the optical surface; r is the perpendicular distance between the point on the aspheric curve and the optical axis; and z is the aspheric depth (the perpendicular distance between the point on the aspheric surface at a distance of r from the optical axis and the cut surface tangent to the apex of the aspheric surface on the optical axis).

Tables 3 and 4 show the design data of the inflection point and the stationary point of each lens in the camera optical lens 10 according to the first embodiment of the present application. P1R1, P1R2 represent the objective surface and the image surface of the first lens L1, respectively; P2R1, P2R2 represent the objective surface and the image surface of the second lens L2, respectively; P3R1, P3R2 represent the objective surface and the image surface of the third lens L3, respectively; P4R1, P4R2 represent the objective surface and the image surface of the fourth lens L4, respectively; P5R1, P5R2 represent the objective surface and the image surface of the fifth lens L5, respectively; P6R1, P6R2 represent the objective surface and the image surface of the sixth lens L6, respectively; and P7R1, P7R2 represent the objective surface and the image surface of the seventh lens L7, respectively. The data corresponding to the “position of the inflection point” field is the perpendicular distance from the inflection point set on the surface of each lens to the optical axis of the camera optical lens 10. The data corresponding to the “Position of the stationary point” field is the perpendicular distance from the stationary point set on the surface of each lens to the optical axis of the camera optical lens 10.

	TABLE 3
		Number of	Position of	Position of	Position of
		Inflection	Inflection	Inflection	Inflection
		Points	Point 1	Point 2	Point 3
	P1R1	0	/	/	/
	P1R2	0	/	/	/
	P2R1	2	1.195	4.675	/
	P2R2	0	/	/	/
	P3R1	0	/	/	/
	P3R2	1	1.465	/	/
	P4R1	1	1.055	/	/
	P4R2	0	/	/	/
	P5R1	1	0.525	/	/
	P5R2	1	2.025	/	/
	P6R1	2	0.255	1.505	/
	P6R2	1	2.125	/	/
	P7R1	3	0.765	3.175	4.515
	P7R2	1	1.165	/	/

	TABLE 4
		Number of	Position of	Position of
		Stationary	Stationary	Stationary
		Points	Point 1	Point 2
	P1R1	0	/	/
	P2R2	0	/	/
	P2R1	1	2.175	/
	P2R2	0	/	/
	P3R1	0	/	/
	P3R2	0	/	/
	P4R1	0	/	/
	P4R2	0	/	/
	P5R1	1	0.975	/
	P5R2	0	/	/
	P6R1	2	0.445	1.985
	P6R2	1	3.005	/
	P7R1	1	1.415	/
	P7R2	1	2.745	/

FIGS. 2 and 3 are schematic diagrams showing the axial aberration and the magnification chromatic aberration of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm, and 650 nm, respectively, after passing through the camera optical lens 10 according to the first embodiment. FIG. 4 is a schematic diagram showing the field curvature and distortion of light with a wavelength of 555.0 nm after passing through the camera optical lens 10 according to the first embodiment. The field curvature S of FIG. 4 is a field curvature in the arc-sagittal direction, and T is a field curvature in the meridional direction.

Table 25 in the following shows various values and the values corresponding to the parameters specified in the relationship expressions in each of the first embodiment, second embodiment, third embodiment, fourth embodiment, and fifth embodiment, and the comparison example.

As shown in Table 25, the first embodiment satisfies each of the relationship expressions.

In this embodiment, the camera optical lens 10 has an Entrance Pupil Diameter (ENPD) of 1.538 mm, a full field-of-view image height (IH) of 6.060 mm, a field of view (FOV) of 155.65° in the diagonal direction, and an aperture value FNO of 2.60. The camera optical lens 10 satisfies the design requirements of large aperture and ultra-wide angle and has excellent optical characteristics.

Second Embodiment

The second embodiment is basically the same as the first embodiment, the symbols have the same meaning as that according to the first embodiment, and only the differences are listed below.

Tables 5 and 6 show the design data of the camera optical lens 20 according to the second embodiment of the present application.

	TABLE 5
	R	d	nd	νd
S1	∞	d0=	−16.945
R1	42.104	d1=	1.920	nd1	1.6385	ν1	55.47
R2	6.011	d2=	6.426
R3	−39.304	d3=	4.613	nd2	1.6610	ν2	20.53
R4	8.214	d4=	0.124
R5	4.028	d5=	3.386	nd3	1.6153	ν3	25.94
R6	−243.417	d6=	0.399
R7	7.203	d7=	1.576	nd4	1.6192	ν4	63.85
R8	−4.593	d8=	0.156
R9	14.110	d9=	0.672	nd5	1.6610	ν5	20.53
R10	3.640	d10=	0.812
R11	257.322	d11=	0.550	nd6	1.5346	ν6	55.69
R12	−9.078	d12=	1.707
R13	5.564	d13=	0.856	nd7	1.6153	ν7	25.94
R14	2.938	d14=	0.552
R15	∞	d15=	0.300	ndg	1.5233	νg	54.52
R16	∞	d16=	0.876

Table 6 illustrates the aspheric data for each lens in the camera optical lens 20 according to the second embodiment of the present application.

