CAMERA OPTICAL LENS

TECHNICAL FIELD

The present disclosure relates to the field of optical lenses, in particular to a camera optical lens suitable for handheld terminal devices such as smart phones and digital cameras, laser radar devices and camera devices such as monitors and PC lenses.

BACKGROUND

In recent years, the demand for miniaturized camera lenses has been increasing. For example, under the push of an intelligent detection technology, a 3D spatial detection technology based on a laser radar is rapidly developing. The laser radar camera lens has the advantages of high detection precision, strong anti-interference capability, long coverage range, wide application range and the like, and has been applied to military and civil fields. However, the optical sensing device of the camera lens is not only a charge coupled device (CCD) or a complementary metal-oxide semiconductor sensor (CMOS sensor), and due to the precision of semiconductor manufacturing technology, the pixel size of the optical sensor is reduced, so that the miniaturized camera lens with good imaging quality becomes a mainstream in the current market. In addition, with the development of technology and the increase of diversified requirements of users, the pixel area of the optical sensor is continuously reduced and the requirements on the imaging quality of the system are improving, the structures of five-piece, six-piece and seven-piece lens gradually appear in the lens design. There is an urgent demand for a camera optical lens having good optical characteristics such as large-aperture, ultra-thinness, wide-angle.

SUMMARY

In view of the above problems, an object of the present disclosure is to provide a camera optical lens, which can meet the requirements of large-aperture, ultra-thinness and wide-angle while having high imaging performance.

In order to solve the above technical problem, an embodiment of the present disclosure provides a camera optical lens. The camera optical lens includes from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens;

wherein an on-axis distance from an image-side surface of the third lens to an object-side surface of the fourth lens is d6, a total optical length from an object-side surface of the first lens to an image plane of the camera optical lens along an optic axis of the camera optical lens is TTL, a field of view of the camera optical lens is FOV, a full field of view image height in a diagonal direction of the camera optical lens is IH, a focal length of the camera optical lens is f, a focal length of the third lens is f3, a central curvature radius of an object-side surface of the second lens is R3, and a central curvature radius of an image-side surface of the second lens is R4, and following relational expressions are satisfied:

$0.06 ⩽ d 6 / TTL ⩽ 0.2;$

$90. ⩽ (FOV \times f) / IH ⩽ 140.;$

$1. 00 ⩽ f 3 / f ⩽ 5.; and$

$1. 00 ⩽ R 4 / R 3 ⩽ 15. .$

As an improvement, a refractive index of the first lens is n1, and a following relational expression is satisfied:

$1.7 ⩽ n 1 ⩽ 2.1 .$

As an improvement, a focal length of the fourth lens is f4, a focal length of the fifth lens is f5, and a following relational expression is satisfied:

$- 4 .00 ⩽ f 4 / f 5 ⩽ - 0.6 .$

As an improvement, an on-axis thickness of the second lens is d3, an on-axis thickness of the third lens is d5, and a following relational expression is satisfied:

$1.2 ⩽ d 3 / d 5 ⩽ 5. .$

As an improvement, the first lens has a negative refractive power, and an image-side surface of the first lens is concave in a paraxial region;

a focal length of the first lens is f1, a central curvature radius of an object-side surface of the first lens is R1, a central curvature radius of an image-side surface of the first lens is R2, and an on-axis thickness of the first lens is d1, and following relational expressions are satisfied:

$- 4 .50 ⩽ f 1 / f ⩽ - 1.4; 0.24 ⩽ (R 1 + R 2) / (R 1 - R 2) ⩽ 2.57; and 0.3 ⩽ d 1 / TTL ⩽ 0.2 0 .$

As an improvement, the object-side surface of the second lens is concave in a paraxial region, and the image-side surface of the second lens is convex in the paraxial region;

- a focal length of the second lens is f2, an on-axis thickness of the second lens is d3, and following relational expressions are satisfied:

$- 13.03 ⩽ f 2 / f ⩽ 18.87; and 0.09 ⩽ d 3 / TTL ⩽ 0.2 0 .$

As an improvement, the third lens has a positive refractive power, and an object-side surface of the third lens is convex in a paraxial region;

- a central curvature radius of the object-side surface of the third lens is R5, a central curvature radius of the image-side surface of the third lens is R6, and an on-axis thickness of the third lens is d5, and following relational expressions are satisfied:

$- 2 .06 ⩽ (R 5 + R 6) / (R 5 - R 6) ⩽ - 0.3; and 0.3 ⩽ d 5 / TTL ⩽ 0. 9 .$

As an improvement, the fourth lens has a negative refractive power, and the object-side surface of the fourth lens is concave in a paraxial region.

- a focal length of the fourth lens is f4, a central curvature radius of the object-side surface of the fourth lens is R7, a central curvature radius of an image-side surface of the fourth lens is R8, an on-axis thickness of the fourth lens is d7, and following relational expressions are satisfied:

$- 6 .91 ⩽ f 4 / f ⩽ - 1.58; - 7.81 ⩽ (R 7 + R 8) / (R 7 - R 8) ⩽ - 0.07; and 0.01 ⩽ d 7 / TTL ⩽ 0. 4 .$

As an improvement, the fifth lens has a positive refractive power, and an object-side surface of the fifth lens is convex in a paraxial region;

- a focal length of the fifth lens is f5, a central curvature radius of the object-side surface of the fifth lens is R9, a central curvature radius of an image-side surface of the fifth lens is R10, and an on-axis thickness of the fifth lens is d9, and following relational expressions are satisfied:

$\begin{matrix} 1.7 ⩽ f5 / f ⩽ 3.63; \\ - 2.38 ⩽ (R 9 + R 10) / (R 9 - R 10) ⩽ - 0.34; and \\ 0.03 ⩽ d9 / TTL ⩽ 0.15 . \end{matrix}$

As an improvement, an object-side surface of the sixth lens is convex in a paraxial region, and an image-side surface of the sixth lens is concave in the paraxial region;

- a focal length of the sixth lens is f6, a central curvature radius of the object-side surface of the sixth lens is R11, a central curvature radius of the image-side surface of the sixth lens is R12, and an on-axis thickness of the sixth lens is d11, and following relational expressions are satisfied:

$\begin{matrix} - 20. ⩽ f 6 / f ⩽ 49.; \\ - 70. ⩽ (R 11 + R 12) / (R 11 - R 12) ⩽ 11.35; and \\ 0.02 ⩽ d 11 / TTL ⩽ 0.07 \end{matrix}$

As an improvement, the seventh lens has a positive refractive power, an object-side surface of the seventh lens is convex in a paraxial region, and an image-side surface of the seventh lens is concave in the paraxial region;

- a focal length of the seventh lens is f7, a central curvature radius of the object-side surface of the seventh lens is R13, a central curvature radius of the image-side surface of the seventh lens is R14, and an on-axis thickness of the seventh lens is d13, and following relational expressions are satisfied:

$\begin{matrix} 4.6 ⩽ f 7 / f ⩽ 70.; \\ - 17. ⩽ (R 13 + R 14) / (R 13 - R 14) ⩽ 39.; and \\ 0.04 ⩽ d 13 / TTL ⩽ 0.25 . \end{matrix}$

As an improvement, at least one of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, or the seventh lens is made of glass.

BRIEF DESCRIPTION OF DRAWINGS

Many aspects of the exemplary embodiment can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.

