WO2022110208A1 - Optical lens, camera module and electronic device - Google Patents

Abstract

An optical lens (10) sequentially comprises, from an object side to an image side, a substrate (L6), a first lens (L1), a second lens (L2), a diaphragm, a third lens (L3) and a fourth lens (L4). The substrate (L6) comprises a display module. The first lens (L1) has negative refractive power. The second lens (L2) has positive refractive power. The third lens (L3) has positive refractive power. The third lens (L3) has an object-side surface (S5) being convex in a paraxial region thereof, and an image-side surface (S6) being convex in a paraxial region thereof. The fourth lens (L4) has positive refractive power. The optical lens (10) satisfies the following relationship: 0.7 < CT1/CT2 < 1.0, wherein CT1 is the on-axis thickness of the first lens (L1), and CT2 is the on-axis thickness of the second lens (L2).

Description

Optical lens, camera module and electronic device technical field

The invention relates to optical imaging technology, in particular to an optical lens, a camera module and an electronic device.

Background technique

With the rapid development of science and technology, fingerprint recognition technology is gradually applied to portable electronic devices such as smartphones. Optical under-screen fingerprint technology is one of the fingerprint recognition technologies. It has strong anti-interference, good stability and low cost. Therefore, the fingerprint technology under the optical screen has been widely used.

However, the existing fingerprint identification module has a large volume and a long total length, which is not conducive to being installed on an ultra-thin mobile electronic device, and cannot meet the requirements of high-end products.

SUMMARY OF THE INVENTION

In view of this, embodiments of the present invention provide an optical lens, a camera module, and an electronic device.

In the optical lens of the embodiment of the present invention, the optical lens includes a substrate, a first lens, a second lens, a diaphragm, a third lens and a fourth lens in order from the object side to the image side, the substrate includes a display module, the first lens The lens has a negative refractive power, the second lens has a positive refractive power, the third lens has a positive refractive power, the object side of the third lens is a convex surface near the optical axis, and the image side of the third lens is in the vicinity of the optical axis. The vicinity of the optical axis is a convex surface, the fourth lens has a positive refractive power, and the optical lens satisfies the following relationship: 0.7<CT1/CT2<1.0, where CT1 is the thickness of the first lens on the optical axis, CT2 is the thickness of the second lens on the optical axis.

The ratio of the thickness of the first lens on the optical axis to the thickness of the second lens on the optical axis of the optical lens according to the embodiment of the present invention is between 0.7 and 1.0, so that the thickness of the lens of the optical lens on the optical axis can be compressed, In order to reduce the volume of the optical lens, it is beneficial to the miniaturized production of the optical lens, so that the optical lens can meet the needs of high-end products.

In some embodiments, the object side of the first lens is convex near the optical axis, and the image side of the first lens is concave near the optical axis;

The object side surface of the fourth lens at the optical axis is a convex surface near the optical axis.

Through a reasonable lens configuration, a larger field of view and improved resolution can be achieved, thereby improving the quality of imaging and making it easier for users to use.

In certain embodiments, the optical lens satisfies the following relationship:

NA/ImgH>4;

Wherein, NA is half of the maximum height of the object photographed by the optical lens, and ImgH is the maximum imaging circle radius of the optical lens.

Under the condition that the above relationship is satisfied, the optical lens has a larger magnification, so that the information of the image can be obtained more clearly, and the image is more complete.

In certain embodiments, the optical lens satisfies the following relationship:

0.6mm<CL*f/P<2.4mm;

Wherein, CL is the thickness of the substrate on the optical axis, f is the effective focal length of the optical lens, and P is the distance between the substrate and the first lens on the optical axis.

Under the condition that the above-mentioned relational expression is satisfied, the substrate has a higher strength, and the service life of the optical lens is improved.

In certain embodiments, the optical lens satisfies the following relationship:

|(R5+R6)/(R5-R6)|<0.7;

Wherein, R5 is the radius of curvature of the object side of the third lens at the optical axis, and R6 is the radius of curvature of the image side of the third lens at the optical axis.

Under the condition that the above relationship is satisfied, the surface of the third lens can have an appropriate curvature to control the angle of incidence of light, and with the setting of the fourth lens, the image-side end of the optical lens can have a strong refractive power, which does not prevent the It is necessary to add other structures to improve the refractive power of the image-side end of the optical lens, thereby reducing the volume of the optical lens and facilitating the miniaturized design of the optical lens.

In certain embodiments, the optical lens satisfies the following relationship:

-0.9<f234/f1<-0.6;

Wherein, f234 is the combined focal length of the second lens, the third lens, and the fourth lens, and f1 is the effective focal length of the first lens.

When the above relationship is satisfied, it is beneficial to widen the angle of the optical lens, so that more light enters the optical lens, and the imaging quality of the optical lens is improved.

In certain embodiments, the optical lens satisfies the following relationship:

SAG1/R1<0.66;

Wherein, SAG1 is the sag at the maximum effective radius of the object side of the first lens, and R1 is the radius of curvature of the object side of the first lens at the optical axis.

When the above relational expression is satisfied, it is beneficial to widen the angle of the optical lens and improve the imaging quality of the optical lens.

In certain embodiments, the optical lens satisfies the following relationship:

|f4/R8|<1.15;

Wherein, f4 is the effective focal length of the fourth lens, and R8 is the radius of curvature of the image side of the fourth lens at the optical axis.

When the above relationship is satisfied, the refractive power distribution of the imaging end of the optical lens can be balanced, the back focal length can be shortened, the imaging can be ensured in a short space, and the imaging quality of the optical lens can be improved, which is beneficial to the use of the user.

In certain embodiments, the optical lens satisfies the following relationship:

1.3<TTL/ImgH*f<2.7;

Wherein, TTL is the distance from the object side of the first lens to the imaging surface of the optical lens on the optical axis, and ImgH is the maximum imaging circle radius of the optical lens.

When the above-mentioned relational expression is satisfied, the overall length of the optical lens can be reduced, which contributes to the miniaturized production of the optical lens.

The camera module of the embodiment of the present invention includes the optical lens and the photosensitive element of any of the above-mentioned embodiments, and the photosensitive element is arranged on the image side of the optical lens.