	TABLE 6
	Cone Coefficient	Aspheric Coefficient
	k	A4	A6	A8	A10	A12
R1
R2
R3	4.474E+01	1.751E−03	−7.321E−05	4.913E−06	−3.299E−07	1.821E−08
R4	−2.181E+00	1.002E−02	−1.427E−03	6.752E−04	−2.185E−04	5.585E−05
R5	4.346E−01	3.341E−03	−1.262E−03	3.694E−04	−8.285E−05	2.018E−05
R6	−6.287E−01	−8.392E−03	−8.615E−04	5.109E−03	−5.165E−03	3.097E−03
R7	−4.965E+00	−1.044E−02	−1.170E−05	1.522E−03	−1.319E−03	5.793E−04
R8	−1.463E+01	−2.994E−02	1.034E−02	−4.020E−03	1.035E−03	−1.650E−04
R9	2.197E+01	−2.748E−02	8.126E−03	−3.237E−03	1.070E−03	−2.914E−04
R10	−5.852E+00	−4.468E−03	1.780E−03	−4.426E−04	7.229E−05	−9.362E−06
R11	−9.500E+01	−7.862E−03	3.399E−03	−1.163E−03	3.425E−04	−6.859E−05
R12	−4.789E+00	−1.319E−02	3.420E−03	−7.383E−04	1.343E−04	−1.628E−05
R13	−2.032E+01	−2.294E−02	4.019E−04	3.328E−04	−6.311E−05	6.127E−06
R14	−4.856E+00	−1.793E−02	2.249E−03	−2.158E−04	1.467E−05	−7.021E−07
	Cone Coefficient	Aspheric Coefficient
	k	A14	A16	A18	A20
R1
R2
R3	4.474E+01	−7.301E−10	1.850E−11	−2.509E−13	1.222E−15
R4	−2.181E+00	−9.209E−06	8.750E−07	−4.390E−08	8.765E−10
R5	4.346E−01	−3.843E−06	4.113E−07	−2.153E−08	4.083E−10
R6	−6.287E−01	−1.131E−03	2.436E−04	−2.814E−05	1.351E−06
R7	−4.965E+00	−1.336E−04	8.836E−06	−1.337E−07	8.210E−07
R8	−1.463E+01	1.335E−05	−5.108E−07	−3.220E−09	−3.310E−09
R9	2.197E+01	5.845E−05	−8.186E−06	6.965E−07	−2.787E−08
R10	−5.852E+00	9.114E−07	−6.517E−08	3.381E−09	−8.402E−11
R11	−9.500E+01	8.964E−06	−7.322E−07	3.370E−08	−6.601E−10
R12	−4.789E+00	1.405E−06	−8.350E−08	2.810E−09	−3.392E−11
R13	−2.032E+01	−3.563E−07	1.229E−08	−2.324E−10	1.782E−12
R14	−4.856E+00	2.269E−08	−4.659E−10	5.471E−12	−2.893E−14

Tables 7 and 8 show the design data of the inflection point and the stationary point of each lens in the camera optical lens 20 according to the second embodiment of the present application.

	TABLE 7
		Number of	Position of	Position of
		Inflection	Inflection	Inflection
		Points	Point 1	Point 2
	P1R1	0	/	/
	P1R2	0	/	/
	P2R1	1	1.225	/
	P2R2	0	/	/
	P3R1	0	/	/
	P3R2	1	1.425	/
	P4R1	1	1.095	/
	P4R2	0	/	/
	P5R1	1	0.525	/
	P5R2	1	2.035	/
	P6R1	2	0.215	1.505
	P6R2	1	2.105	/
	P7R1	1	0.685	/
	P7R2	1	1.095	/

	TABLE 8
		Number of	Position of	Position of
		Stationary	Stationary	Stationary
		Points	Point 1	Point 2
	P1R1	0	/	/
	P1R2	0	/	/
	P2R1	1	2.245	/
	P2R2	0	/	/
	P3R1	0	/	/
	P3R2	0	/	/
	P4R1	0	/	/
	P4R2	0	/	/
	P5R1	1	0.965	/
	P5R2	0	/	/
	P6R1	2	0.365	1.975
	P6R2	0	/	/
	P7R1	1	1.235	/
	P7R2	1	2.425	/

FIGS. 6 and 7 are schematic diagrams showing the axial aberration and magnification chromatic aberration of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm, and 650 nm, respectively, after passing through the camera optical lens 20 according to the second embodiment. FIG. 8 is a schematic diagram showing the field curvature and distortion of light with a wavelength of 555.0 nm after passing through the camera optical lens 20 according to the second embodiment. The field curvature S of FIG. 8 is the field curvature in the arc-sagittal direction, and T is the field curvature in the meridional direction.

As shown in Table 25, the second embodiment satisfies each of the relationship expressions.

In this embodiment, the camera optical lens 20 has an Entrance Pupil Diameter (ENPD) of 1.360 mm, a full field-of-view image height (IH) of 6.060 mm, a field of view (FOV) of 178.00° in the diagonal direction, and an aperture value FNO of 2.60. The camera optical lens 20 satisfies the design requirements of large aperture and ultra-wide angle and has excellent optical characteristics.

Third Embodiment

The third embodiment is basically the same as the first embodiment, the meaning of the symbols is the same as that according to the first embodiment, and only the differences are listed below. The image surface of the third lens L3 is concave at a proximal-axis position, and the objective surface of the sixth lens L6 is concave at a proximal-axis position.

Tables 9 and 10 show the design data of the camera optical lens 30 according to the third embodiment of the present application.

