WO2021128187A1 - Photographing optical lens - Google Patents

Abstract

A photographing optical lens (10). The photographing optical lens (10), from an object side to an image side, sequentially comprises: 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); and the following relational expressions are satisfied: 100.00°≤FOV≤135.00°; 1.00≤f3/f≤8.00; and 1.55≤d1/d5≤3.00. The photographing optical lens (10) has high imaging performance and also achieves low TTL.

Description

Camera optical lens Technical field

This application relates to the field of optical lenses, and in particular to a camera optical lens suitable for portable terminal equipment such as smart phones and digital cameras, as well as camera devices such as monitors and PC lenses.

Background technique

In recent years, with the rise of smart phones, the demand for miniaturized photographic lenses has increased. The photosensitive devices of general photographic lenses are nothing more than photosensitive coupled devices (CCD) or complementary metal oxide semiconductor devices (Complementary Metal). -Oxide Semiconductor Sensor, CMOS Sensor), and due to the advancement of semiconductor manufacturing technology, the pixel size of photosensitive devices has been reduced, and the development trend of current electronic products with good functions, thin and short appearance, therefore, has The miniaturized camera lens with good image quality has become the mainstream in the current market.

In order to obtain better imaging quality, the lenses traditionally mounted on mobile phone cameras mostly adopt a three-element or four-element lens structure. Moreover, with the development of technology and the increase of diversified needs of users, the pixel area of photosensitive devices is shrinking, and the system's requirements for image quality continue to increase, five-element, six-element, and seven-element lens structures Gradually appeared in the lens design. There is an urgent need for an ultra-thin wide-angle camera optical lens with excellent optical characteristics.

Application content

In view of the above-mentioned problems, the purpose of the present application is to provide an imaging optical lens that can meet the requirements of ultra-thinness and wide-angle while obtaining high imaging performance.

In order to solve the above technical problems, the embodiments of the present application provide an imaging optical lens. The imaging optical lens includes a first lens, a second lens, a third lens, and a fourth lens in order from the object side to the image side. , The fifth lens, the sixth lens, and the seventh lens; the first lens has a negative refractive power, the second lens has a positive refractive power, the third lens has a positive refractive power, and the fourth lens has a negative refractive power. Refractive power; the maximum angle of view of the imaging optical lens is FOV, the focal length of the imaging optical lens is f, the focal length of the third lens is f3, the axial thickness of the first lens is d1, the The axial thickness of the third lens is d5, which satisfies the following relationship: 100.00°≤FOV≤135.00°; 1.00≤f3/f≤8.00; 1.55≤d1/d5≤3.00.

Preferably, the object side of the first lens is concave on the paraxial; the focal length of the first lens is f1, the radius of curvature of the object side of the first lens is R1, and the image side of the first lens is The radius of curvature is R2, and the total optical length of the camera optical lens is TTL, and satisfies the following relationship: -55.64≤f1/f≤-1.05; -30.47≤(R1+R2)/(R1-R2)≤1.02; 0.05 ≤d1/TTL≤0.34.

Preferably, the imaging optical lens satisfies the following relationship: -34.77≤f1/f≤-1.31; -19.04≤(R1+R2)/(R1-R2)≤0.81; 0.07≤d1/TTL≤0.27.

Preferably, the object side of the second lens is convex on the paraxial axis, and the image side of the second lens is concave on the paraxial; the focal length of the second lens is f2, and the object side of the second lens is convex on the paraxial. The radius of curvature is R3, the radius of curvature of the image side surface of the second lens is R4, the on-axis thickness of the second lens is d3, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: 0.90≤ f2/f≤250.53; -151.98≤(R3+R4)/(R3-R4)≤47.80; 0.02≤d3/TTL≤0.18.

Preferably, the imaging optical lens satisfies the following relationship: 1.44≤f2/f≤200.43; -94.99≤(R3+R4)/(R3-R4)≤38.24; 0.03≤d3/TTL≤0.14.

Preferably, the image side surface of the third lens is convex on the paraxial; the curvature radius of the object side surface of the third lens is R5, the curvature radius of the image side surface of the third lens is R6, and the imaging optical lens The total optical length is TTL, and satisfies the following relationship: -0.89≤(R5+R6)/(R5-R6)≤3.81; 0.02≤d5/TTL≤0.16.

Preferably, the imaging optical lens satisfies the following relational expression: -0.56≤(R5+R6)/(R5-R6)≤3.05; 0.03≤d5/TTL≤0.13.

Preferably, the focal length of the fourth lens is f4, the radius of curvature of the object side of the fourth lens is R7, the radius of curvature of the image side of the fourth lens is R8, and the on-axis thickness of the fourth lens is Is d7, and the total optical length of the camera optical lens is TTL, and satisfies the following relationship: -10.08≤f4/f≤-1.01; -4.66≤(R7+R8)/(R7-R8)≤4.69; 0.02≤d7 /TTL≤0.16.

Preferably, the imaging optical lens satisfies the following relationship: -6.30≤f4/f≤-1.26; -2.91≤(R7+R8)/(R7-R8)≤3.75; 0.03≤d7/TTL≤0.13.

Preferably, the image side surface of the fifth lens is convex on the paraxial; the focal length of the fifth lens is f5, the curvature radius of the object side surface of the fifth lens is R9, and the image side surface of the fifth lens is The radius of curvature is R10, the on-axis thickness of the fifth lens is d9, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: -36.51≤f5/f≤3.25; -28.62≤(R9+R10 )/(R9-R10)≤3.38; 0.02≤d9/TTL≤0.23.