The ratio of the thickness of the first lens on the optical axis to the thickness of the second lens on the optical axis of the camera module according to the embodiment of the present invention is between 0.7 and 1.0, so that the thickness of the lens of the optical lens on the optical axis can be compressed. , in order to reduce the volume of the optical lens, which is conducive to the miniaturized production of the optical lens, so that the optical lens can meet the needs of high-end products.

The electronic device according to the embodiment of the present invention includes a casing and the above-mentioned camera module, and the camera module is mounted on the casing.

The ratio of the thickness of the first lens on the optical axis to the thickness of the second lens on the optical axis of the electronic device according to the embodiment of the present invention is between 0.7 and 1.0, so that the thickness of the lens of the optical lens on the optical axis can be compressed, In order to reduce the volume of the optical lens, it is beneficial to the miniaturized production of the optical lens, so that the optical lens can meet the needs of high-end products.

Additional aspects and advantages of embodiments of the present invention will be set forth, in part, from the following description, and in part will become apparent from the following description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will be apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

1 is a schematic structural diagram of an optical lens according to Embodiment 1 of the present invention;

2A is a spherical aberration curve diagram (mm) of the optical lens according to the first embodiment of the present invention;

2B is an astigmatism curve diagram (mm) of the optical lens according to the first embodiment of the present invention;

2C is a distortion curve diagram (%) of the optical lens according to the first embodiment of the present invention;

3 is a schematic structural diagram of an optical lens according to Embodiment 2 of the present invention;

4A is a spherical aberration curve (mm) of the optical lens according to the second embodiment of the present invention;

4B is an astigmatism curve diagram (mm) of the optical lens according to the second embodiment of the present invention;

4C is a distortion curve diagram (%) of the optical lens according to the second embodiment of the present invention;

5 is a schematic structural diagram of an optical lens according to Embodiment 3 of the present invention;

6A is a spherical aberration curve diagram (mm) of the optical lens according to the third embodiment of the present invention;

6B is an astigmatism curve diagram (mm) of the optical lens according to Embodiment 3 of the present invention;

6C is a distortion curve diagram (%) of the optical lens according to the third embodiment of the present invention;

7 is a schematic structural diagram of an optical lens according to Embodiment 4 of the present invention;

8A is a spherical aberration curve diagram (mm) of the optical lens according to the fourth embodiment of the present invention;

8B is an astigmatism curve diagram (mm) of the optical lens according to the fourth embodiment of the present invention;

8C is a distortion curve diagram (%) of the optical lens according to the fourth embodiment of the present invention;

9 is a schematic structural diagram of an optical lens according to Embodiment 5 of the present invention;

10A is a spherical aberration curve (mm) of the optical lens according to the fifth embodiment of the present invention;

10B is an astigmatism curve diagram (mm) of the optical lens according to the fifth embodiment of the present invention;

10C is a distortion curve (%) of the optical lens according to the fifth embodiment of the present invention;

11 is a schematic structural diagram of an optical lens according to Embodiment 6 of the present invention;

12A is a spherical aberration curve (mm) of the optical lens according to the sixth embodiment of the present invention;

12B is an astigmatism curve diagram (mm) of the optical lens according to the sixth embodiment of the present invention;

12C is a distortion curve diagram (%) of the optical lens according to the sixth embodiment of the present invention;

13 is a schematic structural diagram of a camera module according to an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present invention, and should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc., or The positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features delimited with "first", "second" may expressly or implicitly include one or more of said features. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be a mechanical connection, an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relation. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present disclosure may repeat reference numerals and/or reference letters in different instances for the purpose of simplicity and clarity and not in itself indicative of a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Referring to FIG. 1 , the real-time optical lens 10 of the present invention includes, from the object side to the image side, a substrate L6, a first lens L1 with negative refractive power, a second lens L2 with positive refractive power, and a first lens with positive refractive power A triple lens L3, and a fourth lens L4 having a positive refractive power.

The substrate L6 includes a display module, the first lens L1 has an object side S1 and an image side S2, the object side S1 of the first lens L1 is convex near the optical axis, and the image side S2 of the first lens L1 is concave near the optical axis. The second lens L2 has an object side surface S3 and an image side surface S4. The third lens L3 has an object side S5 and an image side S6, the object side S5 of the third lens L3 is convex near the optical axis, and the image side S6 of the third lens L3 is convex near the optical axis. The fourth lens L4 has an object side surface S7 and an image side surface S8, and the object side surface S8 of the fourth lens L4 at the optical axis Z is a convex surface near the optical axis.

In the embodiment of the present invention, the optical lens 10 further includes a diaphragm. The diaphragm may be an aperture diaphragm or a field diaphragm. The embodiments of the present invention will be described by taking an example that the diaphragm is an aperture diaphragm. The diaphragm is arranged between the second lens L2 and the third lens L3. Of course, in other embodiments, the diaphragm can also be arranged at other positions. For example, in other embodiments, the diaphragm can be arranged in any lens. On the surface of the lens, or between any two lenses, or between the fourth lens L4 and the infrared filter L5, the specific position of the diaphragm can be set according to the actual situation, which is not limited here. The optical lens 10 can better control the amount of incoming light by setting a reasonable aperture position, thereby improving the imaging effect and improving the imaging quality of the optical lens 10 .

Further, in the embodiment of the present invention, through a reasonable lens configuration, a larger angle of view and improved resolution can be achieved, thereby improving the quality of imaging and facilitating use by users.

Further, the optical lens 10 satisfies the following relationship:

0.7<CT1/CT2<1.0;

Wherein, CT1 is the thickness of the first lens L1 on the optical axis, and CT2 is the thickness of the second lens L2 on the optical axis.

That is to say, CT1/CT2 can be any value in the interval (0.7, 1.0), for example, the value is 0.71, 0.72, 0.74, 0.75, 0.79, 0.82, 0.85, 0.89, 0.91, 0.92, 0.95, 0.96, 0.97 , 0.99, etc.

The ratio of the thickness of the first lens L1 on the optical axis to the thickness of the second lens L2 on the optical axis of the optical lens 10 according to the embodiment of the present invention is between 0.7 and 1.0, so that the lens of the optical lens 10 can be compressed on the optical axis. In order to reduce the volume of the optical lens 10, it is beneficial to the miniaturized production of the optical lens 10, so that the optical lens 10 can meet the requirements of high-end products.