	TABLE 9
	R	d	nd	νd
S1	∞	d0=	−27.517
R1	89.610	d1=	17.387	nd1	1.6385	ν1	55.47
R2	7.505	d2=	2.203
R3	−35.436	d3=	3.758	nd2	1.6610	ν2	20.53
R4	7.333	d4=	0.099
R5	4.063	d5=	3.475	nd3	1.6153	ν3	25.94
R6	60.722	d6=	0.375
R7	6.478	d7=	1.166	nd4	1.6192	ν4	63.85
R8	−4.704	d8=	0.145
R9	10.090	d9=	0.636	nd5	1.6610	ν5	20.53
R10	5.253	d10=	1.331
R11	−20.506	d11=	0.647	nd6	1.5346	ν6	55.69
R12	−10.333	d12=	1.469
R13	12.143	d13=	0.970	nd7	1.6153	ν7	25.94
R14	3.542	d14=	0.384
R15	∞	d15=	0.300	ndg	1.5233	νg	54.52
R16	∞	d16=	0.542

Table 10 illustrates the aspheric data for each lens in the camera optical lens 30 according to the third embodiment of the present application.

	TABLE 10
	Cone Coefficient	Aspheric Coefficient
	k	A4	A6	A8	A10	A12
R1
R2
R3	4.213E+01	1.615E−03	−8.158E−05	4.685E−06	−3.328E−07	1.825E−08
R4	−1.352E+00	1.017E−02	−1.328E−03	6.904E−04	−2.176E−04	5.595E−05
R5	4.071E−01	2.823E−03	−1.211E−03	3.759E−04	−8.315E−05	2.021E−05
R6	9.524E+01	−7.415E−03	−1.027E−03	5.129E−03	−5.149E−03	3.102E−03
R7	−3.722E+00	−1.023E−02	−4.522E−04	1.337E−03	−1.364E−03	5.861E−04
R8	−1.326E+01	−3.155E−02	1.005E−02	−3.994E−03	1.039E−03	−1.711E−04
R9	2.597E+01	−2.588E−02	8.011E−03	−3.348E−03	1.051E−03	−2.938E−04
R10	−7.742E+00	−5.362E−03	1.643E−03	−4.479E−04	7.148E−05	−9.624E−06
R11	4.758E+01	−9.529E−03	3.382E−03	−1.179E−03	3.433E−04	−6.827E−05
R12	−1.339E+01	−1.287E−02	3.421E−03	−7.357E−04	1.343E−04	−1.630E−05
R13	−9.638E+01	−2.323E−02	4.770E−04	3.381E−04	−6.289E−05	6.135E−06
R14	−4.169E+00	−1.688E−02	2.206E−03	−2.137E−04	1.462E−05	−7.030E−07
	Cone Coefficient	Aspheric Coefficient
	k	A14	A16	A18	A20
R1
R2
R3	4.213E+01	−7.258E−10	1.859E−11	−2.500E−13	1.430E−15
R4	−1.352E+00	−9.207E−06	8.753E−07	−4.398E−08	9.149E−10
R5	4.071E−01	−3.829E−06	4.151E−07	−2.145E−08	3.123E−10
R6	9.524E+01	−1.130E−03	2.435E−04	−2.825E−05	1.380E−06
R7	−3.722E+00	−1.234E−04	1.380E−05	2.674E−07	−6.818E−07
R8	−1.326E+01	9.833E−06	−1.491E−06	3.084E−08	1.787E−07
R9	2.597E+01	5.813E−05	−8.086E−06	6.722E−07	−6.463E−08
R10	−7.742E+00	8.518E−07	−7.409E−08	2.763E−09	1.908E−11
R11	4.758E+01	8.992E−06	−7.318E−07	3.347E−08	−6.960E−10
R12	−1.339E+01	1.405E−06	−8.343E−08	2.812E−09	−3.585E−11
R13	−9.638E+01	−3.562E−07	1.228E−08	−2.327E−10	1.820E−12
R14	−4.169E+00	2.269E−08	−4.655E−10	5.494E−12	−2.843E−14

Tables 11 and 12 show the design data of the inflection point and the stationary point of each lens in the camera optical lens 30 according to the third embodiment of the present application.

	TABLE 11
		Number of	Position of	Position of
		Inflection	Inflection	Inflection
		Points	Point 1	Point 2
	P1R1	0	/	/
	P1R2	0	/	/
	P2R1	2	1.445	3.265
	P2R2	0	/	/
	P3R1	0	/	/
	P3R2	2	0.445	1.215
	P4R1	1	1.045	/
	P4R2	0	/	/
	P5R1	1	0.765	/
	P5R2	1	1.595	/
	P6R1	1	2.205	/
	P6R2	1	2.015	/
	P7R1	2	0.495	3.015
	P7R2	1	1.175	/

	TABLE 12
		Number of	Position of	Position of
		Stationary	Stationary	Stationary
		Points	Point 1	Point 2
	P1R1	0	/	/
	P1R2	0	/	/
	P2R1	0	/	/
	P2R2	0	/	/
	P3R1	0	/	/
	P3R2	2	0.805	1.435
	P4R1	0	/	/
	P4R2	0	/	/
	P5R1	1	1.515	/
	P5R2	0	/	/
	P6R1	0	/	/
	P6R2	1	2.755	/
	P7R1	1	0.865	/
	P7R2	1	2.645	/

FIGS. 10 and 11 are schematic diagrams showing the axial aberration and magnification chromatic aberration after light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm, and 650 nm, respectively, after passing through the camera optical lens 30 according to the third embodiment. FIG. 12 is a schematic diagram showing the field curvature and distortion of light with a wavelength of 555.0 nm after passing through the camera optical lens 30 according to the third embodiment. The field curvature S of FIG. 12 is the field curvature in the arc-sagittal direction, and T is the field curvature in the meridional direction.