Preferably, the imaging optical lens satisfies the following relationship: -22.82≤f5/f≤2.60; -17.89≤(R9+R10)/(R9-R10)≤2.71; 0.04≤d9/TTL≤0.18.

Preferably, the image side of the sixth lens is concave on the paraxial; the focal length of the sixth lens is f6, the radius of curvature of the object side of the sixth lens is R11, and the image side of the sixth lens is The radius of curvature is R12, the on-axis thickness of the sixth lens is d11, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: -18.73≤f6/f≤2.28; -6.71≤(R11+R12 )/(R11-R12)≤10.57; 0.02≤d11/TTL≤0.13.

Preferably, the imaging optical lens satisfies the following relational expressions: -11.71≤f6/f≤1.82; -4.19≤(R11+R12)/(R11-R12)≤8.46; 0.03≤d11/TTL≤0.10.

Preferably, the image side surface of the seventh lens is concave on the paraxial; the focal length of the seventh lens is f7, the curvature radius of the object side surface of the seventh lens is R13, and the image side surface of the seventh lens is The radius of curvature is R14, the axial thickness of the seventh lens is d13, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied: -2.91≤f7/f≤18.91; -52.20≤(R13+R14 )/(R13-R14)≤1.52; 0.04≤d13/TTL≤0.21.

Preferably, the imaging optical lens satisfies the following relationship: -1.82≤f7/f≤15.12; -32.63≤(R13+R14)/(R13-R14)≤1.21; 0.06≤d13/TTL≤0.17.

Preferably, the total optical length TTL of the imaging optical lens is less than or equal to 10.46 mm.

Preferably, the total optical length TTL of the imaging optical lens is less than or equal to 9.99 mm.

Preferably, the aperture F number of the imaging optical lens is less than or equal to 2.43.

Preferably, the aperture F number of the imaging optical lens is less than or equal to 2.39.

The beneficial effects of the present application are: the imaging optical lens according to the present application has excellent optical characteristics, is ultra-thin, wide-angle and fully compensated for chromatic aberration, and is especially suitable for mobile phone camera lenses composed of high-pixel CCD, CMOS and other imaging elements. Components and WEB camera lens.

Description of the drawings

FIG. 1 is a schematic diagram of the structure of an imaging optical lens according to a first embodiment of the present application;

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

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

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

5 is a schematic diagram of the structure of an imaging optical lens according to a second embodiment of the present application;

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

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

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

FIG. 9 is a schematic diagram of the structure of an imaging optical lens according to a third embodiment of the present application;

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

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

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

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

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

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

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

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

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

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

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

FIG. 21 is a schematic structural diagram of an imaging optical lens according to a sixth embodiment of the present application;

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

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

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

Detailed ways

In order to make the purpose, technical solutions, and advantages of the present application clearer, the various embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, those of ordinary skill in the art can understand that in each embodiment of the present application, many technical details are proposed in order to enable readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solution claimed in this application can be realized.

(First embodiment)

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

The first lens L1 is made of plastic, the second lens L2 is made of plastic, the third lens L3 is made of plastic, the fourth lens L4 is made of plastic, the fifth lens L5 is made of plastic, the sixth lens L6 is made of plastic, and the seventh lens is made of plastic. The lens L7 is made of plastic.

The first lens L1 has a negative refractive power, the second lens L2 has a positive refractive power, the third lens L3 has a positive refractive power, and the fourth lens L4 has a negative refractive power.

The maximum angle of view of the imaging optical lens 10 is defined as FOV, which satisfies the relationship: 100.00°≤FOV≤135.00°. As a result, the field of view angle of the imaging optical lens 10 is specified, and within the range, ultra-wide-angle imaging can be realized and user experience can be improved.

The focal length of the overall imaging optical lens 10 is defined as f, and the focal length of the third lens L3 is defined as f3, which satisfies the relationship: 1.00≤f3/f≤8.00. Through the reasonable distribution of optical power, the system has better imaging quality and lower sensitivity.

The on-axis thickness of the first lens L1 is defined as d1, and the on-axis thickness of the third lens L3 is defined as d5, which satisfies the relationship: 1.55≤d1/d5≤3.00. As a result, the ratio of the on-axis thickness of the first lens L1 to the on-axis thickness of the third lens L3 is specified, which is beneficial to the development of the lens to a wider angle within the range of conditional expressions.

When the focal length of the imaging optical lens 10, the focal length of each lens, the on-axis distance from the image side of the relevant lens to the object side, and the on-axis thickness satisfy the above-mentioned relational expressions, the imaging optical lens 10 can be made to have high performance and satisfy Low TTL design requirements.

The object side surface of the first lens L1 is concave at the paraxial position.

The focal length of the first lens L1 is defined as f1, and the focal length of the overall imaging optical lens 10 is defined as f, which satisfies the relationship: -55.64≤f1/f≤-1.05. Thus, the ratio of the focal length of the first lens L1 to the total focal length of the system is specified. When within the specified range, the first lens L1 has an appropriate negative refractive power, which is beneficial to reduce system aberrations and at the same time is beneficial to the lens to super Thinning and wide-angle development. Preferably, it satisfies: -34.77≤f1/f≤-1.31.

Define the radius of curvature of the object side surface of the first lens L1 as R1, and the radius of curvature of the image side surface of the first lens L1 as R2, which satisfies the relationship: -30.47≤(R1+R2)/(R1-R2)≤1.02. Therefore, the shape of the first lens L1 can be reasonably controlled, so that the first lens L1 can effectively correct the spherical aberration of the system. Preferably, it satisfies: -19.04≤(R1+R2)/(R1-R2)≤0.81.