FIG. 1 is a structural schematic diagram of a camera optical lens according to Embodiment 1 of the present disclosure;

FIG. 2 is a schematic diagram of field curvature and distortion of the camera optical lens shown in FIG. 1;

FIG. 3 is a schematic diagram of lateral color of the camera optical lens shown in FIG. 1;

FIG. 4 is a schematic diagram of longitudinal aberration of the camera optical lens shown in FIG. 1;

FIG. 5 is a structural schematic diagram of a camera optical lens according to Embodiment 2 of the present disclosure;

FIG. 6 is a schematic diagram of field curvature and distortion of the camera optical lens shown in FIG. 5;

FIG. 7 is a schematic diagram of lateral color of the camera optical lens shown in FIG. 5;

FIG. 8 is a schematic diagram of longitudinal aberration of the camera optical lens shown in FIG. 5;

FIG. 9 is a structural schematic diagram of a camera optical lens according to Embodiment 3 of the present disclosure;

FIG. 10 is a schematic diagram of field curvature and distortion of the camera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram of lateral color of the camera optical lens shown in FIG. 9;

FIG. 12 is a schematic diagram of longitudinal aberration of the camera optical lens shown in FIG. 9;

FIG. 13 is a structural schematic diagram of a camera optical lens according to Embodiment 4 of the present disclosure;

FIG. 14 is a schematic diagram of field curvature and distortion of the camera optical lens shown in FIG. 13;

FIG. 15 is a schematic diagram of lateral color of the camera optical lens shown in FIG. 13;

FIG. 16 is a schematic diagram of longitudinal aberration of the camera optical lens shown in FIG. 13;

FIG. 17 is a structural schematic diagram of a camera optical lens according to Embodiment 5 of the present disclosure;

FIG. 18 is a schematic diagram of field curvature and distortion of the camera optical lens shown in FIG. 17;

FIG. 19 is a schematic diagram of lateral color of the camera optical lens shown in FIG. 17;

FIG. 20 is a schematic diagram of longitudinal aberration of the camera optical lens shown in FIG. 17;

FIG. 21 is a structural schematic diagram of a camera optical lens according to a Comparative Example of the present disclosure;

FIG. 22 is a schematic diagram of field curvature and distortion of the camera optical lens shown in FIG. 21;

FIG. 23 is a schematic diagram of lateral color of the camera optical lens shown in FIG. 21; and

FIG. 24 is a schematic diagram of longitudinal aberration of the camera optical lens shown in FIG. 21.

DESCRIPTION OF EMBODIMENTS

In order to more clearly illustrate objectives, technical solutions, and advantages of the embodiments of the present disclosure, the technical solutions in the embodiments of the present disclosure are clearly and completely described in details with reference to the accompanying drawings. The described embodiments are merely part of the embodiments of the present disclosure rather than all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present disclosure without paying creative labor shall fall into the protection scope of the present disclosure.

Embodiment 1

Referring to the drawings, the present disclosure provides a camera optical lens 10. FIG. 1 shows a camera optical lens 10 according to Embodiment 1 of the present disclosure, the camera optical lens 10 includes seven lenses. The camera optical lens 10 includes from an object side to an image side: a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7. An optical element such as an optical filter GF may be provided between a seventh lens L7 and an image surface Si.

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

The first lens L1 is a spherical lens, the second lens L2 is a spherical lens, the third lens L3 is a spherical lens, the fourth lens L4 is a spherical lens, the fifth lens L5 is a spherical lens, the sixth lens L6 is an aspheric lens, and the seventh lens L7 is an aspheric lens.

In this embodiment, an on-axis distance from the image-side surface of the third lens L3 to the object-side surface of the fourth lens L4 is defined as d6, and the total optical length from the object-side surface of the first lens to an image plane of the camera optical lens 10 along an optic axis of the camera optical lens 10 is defined as TTL, and a following relational expression is satisfied: 0.06≤d6/TTL≤0.20, which specifies a ratio of the on-axis distance d6 from the image-side surface of the third lens L3 to the object-side surface of the fourth lens L4 to the total optical length from the object-side surface of the first lens to an image plane of the camera optical lens 10 along an optic axis TTL of the camera optical lens 10, within a specified range, a distance between the two lenses (the third lens L3 and the fourth lens L4) at the diaphragm is large, and light near the diaphragm is in smooth transition, which is beneficial to improving image quality.

In this embodiment, a field of view of the camera optical lens 10 is defined as FOV, an image height of the camera optical lens 10 is defined as IH, a focal length of the camera optical lens 10 is defined as f, and a following relational expression is satisfied: 90.00≤(FOV×f)/IH≤140.00, which specifies a ratio of the product of the field of view FOV of the camera optical lens 10 and the focal length f of the camera optical lens 10 to the image height IH of the camera optical lens 10, and within a specified range, a large field of view and a long focal length are considered, to achieve medium-to long-range distance imaging. In an embodiment, the following relational expression is satisfied: FOV≥70.00, so that the lens meets the requirement of wide-angle.

In this embodiment, a focal length of the third lens L3 is defined as f3, a following relational expression is satisfied: 1.00≤f3/f≤5.00, a ratio of the focal length f3 of the third lens L3 to the focal length f of the camera optical lens 10 is specified, the focal length value of the single lens is controlled, within a specified range, the focal lengths may be reasonably distributed, which is beneficial to controlling temperature drift and has good temperature performance.

In this embodiment, a central curvature radius of an object-side surface of the second lens L2 is defined as R3, and a central curvature radius of an image-side surface of the second lens L2 is defined as R4, a following relational expression is satisfied: 1.00≤R4/R3≤15.00, a shape of the second lens L2 is specified, within a specified range, the degree of deflection of light passing through the lens can be mitigated, which is beneficial to correcting the problems such as the aberration of the off-axis angle.

When the field of view of the camera optical lens 10, the image height of the camera optical lens 10, the total optical length from the object-side surface of the first lens to an image plane of the camera optical lens 10 along an optic axis of the camera optical lens 10, the focal length of the camera optical lens 10, the focal length of the related lens, the thickness of the related lens, the central curvature radius of the object-side surface of the related lens, and the central curvature radius of the image-side surface of the related lens of the present disclosure satisfy the relational expressions, the camera optical lens 10 may satisfy a large-aperture, ultra-thinness and wide-angle while having good optical performance.

In this embodiment, a refractive index of the first lens L1 is defined as n1, and a following relational expression is satisfied: 1.70≤n1≤2.10, the first lens L1 can be made of a high-refractive-index material, which is beneficial to reducing the front-end aperture and improving the imaging quality.

In this embodiment, a focal length of the fourth lens L4 is defined as f4, a focal length of the fifth lens L5 is defined as f5, and a following relational expression is satisfied: −4.00≤f4f5≤−0.60, which satisfies a ratio of the focal length f4 of the fourth lens L4 to the focal length f5 of the fifth lens L5, within a specified range, a focal length value of the fourth lens L4 is close to a focal length value of the fifth lens L5, which helps smooth transition of light and improves image quality.

In this embodiment, an on-axis thickness of the second lens L2 is defined as d3, an on-axis thickness of the third lens L3 is defined as d5, and a following relational expression is satisfied: 1.20≤d3/d5≤5.00, which specifies a ratio of the on-axis thickness d3 of the second lens L2 to the on-axis thickness d5 of the third lens L3, and in a specified range, it is beneficial to developing a wide-angle camera lens.

In this embodiment, an object-side surface of the first lens L1 is convex in a paraxial region, an image-side surface of the first lens L1 is concave in the paraxial region, and the first lens L1 has a negative refractive power. In other optional embodiments, the object-side surface and the image-side surface of the first lens L1 may also be provided with other concave and convex distributions, and the first lens L1 may also have a positive refractive power.