As shown in Table 25, the third embodiment satisfies each of the relationship expressions.

In this embodiment, the camera optical lens 30 has an Entrance Pupil Diameter (ENPD) of 1.831 mm, a full field-of-view image height (IH) of 6.060 mm, a field of view (FOV) of 150.55° in the diagonal direction, and an aperture value FNO of 2.60. The camera optical lens 30 satisfies the design requirements of large aperture and ultra-wide angle and has excellent optical characteristics.

Fourth Embodiment

The fourth embodiment is basically the same as the first embodiment, the symbols have the same meaning as that according to the first embodiment, and only the differences are listed below. The objective surface of the sixth lens L6 is concave at a proximal-axis position.

Tables 13 and 14 show the design data of the camera optical lens 40 according to the fourth embodiment of the present application.

	TABLE 13
	R	d	nd	νd
S1	∞	d0=	−16.053
R1	19.054	d1=	1.222	nd1	1.6385	ν1	55.47
R2	6.268	d2=	6.478
R3	−36.621	d3=	4.399	nd2	1.6610	ν2	20.53
R4	8.317	d4=	0.392
R5	3.999	d5=	2.824	nd3	1.6153	ν3	25.94
R6	−95.225	d6=	0.529
R7	6.416	d7=	1.456	nd4	1.6192	ν4	63.85
R8	−4.480	d8=	0.058
R9	40.043	d9=	0.694	nd5	1.6610	ν5	20.53
R10	3.808	d10=	0.755
R11	−3004.570	d11=	1.229	nd6	1.5346	ν6	55.69
R12	−10.626	d12=	1.479
R13	5.678	d13=	0.881	nd7	1.6153	ν7	25.94
R14	2.908	d14=	0.601
R15	∞	d15=	0.300	ndg	1.5233	νg	54.52
R16	∞	d16=	0.523

Table 14 illustrates the aspheric data for each lens in the camera optical lens 40 according to the fourth embodiment of the present application.

	TABLE 14
	Cone Coefficient	Aspheric Coefficient
	k	A4	A6	A8	A10	A12
R1
R2
R3	4.773E+01	1.649E−03	−7.549E−05	4.888E−06	−3.294E−07	1.819E−08
R4	−2.141E+00	9.888E−03	−1.439E−03	6.679E−04	−2.197E−04	5.573E−05
R5	4.227E−01	3.261E−03	−1.287E−03	3.672E−04	−8.350E−05	2.017E−05
R6	−8.725E+03	−8.435E−03	−9.304E−04	5.099E−03	−5.158E−03	3.100E−03
R7	−3.076E+00	−1.016E−02	−2.357E−04	1.400E−03	−1.335E−03	5.890E−04
R8	−1.401E+01	−3.129E−02	1.044E−02	−3.856E−03	1.046E−03	−1.700E−04
R9	7.657E+01	−2.641E−02	8.197E−03	−3.218E−03	1.074E−03	−2.898E−04
R10	−5.703E+00	−4.911E−03	1.720E−03	−4.460E−04	7.246E−05	−9.247E−06
R11	1.583E+06	−7.821E−03	3.268E−03	−1.175E−03	3.425E−04	−6.857E−05
R12	−2.713E+01	−1.392E−02	3.372E−03	−7.398E−04	1.339E−04	−1.632E−05
R13	−2.355E+01	−2.207E−02	4.818E−04	3.358E−04	−6.301E−05	6.130E−06
R14	−4.821E+00	−1.683E−02	2.199E−03	−2.145E−04	1.464E−05	−7.028E−07
	Cone Coefficient	Aspheric Coefficient
	k	A14	A16	A18	A20
R1
R2
R3	4.773E+01	−7.317E−10	1.842E−11	−2.525E−13	1.511E−15
R4	−2.141E+00	−9.219E−06	8.747E−07	−4.377E−08	9.327E−10
R5	4.227E−01	−3.840E−06	4.129E−07	−2.120E−08	4.443E−10
R6	−8.725E+03	−1.130E−03	2.435E−04	−2.819E−05	1.348E−06
R7	−3.076E+00	−1.170E−04	1.558E−05	9.958E−07	−2.298E−06
R8	−1.401E+01	1.092E−05	−6.447E−07	6.774E−08	8.812E−08
R9	7.657E+01	5.890E−05	−8.113E−06	6.902E−07	−3.085E−08
R10	−5.703E+00	9.288E−07	−6.405E−08	3.350E−09	−3.420E−10
R11	1.583E+06	8.951E−06	−7.345E−07	3.336E−08	−6.739E−10
R12	−2.713E+01	1.402E−06	−8.357E−08	2.818E−09	−3.263E−11
R13	−2.355E+01	−3.562E−07	1.229E−08	−2.320E−10	1.848E−12
R14	−4.821E+00	2.268E−08	−4.654E−10	5.502E−12	−2.740E−14

Tables 15 and 16 show the design data of the inflection point and the stationary point of each lens in the camera optical lens 40 according to the fourth embodiment of the present application.