Define the on-axis thickness of the first lens L1 as d1, and the total optical length of the camera optical lens as TTL, which satisfies the relationship: 0.05≤d1/TTL≤0.34, which is conducive to achieving ultra-thinness. Preferably, it satisfies: 0.07≤d1/TTL≤0.27.

The object side surface of the second lens L2 is convex on the par axis, and the image side surface of the second lens L2 is concave on the par axis.

The focal length f2 of the second lens L2 is defined, and the focal length of the overall imaging optical lens 10 is f, which satisfies the relationship: 0.90≤f2/f≤250.53. By controlling the positive refractive power of the second lens L2 in a reasonable range, it is beneficial to correct the aberration of the optical system. Preferably, it satisfies: 1.44≤f2/f≤200.43.

It is defined that the curvature radius of the object side surface of the second lens L2 is R3, and the curvature radius of the image side surface of the second lens L2 is R4, which satisfies the relationship: -151.98≤(R3+R4)/(R3-R4)≤47.80. The shape of the second lens L2 is specified. When the lens is within the range, as the lens becomes ultra-thin and wide-angle, it is beneficial to correct the problem of axial chromatic aberration. Preferably, it satisfies: -94.99≤(R3+R4)/(R3-R4)≤38.24.

The on-axis thickness of the second lens L2 is defined as d3, and the total optical length of the camera optical lens is TTL, which satisfies the relationship: 0.02≤d3/TTL≤0.18, which is conducive to achieving ultra-thinness. Preferably, it satisfies: 0.03≤d3/TTL≤0.14.

The image side surface of the third lens L3 is convex on the par axis.

Define the curvature radius of the object side surface of the third lens L3 as R5, and the curvature radius of the image side surface of the third lens L3 as R6, which satisfies the relationship: -0.89≤(R5+R6)/(R5-R6)≤3.81, which is effective Controlling the shape of the third lens L3 facilitates the molding of the third lens L3. Within the specified range of the conditional formula, the degree of deflection of the light passing through the lens can be eased, and aberrations can be effectively reduced. Preferably, it satisfies: -0.56≤(R5+R6)/(R5-R6)≤3.05.

The on-axis thickness of the third lens L3 is defined as d5, and the total optical length of the camera optical lens is TTL, which satisfies the relationship: 0.02≤d5/TTL≤0.16, which is conducive to achieving ultra-thinness. Preferably, it satisfies: 0.03≤d5/TTL≤0.13.

The focal length f4 of the fourth lens L4 is defined, and the focal length of the overall imaging optical lens 10 is f, which satisfies the relationship: -10.08≤f4/f≤-1.01. By controlling the optical power of the fourth lens L4 in a reasonable range, the system has better imaging quality and lower sensitivity. Preferably, it satisfies: -6.30≤f4/f≤-1.26.

It is defined that the radius of curvature of the object side surface of the fourth lens L4 is R7, and the radius of curvature of the image side surface of the fourth lens L4 is R8, which satisfies the relationship: -4.66≤(R7+R8)/(R7-R8)≤4.69. The shape of the fourth lens L4 is specified. When it is within the range, with the development of ultra-thin and wide-angle, it is beneficial to correct the aberration of the off-axis angle of view. Preferably, it satisfies: -2.91≤(R7+R8)/(R7-R8)≤3.75.

The on-axis thickness of the fourth lens L4 is defined as d7, and the total optical length of the camera optical lens is TTL, which satisfies the relationship: 0.02≤d7/TTL≤0.16, which is conducive to achieving ultra-thinness. Preferably, it satisfies: 0.03≤d7/TTL≤0.13.

The image side surface of the fifth lens L5 is convex on the par axis.

The focal length of the fifth lens L5 is defined as f5, and the focal length of the overall imaging optical lens 10 is defined as f, which satisfies the relationship: -36.51≤f5/f≤3.25. The limitation of the fifth lens L5 can effectively make the light angle of the camera lens smooth and reduce the tolerance sensitivity. Preferably, it satisfies: -22.82≤f5/f≤2.60.

Define the radius of curvature of the object side surface of the fifth lens L5 as R9, and the radius of curvature of the image side surface of the fifth lens L5 as R10, which satisfies the relationship: -28.62≤(R9+R10)/(R9-R10)≤3.38. The shape of the fifth lens L5 is specified, and when it is within the range specified by the relational expression, with the development of ultra-thin and wide-angle, it is beneficial to correct the aberration of the off-axis angle of view. Preferably, it satisfies: -17.89≤(R9+R10)/(R9-R10)≤2.71.

The on-axis thickness of the fifth lens L5 is defined as d9, and the total optical length of the camera optical lens is TTL, which satisfies the relationship: 0.02≤d9/TTL≤0.23, which is conducive to achieving ultra-thinness. Preferably, it satisfies: 0.04≤d9/TTL≤0.18.

The image side surface of the sixth lens L6 is concave on the paraxial axis.

The focal length of the sixth lens L6 is defined as f6, and the focal length of the overall imaging optical lens 10 is defined as f, which satisfies the relationship: -18.73≤f6/f≤2.28. Through the reasonable distribution of optical power, the system has better imaging quality and lower sensitivity. Preferably, it satisfies: -11.71≤f6/f≤1.82.

Define the radius of curvature of the object side surface of the sixth lens L6 as R11, and the radius of curvature of the image side surface of the sixth lens L6 as R12, satisfying the relationship: -6.71≤(R11+R12)/(R11-R12)≤10.57. The shape of the sixth lens L6 is specified, and when it is within the range specified by the relational expression, with the development of ultra-thin and wide-angle, it is beneficial to correct the aberration of the off-axis angle of view. Preferably, it satisfies: -4.19≤(R11+R12)/(R11-R12)≤8.46.