In some embodiments, the optical lens 10 satisfies the following relationship:

FNO/tanω<0.88;

Wherein, FNO is the aperture number of the optical lens 10 , and ω is half of the maximum angle of view of the optical lens 10 .

That is to say, FNO/tanω can be any value less than 0.88, for example, the value is 0.87, 0.86, 0.85, 0.84, 0.7, 0.6, 0.5, 0.4, 0.3, 0.2, 0.1, -0.1, -0.5 and so on.

Under the condition that the above relationship is satisfied, the optical lens 10 has a large angle of view, so that information can be collected more comprehensively and accurately, and the large aperture is configured to increase the amount of incoming light, which can achieve sufficient recognition ability in the case of low light sources to adapt to various This environmental condition is favorable for the normal use of the optical lens 10 .

In some embodiments, the optical lens 10 satisfies the following relationship:

NA/ImgH>4;

Wherein, NA is half of the maximum height of the object photographed by the optical lens 10 , and ImgH is the maximum imaging circle radius of the optical lens 10 .

That is to say, NA/ImgH can be any value greater than 4, for example, the value is 4.2, 4.5, 4.8, 5, 6, 7, 8, 9, 10, 11, 12, 12.5, 12.8, 13.2, 13.4 , 13.6, 13.9, 14.5, 14.6, 14.9, 15, etc.

Under the condition that the above relationship is satisfied, the optical lens 10 has a larger magnification, so that the information of the image can be acquired more clearly, and the image is more complete.

In some embodiments, the optical lens 10 satisfies the following relationship:

0.6mm<CL*f/P<2.4mm;

CL is the thickness of the substrate L6 on the optical axis, f is the effective focal length of the optical lens 10 , and P is the distance between the substrate L6 and the first lens L1 on the optical axis Z.

That is to say, CL*f/P can be any value in the interval (0.6mm, 2.4mm), for example, the value can be 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, etc., in mm.

Under the condition that the above-mentioned relational expression is satisfied, the substrate L6 has a higher strength, which increases the service life of the optical lens 10 .

In some embodiments, the optical lens 10 satisfies the following relationship:

|(R5+R6)/(R5-R6)|<0.7;

Wherein, R5 is the radius of curvature of the object side of the third lens L3 at the optical axis, and R6 is the radius of curvature of the image side of the third lens L3 at the optical axis.

That is to say, |(R5+R6)/(R5-R6)| can be any value less than 0.7, for example, the value is 0.6, 0.55, 0.5, 0.45, 0.4, 0.3, 0.25, 0.2, 0.1, - 0.1, -0.5, etc.

Under the condition that the above relationship is satisfied, the surface of the third lens L3 can be made to have an appropriate curvature to control the angle of incident light, and with the setting of the fourth lens L4, the image side end of the optical lens 10 can have a strong refractive index Therefore, it is not necessary to add other structures to increase the refractive force of the image side end of the optical lens 10 , thereby reducing the volume of the optical lens 10 and facilitating the miniaturization design of the optical lens 10 .

In some embodiments, the optical lens 10 satisfies the following relationship:

-0.9<f234/f1<-0.6;

Wherein, f234 is the combined focal length of the second lens L2, the third lens L3, and the fourth lens L4, and f1 is the effective focal length of the first lens L1.

That is to say, f234/f1 can be any value in the interval (-0.9, -0.6), for example, the value is -0.88, -0.87, -0.85, -0.8, -0.79, -0.75, -0.72, -0.7 , -0.68, -0.65, -0.64, -0.62, -0.61, etc.

When the above relationship is satisfied, it is beneficial to widen the angle of the optical lens 10, so that more light enters the optical lens 10, and the imaging quality of the optical lens 10 is improved.

In some embodiments, the optical lens 10 satisfies the following relationship:

SAG1/R1<0.66;

Among them, SAG1 is the vector height at the maximum effective radius of the object side of the first lens L1, that is, the displacement parallel to the optical axis Z from the intersection of the object side of the first lens L1 and the optical axis to the maximum effective radius of the object side of the first lens L1 , R1 is the radius of curvature of the object side surface of the first lens L1 at the optical axis.

That is to say, SAG1/R1 can be any value less than 0.66, for example, the value is 0.65, 0.64, 0.62, 0.61, 0.59, 0.58, 0.57, 0.52, 0.49, 0.48, 0.45, 0.42, 0.35, 0.3, 0.2 , 0.1, -0.1, -0.2, etc.

When the above relational expression is satisfied, it is beneficial to widen the angle of the optical lens 10 and improve the imaging quality of the optical lens 10 .

In some embodiments, the optical lens 10 satisfies the following relationship:

|f4/R8|<1.15;

Wherein, f4 is the effective focal length of the fourth lens L4, and R8 is the radius of curvature of the image side surface of the fourth lens L4 at the optical axis.

That is to say, |f4/R8| can be any value less than 1.15, for example, the value is 1.1, 1.08, 1.05, 1.0, 0.9, 0.8, 0.7, 0.6, 0.5, 0.4, 0.3, 0.2, 0.1, - 0.1, -0.2, etc.

When the above relationship is satisfied, the refractive power distribution of the imaging end of the optical lens 10 can be balanced, the back focal length can be shortened, the imaging can be ensured in a short space, and the imaging quality of the optical lens 10 can be improved, which is beneficial to the use of the user.

In some embodiments, the optical lens 10 satisfies the following relationship:

1.3<TTL/ImgH*f<2.7;

Wherein, TTL is the distance from the object side S1 of the first lens L1 to the imaging surface of the optical lens 10 on the optical axis Z, and ImgH is the maximum imaging circle radius of the optical lens 10 .

That is to say, TTL/ImgH*f can be any value in the interval (1.3, 2.7), for example, the value is 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5 , 2.6, etc.

When the above-mentioned relational expression is satisfied, the overall length of the optical lens 10 can be reduced, which is beneficial to the miniaturized production of the optical lens 10 .

In some embodiments, the optical lens 10 further includes an infrared filter L5. When the optical lens 10 is used for imaging, the light emitted or reflected by the object enters the optical lens 10 from the object side direction, and passes through the first lens L1, the second lens L2, the third lens L3, the fourth lens L4 and the The infrared filter L5 finally converges on the imaging surface. The infrared filter L5 can filter out the influence of visible light in the ambient light on imaging, allowing only infrared light to pass through, thereby improving the imaging quality of infrared light.