	TABLE 15
		Number of	Position of	Position of
		Inflection	Inflection	Inflection
		Points	Point 1	Point 2
	P1R1	0	/	/
	P1R2	0	/	/
	P2R1	2	1.365	3.945
	P2R2	0	/	/
	P3R1	0	/	/
	P3R2	1	1.415	/
	P4R1	1	1.155	/
	P4R2	0	/	/
	P5R1	1	0.295	/
	P5R2	1	1.885	/
	P6R1	0	/	/
	P6R2	1	2.205	/
	P7R1	2	0.685	3.075
	P7R2	2	1.135	4.915

	TABLE 16
		Number of	Position of	Position of
		Stationary	Stationary	Stationary
		Points	Point 1	Point 2
	P1R1	0	/	/
	P1R2	0	/	/
	P2R1	2	2.605	4.585
	P2R2	0	/	/
	P3R1	0	/	/
	P3R2	1	1.765	/
	P4R1	0	/	/
	P4R2	0	/	/
	P5R1	1	0.515	/
	P5R2	0	/	/
	P6R1	0	/	/
	P6R2	0	/	/
	P7R1	2	1.245	4.335
	P7R2	1	2.615	/

FIGS. 14 and 15 are schematic diagrams showing the axial aberration and magnification chromatic aberration of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm, and 650 nm, respectively, after passing through the camera optical lens 40 according to the fourth embodiment. FIG. 16 is a schematic diagram showing the field curvature and distortion of light with a wavelength of 555.0 nm after passing through the camera optical lens 40 according to the fourth embodiment. The field curvature S of FIG. 16 is the field curvature in the arc-sagittal direction, and the field curvature T is the field curvature in the meridional direction.

As shown in Table 25, the fourth embodiment satisfies each of the relationship expressions.

In this embodiment, the camera optical lens 40 has an Entrance Pupil Diameter (ENPD) of 1.539 mm, a full field-of-view image height (IH) of 6.060 mm, a field of view (FOV) of 133.00° in the diagonal direction, and an aperture value FNO of 2.60. The camera optical lens 40 satisfies the design requirements of large aperture and ultra-wide angle and has excellent optical characteristics.

Fifth Embodiment

The fifth embodiment is basically the same as the first embodiment, and the meaning of the symbols is the same as that according to the first embodiment, and only the differences are listed below.

Tables 17 and 18 show the design data of the camera optical lens 50 according to the fifth embodiment of the present application.

	TABLE 17
	R	d	nd	νd
S1	∞	d0=	−19.960
R1	55.183	d1=	7.412	nd1	1.6385	ν1	55.47
R2	6.744	d2=	3.738
R3	−37.982	d3=	4.437	nd2	1.6610	ν2	20.53
R4	8.107	d4=	0.304
R5	3.985	d5=	3.469	nd3	1.6153	ν3	25.94
R6	−371.217	d6=	0.490
R7	7.033	d7=	1.195	nd4	1.6192	ν4	63.85
R8	−4.529	d8=	0.147
R9	13.028	d9=	0.683	nd5	1.6610	ν5	20.53
R10	3.647	d10=	0.934
R11	8.933	d11=	1.377	nd6	1.5346	ν6	55.69
R12	−12.595	d12=	1.387
R13	6.132	d13=	0.983	nd7	1.6153	ν7	25.94
R14	3.228	d14=	0.474
R15	∞	d15=	0.300	ndg	1.5233	νg	54.52
R16	∞	d16=	0.701

	TABLE 18
	Cone Coefficient	Aspheric Coefficient
	k	A4	A6	A8	A10	A12
R1
R2
R3	4.573E+01	1.714E−03	−7.465E−05	4.905E−06	−3.301E−07	1.819E−08
R4	−1.500E+00	1.021E−02	−1.390E−03	6.768E−04	−2.182E−04	5.592E−05
R5	4.235E−01	3.462E−03	−1.286E−03	3.670E−04	−8.314E−05	2.016E−05
R6	−3.531E+05	−8.517E−03	−9.196E−04	5.140E−03	−5.155E−03	3.098E−03
R7	−6.661E+00	−1.090E−02	−3.064E−04	1.397E−03	−1.297E−03	6.276E−04
R8	−1.473E+01	−2.960E−02	1.046E−02	−3.952E−03	1.068E−03	−1.531E−04
R9	2.932E+01	−2.617E−02	8.341E−03	−3.193E−03	1.079E−03	−2.893E−04
R10	−6.430E+00	−4.773E−03	1.712E−03	−4.559E−04	7.065E−05	−9.461E−06
R11	−7.926E−03	3.373E−03	−1.165E−03	3.423E−04	−6.865E−05	8.956E−06
R12	−2.134E+00	−1.306E−02	3.418E−03	−7.412E−04	1.340E−04	−1.630E−05
R13	−2.152E+01	−2.130E−02	4.473E−04	3.352E−04	−6.302E−05	6.130E−06
R14	−4.174E+00	−1.765E−02	2.268E−03	−2.163E−04	1.467E−05	−7.019E−07
	Cone Coefficient	Aspheric Coefficient
	k	A14	A16	A18	A20
R1
R2
R3	4.573E+01	−7.316E−10	1.847E−11	−2.506E−13	1.396E−15
R4	−1.500E+00	−9.201E−06	8.758E−07	−4.382E−08	8.899E−10
R5	4.235E−01	−3.839E−06	4.130E−07	−2.128E−08	4.256E−10
R6	−3.531E+05	−1.132E−03	2.431E−04	−2.812E−05	1.500E−06
R7	−6.661E+00	−9.793E−05	2.467E−05	−6.592E−06	−2.509E−05
R8	−1.473E+01	1.757E−05	7.292E−07	1.992E−07	−4.659E−08
R9	2.932E+01	5.893E−05	−8.096E−06	6.944E−07	−3.986E−08
R10	−6.430E+00	9.446E−07	−5.829E−08	4.487E−09	−3.048E−10
R11	−7.926E−03	−7.331E−07	3.360E−08	−6.634E−10	0.000E+00
R12	−2.134E+00	1.404E−06	−8.351E−08	2.810E−09	−3.427E−11
R13	−2.152E+01	−3.562E−07	1.229E−08	−2.320E−10	1.835E−12
R14	−4.174E+00	2.270E−08	−4.656E−10	5.473E−12	−2.912E−14