In this embodiment, a focal length of the first lens L1 is defined as f1, and a following relational expression is satisfied: −4.50≤f1/f≤−1.40, which specifies a ratio of the focal length f1 of the first lens L1 to the focal length f of the camera optical lens 10, and the refractive power is reasonably distributed, so that the camera lens has better imaging quality and lower sensitivity.

In this embodiment, a central curvature radius of an object-side surface of the first lens L1 is defined as R1, and a central curvature radius of an image-side surface of the first lens L1 is defined as R2, a following relational expression is satisfied: 0.24≤(R1+R2)/(R1−R2)≤2.57, which specifies a shape of the first lens L1, within a specified range, the degree of deflection of light passing through the lens can be mitigated, which is beneficial to correcting the problems such as the aberration of the off-axis angle.

In this embodiment, an on-axis thickness of the first lens L1 is defined as d1, and a following relational expression is satisfied: 0.03≤d1/TTL≤0.20, which specifies a ratio of the on-axis thickness d1 of the first lens L1 to the total optical length from the object-side surface of the first lens to an image plane of the camera optical lens 10 along an optic axis TTL of the camera optical lens 10, and is beneficial to achieving ultra-thinness.

In this embodiment, an object-side surface of the second lens L2 is concave in a paraxial region, an image-side surface of the second lens L2 is convex in the paraxial region, and the second lens L2 has a negative refractive power. In other optional embodiments, the object-side surface and the image-side surface of the second lens L2 may also be provided with other concave and convex distributions, and the second lens L2 may also have a positive refractive power.

In this embodiment, a focal length of the second lens L2 is defined as f2, and a following relational expression is satisfied: −13.03≤f2/f≤18.87, which specifies a ratio of the focal length f2 of the second lens L2 to the focal length f of the camera optical lens 10, and the refractive power is reasonably distributed, so that the camera lens has better imaging quality and lower sensitivity.

In this embodiment, an on-axis thickness d3 of the second lens L2 and the total optical length from the object-side surface of the first lens to an image plane of the camera optical lens 10 along an optic axis TTL of the camera optical lens 10 satisfy a following relational expression: 0.09≤d3/TTL≤0.20, which specifies a ratio of the on-axis thickness d3 of the second lens L2 to the total optical length from the object-side surface of the first lens to an image plane of the camera optical lens 10 along an optic axis TTL of the camera optical lens 10, which is beneficial to achieving ultra-thinness.

In this embodiment, an object-side surface of the third lens L3 is convex in a paraxial region, an image-side surface of the third lens L3 is convex in the paraxial region, and the third lens L3 has a positive refractive power. In other optional embodiments, the object-side surface and the image-side surface of the third lens L3 may also be provided with other concave and convex distributions, and the third lens L3 may also have a negative refractive power.

In this embodiment, a central curvature radius of an object-side surface of the third lens L3 is defined as R5, and a central curvature radius of an image-side surface of the third lens L3 is defined as R6, and a following relational expression is satisfied: −2.06≤(R5+R6)/(R5−R6)≤−0.30, which specifies a shape of the third lens L3 is, within a specified range, the degree of deflection of light passing through the lens can be mitigated, which is beneficial to correcting the problems such as the aberration of the off-axis angle.

In this embodiment, an on-axis thickness of the third lens L3 is defined as d5, and a following relational expression is satisfied: 0.03≤d5/TTL≤0.09, which specifies a ratio of the on-axis thickness d5 of the third lens L3 to the total optical length from the object-side surface of the first lens to an image plane of the camera optical lens 10 along an optic axis TTL of the camera optical lens 10, which is beneficial to achieving ultra-thinness.

In this embodiment, an object-side surface of the fourth lens L4 is concave in a paraxial region, an image-side surface of the fourth lens L4 is convex in the paraxial region, and the fourth lens L4 has a negative refractive power. In other optional embodiments, the object-side surface and the image-side surface of the fourth lens L4 may also be provided with other concave and convex distributions, and the fourth lens L4 may also have a positive refractive power.

In this embodiment, a focal length f4 of the fourth lens L4 and a focal length f of the camera optical lens 10 satisfy a following relational expression: −6.91≤f4/f≤−1.58, which specifies a ratio of the focal length f4 of the fourth lens L4 to the focal length f of the camera optical lens 10, and the refractive power is reasonably distributed, so that the system has better imaging quality and lower sensitivity.

In this embodiment, a central curvature radius of an object-side surface of the fourth lens L4 is defined as R7, and a central curvature radius of an image-side surface of the fourth lens L4 is defined as R8, and a following relational expression is satisfied: −7.81≤(R7+R8)/(R7−R8)≤−0.07, which specifies a shape of the fourth lens L4, and within a specified range, the degree of deflection of light passing through the lens can be mitigated, which is beneficial to correcting the problems such as the aberration of the off-axis angle.

In the present embodiment, an on-axis thickness of the fourth lens L4 is defined as d7, and a following relational expression is satisfied: 0.01≤d7/TTL≤0.04, which specifies a ratio of the on-axis thickness d7 of the fourth lens L4 to the total optical length from the object-side surface of the first lens to an image plane of the camera optical lens 10 along an optic axis TTL of the camera optical lens 10, which is beneficial to achieving ultra-thinness.

In this embodiment, an object-side surface of the fifth lens L5 is convex in a paraxial region, an image-side surface of the fifth lens L5 is concave in the paraxial region, and the fifth lens L5 has a positive refractive power. In other optional embodiments, the object-side surface and the image-side surface of the fifth lens L5 may also be provided with other concave and convex distributions, and the fifth lens L5 may also have a negative refractive power.

In this embodiment, a focal length f5 of the fifth lens L5 and a focal length f of the camera optical lens 10 satisfy a following relational expression: 1.70≤f5/f≤3.63, which specifies a ratio of the focal length f5 of the fifth lens L5 to the focal length f of the camera optical lens 10, and the refractive power is reasonably distributed, so that the system has better imaging quality and lower sensitivity.

In this embodiment, a central curvature radius of an object-side surface of the fifth lens L5 is defined as R9, a central curvature radius of an image-side surface of the fifth lens L5 is defined as R10, a following relational expression is satisfied: −2.38≤(R9+R10)/(R9−R10)≤−0.34, which specifies a shape of the fifth lens L5, within a specified range, the degree of deflection of light passing through the lens can be mitigated, which is beneficial to correcting the problems such as the aberration of the off-axis angle.

In this embodiment, an on-axis thickness of the fifth lens L5 is defined as d9, and a following relational expression is satisfied: 0.03≤d9/TTL≤0.15, which specifies a ratio of the on-axis thickness d9 of the fifth lens L5 to the total optical length from the object-side surface of the first lens to an image plane of the camera optical lens 10 along an optic axis TTL of the camera optical lens 10, which is beneficial to achieving ultra-thinness.

In this embodiment, an object-side surface of the sixth lens L6 is convex in a paraxial region, an image-side surface of the sixth lens L6 is concave in the paraxial region, and the sixth lens L6 has a positive refractive power. In other optional embodiments, the object-side surface and the image-side surface of the sixth lens L6 may also be provided with other concave and convex distributions, and the sixth lens L6 may also have a negative refractive power.

In this embodiment, a focal length of the sixth lens L6 is defined as f6, and a following relational expression is satisfied: −20.00≤f6/f≤49.00, which specifies a ratio of the focal length f6 of the sixth lens L6 to the focal length f of the camera optical lens 10, and the refractive power is reasonably distributed, so that the system has better imaging quality and lower sensitivity.