Further, the substrate L6 is disposed between the object to be photographed and the object side surface of the first lens L1, and the material of the substrate L6 may be plastic or glass, or other transparent materials. By arranging a transparent substrate L6 between the subject and the first lens L1, the optical lens 10 can be applied to under-screen fingerprints. In use, the user's finger presses on the substrate L6, and the photosensitive element 20 collects a fingerprint image for fingerprint identification. It can be understood that since the infrared filter L5 is used to only allow infrared light to pass through, the substrate L6 can be a light-transmitting substrate L6, which can be infrared light, or visible light and infrared light, etc. After passing through the light-transmitting substrate L6, the infrared filter L5 filters out the excess light, and only allows the infrared light to pass through.

In some embodiments, the first lens L1 , the second lens L2 , the third lens L3 and the fourth lens L4 may all be plastic lenses or glass lenses. The cost of the plastic lens is low, which is beneficial to reduce the cost of the entire optical lens 10 ; the glass lens is less likely to cause thermal expansion and contraction due to changes in ambient temperature, so that the imaging quality of the optical lens 10 is relatively stable. In some embodiments, at least one surface of the first lens L1 , the second lens L2 and the third lens L3 is aspherical. The optical lens 10 can effectively reduce the total length of the optical lens 10 by adjusting the curvature radius and aspheric coefficient of each lens surface, and can effectively correct aberrations and improve image quality.

In the embodiment of the present invention, the object side surface and the image side surface of the first lens L1, the second lens L2, the third lens L3 and the fourth lens L4 are all aspherical surfaces, and are made of plastic materials to achieve the ultra-thin infrared lens. design.

The shape of the aspheric surface is determined by the following formula:

where Z is the distance from the corresponding point on the aspheric surface to the plane tangent to the surface vertex, r is the distance from the corresponding point on the aspheric surface to the optical axis, c is the curvature of the aspheric vertex, k is the conic coefficient, and Ai is the aspheric surface The coefficient corresponding to the i-th higher-order term in the face formula.

Specifically, the object side surface S9 and the image side surface S10 of the infrared filter L5 are both flat surfaces.

Example 1:

Referring to FIG. 1 , in the first embodiment, the first lens L1 has a negative inflection force, the second lens L2 has a positive inflection force, the third lens L3 has a positive inflection force, and the fourth lens L4 has a positive inflection force.

The object side S1 is convex near the optical axis, and the image side S2 is concave near the optical axis. The object side S3 is convex near the optical axis near the optical axis, the object side S3 is concave near the circumference near the optical axis, the image side S4 is convex near the optical axis Z, and the image side S4 is near the circumference. Near the optical axis is a concave surface. The object side S5 is convex near the optical axis, the image side S6 is convex near the optical axis Z, and the image side S6 is concave near the circumference near the optical axis. The object side S7 is convex near the optical axis, and the image side S8 is convex near the optical axis.

Referring to FIGS. 2A to 2C , the optical lens 10 satisfies the conditions in the following table:

Table 1

In Table 1, f is the effective focal length of the optical lens 10; FNO is the aperture number of the optical lens 10; HFOV is half of the maximum angle of view of the optical lens 10; TTL is the total optical length of the optical lens 10, that is, the object side of the first lens The distance on the optical axis to the imaging plane of the optical lens. The unit of Y radius (radius of curvature), thickness, and focal length is mm. The reference wavelength for focal length is 537 nm; the reference wavelength for refractive index and Abbe number is 587.56 nm.

Table 2

face number	S1	S2	S3	S4
K	-6.0563E-01	-9.8690E-01	-9.2191E+00	-8.6037E+01
A4	-6.1285E-01	-2.6811E-01	-5.4650E-01	-2.3504E-01
A6	7.8147E-01	-2.1066E+00	-1.2471E+00	-1.1949E+00
A8	-6.2547E-01	1.0441E+01	6.8506E+00	2.1844E+01
A10	3.0485E-01	-1.9642E+01	-1.4489E+01	-1.3838E+02
A12	-8.8377E-02	1.7908E+01	4.0575E+01	6.6561E+02
A14	1.3914E-02	-8.0758E+00	-7.5797E+01	-1.7790E+03
A16	-9.0728E-04	1.4560E+00	4.9921E+01	2.1123E+03
face number	S5	S6	S7	S8
K	1.0457E+01	9.7027E+01	-1.2927E+00	9.9000E+01
A4	-2.7295E-01	-2.3268E+00	-1.5607E+00	6.0667E-01
A6	3.6036E+00	1.5249E+01	9.9451E+00	8.7294E-01
A8	-2.2081E+01	-1.1295E+02	-5.1077E+01	-9.4003E+00
A10	7.2697E+01	6.4081E+02	1.7161E+02	2.8990E+01
A12	-8.2736E+01	-2.2379E+03	-3.5126E+02	-5.0701E+01
A14	0.0000E+00	4.2319E+03	3.8983E+02	4.7389E+01
A16	0.0000E+00	-3.2282E+03	-1.7890E+02	-1.8092E+01

The above Table 2 lists the conic coefficient K and the even-order correction coefficient Ai of each aspherical surface (S1-S8) of the optical lens 10, which are obtained from the above-mentioned aspherical surface formula.

2A to 2C are respectively a spherical aberration curve graph, an astigmatism curve graph and a distortion graph in the first embodiment.

The abscissa of the spherical aberration curve represents the focus shift, and the ordinate represents the normalized field of view. When the wavelengths given in Figure 2A are 537.0000nm and 460.0000nm, the focus shifts of different fields of view are all within ±0.05mm. , indicating that the spherical aberration of the optical lens 10 in this embodiment is small and the imaging quality is good.

The abscissa of the astigmatism graph represents the focus shift, and the ordinate represents the image height, and the unit is mm. The astigmatism curve given in FIG. 2B indicates that when the wavelength is 537.0000 nm, the focus shifts of the sagittal image plane and the meridional image plane are both within ±0.05mm, which shows that the optical lens 10 in this embodiment has a small astigmatism, and the imaging Good quality.