The on-axis thickness of the sixth lens L6 is defined as d11, and the total optical length of the camera optical lens is TTL, which satisfies the relationship: 0.02≤d11/TTL≤0.13, which is conducive to achieving ultra-thinness. Preferably, it satisfies: 0.03≤d11/TTL≤0.10.

The image side surface of the seventh lens L7 is concave on the paraxial axis.

The focal length of the seventh lens L7 is defined as f7, and the focal length of the overall imaging optical lens 10 is defined as f, which satisfies the relationship: -2.91≤f7/f≤18.91. Through the reasonable distribution of optical power, the system has better imaging quality and lower sensitivity. Preferably, it satisfies: -1.82≤f7/f≤15.12.

The curvature radius of the object side surface of the seventh lens L7 is defined as R13, and the curvature radius of the image side surface of the seventh lens L7 is defined as R14, which satisfies the relationship: -52.20≤(R13+R14)/(R13-R14)≤1.52. The shape of the seventh lens L7 is specified, and when it is within the range specified by the relational expression, with the development of ultra-thin and wide-angle, it is beneficial to correct the aberration of the off-axis angle of view. Preferably, it satisfies: -32.63≤(R13+R14)/(R13-R14)≤1.21.

The on-axis thickness of the seventh lens L7 is defined as d13, and the total optical length of the imaging optical lens is TTL, which satisfies the relationship: 0.04≤d13/TTL≤0.21, which is conducive to achieving ultra-thinness. Preferably, it satisfies: 0.06≤d13/TTL≤0.17.

In this embodiment, the total optical length TTL of the imaging optical lens 10 is less than or equal to 10.46 mm, which is beneficial to realize ultra-thinness. Preferably, the total optical length TTL is less than or equal to 9.99 mm.

In this embodiment, the aperture F number of the imaging optical lens 10 is less than or equal to 2.43, a large aperture, and good imaging performance. Preferably, the aperture F number of the imaging optical lens 10 is less than or equal to 2.39.

With such a design, the overall optical length TTL of the overall imaging optical lens 10 can be shortened as much as possible, and the characteristics of miniaturization can be maintained.

The imaging optical lens 10 of the present application will be described below with an example. The symbols described in each example are as follows. The unit of the focal length, the distance on the axis, the radius of curvature, the thickness on the axis, the position of the inflection point, and the position of the stagnation point are millimeters (mm).

TTL: Total optical length (the on-axis distance from the object side of the first lens L1 to the imaging surface), in millimeters (mm).

Preferably, the object side and/or the image side of the lens may also be provided with inflection points and/or stagnation points to meet the requirements of high-quality imaging. The specific implementation schemes are as follows.

Table 1 and Table 2 show the design data of the imaging optical lens 10 of the first embodiment of the present application.

【Table 1】

Among them, the meaning of each symbol is as follows.

S1: aperture;

R: The radius of curvature of the optical surface, and the radius of curvature of the center of the lens;

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

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

R3: the radius of curvature of the object side surface of the second lens L2;

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

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

R6: the radius of curvature of the image side surface of the third lens L3;

R7: the radius of curvature of the object side of the fourth lens L4;

R8: the radius of curvature of the image side surface of the fourth lens L4;

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

R10: the radius of curvature of the image side surface of the fifth lens L5;

R11: the radius of curvature of the object side surface of the sixth lens L6;

R12: the radius of curvature of the image side surface of the sixth lens L6;

R13: the radius of curvature of the object side surface of the seventh lens L7;

R14: the radius of curvature of the image side surface of the seventh lens L7;

R15: the radius of curvature of the object side of the optical filter GF;

R16: the radius of curvature of the image side surface of the optical filter GF;

d: the on-axis thickness of the lens and the on-axis distance between the lenses;

d0: the on-axis distance from the aperture S1 to the object side of the first lens L1;

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

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

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

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

d5: the on-axis thickness of the third lens L3;

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

d7: the on-axis thickness of the fourth lens L4;

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

d9: the on-axis thickness of the fifth lens L5;

d10: the on-axis distance from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6;

d11: the on-axis thickness of the sixth lens L6;

d12: the on-axis distance from the image side surface of the sixth lens L6 to the object side surface of the seventh lens L7;

d13: the on-axis thickness of the seventh lens L7;

d14: the on-axis distance from the image side surface of the seventh lens L7 to the object side surface of the optical filter GF;

d15: the axial thickness of the optical filter GF;

d16: the 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: the refractive index of the d-line of the first lens L1;

nd2: the refractive index of the d-line of the second lens L2;

nd3: the refractive index of the d-line of the third lens L3;

nd4: the refractive index of the d-line of the fourth lens L4;

nd5: the refractive index of the d-line of the fifth lens L5;

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

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

ndg: the refractive index of the 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;

vg: Abbe number of optical filter GF.

Table 2 shows the aspheric surface data of each lens in the imaging optical lens 10 of the first embodiment of the present application.

【Table 2】

Among them, k is the conic coefficient, and A4, A6, A8, A10, A12, A14, A16, A18, A20 are aspherical coefficients.