In this embodiment, a central curvature radius of an object-side surface of the sixth lens L6 is defined as R11, and a central curvature radius of an image-side surface of the sixth lens L6 is defined as R12, a following relational expression is satisfied: −70.00≤(R11+R12)/(R11−R12)≤11.35, which specifies a shape of the sixth lens L6, within a specified range, the degree of deflection of light passing through the lens can be mitigated, which is beneficial to correcting the problems such as the aberration of the off-axis angle.

In this embodiment, an on-axis thickness of the sixth lens L6 is defined as d11, and a following relational expression is satisfied: 0.02≤d11/TTL≤0.07, which specifies a ratio of the on-axis thickness d11 of the sixth lens L6 to the total optical length from the object-side surface of the first lens to an image plane of the camera optical lens 10 along an optic axis TTL of the camera optical lens 10, which is beneficial to achieving ultra-thinness.

In this embodiment, an object-side surface of the seventh lens L7 is convex in a paraxial region, an image-side surface of the seventh lens L7 is concave in the paraxial region, and the seventh lens L7 has a positive refractive power. In other optional embodiments, the object-side surface and the image-side surface of the seventh lens L7 may also be provided with other concave and convex distributions, and the seventh lens L7 may also have a negative refractive power.

In this embodiment, a focal length of the seventh lens L7 is defined as f7, the focal length of the seventh lens L7 and the focal length of the camera optical lens 10 satisfy a following relational expression: 4.60≤f7/f≤70.00, which specifies a ratio of the focal length f7 of the seventh lens L7 to the focal length f of the camera optical lens 10, and the refractive power is reasonably distributed, so that the system has better imaging quality and lower sensitivity.

In this embodiment, a central curvature radius of an object-side surface of the seventh lens L7 is defined as R13, a central curvature radius of an image-side surface of the seventh lens L7 is defined as R14, and a following relational expression is satisfied: −17.00≤(R13+R14)/(R13−R14)≤39.00, which specifies a shape of the seventh lens L7, within a specified range, the degree of deflection of light passing through the lens can be mitigated, which is beneficial to correcting the problems such as the aberration of the off-axis angle.

In the present embodiment, an on-axis thickness of the seventh lens L7 is defined as d13, and a following relational expression is satisfied: 0.04≤d13/TTL≤0.25, which specifies a ratio of the on-axis thickness d13 of the seventh lens L7 to the total optical length from the object-side surface of the first lens to an image plane of the camera optical lens 10 along an optic axis TTL of the camera optical lens 10, which is beneficial to achieving ultra-thinness.

In this embodiment, a f-number of the camera optical lens 10 is defined as FNO, and a following relational expression is satisfied: FNO≤1.30, so that the camera lens meets a requirement of a large-aperture.

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

TTL: The unit of the total optical length from the object-side surface of the first lens to an image plane of the camera optical lens 10 along an optic axis (the on-axis distance from the object-side surface of the first lens L1 to the image surface Si) is mm.

In addition, the object-side surface and/or the image-side surface of each lens may also be provided with an inflection point and/or a stationary point, so as to meet high-quality imaging requirements.

Table 1 shows design data of the camera optical lens 10 according to Embodiment 1 of the present disclosure, the specific implementable solution, refer to the following.

TABLE 1

R
d

nd
vd

S1
∞
d0 =
−30.780

R1
35.845
d1 =
2.650
nd1
1.9037
v1
31.32

R2
11.705
d2 =
9.653

R3
−22.828
d3 =
13.440
nd2
1.7400
v2
28.29

R4
−69.229
d4 =
0.200

R5
24.716
d5 =
5.540
nd3
1.9037
v3
31.32

R6
−73.050
d6 =
6.842

R7
−23.546
d7 =
1.800
nd4
1.8467
v4
23.83

R8
−80.685
d8 =
0.200

R9
20.156
d9 =
5.620
nd5
1.9108
v5
35.26

R10
111.436
d10 =
2.918

R11
31.743
d11 =
2.310
nd6
1.8061
v6
40.73

R12
39.524
d12 =
6.397

R13
17.951
d13 =
3.607
nd7
1.8061
v7
40.73

R14
29.869
d14 =
3.000

R15
∞
d15 =
0.500
ndg
1.4585
vg
67.82

R16
∞
d16 =
5.267

Wherein, the meaning of each symbol is as follows:

- S1: aperture;
- R: central curvature radius at the center of the optical surface;
- R1: central curvature radius of the object-side surface of the first lens L1;
- R2: central curvature radius of the image-side surface of the first lens L1;
- R3: central curvature radius of the object-side surface of the second lens L2;
- R4: central curvature radius of the image-side surface of the second lens L2;
- R5: central curvature radius of the object-side surface of the third lens L3;
- R6: central curvature radius of the image-side surface of the third lens L3;
- R7: central curvature radius of the object-side surface of the fourth lens L4;
- R8: central curvature radius of the image-side surface of the fourth lens L4;
- R9: central curvature radius of the object-side surface of the fifth lens L5;
- R10: central curvature radius of the image-side surface of the fifth lens L5;
- R11: central curvature radius of the object-side surface of the sixth lens L6;
- R12: central curvature radius of the image-side surface of the sixth lens L6;
- R13: central curvature radius of the object-side surface of the seventh lens L7;
- R14: central curvature radius of the image-side surface of the seventh lens L7;
- R15: central curvature radius of the object-side surface of the optical filter GF;
- R16: central curvature radius of the image-side surface of the optical filter GF;
- d: on-axis thickness of lenses, on-axis distance between lenses;
- d0: on-axis distance from the aperture S1 to the object-side surface of the first lens L1;
- d1: on-axis thickness of the first lens L1;
- d2: on-axis distance from the image-side surface of the first lens L1 to the object-side surface of the second lens L2;
- d3: on-axis thickness of the second lens L2;
- d4: on-axis distance from the image-side surface of the second lens L2 to the object-side surface of the third lens L3;
- d5: on-axis thickness of the third lens L3;
- d0: on-axis distance from the image-side surface of the third lens L3 to the object-side surface of the fourth lens L4;
- d7: on-axis thickness of the fourth lens L4;
- d8: on-axis distance from the image-side surface of the fourth lens L4 to the object-side surface of the fifth lens L5;
- d9: on-axis thickness of the fifth lens L5;
- d10: on-axis distance from the image-side surface of the fifth lens L5 to the object-side surface of the sixth lens L6;
- d11: on-axis thickness of the sixth lens L6;
- d12: on-axis distance from the image-side surface of the sixth lens L6 to the object-side surface of the seventh lens L7;
- d13: on-axis thickness of the seventh lens L7;
- d14: on-axis distance from the image-side surface of the seventh lens L7 to the object-side surface of the optical filter GF
- d15: on-axis thickness of the optical filter GF;
- d16: on-axis distance from the image-side surface of the optical filter GF to the image surface Si;
- nd: refractive index of d line;
- nd1: refractive index of d line of the first lens L1;
- nd2: refractive index of d line of the second lens L2;
- nd3: refractive index of d line of the third lens L3;
- nd4: refractive index of d line of the fourth lens L4;
- nd5: refractive index of d line of the fifth lens L5;

nd6: refractive index of d line of the sixth lens L6;

nd7: refractive index of d line of the seventh lens L7;

ndg: refractive index of d line 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 L4;

v5: abbe number of the fifth lens L5;

v6: abbe number of the sixth lens L6;

v7: abbe number of the seventh lens L7; and

vg: abbe number of the optical filter GF.

Table 2 shows aspheric surface data of the sixth lens L6 and the seventh lens L7 in the camera optical lens 10 according to Embodiment 1 of the present disclosure.