The abscissa of the distortion graph represents the distortion rate, and the ordinate represents the image height, and the unit is mm. The distortion curve given in FIG. 2C indicates that the distortion at a wavelength of 537.0000 nm is within ±1.05%, indicating that the distortion of the optical lens 10 in this embodiment is well corrected and the image quality is good.

Embodiment 2:

Referring to FIG. 3 , in the second embodiment, the first lens L1 has a negative inflection force, the second lens L2 has a positive inflection force, the third lens L3 has a positive inflection force, and the fourth lens L4 has a positive inflection force.

The object side S1 is convex near the optical axis, and the image side S2 is concave near the optical axis. The object side surface S3 is convex near the optical axis Z, the object side S3 is concave near the circumference near the optical axis, and the image side S4 is concave near the optical axis. The object side S5 is convex near the optical axis, and the image side S6 is convex near the optical axis. The object side S7 is convex near the optical axis Z, the object side S7 is concave near the optical axis Z, and the image side S8 is convex near the optical axis.

Referring to FIGS. 4A to 4C , the optical lens 10 satisfies the conditions in the following table:

table 3

In Table 3, f is the effective focal length of the optical lens 10; FNO is the aperture number of the optical lens 10; HFOV is half of the maximum field angle of the optical lens 10; TTL is the total optical length of the optical lens 10, that is, the object side of the first lens The distance on the optical axis to the imaging plane of the optical lens. The unit of Y radius (radius of curvature), thickness, and focal length is mm. The reference wavelength for focal length is 537 nm; the reference wavelength for refractive index and Abbe number is 587.56 nm.

Table 4

Table 4 above lists the conic coefficient K and the even-order correction coefficient Ai of each aspherical surface (S1-S8) of the optical lens 10, which are obtained from the above-mentioned aspherical surface formula.

4A to 4C are respectively a spherical aberration graph, an astigmatism graph, and a distortion graph in the second embodiment.

The abscissa of the spherical aberration curve represents the focus shift, and the ordinate represents the normalized field of view. When the wavelengths given in Figure 4A are 537.0000nm and 460.0000nm respectively, the focus shifts of different fields of view are all within ±0.05mm , indicating that the spherical aberration of the optical lens 10 in this embodiment is small and the imaging quality is good.

The abscissa of the astigmatism graph represents the focus shift, and the ordinate represents the image height, and the unit is mm. The astigmatism curve given in FIG. 4B indicates that when the wavelength is 537.0000 nm, the focus shifts of the sagittal image plane and the meridional image plane are both within ±0.1 mm, which shows that the optical lens 10 in this embodiment has a small astigmatism, and the imaging Good quality.

The abscissa of the distortion graph represents the distortion rate, and the ordinate represents the image height, and the unit is mm. The distortion curve given in FIG. 4C indicates that the distortion at a wavelength of 537.0000 nm is within ±1.05%, indicating that the distortion of the optical lens 10 in this embodiment has been better corrected and the image quality is better.

Embodiment three:

Referring to FIG. 5 , in the third embodiment, the first lens L1 has a negative inflection force, the second lens L2 has a positive inflection force, the third lens L3 has a positive inflection force, and the fourth lens L4 has a positive inflection force.

The object side S1 is convex near the optical axis, and the image side S2 is concave near the optical axis. The object side S3 is convex near the optical axis, and the image side S4 is convex near the optical axis. The object side surface S5 is convex near the optical axis Z, the object side S5 is concave near the circumference near the optical axis, and the image side S6 is convex near the optical axis. The object side S7 is convex near the optical axis, the image side S8 is convex near the optical axis Z, and the image side S8 is concave near the circumference near the optical axis.

Referring to FIGS. 6A to 6C , the optical lens 10 satisfies the conditions in the following table:

table 5

In Table 5, f is the effective focal length of the optical lens 10; FNO is the aperture number of the optical lens 10; HFOV is half of the maximum field angle of the optical lens 10; TTL is the total optical length of the optical lens 10, that is, the object side of the first lens The distance on the optical axis to the imaging plane of the optical lens. The unit of Y radius (radius of curvature), thickness, and focal length is mm. The reference wavelength for focal length is 537 nm; the reference wavelength for refractive index and Abbe number is 587.56 nm.

Table 6

The above Table 6 lists the conic coefficient K and the even-order correction coefficient Ai of each aspherical surface (S1-S8) of the optical lens 10, which are obtained from the above-mentioned aspherical surface formula.

6A to 6C are respectively a spherical aberration graph, an astigmatism graph and a distortion graph in the third embodiment.

The abscissa of the spherical aberration curve represents the focus shift, and the ordinate represents the normalized field of view. When the wavelengths given in Figure 6A are 537.0000nm and 460.0000nm, the focus shifts of different fields of view are all within ±0.05mm. , indicating that the spherical aberration of the optical lens 10 in this embodiment is small and the imaging quality is good.

The abscissa of the astigmatism graph represents the focus shift, and the ordinate represents the image height, and the unit is mm. The astigmatism curve given in FIG. 6B indicates that when the wavelength is 537.0000 nm, the focal shifts of the sagittal image plane and the meridional image plane are both within ±0.1 mm, indicating that the optical lens 10 in this embodiment has small astigmatism and imaging Good quality.

The abscissa of the distortion graph represents the distortion rate, and the ordinate represents the image height, and the unit is mm. The distortion curve given in FIG. 6C indicates that the distortion at a wavelength of 537.0000 nm is within ±1.05%, indicating that the distortion of the optical lens 10 in this embodiment is well corrected and the image quality is good.

Embodiment 4:

Referring to FIG. 7 , in the fourth embodiment, the first lens L1 has a negative inflection force, the second lens L2 has a positive inflection force, the third lens L3 has a positive inflection force, and the fourth lens L4 has a positive inflection force.

The object side S1 is convex near the optical axis, and the image side S2 is concave near the optical axis. The object side S3 is convex near the optical axis near the optical axis, the object side S3 is concave near the circumference near the optical axis, the image side S4 is convex near the optical axis Z, and the image side S4 is near the circumference. Near the optical axis is a concave surface. The object side S5 is convex near the optical axis, and the image side S6 is convex near the optical axis. The object side surface S7 is convex near the optical axis Z, the object side S7 is concave near the circumference near the optical axis, and the image side S8 is convex near the optical axis.