IH: Image height

y=(x ² /R)/[1+{1-(k+1)(x ² /R ² )}1/2]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰ +A12x ¹² +A14x ¹⁴ +A16x ¹⁶ +A18x ¹⁸ +A20x ²⁰ . (1)

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

Table 3 and Table 4 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 10 provided by the first embodiment of the present application. Among them, P1R1 and P1R2 represent the object side and image side of the first lens L1 respectively, P2R1 and P2R2 represent the object side and image side of the second lens L2 respectively, and P3R1 and P3R2 represent the object side and image side of the third lens L3 respectively. P4R1, P4R2 represent the object side and image side of the fourth lens L4, P5R1, P5R2 represent the object side and image side of the fifth lens L5, P6R1, P6R2 represent the object side and image side of the sixth lens L6, P7R1 P7R2 represents the object side and image side of the seventh lens L7, respectively. The data corresponding to the “reflection point position” column is the vertical distance from the reflex point set on the surface of each lens to the optical axis of the imaging optical lens 10. The data corresponding to the “stationary point position” column is the vertical distance from the stationary point set on the surface of each lens to the optical axis of the imaging optical lens 10.

【table 3】

To	Number of recurve points	Recurve point position 1	Recurve point position 2	Recurve point position 3	Recurve point position 4
P1R1	1	0.755	To	To	To
P1R2	1	0.295	To	To	To
P2R1	1	0.725	To	To	To
P2R2	2	0.625	0.995	To	To
P3R1	0	To	To	To	To
P3R2	1	0.795	To	To	To
P4R1	1	0.905	To	To	To
P4R2	3	0.165	1.005	1.125	To
P5R1	4	0.185	0.435	0.645	0.925
P5R2	1	1.075	To	To	To
P6R1	1	0.445	To	To	To
P6R2	3	0.565	1.435	1.705	To
P7R1	3	0.035	1.225	1.895	To
P7R2	2	0.515	2.385	To	To

【Table 4】

To	Number of stationary points		Stagnation position 1	Stagnation position 2
P1R1	1	1.515	To
P1R2	1	0.395	To
P2R1	1	1.125	To
P2R2	0	To	To
P3R1	0	To	To
P3R2	0	To	To

P4R1	0	To	To
P4R2	1	0.305	To
P5R1	2	0.765	1.005
P5R2	1	1.255	To
P6R1	1	0.695	To
P6R2	1	1.015	To
P7R1	1	0.055	To
P7R2	1	0.985	To

2 and 3 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 650 nm, 555 nm, and 470 nm pass through the imaging optical lens 10 of the first embodiment. FIG. 4 shows a schematic diagram of field curvature and distortion of light with a wavelength of 555 nm after passing through the imaging optical lens 10 of the first embodiment. The curve of field S in Fig. 4 is the curve of field in the sagittal direction, and T is the curve of field in the meridional direction.

The following Table 25 shows the values corresponding to various values in each of Examples 1, 2, 3, 4, 5, and 6 and the parameters specified in the conditional expressions.

As shown in Table 25, the first embodiment satisfies various conditional expressions.

In this embodiment, the entrance pupil diameter of the imaging optical lens 10 is 1.684 mm, the full field of view image height is 3.248 mm, and the maximum field of view is 100.21°. The imaging optical lens 10 has a wide-angle and ultra-thin angle, and its axis, The off-axis chromatic aberration is fully corrected and has excellent optical characteristics.

(Second embodiment)

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

Table 5 and Table 6 show the design data of the imaging optical lens 20 of the second embodiment of the present application.

【table 5】

Table 6 shows the aspheric surface data of each lens in the imaging optical lens 20 of the second embodiment of the present application.

【Table 6】

Table 7 and Table 8 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 20 of the second embodiment of the present application.

【Table 7】

To	Number of recurve points	Recurve point position 1	Recurve point position 2	Recurve point position 3
P1R1	2	0.605	3.505	To
P1R2	1	1.795	To	To
P2R1	0	To	To	To
P2R2	0	To	To	To
P3R1	0	To	To	To
P3R2	0	To	To	To
P4R1	1	0.685	To	To
P4R2	2	0.165	0.665	To
P5R1	1	0.805	To	To
P5R2	3	0.645	0.995	1.105
P6R1	2	0.295	1.135	To
P6R2	1	0.545	To	To
P7R1	2	0.655	1.885	To
P7R2	1	0.575	To	To

【Table 8】

To	Number of stationary points		Stagnation position 1	Stagnation position 2
P1R1	1	1.165	To
P1R2	0	To	To
P2R1	0	To	To
P2R2	0	To	To
P3R1	0	To	To
P3R2	0	To	To
P4R1	0	To	To
P4R2	2	0.375	0.785
P5R1	1	0.905	To
P5R2	2	0.905	1.055
P6R1	1	0.505	To

P6R2	1	0.945	To
P7R1	0	To	To
P7R2	1	1.255	To

FIG. 5 shows the imaging optical lens 20 according to the second embodiment of the application.

6 and 7 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 650 nm, 555 nm, and 470 nm pass through the imaging optical lens 20 of the second embodiment. FIG. 8 shows a schematic diagram of field curvature and distortion of light with a wavelength of 555 nm after passing through the imaging optical lens 20 of the second embodiment.

As shown in Table 25, the second embodiment satisfies various conditional expressions.

In this embodiment, the entrance pupil diameter of the imaging optical lens 20 is 0.829mm, the full-field image height is 3.248mm, and the maximum field of view is 123.24°. The imaging optical lens 20 has a wide-angle and ultra-thin angle, and its axis, The off-axis chromatic aberration is fully corrected and has excellent optical characteristics.

(Third embodiment)

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

Table 9 and Table 10 show the design data of the imaging optical lens 30 provided by the third embodiment of the present application.

【Table 9】

Table 10 shows the aspheric surface data of each lens in the imaging optical lens 30 of the third embodiment of the present application.