TABLE 2

Conic Coefficient
Aspherical Coefficient

k
A4
A6
A8
A10
A12

R11
−3.7924E+01
1.2430E−05
−2.3178E−06
4.3545E−08
−6.6120E−10
9.1925E−12

R12
1.9704E+00
−9.0058E−05
7.4032E−07
−1.2236E−08
4.5122E−10
−7.7888E−12

R13
−1.4168E+01
2.1209E−04
−5.6482E−06
1.1425E−07
−1.9224E−09
2.3506E−11

R14
−9.0448E+00
−1.4884E−05
−1.7416E−06
4.9751E−08
−1.1837E−09
1.9398E−11

Conic Coefficient
Aspherical Coefficient

k
A14
A16
A18
A20

R11
−3.7924E+01
−8.9115E−14
4.9811E−16
−1.4123E−18
1.5462E−21

R12
1.9704E+00
8.8553E−14
−6.5578E−16
2.5795E−18
−3.6317E−21

R13
−1.4168E+01
−1.8811E−13
9.1329E−16
−2.3850E−18
2.5585E−21

R14
−9.0448E+00
−2.0165E−13
1.2951E−15
−4.7638E−18
7.9126E−21

Wherein, k is the conic coefficient, A4, A6, A8, A10, A12, A14, A16, A18, and A20 are aspheric coefficients.

$\begin{matrix} y = (x^{2} / R) / [1 + {1 - (k + 1) (x^{2} / R^{2})}^{1 / 2}] + A 4 x^{4} + A 6 x^{6} + A 8 x^{8} + A 10 x^{10} + A 12 x^{12} + A 14 x^{14} + A 16 x^{16} + A 18 x^{18} + A 20 x^{20} & (1) \end{matrix}$

Wherein, x is a vertical distance between a point on the aspheric curve and the optical axis, and y is a depth of the aspheric surface (a vertical distance between a point on the aspheric surface at a distance x from the optical axis and a tangent plane tangent to a vertex on the aspheric optical axis).

For convenience, the aspheric surface of each lens surface uses the aspheric surface shown in the above formula (1). However, the present invention is not limited to the aspheric polynomial form represented by the formula (1).

Table 3 and Table 4 show design data of inflection points and stationary points of each lens in the camera optical lens 10 according to Embodiment 1 of the present disclosure. Wherein, PIR1 and PIR2 respectively represent the object-side surface and the image-side surface of the first lens L1, P2R1 and P2R2 respectively represent the object-side surface and the image-side surface of the second lens L2, P3R1 and P3R2 respectively represent the object-side surface and the image-side surface of the third lens L3, P4R1 and P4R2 respectively represent the object-side surface and the image-side surface of the fourth lens L4, P5R1 and P5R2 respectively represent the object-side surface and the image-side surface of the fifth lens L5, P6R1 and P6R2 respectively represent the object-side surface and the image-side surface of the fifth lens L6, P7R1 and P7R2 respectively represent the object-side surface and the image-side surface of the fifth lens L7. The corresponding data in the column “Inflection point position” is the vertical distance from the inflection point provided with the surface of each lens to the optical axis of the camera optical lens 10. The corresponding data in the column “Stationary point position” is a vertical distance from the stationary point provided with the surface of each lens to the optical axis of the camera optical lens 10.

TABLE 3

Number of
Inflection point
Inflection point

inflection points
position 1
position 2

P1R1
0
/
/

P1R2
0
/
/

P2R1
0
/
/

P2R2
0
/
/

P3R1
0
/
/

P3R2
0
/
/

P4R1
0
/
/

P4R2
0
/
/

P5R1
0
/
/

P5R2
0
/
/

P6R1
1
4.635
/

P6R2
0
/
/

P7R1
0
/
/

P7R2
2
5.585
9.745

TABLE 4

Number of stationary points
Stationary point position 1

P1R1
0
/

P1R2
0
/

P2R1
0
/

P2R2
0
/

P3R1
0
/

P3R2
0
/

P4R1
0
/

P4R2
0
/

P5R1
0
/

P5R2
0
/

P6R1
1
9.305

P6R2
0
/

P7R1
0
/

P7R2
0
/

FIG. 2 shows field curvature and distortion of light with a wavelength of 940 nm after passing through the camera optical lens 10. The field curvature S in FIG. 2 is the field curvature in a sagittal direction, and T is the field curvature in a meridional direction. FIG. 3 and FIG. 4 respectively show lateral color and longitudinal aberration of light with wavelengths 930 nm, 940 nm and 950 nm after passing through the camera optical lens 10.

As shown in Table 25, Embodiment 1 satisfies each relational expression.

In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 10 is 8.361 mm, the full field of view image height IH in a diagonal direction is 9.615 mm, and the field of view FOV in the diagonal direction is 101.60°, so that the camera optical lens 10 meets the design requirements of a large-aperture, wide-angle, ultra-thinness, lower-sensitivity and medium- to long-range distance imaging, its on-axis and off-axis chromatic aberrations are fully corrected, and has good optical characteristics.

Embodiment 2

FIG. 5 is a structural schematic diagram of a camera optical lens 20 in Embodiment 2, Embodiment 2 is substantially the same as Embodiment 1, and the symbol meaning thereof is also the same as that of Embodiment 1, so the same parts are not described herein again, and only differences are listed below.

In this embodiment, the sixth lens L6 has a negative refractive power.

Table 5 shows design data of the camera optical lens 20 according to Embodiment 2 of the present disclosure.

TABLE 5

R
d

nd
vd

S1
∞
d0 =
−35.959

R1
30.467
d1 =
5.844
nd1
1.9037
v1
31.32

R2
13.139
d2 =
11.972

R3
−22.160
d3 =
7.728
nd2
1.7400
v2
28.29

R4
−35.127
d4 =
0.190

R5
28.500
d5 =
6.334
nd3
1.9037
v3
31.32

R6
−83.515
d6 =
14.559

R7
−14.519
d7 =
2.175
nd4
1.8467
v4
23.83

R8
−18.786
d8 =
0.196

R9
18.876
d9 =
6.877
nd5
1.9108
v5
35.26

R10
93.985
d10 =
3.940

R11
37.639
d11 =
2.100
nd6
1.8061
v6
40.73

R12
31.543
d12 =
3.103

R13
23.659
d13 =
4.239
nd7
1.8061
v7
40.73

R14
22.451
d14 =
2.472

R15
∞
d15 =
0.500
ndg
1.4585
vg
67.82

R16
∞
d16 =
1.303

Table 6 shows aspheric surface data of the sixth lens L6 and the seventh lens L7 in the camera optical lens 20 according to Embodiment 2 of the present disclosure.

TABLE 6

Conic Coefficient
Aspherical Coefficient

k
A4
A6
A8
A10
A12

R11
−6.2054E+01
1.8608E−05
−2.3003E−06
4.3612E−08
−6.6162E−10
9.1923E−12

R12
−6.2216E−01
−1.0041E−04
7.8118E−07
−1.2357E−08
4.4822E−10
−7.8074E−12

R13
−3.0289E+01
1.0604E−04
−5.6678E−06
1.1514E−07
−1.9171E−09
2.3536E−11

R14
−3.3281E+00
−9.8317E−05
−1.7091E−06
5.1415E−08
−1.1713E−09
1.9463E−11

Conic Coefficient
Aspherical Coefficient

k
A14
A16
A18
A20

R11
−6.2054E+01
−8.9100E−14
4.9851E−16
−1.4076E−18
1.4948E−21

R12
−6.2216E−01
8.8509E−14
−6.5604E−16
2.5739E−18
−3.7120E−21

R13
−3.0289E+01
−1.8802E−13
9.1354E−16
−2.3953E−18
2.3152E−21

R14
−3.3281E+00
−2.0138E−13
1.2968E−15
−4.7468E−18
8.5019E−21

Table 7 and Table 8 show design data of inflection points and stationary points of each lens in the camera optical lens 20 according to Embodiment 2 of the present disclosure.