Referring to FIGS. 8A to 8C , the optical lens 10 satisfies the conditions in the following table:

Table 7

In Table 7, f is the effective focal length of the optical lens 10; FNO is the aperture number of the optical lens 10; HFOV is half of the maximum angle of view of the optical lens 10; TTL is the total optical length of the optical lens 10, that is, the object side of the first lens The distance on the optical axis to the imaging plane of the optical lens. The unit of Y radius (radius of curvature), thickness, and focal length is mm. The reference wavelength for focal length is 537 nm; the reference wavelength for refractive index and Abbe number is 587.56 nm.

Table 8

The above Table 8 lists the conic coefficient K and the even-order correction coefficient Ai of each aspherical surface (S1-S8) of the optical lens 10, which are obtained from the above-mentioned aspherical surface formula.

8A to 8C are respectively a spherical aberration graph, an astigmatism graph and a distortion graph in the fourth embodiment.

The abscissa of the spherical aberration curve represents the focus shift, and the ordinate represents the normalized field of view. When the wavelengths given in Figure 8A are 537.0000nm and 460.0000nm respectively, the focus shifts of different fields of view are all within ±0.1mm , indicating that the spherical aberration of the optical lens 10 in this embodiment is small and the imaging quality is good.

The abscissa of the astigmatism graph represents the focus shift, and the ordinate represents the image height, and the unit is mm. The astigmatism curve given in FIG. 8B indicates that when the wavelength is 537.0000 nm, the focus shifts of the sagittal image plane and the meridional image plane are both within ±0.1 mm, which indicates that the optical lens 10 in this embodiment has a small astigmatism and improved imaging. Good quality.

The abscissa of the distortion graph represents the distortion rate, and the ordinate represents the image height, and the unit is mm. The distortion curve given in FIG. 8C indicates that the distortion at a wavelength of 537.0000 nm is within ±1.05%, indicating that the distortion of the optical lens 10 in this embodiment is well corrected and the image quality is good.

Embodiment 5:

Referring to FIG. 9 , in the fifth embodiment, the first lens L1 has a negative inflection force, the second lens L2 has a positive inflection force, the third lens L3 has a positive inflection force, and the fourth lens L4 has a positive inflection force.

The object side S1 is convex near the optical axis, and the image side S2 is concave near the optical axis. The object side surface S3 is convex near the optical axis, and the image side S4 is concave near the optical axis. The object side S5 is convex near the optical axis, and the image side S6 is convex near the optical axis. The object side S7 is convex near the optical axis Z, the object side S7 is concave near the circumference and the optical axis, the image side S8 is concave near the optical axis Z, and the image side S8 is near the circumference. The vicinity of the optical axis is convex.

Referring to FIGS. 10A to 10C , the optical lens 10 satisfies the conditions in the following table:

Table 9

In Table 9, f is the effective focal length of the optical lens 10; FNO is the aperture number of the optical lens 10; HFOV is half of the maximum field angle of the optical lens 10; TTL is the total optical length of the optical lens 10, that is, the object side of the first lens The distance on the optical axis to the imaging plane of the optical lens. The unit of Y radius (radius of curvature), thickness, and focal length is mm. The reference wavelength for focal length is 537 nm; the reference wavelength for refractive index and Abbe number is 587.56 nm.

Table 10

face number	S1	S2	S3	S4
K	-5.8502E-01	-8.7394E-01	3.4914E+00	9.3819E+01
A4	-1.2675E+00	-9.9270E-01	-1.2621E+00	-1.2183E+00
A6	3.4905E+00	-3.9102E+00	1.2873E+01	4.9563E+01
A8	-5.8200E+00	4.5276E+01	-1.7020E+02	-1.7278E+03
A10	6.2992E+00	-8.3266E+01	1.2573E+03	3.6726E+04
A12	-4.5184E+00	-2.6662E+02	-5.2191E+03	-4.7823E+05
A14	2.1306E+00	1.4296E+03	1.1518E+04	3.8508E+06
A16	-6.3410E-01	-2.5247E+03	-8.7898E+03	-1.8611E+07
A18	1.0785E-01	2.0257E+03	-1.0406E+04	4.9340E+07
A20	-7.9823E-03	-6.2243E+02	1.6879E+04	-5.4915E+07
face number	S5	S6	S7	S8
K	-2.8238E+01	-9.2687E+00	-2.2912E+00	-9.9000E+01
A4	-1.7216E-01	-2.4523E+00	-6.0806E-01	1.8585E+00
A6	6.7551E+00	8.1938E+00	5.5309E+00	-1.0000E+01
A8	-1.4345E+02	-2.5153E+01	-7.0624E+01	4.6621E+01
A10	1.4118E+03	-1.1200E+02	5.3526E+02	-2.3707E+02
A12	-7.9962E+03	1.3879E+03	-2.9145E+03	9.0621E+02
A14	2.4367E+04	-5.0163E+03	1.0692E+04	-2.3197E+03
A16	-3.1186E+04	6.1634E+03	-2.4981E+04	3.7297E+03
A18	0.0000E+00	0.0000E+00	3.3314E+04	-3.3728E+03
A20	0.0000E+00	0.0000E+00	-1.9091E+04	1.2977E+03

The above Table 2 lists the conic coefficient K and the even-order correction coefficient Ai of each aspherical surface (S1-S8) of the optical lens 10, which are obtained from the above-mentioned aspherical surface formula.

10A to 10C are respectively a spherical aberration graph, an astigmatism graph and a distortion graph in the fifth embodiment.

The abscissa of the spherical aberration curve represents the focus shift, and the ordinate represents the normalized field of view. When the wavelengths given in Figure 10A are 537.0000nm and 460.0000nm respectively, the focus shifts of different fields of view are all within ±0.05mm , indicating that the spherical aberration of the optical lens 10 in this embodiment is small and the imaging quality is good.

The abscissa of the astigmatism graph represents the focus shift, and the ordinate represents the image height, and the unit is mm. The astigmatism curve given in FIG. 10B indicates that when the wavelength is 537.0000 nm, the focus shifts of the sagittal image plane and the meridional image plane are both within ±0.05mm, which indicates that the optical lens 10 in this embodiment has small astigmatism and imaging. Good quality.