Tables 19 and 20 show the design data of the inflection point and the stationary point of each lens in the camera optical lens 50 according to the fifth embodiment of the present application.

	TABLE 19
		Number of	Position of	Position of
		Inflection	Inflection	Inflection
		Points	Point 1	Point 2
	P1R1	0	/	/
	P1R2	0	/	/
	P2R1	2	1.285	4.335
	P2R2	0	/	/
	P3R1	0	/	/
	P3R2	1	1.355	/
	P4R1	0	/	/
	P4R2	0	/	/
	P5R1	1	0.595	/
	P5R2	1	1.725	/
	P6R1	2	1.595	2.425
	P6R2	1	2.125	/
	P7R1	2	0.695	3.115
	P7R2	1	1.155	/

	TABLE 20
		Number of	Position of
		Stationary	Stationary
		Points	Point 1
	P1R1	0	/
	P1R2	0	/
	P2R1	1	2.375
	P2R2	0	/
	P3R1	0	/
	P3R2	0	/
	P4R1	0	/
	P4R2	0	/
	P5R1	1	1.155
	P5R2	0	/
	P6R1	1	2.225
	P6R2	1	2.975
	P7R1	1	1.255
	P7R2	1	2.605

FIGS. 18 and 19 are schematic diagrams showing the axial aberration and magnification chromatic aberration of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm, and 650 nm, respectively, after passing through the camera optical lens 50 according to the fifth embodiment. FIG. 20 shows a schematic diagram of the field curvature and distortion of light with a wavelength of 555.0 nm after passing through the camera optical lens 50 according to the fifth embodiment. The field curvature S of FIG. 20 is the field curvature in the arc-sagittal direction, and the field curvature T is the field curvature in the meridional direction.

As shown in Table 25, the fifth embodiment satisfies each of the relationship expressions.

In this embodiment, the camera optical lens 50 has an Entrance Pupil Diameter (ENPD) of 1.273 mm, a full field-of-view image height (IH) of 6.060 mm, a field of view (FOV) of 144.47° in the diagonal direction, and an aperture value FNO of 2.60. The camera optical lens 50 satisfies the design requirements of large aperture and ultra-wide angle and has excellent optical characteristics.

Comparison Example

The comparison example is basically the same as the first embodiment, the meaning of the symbols is the same as that according to the first embodiment, and only the differences are listed below.

Tables 21 and 22 show the design data of the camera optical lens 60 of the present proportions.

	TABLE 21
	R	d	nd	νd
S1	∞	d0=	−16.314
R1	36.381	d1=	1.037	nd1	1.6385	ν1	55.47
R2	6.051	d2=	6.305
R3	−40.602	d3=	5.000	nd2	1.6610	ν2	20.53
R4	8.113	d4=	0.220
R5	4.012	d5=	3.351	nd3	1.6153	ν3	25.94
R6	−230.910	d6=	0.361
R7	7.127	d7=	1.782	nd4	1.6192	ν4	63.85
R8	−4.503	d8=	0.142
R9	13.710	d9=	0.644	nd5	1.6610	ν5	20.53
R10	3.635	d10=	0.700
R11	368.018	d11=	0.940	nd6	1.5346	ν6	55.69
R12	−10.058	d12=	1.690
R13	4.585	d13=	0.857	nd7	1.6153	ν7	25.94
R14	2.784	d14=	0.417
R15	∞	d15=	0.300	ndg	1.5233	νg	54.52
R16	∞	d16=	0.787