TABLE 7

Number of
Inflection point
Inflection point

inflection points
position 1
position 2

P1R1
0
/
/

P1R2
0
/
/

P2R1
0
/
/

P2R2
0
/
/

P3R1
0
/
/

P3R2
0
/
/

P4R1
0
/
/

P4R2
0
/
/

P5R1
0
/
/

P5R2
0
/
/

P6R1
1
4.505
/

P6R2
1
10.185
/

P7R1
1
4.695
/

P7R2
2
4.895
8.195

TABLE 8

Number of stationary points
Stationary point position 1

P1R1
0
/

P1R2
0
/

P2R1
0
/

P2R2
0
/

P3R1
0
/

P3R2
0
/

P4R1
0
/

P4R2
0
/

P5R1
0
/

P5R2
0
/

P6R1
1
9.355

P6R2
0
/

P7R1
1
8.465

P7R2
0
/

FIG. 6 shows field curvature and distortion of light with a wavelength of 940 nm after passing through the camera optical lens 20. The field curvature S in FIG. 6 is the field curvature in a sagittal direction, and T is the field curvature in a meridional direction. FIG. 7 and FIG. 8 respectively show lateral color and longitudinal aberration of light with wavelengths 930 nm, 940 nm and 950 nm after passing through the camera optical lens 20.

As shown in Table 25, Embodiment 2 satisfies each relational expression.

In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 20 is 11.315 mm, the full field of view image height IH in a diagonal direction is 9.615 mm, and the field of view FOV in the diagonal direction is 70.84°, so that the camera optical lens 20 meets the design requirements of a large-aperture, wide-angle, ultra-thinness, lower-sensitivity and medium- to long-range distance imaging, its on-axis and off-axis chromatic aberrations are fully corrected, and has good optical characteristics.

Embodiment 3

FIG. 9 is a structural schematic diagram of a camera optical lens 30 in Embodiment 3, Embodiment 3 is substantially the same as Embodiment 1, and the symbol meaning is the same as that of Embodiment 1, so the same parts are not described herein again, and only differences are listed below.

In this embodiment, an object-side surface of the first lens L1 is concave in a paraxial region, the second lens L2 has a positive refractive power, and an image-side surface of the fourth lens L4 is concave in the paraxial region.

Table 9 shows design data of the camera optical lens 30 according to Embodiment 3 of the present disclosure.

TABLE 9

R
d

nd
vd

S1
∞
d0 =
−34.210

R1
−44.644
d1 =
13.403
nd1
1.7130
v1
53.87

R2
27.031
d2 =
6.779

R3
−24.053
d3 =
7.423
nd2
1.7400
v2
28.29

R4
−24.405
d4 =
0.893

R5
22.090
d5 =
6.180
nd3
1.9037
v3
31.32

R6
−143.825
d6 =
4.854

R7
−38.372
d7 =
1.600
nd4
1.8467
v4
23.83

R8
44.320
d8 =
2.175

R9
18.896
d9 =
8.385
nd5
1.9108
v5
35.26

R10
46.376
d10 =
1.182

R11
39.455
d11 =
3.600
nd6
1.8061
v6
40.73

R12
101.714
d12 =
4.954

R13
45.987
d13 =
16.282
nd7
1.8061
v7
40.73

R14
61.462
d14 =
1.360

R15
∞
d15 =
0.500
ndg
1.4585
vg
67.82

R16
∞
d16 =
1.200

Table 10 shows aspheric surface data of the sixth lens L6 and the seventh lens L7 in the camera optical lens 30 according to Embodiment 3 of the present disclosure.

TABLE 10

Conic Coefficient
Aspherical Coefficient

k
A4
A6
A8
A10
A12

R11
−6.0416E+01
1.1534E−05
−2.2322E−06
4.3413E−08
−6.6215E−10
9.2221E−12

R12
−6.8170E+00
−7.9532E−05
8.1520E−07
−1.3309E−08
4.5914E−10
−7.6743E−12

R13
−1.7591E+02
1.3519E−04
−4.7935E−06
1.1390E−07
−1.9441E−09
2.3473E−11

R14
−1.0743E+02
−1.8145E−05
−2.0508E−06
4.6609E−08
−1.1704E−09
1.9592E−11

Conic Coefficient
Aspherical Coefficient

k
A14
A16
A18
A20

R11
−6.0416E+01
−8.8889E−14
4.9814E−16
−1.4228E−18
1.5081E−21

R12
−6.8170E+00
8.8802E−14
−6.5987E−16
2.5618E−18
−3.4806E−21

R13
−1.7591E+02
−1.8767E−13
9.1555E−16
−2.3904E−18
2.4654E−21

R14
−1.0743E+02
−2.0114E−13
1.2884E−15
−4.8387E−18
8.1689E−21

Table 11 and Table 12 show design data of inflection points and stationary points of each lens in the camera optical lens 30 according to Embodiment 3 of the present disclosure.

TABLE 11

Number of
Inflection point
Inflection point

inflection points
position 1
position 2

P1R1
0
/
/

P1R2
0
/
/

P2R1
0
/
/

P2R2
0
/
/

P3R1
0
/
/

P3R2
0
/
/

P4R1
0
/
/

P4R2
0
/
/

P5R1
0
/
/

P5R2
0
/
/

P6R1
1
4.455
/

P6R2
2
3.835
5.385

P7R1
0
/
/

P7R2
2
3.655
11.245

TABLE 12

Number of stationary points
Stationary point position 1

P1R1
0
/

P1R2
0
/

P2R1
0
/

P2R2
0
/

P3R1
0
/

P3R2
0
/

P4R1
0
/

P4R2
0
/

P5R1
0
/

P5R2
0
/

P6R1
1
10.445

P6R2
0
/

P7R1
0
/

P7R2
1
6.015

FIG. 10 shows field curvature and distortion of light with a wavelength of 940 nm after passing through the camera optical lens 30. The field curvature S in FIG. 10 is the field curvature in a sagittal direction, and T is the field curvature in a meridional direction. FIG. 11 and FIG. 12 respectively show lateral color and longitudinal aberration of light with wavelengths 930 nm, 940 nm and 950 nm after passing through the camera optical lens 30. As shown in Table 25, Embodiment 3 satisfies each relational expression.

In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 30 is 12.153 mm, the full field of view image height IH in a diagonal direction is 9.615 mm, and the field of view FOV in the diagonal direction is 85.11°, so that the camera optical lens 30 meets the design requirements of large-aperture, wide-angle, ultra-thinness, lower-sensitivity and medium- to long-range distance imaging, its on-axis and off-axis chromatic aberrations are fully corrected, and has good optical characteristics.

Embodiment 4

FIG. 13 is a structural schematic diagram of a camera optical lens 40 in Embodiment 4, Embodiment 4 is substantially the same as Embodiment 1, and the symbols are the same as those in Embodiment 1, so the same parts are not described herein again, and only differences are listed below.

In this embodiment, an image-side surface of the fifth lens L5 is convex in a paraxial region.

Table 13 shows design data of the camera optical lens 40 according to Embodiment 4 of the present disclosure.