The abscissa of the distortion graph represents the distortion rate, and the ordinate represents the image height, and the unit is mm. The distortion curve given in FIG. 10C indicates that the distortion at a wavelength of 537.0000 nm is within ±1.05%, indicating that the distortion of the optical lens 10 in this embodiment is well corrected and the image quality is good.

Embodiment 6:

Referring to FIG. 11 , in the sixth embodiment, the first lens L1 has a negative inflection force, the second lens L2 has a positive inflection force, the third lens L3 has a positive inflection force, and the fourth lens L4 has a positive inflection force.

The object side S1 is convex near the optical axis, and the image side S2 is concave near the optical axis. The object side surface S3 is convex near the optical axis, and the image side S4 is concave near the optical axis. The object side S5 is convex near the optical axis, and the image side S6 is convex near the optical axis. The object side S7 is convex near the optical axis Z, the object side S7 is concave near the circumference and the optical axis, the image side S8 is concave near the optical axis Z, and the image side S8 is near the circumference. The vicinity of the optical axis is convex.

Referring to FIGS. 12A to 12C , the optical lens 10 satisfies the conditions in the following table:

Table 11

In Table 11, f is the effective focal length of the optical lens 10; FNO is the aperture number of the optical lens 10; HFOV is half of the maximum field angle of the optical lens 10; TTL is the total optical length of the optical lens 10, that is, the object side of the first lens The distance on the optical axis to the imaging plane of the optical lens. The unit of Y radius (radius of curvature), thickness, and focal length is mm. The reference wavelength for focal length is 537 nm; the reference wavelength for refractive index and Abbe number is 587.56 nm.

Table 12

The above Table 12 lists the conic coefficient K and the even-order correction coefficient Ai of each aspherical surface (S1-S8) of the optical lens 10, which are obtained from the above-mentioned aspherical surface formula.

12A to 12C are respectively a spherical aberration graph, an astigmatism graph and a distortion graph in the sixth embodiment.

The abscissa of the spherical aberration curve represents the focus shift, and the ordinate represents the normalized field of view. When the wavelengths given in Figure 12A are 537.0000nm and 460.0000nm, the focus shifts of different fields of view are all within ±0.025mm , indicating that the spherical aberration of the optical lens 10 in this embodiment is small and the imaging quality is good.

The abscissa of the astigmatism graph represents the focus shift, and the ordinate represents the image height, and the unit is mm. The astigmatism curve given in FIG. 12B shows that when the wavelength is 537.0000 nm, the focus shifts of the sagittal image plane and the meridional image plane are both within ±0.05mm, which indicates that the optical lens 10 in this embodiment has small astigmatism and imaging. Good quality.

The abscissa of the distortion graph represents the distortion rate, and the ordinate represents the image height, and the unit is mm. The distortion curve given in FIG. 12C indicates that the distortion at a wavelength of 537.0000 nm is within ±1.05%, which indicates that the distortion of the optical lens 10 in this embodiment is well corrected and the imaging quality is good.

The values of the above relationship 0.7<CT1/CT2<1.0 in the first embodiment to the sixth embodiment are shown in Table 13 below.

Table 13

	0.7<CT1/CT2<1.0
first embodiment	0.2/0.204	0.980
Second Embodiment	0.2/0.205	0.976
Third Embodiment	0.225/0.293	0.768
Fourth Embodiment	0.22/0.309	0.712
Fifth Embodiment	0.216/0.257	0.840
Sixth Embodiment	0.25/0.322	0.776

The values of the above relational expression FNO/tanω<0.88 in the first embodiment to the sixth embodiment are shown in Table 14 below.

Table 14

The values of the above relational formula NA/ImgH>4 in the first embodiment to the sixth embodiment are shown in Table 15 below.

Table 15

	NA/ImgH>4
first embodiment	5.638/1.055	5.344
Second Embodiment	5.364/1.055	5.084
Third Embodiment	5.93/1.055	5.621
Fourth Embodiment	6.17/1.055	5.848
Fifth Embodiment	4.36/1.055	4.133
Sixth Embodiment	5.15/1.055	4.882

The values of the above relationship 0.6<CL*f/P<2.4 in the first embodiment to the sixth embodiment are shown in Table 16 below.

Table 16

	0.6<CL*f/P<2.4
first embodiment	1.5*0.595/1.4	0.638
Second Embodiment	1.5*0.535/1.1	0.730
Third Embodiment	1.5*0.598/1.4	0.641
Fourth Embodiment	1.5*0.57/1.4	0.611
Fifth Embodiment	1.5*0.466/0.3	2.330
Sixth Embodiment	1.5*0.421/0.5	1.263

The values of the above relationship |(R5+R6)/(R5-R6)|<0.7 in the first embodiment to the sixth embodiment are shown in Table 17 below.

Table 17

	|(R5+R6)/(R5-R6)|<0.7
first embodiment	(2.798-14.778)/(2.798+14.778)	-0.682
Second Embodiment	(1.837-1.283)/(1.837+1.283)	0.178
Third Embodiment	(3.066-6.778)/(3.066+6.778)	-0.377
Fourth Embodiment	(3.66-6.538)/(3.66+6.538)	-0.282
Fifth Embodiment	(1.709-0.973)/(1.709+0.973)	0.274
Sixth Embodiment	(1.59-0.851)/(1.59+0.851)	0.303

The values of the above relationship -0.9<f234/f1<-0.6 in the first embodiment to the sixth embodiment are shown in Table 18 below.

Table 18

The values of the above relational expression SAG1/R1<0.66 in the first embodiment to the sixth embodiment are shown in Table 19 below.

Table 19

	SAG1/R1<0.66
first embodiment	0.743/1.231	0.604
Second Embodiment	0.57/1.195	0.477
Third Embodiment	0.8/1.217	0.657
Fourth Embodiment	0.79/1.234	0.640
Fifth Embodiment	0.547/1.39	0.394
Sixth Embodiment	0.736/1.586	0.464

The values of the above relationship |f4/R8|<1.15 in the first embodiment to the sixth embodiment are shown in Table 20 below.