	TABLE 22
	Cone Coefficient	Aspheric Coefficient
	k	A4	A6	A8	A10	A12
R1
R2
R3	4.309E+01	1.759E−03	−7.361E−05	4.926E−06	−3.294E−07	1.822E−08
R4	−1.733E+00	1.010E−02	−1.425E−03	6.752E−04	−2.186E−04	5.585E−05
R5	4.563E−01	3.478E−03	−1.254E−03	3.694E−04	−8.304E−05	2.019E−05
R6	−9.503E+01	−8.147E−03	−8.953E−04	5.084E−03	−5.167E−03	3.096E−03
R7	−7.094E+00	−1.083E−02	8.055E−05	1.525E−03	−1.317E−03	5.829E−04
R8	−1.524E+01	−2.974E−02	1.041E−02	−3.996E−03	1.042E−03	−1.638E−04
R9	2.194E+01	−2.751E−02	8.100E−03	−3.226E−03	1.071E−03	−2.912E−04
R10	−5.817E+00	−4.564E−03	1.765E−03	−4.422E−04	7.248E−05	−9.328E−06
R11	9.590E+01	−7.882E−03	3.412E−03	−1.163E−03	3.425E−04	−6.860E−05
R12	−7.596E+00	−1.296E−02	3.413E−03	−7.414E−04	1.342E−04	−1.629E−05
R13	−1.773E+01	−2.174E−02	4.367E−04	3.349E−04	−6.303E−05	6.130E−06
R14	−4.524E+00	−1.747E−02	2.272E−03	−2.169E−04	1.466E−05	−7.018E−07
	Cone Coefficient	Aspheric Coefficient
	k	A14	A16	A18	A20
R1
R2
R3	4.309E+01	−7.312E−10	1.847E−11	−2.526E−13	1.295E−15
R4	−1.733E+00	−9.211E−06	8.750E−07	−4.386E−08	8.833E−10
R5	4.563E−01	−3.838E−06	4.120E−07	−2.140E−08	4.178E−10
R6	−9.503E+01	−1.130E−03	2.437E−04	−2.813E−05	1.328E−06
R7	−7.094E+00	−1.303E−04	1.069E−05	−2.668E−07	7.215E−08
R8	−1.524E+01	1.351E−05	−5.094E−07	−7.933E−09	−3.613E−09
R9	2.194E+01	5.849E−05	−8.185E−06	6.962E−07	−2.781E−08
R10	−5.817E+00	9.144E−07	−6.516E−08	3.295E−09	−9.225E−11
R11	9.590E+01	8.962E−06	−7.323E−07	3.370E−08	−6.593E−10
R12	−7.596E+00	1.405E−06	−8.349E−08	2.809E−09	−3.448E−11
R13	−1.773E+01	−3.562E−07	1.229E−08	−2.319E−10	1.841E−12
R14	−4.524E+00	2.270E−08	−4.656E−10	5.473E−12	−2.885E−14

Tables 23 and 24 show the design data of the inflection point and the stationary point of each lens in the camera optical lens 60 according to the comparison example of the present application.

	TABLE 23
		Number of	Position of	Position of
		Inflection	Inflection	Inflection
		Points	Point 1	Point 2
	P1R1	0	/	/
	P1R2	0	/	/
	P2R1	2	1.195	4.725
	P2R2	0	/	/
	P3R1	0	/	/
	P3R2	1	1.495	/
	P4R1	1	1.075	/
	P4R2	0	/	/
	P5R1	1	0.535	/
	P5R2	1	2.035	/
	P6R1	2	0.175	1.495
	P6R2	1	2.095	/
	P7R1	2	0.725	3.275
	P7R2	1	1.145	/

	TABLE 24
		Number of	Position of	Position of
		Stationary	Stationary	Stationary
		Points	Point 1	Point 2
	P1R1	0	/	/
	P1R2	0	/	/
	P2R1	1	2.175	/
	P2R2	0	/	/
	P3R1	0	/	/
	P3R2	0	/	/
	P4R1	0	/	/
	P4R2	0	/	/
	P5R1	1	0.985	/
	P5R2	0	/	/
	P6R1	2	0.305	1.985
	P6R2	0	/	/
	P7R1	1	1.355	/
	P7R2	1	2.665	/

FIGS. 22 and 23 are schematic diagrams showing the axial aberration and magnification chromatic aberration of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm, and 650 nm, respectively, after passing through the scaled camera optical lens 60, respectively. FIG. 24, on the other hand, shows a schematic diagram of the field curvature and distortion of light having a wavelength of 555.0 nm after passing through the camera optical lens 60 of the comparison example. The field curvature S of FIG. 24 is the field curvature in the arc-sagittal direction, and T is the field curvature in the meridional direction.

Table 25 in the following lists the values corresponding to each of the relationship expressions in the comparison example in accordance with the above relationship expressions. It is clear that the camera optical lens 60 of the comparison example does not satisfy the above relationship expression 0.95≤f4/f≤1.40.

In the comparison example, the camera optical lens 60 has an Entrance Pupil Diameter (ENPD) of 1.270 mm, a full field-of-view image height (IH) of 6.060 mm, a field of view (FOV) of 173.20° in the diagonal direction, and an aperture value FNO of 2.60. The camera optical lens 60 is not sufficiently compensated for various types of aberrations, and it lacks excellent optical characteristics.