TABLE 13

R
d

nd
vd

S1
∞
d0 =
−27.140

R1
17.252
d1 =
8.532
nd1
2.1042
v1
17.02

R2
7.587
d2 =
10.273

R3
−86.459
d3 =
5.189
nd2
1.7400
v2
28.29

R4
−1296.880
d4 =
0.190

R5
14.129
d5 =
3.533
nd3
1.9037
v3
31.32

R6
−26.542
d6 =
2.883

R7
−10.960
d7 =
1.834
nd4
1.8467
v4
23.83

R8
−24.292
d8 =
0.196

R9
25.621
d9 =
2.500
nd5
1.9108
v5
35.26

R10
−52.286
d10 =
1.199

R11
27.734
d11 =
2.866
nd6
1.8061
v6
40.73

R12
28.539
d12 =
2.402

R13
11.226
d13 =
2.295
nd7
1.8061
v7
40.73

R14
10.622
d14 =
1.715

R15
∞
d15 =
0.500
ndg
1.4585
vg
67.82

R16
∞
d16 =
1.194

Table 14 shows aspheric surface data of the sixth lens L6 and the seventh lens L7 in the camera optical lens 40 according to Embodiment 4 of the present disclosure.

TABLE 14

Conic Coefficient
Aspherical Coefficient

k
A4
A6
A8
A10
A12

R11
−9.6464E+01
6.2496E−05
−3.6998E−06
2.2072E−08
−8.2547E−10
8.8536E−12

R12
−1.5351E+02
−9.1973E−05
2.7279E−06
−2.3790E−08
−2.1343E−11
−1.7875E−11

R13
−1.2084E+01
−7.3405E−04
−9.9341E−06
1.6800E−07
−1.7911E−09
3.0219E−11

R14
−6.8598E+00
−6.9922E−04
−7.0965E−07
1.0421E−07
−1.0453E−09
1.6217E−11

Conic Coefficient
Aspherical Coefficient

k
A14
A16
A18
A20

R11
−9.6464E+01
−2.1121E−13
−5.5385E−16
3.0697E−17
−5.7859E−19

R12
−1.5351E+02
−4.3287E−14
−1.1874E−15
8.3538E−18
2.3131E−19

R13
−1.2084E+01
−1.6264E−13
−3.6488E−15
−1.2038E−16
−4.8431E−18

R14
−6.8598E+00
−2.5703E−13
8.8356E−16
−3.3521E−18
1.1351E−19

Table 15 and Table 16 show design data of inflection points and stationary points of each lens in the camera optical lens 40 according to Embodiment 4 of the present disclosure.

TABLE 15

Number of inflection points
Inflection point position 1

P1R1
0
/

P1R2
0
/

P2R1
0
/

P2R2
0
/

P3R1
0
/

P3R2
0
/

P4R1
0
/

P4R2
0
/

P5R1
0
/

P5R2
0
/

P6R1
1
3.625

P6R2
1
3.895

P7R1
1
2.255

P7R2
1
2.675

TABLE 16

Number of stationary points
Stationary point position 1

P1R1
0
/

P1R2
0
/

P2R1
0
/

P2R2
0
/

P3R1
0
/

P3R2
0
/

P4R1
0
/

P4R2
0
/

P5R1
0
/

P5R2
0
/

P6R1
1
5.605

P6R2
1
5.855

P7R1
1
3.995

P7R2
1
4.985

FIG. 14 shows field curvature and distortion of light with a wavelength of 940 nm after passing through the camera optical lens 40. The field curvature S in FIG. 14 is the field curvature in a sagittal direction, and T is the field curvature in a meridional direction. FIG. 15 and FIG. 16 respectively show lateral color and longitudinal aberration of light with wavelengths 930 nm, 940 nm and 950 nm after passing through the camera optical lens 40.

As shown in Table 25, Embodiment 4 satisfies each relational expression.

In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 40 is 7.644 mm, the full field of view image height IH in a diagonal direction is 9.615 mm, and the field of view FOV in the diagonal direction is 88.61°, so that the camera optical lens 40 meets the design requirements of large-aperture, wide-angle, ultra-thinness, lower-sensitivity and medium- to long-range distance imaging, its on-axis and off-axis chromatic aberrations are fully corrected, and has good optical characteristics.

Embodiment 5

FIG. 17 is a structural schematic diagram of the camera optical lens 50 in Embodiment 5, Embodiment 5 is substantially the same as Embodiment 1, and the symbols are the same as those in Embodiment 1, so the same parts are not described herein again, and only differences are listed below.

In this embodiment, an image-side surface of the third lens L3 is concave in a paraxial region, and an image-side surface of the fourth lens L4 is concave in the paraxial region.

Table 17 shows design data of the camera optical lens 50 according to Embodiment 5 of the present disclosure.

TABLE 17

R
d

nd
vd

S1
∞
d0 =
−95.599

R1
57.638
d1 =
14.472
nd1
1.9037
v1
31.32

R2
20.165
d2 =
19.636

R3
−59.037
d3 =
24.298
nd2
1.7400
v2
28.29

R4
−292.232
d4 =
17.267

R5
28.795
d5 =
4.883
nd3
1.9037
v3
31.32

R6
83.464
d6 =
8.465

R7
−32.240
d7 =
2.000
nd4
1.8467
v4
23.83

R8
37.971
d8 =
0.196

R9
25.891
d9 =
3.939
nd5
1.9108
v5
35.26

R10
146.967
d10 =
1.200

R11
19.214
d11 =
7.720
nd6
1.8061
v6
40.73

R12
303.248
d12 =
1.288

R13
18.146
d13 =
8.429
nd7
1.8061
v7
40.73

R14
20.462
d14 =
9.348

R15
∞
d15 =
0.500
ndg
1.4585
vg
67.82

R16
∞
d16 =
2.368

Table 18 shows aspheric surface data of the sixth lens L6 and the seventh lens L7 in the camera optical lens 50 according to Embodiment 5 of the present disclosure.

TABLE 18

Conic Coefficient
Aspherical Coefficient

k
A4
A6
A8
A10
A12

R11
−9.8457E+00
1.5236E−04
−2.1153E−06
3.7101E−08
−6.8313E−10
9.4373E−12

R12
6.7433E+02
−9.0105E−05
9.3292E−07
−2.0078E−08
4.2937E−10
−7.6450E−12

R13
−1.5863E+01
2.1931E−04
−5.4163E−06
1.1234E−07
−1.9322E−09
2.3137E−11

R14
4.2201E+00
4.6531E−05
−1.1757E−06
3.4336E−08
−1.2184E−09
2.2172E−11

Conic Coefficient
Aspherical Coefficient

k
A14
A16
A18
A20

R11
−9.8457E+00
−8.7139E−14
4.9200E−16
−1.5271E−18
1.9804E−21

R12
6.7433E+02
8.9739E−14
−6.4630E−16
2.6119E−18
−4.5847E−21

R13
−1.5863E+01
−1.8294E−13
1.0238E−15
−4.8289E−18
1.4631E−20

R14
4.2201E+00
−2.1130E−13
1.1508E−15
−1.3535E−17
8.9145E−20

Table 19 and Table 20 show design data of inflection points and stationary points of each lens in the camera optical lens 50 according to Embodiment 5 of the present disclosure.