Table 20

	|f4/R8|<1.15
first embodiment	1.2/-375.78	-0.003
Second Embodiment	1.52/-19.091	-0.080
Third Embodiment	1.4/-13.482	-0.104
Fourth Embodiment	1.39/-10.285	-0.135
Fifth Embodiment	2.39/2.082	1.148
Sixth Embodiment	2.24/8.338	0.269

The values of the above relational formula 1.3<TL/ImgH*f<2.7 in the first embodiment to the sixth embodiment are shown in Table 21 below.

Table 21

	1.3<TL/ImgH*f<2.7
first embodiment	3.837/1.055*0.595	2.164
Second Embodiment	3.2/1.055*0.535	1.623
Third Embodiment	4.6/1.055*0.598	2.607
Fourth Embodiment	4.62/1.055*0.57	2.496
Fifth Embodiment	3.44/1.055*0.466	1.519
Sixth Embodiment	3.3/1.055*0.421	1.317

Referring to FIG. 13 , the camera module 100 according to the embodiment of the present invention includes an optical lens 10 and a photosensitive element 20 . The photosensitive element 20 is provided on the image side of the optical lens 10 .

The photosensitive element 20 can be a complementary metal oxide semiconductor (Complementary Metal Oxide Semiconductor, CMOS) photosensitive element 20 or a charge-coupled device (Charge-coupled Device, CCD) photosensitive element 20 .

In the camera module 100 according to the embodiment of the present invention, the ratio of the thickness of the first lens L1 on the optical axis to the thickness of the second lens L2 on the optical axis is between 0.7 and 1.0, so that the lens of the optical lens 10 can be compressed into The thickness on the optical axis can reduce the volume of the optical lens 10, which is beneficial to the miniaturized production of the optical lens 10, so that the optical lens 10 can meet the requirements of high-end products.

Please refer to FIG. 14 , an electronic device 1000 according to an embodiment of the present invention includes a casing 200 and a camera module 100 . The camera module 100 is mounted on the casing 200 .

In the electronic device 1000 according to the embodiment of the present invention, the ratio of the thickness of the first lens L1 on the optical axis to the thickness of the second lens L2 on the optical axis is between 0.7 and 1.0, so that the lens of the optical lens 10 can be compressed into light The thickness on the axis can reduce the volume of the optical lens 10, which is beneficial to the miniaturized production of the optical lens 10, so that the optical lens 10 can meet the requirements of high-end products.

The electronic device 1000 of the embodiment of the present invention includes, but is not limited to, a smart phone (as shown in FIG. 14 ), a mobile phone, a Personal Digital Assistant (PDA), a game console, a personal computer (PC), a camera , smart watches, tablet computers and other information terminal devices or home appliances with camera functions.

In the description of this specification, reference is made to the terms "some embodiments," "one embodiment," "some embodiments," "exemplary embodiments," "examples," "specific examples," or "some examples," etc. The description means that a particular feature, structure, material or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features delimited with "first", "second" may expressly or implicitly include at least one feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Variations, modifications, substitutions, and alterations are made to the embodiments, and the scope of the present invention is defined by the claims and their equivalents.

Claims (12)

1. An optical lens, characterized in that, the optical lens sequentially includes from the object side to the image side:

   a substrate, the substrate includes a display module;

   a first lens, the first lens has a negative refractive power;

   a second lens, the second lens has a positive refractive power;

   aperture;

   the third lens, the third lens has a positive refractive power, the object side of the third lens is convex near the optical axis, and the image side of the third lens is convex near the optical axis;

   a fourth lens, the fourth lens has a positive refractive power;

   The optical lens satisfies the following relationship:

   0.7<CT1/CT2<1.0;

   Wherein, CT1 is the thickness of the first lens on the optical axis, and CT2 is the thickness of the second lens on the optical axis.
2. The optical lens according to claim 1, wherein the object side of the first lens is convex near the optical axis, and the image side of the first lens is concave near the optical axis;

   The object side surface of the fourth lens at the optical axis is a convex surface near the optical axis.
3. The optical lens according to claim 1, wherein the optical lens satisfies the following relationship:

   NA/ImgH>4;

   Wherein, NA is half of the maximum height of the object photographed by the optical lens, and ImgH is the maximum imaging circle radius of the optical lens.
4. The optical lens according to claim 1, wherein the optical lens satisfies the following relationship:

   0.6mm<CL*f/P<2.4mm;

   Wherein, CL is the thickness of the substrate on the optical axis, f is the effective focal length of the optical lens, and P is the distance between the substrate and the first lens on the optical axis.
5. The optical lens according to claim 1, wherein the optical lens satisfies the following relationship:

   |(R5+R6)/(R5-R6)|<0.7;

   Wherein, R5 is the radius of curvature of the object side of the third lens at the optical axis, and R6 is the radius of curvature of the image side of the third lens at the optical axis.
6. The optical lens according to claim 1, wherein the optical lens satisfies the following relationship:

   -0.9<f234/f1<-0.6;

   Wherein, f234 is the combined focal length of the second lens, the third lens, and the fourth lens, and f1 is the effective focal length of the first lens.
7. The optical lens according to claim 1, wherein the optical lens satisfies the following relationship:

   SAG1/R1<0.66;

   Wherein, SAG1 is the sag at the maximum effective radius of the object side of the first lens, and R1 is the radius of curvature of the object side of the first lens at the optical axis.
8. The optical lens according to claim 1, wherein the optical lens satisfies the following relationship:

   |f4/R8|<1.15;

   Wherein, f4 is the effective focal length of the fourth lens, and R8 is the radius of curvature of the image side surface of the fourth lens at the optical axis.
9. The optical lens according to claim 1, wherein the optical lens satisfies the following relationship:

   1.3<TTL/ImgH*f<2.7;

   Wherein, TTL is the distance from the object side of the first lens to the imaging surface of the optical lens on the optical axis, and ImgH is the maximum imaging circle radius of the optical lens.
10. The optical lens according to claim 1, wherein the optical lens satisfies the following relationship:

    FNO/tanω<0.88;

    Wherein, FNO is the aperture number of the optical lens, and ω is half of the maximum angle of view of the optical lens.
11. A camera module, characterized in that the camera module comprises:

    The optical lens of any one of claims 1-10; and

    A photosensitive element, the photosensitive element is arranged on the image side of the optical lens.
12. An electronic device, comprising:

    the shell; and

    The camera module of claim 11, wherein the camera module is mounted on the housing.

Images