【Table 10】

Table 11 and Table 12 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 30 of the third embodiment of the present application.

【Table 11】

To	Number of recurve points	Recurve point position 1	Recurve point position 2	Recurve point position 3
P1R1	3	0.645	3.235	4.565
P1R2	2	1.765	2.175	To
P2R1	0	To	To	To
P2R2	0	To	To	To
P3R1	0	To	To	To
P3R2	0	To	To	To
P4R1	0	To	To	To
P4R2	1	0.865	To	To
P5R1	0	To	To	To
P5R2	1	0.935	To	To
P6R1	2	1.025	1.115	To
P6R2	1	0.555	To	To
P7R1	2	0.725	2.225	To
P7R2	2	0.545	2.655	To

【Table 12】

To	Number of stationary points		Stagnation position 1
P1R1	1	1.235
P1R2	0	To
P2R1	0	To
P2R2	0	To
P3R1	0	To
P3R2	0	To
P4R1	0	To
P4R2	0	To
P5R1	0	To
P5R2	0	To
P6R1	0	To
P6R2	1	1.065
P7R1	1	1.915
P7R2	1	1.725

FIG. 9 shows an imaging optical lens 30 according to the third embodiment of the application.

10 and 11 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 650 nm, 555 nm, and 470 nm pass through the imaging optical lens 30 of the third embodiment. FIG. 12 shows a schematic diagram of field curvature and distortion of light with a wavelength of 555 nm after passing through the imaging optical lens 30 of the third embodiment.

As shown in Table 25, the third embodiment satisfies various conditional expressions.

In this embodiment, the entrance pupil diameter of the imaging optical lens 30 is 0.672 mm, the full-field image height is 3.248 mm, and the maximum field angle is 134.78°. The imaging optical lens 30 is wide-angled and ultra-thin. The off-axis chromatic aberration is fully corrected and has excellent optical characteristics.

(Fourth embodiment)

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

Table 13 and Table 14 show the design data of the imaging optical lens 40 provided by the fourth embodiment of the present application.

【Table 13】

Table 14 shows the aspheric surface data of each lens in the imaging optical lens 40 of the fourth embodiment of the present application.

【Table 14】

Table 15 and Table 16 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 40 of the fourth embodiment of the present application.

【Table 15】

To	Number of recurve points	Recurve point position 1	Recurve point position 2	Recurve point position 3
P1R1	1	0.615	To	To
P1R2	1	0.465	To	To
P2R1	1	1.015	To	To
P2R2	1	0.875	To	To
P3R1	0	To	To	To
P3R2	0	To	To	To
P4R1	1	0.205	To	To
P4R2	1	0.375	To	To
P5R1	0	To	To	To
P5R2	1	1.095	To	To
P6R1	3	0.445	1.185	1.335
P6R2	2	0.675	1.085	To
P7R1	1	1.535	To	To
P7R2	2	0.545	2.375	To

【Table 16】

To	Number of stationary points		Stagnation position 1
P1R1	1	1.285
P1R2	1	0.885
P2R1	0	To
P2R2	0	To
P3R1	0	To
P3R2	0	To
P4R1	1	0.375
P4R2	1	0.725
P5R1	0	To
P5R2	0	To
P6R1	1	0.745
P6R2	0	To
P7R1	0	To
P7R2	1	1.095

FIG. 13 shows an imaging optical lens 40 according to the fourth embodiment of this application.

14 and 15 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 650 nm, 555 nm, and 470 nm pass through the imaging optical lens 40 of the fourth embodiment. FIG. 16 shows a schematic diagram of field curvature and distortion of light with a wavelength of 555 nm after passing through the imaging optical lens 40 of the fourth embodiment.

As shown in Table 25, the fourth embodiment satisfies various conditional expressions.

In this embodiment, the entrance pupil diameter of the imaging optical lens 40 is 1.641mm, the full field of view image height is 3.248mm, and the maximum field of view is 100.21°. The imaging optical lens 40 has a wide-angle and ultra-thin angle. The off-axis chromatic aberration is fully corrected 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 of the first embodiment, and only the differences are listed below.

Table 17 and Table 18 show the design data of the imaging optical lens 50 provided by the fifth embodiment of the present application.

【Table 17】

Table 18 shows the aspheric surface data of each lens in the imaging optical lens 50 of the fifth embodiment of the present application.

【Table 18】

Table 19 and Table 20 show the inflection point and stagnation point design data of each lens in the imaging optical lens 50 of the fifth embodiment of the present application.

【Table 19】

To	Number of recurve points	Recurve point position 1	Recurve point position 2	Recurve point position 3	Recurve point position 4	Recurve point position 5
P1R1	1	0.805	To	To	To	To
P1R2	1	0.465	To	To	To	To
P2R1	1	0.705	To	To	To	To

P2R2	1	0.475	To	To	To	To
P3R1	1	0.575	To	To	To	To
P3R2	0	To	To	To	To	To
P4R1	1	0.815	To	To	To	To
P4R2	3	0.135	0.225	0.915	To	To
P5R1	5	0.205	0.265	0.615	0.675	0.935
P5R2	3	0.645	0.835	0.975	To	To
P6R1	3	0.325	1.245	1.455	To	To
P6R2	3	0.535	1.495	1.725	To	To
P7R1	2	1.365	1.985	To	To	To
P7R2	2	0.575	2.375	To	To	To

【Table 20】

To	Number of stationary points		Stagnation position 1
P1R1	1	1.635
P1R2	1	0.825
P2R1	1	1.025
P2R2	1	0.785
P3R1	1	0.745
P3R2	0	To
P4R1	0	To
P4R2	1	1.105
P5R1	1	1.115
P5R2	1	1.175
P6R1	1	0.825
P6R2	1	1.085
P7R1	0	To
P7R2	1	1.155

FIG. 17 shows an imaging optical lens 50 according to the fifth embodiment of this application.