TABLE 19

Number of
Inflection point
Inflection point

inflection points
position 1
position 2

P1R1
0
/
/

P1R2
0
/
/

P2R1
0
/
/

P2R2
0
/
/

P3R1
0
/
/

P3R2
0
/
/

P4R1
0
/
/

P4R2
0
/
/

P5R1
0
/
/

P5R2
0
/
/

P6R1
1
9.385
/

P6R2
2
1.855
11.405

P7R1
1
7.905
/

P7R2
0
/
/

TABLE 20

Number of stationary points
Stationary point position 1

P1R1
0
/

P1R2
0
/

P2R1
0
/

P2R2
0
/

P3R1
0
/

P3R2
0
/

P4R1
0
/

P4R2
0
/

P5R1
0
/

P5R2
0
/

P6R1
0
/

P6R2
1
3.315

P7R1
0
/

P7R2
0
/

FIG. 18 shows field curvature and distortion of light with a wavelength of 940 nm after passing through the camera optical lens 50. The field curvature S in FIG. 18 is the field curvature in a sagittal direction, and T is the field curvature in a meridional direction. FIG. 19 and FIG. 20 respectively show lateral color and longitudinal aberration of light with wavelengths 930 nm, 940 nm and 950 nm after passing through the camera optical lens 50.

As shown in Table 25, Embodiment 5 satisfies each relational expression.

In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 50 is 7.397 mm, the full field of view image height IH in a diagonal direction is 9.615 mm, and the field of view FOV in the diagonal direction is 111.94°, so that the camera optical lens 50 meets the design requirements of large-aperture, wide-angle, ultra-thinness, lower-sensitivity and medium- to long-range distance imaging, its on-axis and off-axis chromatic aberrations are fully corrected, and has good optical characteristics.

COMPARATIVE EXAMPLE

FIG. 21 is a structural schematic diagram of a camera optical lens 60 in a Comparative Example, and the symbol meaning thereof is the same as that in Embodiment 1, so the same parts are not described herein again.

Table 21 shows design data of the camera optical lens 60 of the present disclosure.

TABLE 21

R
d

nd
vd

S1
∞
d0 =
−60.832

R1
−205.992
d1 =
13.403
nd1
1.7130
v1
53.87

R2
17.592
d2 =
11.813

R3
−26.115
d3 =
11.283
nd2
1.7400
v2
28.29

R4
−29.362
d4 =
10.843

R5
24.007
d5 =
7.734
nd3
1.9037
v3
31.32

R6
−143.404
d6 =
5.756

R7
−33.421
d7 =
1.607
nd4
1.8467
v4
23.83

R8
49.986
d8 =
0.215

R9
22.176
d9 =
8.693
nd5
1.9108
v5
35.26

R10
142.457
d10−
2.241

R11
36.165
d11 =
2.971
nd6
1.8061
v6
40.73

R12
60.880
d12 =
3.230

R13
28.546
d13 =
12.818
nd7
1.8061
v7
40.73

R14
48.068
d14 =
1.481

R15
∞
d15 =
0.500
ndg
1.4585
vg
67.82

R16
∞
d16 =
1.200

Table 22 shows aspheric surface data of the sixth lens L6 and the seventh lens L7 in the camera optical lens 60 according to the Comparative Example of the present disclosure.

TABLE 22

Conic Coefficient
Aspherical Coefficient

k
A4
A6
A8
A10
A12

R11
−6.9682E+01
1.6004E−05
−2.4151E−06
4.4004E−08
−6.5270E−10
9.2623E−12

R12
−1.1962E+02
−8.8820E−05
8.6501E−07
−1.3338E−08
4.5563E−10
−7.6332E−12

R13
−4.8801E+01
1.5640E−04
−4.9131E−06
1.1424E−07
−1.9404E−09
2.3453E−11

R14
−7.2746E+01
7.5410E−06
−1.9786E−06
4.5749E−08
−1.1774E−09
1.9589E−11

Conic Coefficient
Aspherical Coefficient

k
A14
A16
A18
A20

R11
−6.9682E+01
−8.8925E−14
4.9648E−16
−1.4363E−18
1.4951E−21

R12
−1.1962E+02
8.9709E−14
−6.5167E−16
2.5764E−18
−4.2128E−21

R13
−4.8801E+01
−1.8769E−13
9.1784E−16
−2.3786E−18
2.2742E−21

R14
−7.2746E+01
−2.0084E−13
1.2905E−15
−4.8392E−18
8.0905E−21

Table 23 and Table 24 show design data of inflection points and stationary points of each lens in the camera optical lens 60 according to the Comparative Example of the present disclosure.

TABLE 23

Number of
Inflection point
Inflection point

inflection points
position 1
position 2

P1R1
0
/
/

P1R2
0
/
/

P2R1
0
/
/

P2R2
0
/
/

P3R1
0
/
/

P3R2
0
/
/

P4R1
0
/
/

P4R2
0
/
/

P5R1
0
/
/

P5R2
0
/
/

P6R1
1
9.385
/

P6R2
2
1.855
11.405

P7R1
1
7.905
/

P7R2
0
/
/

TABLE 24

Number of stationary points
Stationary point position 1

P1R1
0
/

P1R2
0
/

P2R1
0
/

P2R2
0
/

P3R1
0
/

P3R2
0
/

P4R1
0
/

P4R2
0
/

P5R1
0
/

P5R2
0
/

P6R1
0
/

P6R2
1
3.315

P7R1
0
/

P7R2
0
/

FIG. 22 shows field curvature and distortion of light with a wavelength of 940 nm after passing through the camera optical lens 60. The field curvature S in FIG. 22 is the field curvature in a sagittal direction, and T is the field curvature in a meridional direction. FIG. 23 and FIG. 24 respectively show lateral color and longitudinal aberration of light with wavelengths 930 nm, 940 nm and 950 nm after passing through the camera optical lens 60.

In this comparative example, the entrance pupil diameter ENPD of the camera optical lens 60 is 7.9876 mm, the full field of view image height IH in a diagonal direction is 9.615 mm, and the field of view FOV in the diagonal direction is 133.76°.

Table 25 shows the values corresponding to the various values and parameters specified in the relational expressions in Embodiments 1-5 and the Comparative Example. Obviously, the camera optical lens 60 in the Comparative Example does not satisfy the above relational expression: 90.00≤(FOV×f)/IH≤140.00. The camera optical lens 60 cannot effectively consider a large field of view and a long focal length, cannot achieve medium- to long-range distance imaging, and has insufficient optical performance.

TABLE 25

Parameters and

Relational

Comparative

Expressions
Example 1
Example 2
Example 3
Example 4
Example 5
Example

d6/TTL
0.10
0.20
0.06
0.06
0.07
0.06

(FOV × f)/IH
114.85
108.37
139.85
91.58
111.95
144.46

f3/f
1.99
1.69
1.41
1.10
5.00
2.31

R4/R3
3.03
1.58
1.01
15.00
4.95
1.12

f
10.869
14.709
15.799
9.938
9.616
10.384

f1
−20.873
−31.247
−22.343
−23.530
−43.124
−22.605

f2
−54.054
−111.487
298.090
−129.466
−107.908
730.783

f3
21.613
24.867
22.203
10.950
48.078
23.947

f4
−41.322
−101.587
−24.982
−26.081
−21.093
−24.330

f5
26.955
25.524
31.435
19.678
34.891
28.632

f6
181.086
−291.595
79.825
486.197
25.743
107.444

f7
50.416
1022.580
158.489
372.281
78.206
69.237

f12
−14.196
−24.591
−29.166
−19.393
−28.750
−28.555

FNO
1.30
1.30
1.30
1.30
1.30
1.30

Among them, f12 is a combined focal length of the first lens L1 and the second lens L2.

Those skilled in the art can understand that the above embodiments are specific embodiments for implementing the present disclosure, and in practical applications, various changes may be made in form and detail without departing from the spirit and scope of the present disclosure.

CAMERA OPTICAL LENS

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CPC

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