TABLE 25
Parameters and
relationship	First	Second	Third	Fourth	Fifth	Comparison
expressions	Embodiment	Embodiment	Embodiment	Embodiment	Embodiment	Example
f4/f	1.19	1.35	0.96	1.12	1.40	1.43
d11/d12	0.66	0.32	0.44	0.83	0.99	0.56
R1/R2	6.20	7.00	11.94	3.04	8.18	6.01
(R9 + R10)/	1.690	1.695	3.172	1.210	1.778	1.722
(R9 − R10)
d7/d8	15.03	10.10	8.04	25.10	8.13	12.55
f6/f	4.29	4.63	7.98	4.97	3.01	5.53
f	3.999	3.535	4.760	4.001	3.311	3.302
f1	−11.807	−11.178	−13.939	−15.144	−12.754	−11.483
f2	−9.744	−9.809	−8.803	−9.782	−9.649	−9.742
f3	6.436	6.430	6.868	6.263	6.386	6.400
f4	4.752	4.760	4.571	4.477	4.619	4.721
f5	−7.512	−7.552	−17.345	−6.360	−7.825	−7.615
f6	17.144	16.361	37.993	19.880	9.967	18.270
f7	−12.745	−11.483	−8.435	−10.953	−12.641	−13.979
TTL	23.175	24.925	34.887	23.820	28.031	24.533
Fno	2.60	2.60	2.60	2.60	2.60	2.60
ENPD	1.538	1.360	1.831	1.539	1.273	1.270
IH	7.000	6.060	6.060	6.060	6.060	6.060
FOV	155.65°	178.00°	150.55°	133.00°	144.47°	173.20°

It can be understood by those of ordinary skill in the art that each of the above embodiments is a specific embodiment for realizing the present application, and that various changes can be made thereto in form and detail in practical application without departing from the spirit and scope of the present application.

Claims

1. A camera optical lens, comprising in order from an objective side to an image side: a first lens having a negative refractive force;a second lens having a negative refractive force;a third lens having a positive refractive force;a fourth lens having a positive refractive force;a fifth lens having a negative refractive force;a sixth lens having a positive refractive force; anda seventh lens having a negative refractive force;a focal length of the camera optical lens is f; a focal length of the fourth lens is f4; an on-axis thickness of the sixth lens is d11; an on-axis distance from an image surface of the sixth lens to an objective surface of the seventh lens is d12; a radius of curvature of an objective surface of the first lens is R1; a radius of curvature of an image surface of the first lens is R2; a radius of curvature of an objective surface of the fifth lens is R9; a radius of curvature of an image surface of the fifth lens is R10, and the following relationship expressions are satisfied:

2. The camera optical lens of claim 1, wherein an on-axis thickness of the fourth lens is d7; an on-axis distance from an image surface of the fourth lens to the objective surface of the fifth lens is d8, and the following relationship expression is satisfied:

3. The camera optical lens of claim 1, wherein a focal length of the sixth lens is f6, and the following relationship expression is satisfied:

4. The camera optical lens of claim 1, wherein the objective surface of the first lens is convex at a proximal-axis position, and an image surface of the first lens is concave at a proximal-axis position; a focal length of the first lens is f1; an on-axis thickness of the first lens is d1; a total track length of the camera optical lens is TTL, and the following relationship expressions are satisfied:

5. The camera optical lens of claim 1, wherein an objective surface of the second lens is concave at a proximal-axis position, and an image surface of the second lens is concave at a proximal-axis position; a focal length of the second lens is f2; a radius of curvature of the objective surface of the second lens is R3; a radius of curvature of the image surface of the second lens is R4; an on-axis thickness of the second lens is d3; a total track length of the camera optical lens is TTL, and the following relationship expressions are satisfied:

6. The camera optical lens of claim 1, wherein an objective surface of the third lens is convex at a proximal-axis position; a focal length of the third lens is f3; a radius of curvature of the objective surface of the third lens is R5; a radius of curvature of an image surface of the third lens is R6; an on-axis thickness of the third lens is d5; a total track length of the camera optical lens is TTL, and the following relationship expressions are satisfied:

7. The camera optical lens of claim 1, wherein an objective surface of the fourth lens is convex at a proximal-axis position, and an image surface of the fourth lens is convex at a proximal-axis position; a radius of curvature of the objective surface of the fourth lens is R7, and a radius of curvature of the image surface of the fourth lens is R8; an on-axis thickness of the fourth lens is d7; a total track length of the camera optical lens is TTL, and the following relationship expressions are satisfied:

8. The camera optical lens of claim 1, wherein the objective surface of the fifth lens is convex at a proximal-axis position, and the image surface of the fifth lens is concave at a proximal-axis position; a focal length of the fifth lens is f5; an on-axis thickness of the fifth lens is d9; a total track length of the camera optical lens is TTL, and the following relationship expressions are satisfied:

9. The camera optical lens of claim 1, wherein the image surface of the sixth lens is convex at a proximal-axis position; a radius of curvature of an objective surface of the sixth lens is R11; a radius of curvature of the image surface of the sixth lens is R12; a total track length of the camera optical lens is TTL, and the following relationship expressions are satisfied:

10. The camera optical lens of claim 1, wherein the objective surface of the seventh lens is convex at a proximal-axis position, and an image surface of the seventh lens is concave at a proximal-axis position; a focal length of the seventh lens is f7; a radius of curvature of the objective surface of the seventh lens is R13; the radius of curvature of the image surface of the seventh lens is R14; an on-axis thickness of the seventh lens is d13; a total track length of the camera optical lens is TTL, and the following relationship expressions are satisfied:

11. The camera optical lens of claim 1, wherein a field of view of the camera optical lens is FOV, and the following relationship expression is satisfied:

12. The camera optical lens of claim 1, wherein an aperture value of the camera optical lens is FNO, and the following relationship expression is satisfied:

13. The camera optical lens of claim 1, wherein the first lens is made of glass material.

14. The camera optical lens of claim 1, wherein the fourth lens is made of glass material.