18 and 19 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 650 nm, 555 nm, and 470 nm pass through the imaging optical lens 50 of the fifth embodiment. FIG. 20 shows a schematic diagram of field curvature and distortion after light with a wavelength of 555 nm passes through the imaging optical lens 50 of the fifth embodiment.

As shown in Table 25, the fifth embodiment satisfies various conditional expressions.

In this embodiment, the entrance pupil diameter of the imaging optical lens 50 is 1.466 mm, the full-field image height is 3.248 mm, and the maximum field angle is 100.21°. The imaging optical lens 50 has a wide-angle and ultra-thin angle, and its axis The off-axis chromatic aberration is fully corrected and has excellent optical characteristics.

(Sixth Embodiment)

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

Table 21 and Table 22 show the design data of the imaging optical lens 60 provided by the sixth embodiment of the present application.

【Table 21】

Table 22 shows the aspheric surface data of each lens in the imaging optical lens 60 of the sixth embodiment of the present application.

【Table 22】

Table 23 and Table 24 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 60 of the sixth embodiment of the present application.

【Table 23】

To	Number of recurve points	Recurve point position 1	Recurve point position 2
P1R1	1	0.515	To
P1R2	2	0.285	1.235
P2R1	1	0.805	To
P2R2	1	0.715	To
P3R1	0	To	To
P3R2	0	To	To
P4R1	1	0.275	To
P4R2	1	0.415	To
P5R1	2	0.665	0.785
P5R2	1	1.095	To
P6R1	2	0.475	1.205

P6R2	0	To	To
P7R1	1	1.515	To
P7R2	2	0.525	2.315

【Table 24】

To	Number of stationary points		Stagnation position 1	Stagnation position 2
P1R1	1	1.015	To
P1R2	1	0.515	To
P2R1	0	To	To
P2R2	0	To	To
P3R1	0	To	To
P3R2	0	To	To
P4R1	1	0.495	To
P4R2	1	0.775	To
P5R1	0	To	To
P5R2	0	To	To
P6R1	2	0.855	1.425
P6R2	0	To	To
P7R1	0	To	To
P7R2	1	1.055	To

FIG. 21 shows an imaging optical lens 60 according to the sixth embodiment of this application.

22 and 23 respectively show schematic diagrams of axial aberration and chromatic aberration of magnification after light having wavelengths of 650 nm, 555 nm, and 470 nm pass through the imaging optical lens 60 of the sixth embodiment. FIG. 24 shows a schematic diagram of field curvature and distortion of light with a wavelength of 555 nm after passing through the imaging optical lens 60 of the sixth embodiment.

As shown in Table 25, the sixth embodiment satisfies various conditional expressions.

In this embodiment, the entrance pupil diameter of the imaging optical lens 60 is 1.503 mm, the full field of view image height is 3.248 mm, and the maximum field of view is 100.20°. The imaging optical lens 60 has a wide-angle and ultra-thin angle. The off-axis chromatic aberration is fully corrected and has excellent optical characteristics.

【Table 25】

Parameters and conditions	Example 1	Example 2	Example 3	Example 4	Example 5	Example 6
FOV	100.21	123.24	134.78	100.21	100.21	100.20
f3/f	1.01	1.11	1.13	8.00	1.01	4.00
d1/d5	3.00	2.00	1.56	2.20	1.60	2.20
f	3.195	1.946	1.588	3.547	3.395	3.517
f1	-9.124	-3.059	-2.881	-98.688	-17.687	-20.006
f2	20.000	7.403	17.439	272.296	6.112	587.434
f3	3.211	2.162	1.788	28.358	3.411	14.068
f4	-5.716	-3.573	-8.005	-9.341	-5.137	-9.971
f5	2.388	4.220	3.352	2.217	-61.968	2.268
f6	-6.063	-18.219	-2.550	-14.817	5.159	-14.074
f7	-4.650	24.522	14.679	-4.294	-3.707	-4.250
f12	-15.563	-6.087	-3.410	-140.936	8.073	-19.372
Fno	1.90	2.35	2.36	2.16	2.32	2.34

Among them, f12 is the combined focal length of the first lens L1 and the second lens L2, and Fno is the aperture F number of the imaging optical lens.

Those of ordinary skill in the art can understand that the above-mentioned embodiments are specific embodiments for realizing the application, and in actual applications, various changes can be made to them in form and details without departing from the spirit and spirit of the application. range.

Claims (19)

1. An imaging optical lens, characterized in that, from the object side to the image side, the imaging optical lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and Seventh lens

   The first lens has a negative refractive power, the second lens has a positive refractive power, the third lens has a positive refractive power, and the fourth lens has a negative refractive power;

   The maximum field angle of the imaging optical lens is FOV, the focal length of the imaging optical lens is f, the focal length of the third lens is f3, the axial thickness of the first lens is d1, and the third lens The on-axis thickness of is d5, which satisfies the following relationship:

   100.00°≤FOV≤135.00°;

   1.00≤f3/f≤8.00;

   1.55≤d1/d5≤3.00.
2. The imaging optical lens according to claim 1, wherein the object side surface of the first lens is concave in the paraxial;

   The focal length of the first lens is f1, the radius of curvature of the object side of the first lens is R1, the radius of curvature of the image side of the first lens is R2, the total optical length of the imaging optical lens is TTL, and Satisfy the following relations:

   -55.64≤f1/f≤-1.05;

   -30.47≤(R1+R2)/(R1-R2)≤1.02;

   0.05≤d1/TTL≤0.34.
3. 4. The imaging optical lens of claim 2, wherein the imaging optical lens satisfies the following relationship:

   -34.77≤f1/f≤-1.31;

   -19.04≤(R1+R2)/(R1-R2)≤0.81;

   0.07≤d1/TTL≤0.27.
4. 4. The imaging optical lens of claim 1, wherein the object side surface of the second lens is convex on the par axis, and the image side surface of the second lens is concave on the par axis;

   The focal length of the second lens is f2, the radius of curvature of the object side of the second lens is R3, the radius of curvature of the image side of the second lens is R4, and the axial thickness of the second lens is d3, The total optical length of the camera optical lens is TTL, and satisfies the following relationship:

   0.90≤f2/f≤250.53;

   -151.98≤(R3+R4)/(R3-R4)≤47.80;

   0.02≤d3/TTL≤0.18.
5. 4. The imaging optical lens of claim 4, wherein the imaging optical lens satisfies the following relationship:

   1.44≤f2/f≤200.43;

   -94.99≤(R3+R4)/(R3-R4)≤38.24;

   0.03≤d3/TTL≤0.14.
6. The imaging optical lens of claim 1, wherein the image side surface of the third lens is convex in the paraxial;

   The curvature radius of the object side surface of the third lens is R5, the curvature radius of the image side surface of the third lens is R6, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied:

   -0.89≤(R5+R6)/(R5-R6)≤3.81;

   0.02≤d5/TTL≤0.16.
7. 7. The imaging optical lens of claim 6, wherein the imaging optical lens satisfies the following relationship:

   -0.56≤(R5+R6)/(R5-R6)≤3.05;

   0.03≤d5/TTL≤0.13.
8. The imaging optical lens of claim 1, wherein the focal length of the fourth lens is f4, the radius of curvature of the object side of the fourth lens is R7, and the radius of curvature of the image side of the fourth lens is R7. Is R8, the axial thickness of the fourth lens is d7, the total optical length of the imaging optical lens is TTL, and the following relationship is satisfied:

   -10.08≤f4/f≤-1.01;

   -4.66≤(R7+R8)/(R7-R8)≤4.69;

   0.02≤d7/TTL≤0.16.
9. 8. The imaging optical lens of claim 8, wherein the imaging optical lens satisfies the following relationship:

   -6.30≤f4/f≤-1.26;

   -2.91≤(R7+R8)/(R7-R8)≤3.75;

   0.03≤d7/TTL≤0.13.
10. The imaging optical lens of claim 1, wherein the image side surface of the fifth lens is convex in the paraxial;

    The focal length of the fifth lens is f5, the radius of curvature of the object side of the fifth lens is R9, the radius of curvature of the image side of the fifth lens is R10, and the axial thickness of the fifth lens is d9, The total optical length of the camera optical lens is TTL, and satisfies the following relationship:

    -36.51≤f5/f≤3.25;

    -28.62≤(R9+R10)/(R9-R10)≤3.38;

    0.02≤d9/TTL≤0.23.
11. 10. The imaging optical lens of claim 10, wherein the imaging optical lens satisfies the following relationship:

    -22.82≤f5/f≤2.60;

    -17.89≤(R9+R10)/(R9-R10)≤2.71;

    0.04≤d9/TTL≤0.18.
12. The imaging optical lens of claim 1, wherein the image side surface of the sixth lens is concave in the paraxial;

    The focal length of the sixth lens is f6, the radius of curvature of the object side of the sixth lens is R11, the radius of curvature of the image side of the sixth lens is R12, and the axial thickness of the sixth lens is d11, The total optical length of the camera optical lens is TTL, and satisfies the following relationship:

    -18.73≤f6/f≤2.28;

    -6.71≤(R11+R12)/(R11-R12)≤10.57;

    0.02≤d11/TTL≤0.13.
13. The imaging optical lens of claim 12, wherein the imaging optical lens satisfies the following relationship:

    -11.71≤f6/f≤1.82;

    -4.19≤(R11+R12)/(R11-R12)≤8.46;

    0.03≤d11/TTL≤0.10.
14. The imaging optical lens of claim 1, wherein the image side surface of the seventh lens is concave in the paraxial;

    The focal length of the seventh lens is f7, the radius of curvature of the object side of the seventh lens is R13, the radius of curvature of the image side of the seventh lens is R14, and the axial thickness of the seventh lens is d13, The total optical length of the camera optical lens is TTL, and satisfies the following relationship:

    -2.91≤f7/f≤18.91;

    -52.20≤(R13+R14)/(R13-R14)≤1.52;

    0.04≤d13/TTL≤0.21.
15. The imaging optical lens of claim 14, wherein the imaging optical lens satisfies the following relational expression:

    -1.82≤f7/f≤15.12;

    -32.63≤(R13+R14)/(R13-R14)≤1.21;

    0.06≤d13/TTL≤0.17.
16. The imaging optical lens of claim 1, wherein the total optical length TTL of the imaging optical lens is less than or equal to 10.46 mm.
17. The imaging optical lens of claim 16, wherein the total optical length TTL of the imaging optical lens is less than or equal to 9.99 mm.
18. The imaging optical lens of claim 1, wherein the aperture F number of the imaging optical lens is less than or equal to 2.43.
19. 18. The imaging optical lens of claim 18, wherein the aperture F number of the imaging optical lens is less than or equal to 2.39.

Images