WO2021159368A1

WO2021159368A1 - Camera module, electronic device, and automobile

Info

Publication number: WO2021159368A1
Application number: PCT/CN2020/075008
Authority: WO
Inventors: 蔡雄宇; 兰宾利; 周芮
Original assignee: 天津欧菲光电有限公司
Priority date: 2020-02-13
Filing date: 2020-02-13
Publication date: 2021-08-19

Abstract

A camera module (10), sequentially comprising from an object side to an image side: a first lens (L1) having negative refractive power, an image side surface (S1) thereof being a concave surface; a second lens (L2) having negative refractive power, an image side surface (S4) thereof being a concave surface; a third lens (L3), a fourth lens (L4), and a fifth lens (L5) that have positive refractive power, wherein an object side surface (S9) of the fifth lens (L5) is a convex surface, and an image side surface (S10) thereof is a convex surface; a sixth lens (L6) having negative refractive power, an object side surface (S11) thereof being a concave surface; and a diagram (STO) provided on the object side of the fourth lens (L4). The camera module (10) satisfies the following relationship: 0≤Ym/[(1/2)FOVm*P]≤26, wherein Ym is half of an image height corresponding to an m° field angle of the module in a horizontal direction, FOVm is the m° field angle of the module in the horizontal direction, and P is the size of a unit pixel on a photosensitive element (110).

Description

Camera module, electronic device and automobile

Technical field

The present invention relates to the field of optical technology, in particular to a camera module, an electronic device and an automobile.

Background technique

With the development of the automotive industry, users have increasingly higher technical requirements for automotive cameras such as front-view, automatic cruise, driving recorder, and reversing video. Among them, the front-view camera is an on-board camera installed in the front of the car. It can be used as a camera system in the advanced driver assistance system to analyze video content, and provide lane departure warning (LDW), automatic lane keeping assist (LKA), high beam/close Light control and traffic sign recognition (TSR); used when parking and entering, you can intuitively see the obstacles in front of the car to make parking more convenient; realize that the car can pass through special places (such as roadblocks, parking lots, etc.) ) Turn on the front-view camera at any time, make judgments on the driving environment, and feed back to the central system of the car to make correct instructions to avoid driving accidents.

However, the existing front-view camera lens is difficult to meet the shooting and clear imaging of a large angle range at the same time, so that it is difficult to make real-time and accurate warnings, which leads to the existence of driving risks.

Summary of the invention

According to various embodiments of the present application, a camera module, an electronic device, and an automobile are provided.

A camera module includes in turn from the object side to the image side:

A first lens with negative refractive power, the image side surface of the first lens is concave;

A second lens with negative refractive power, the image side surface of the second lens is concave;

The third lens with positive refractive power;

The fourth lens with positive refractive power;

A fifth lens with positive refractive power, the object side of the fifth lens is convex, and the image side is convex;

A sixth lens with negative refractive power, the object side of the sixth lens is concave;

The camera module further includes an aperture, which is arranged on the object side of the fourth lens;

And the camera module satisfies the following relationship:

0≤Ym/[(1/2)FOVm*P]≤26;

Wherein, Ym is half of the image height corresponding to the m° field of view of the camera module in the horizontal direction, the unit of Ym is mm, and 0<m≤100, and FOVm is the camera module in the horizontal direction The m° field of view angle, P is the size of the unit pixel on the photosensitive element.

An electronic device includes a housing and the camera module described in any one of the above, and the camera module is arranged in the housing.

An automobile includes a vehicle body and the electronic device, and the electronic device is arranged on the vehicle body.

The details of one or more embodiments of the present invention are set forth in the following drawings and description. Other features, objects and advantages of the present invention will become apparent from the description, drawings and claims.

Description of the drawings

In order to better describe and illustrate the embodiments and/or examples of the inventions disclosed herein, one or more drawings may be referred to. The additional details or examples used to describe the drawings should not be considered as limiting the scope of any of the disclosed inventions, the currently described embodiments and/or examples, and the best mode of these inventions currently understood.

FIG. 1 is a schematic diagram of the camera module provided by the first embodiment of the application;

Figure 2 shows the longitudinal spherical aberration diagram (mm), astigmatism diagram (mm) and distortion diagram (%) of the camera module in the first embodiment;

FIG. 3 is a schematic diagram of a camera module provided by a second embodiment of this application;

4 is a longitudinal spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%) of the camera module in the second embodiment;

FIG. 5 is a schematic diagram of a camera module provided by a third embodiment of this application;

Fig. 6 is a longitudinal spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%) of the camera module in the third embodiment;

FIG. 7 is a schematic diagram of a camera module provided by a fourth embodiment of this application;

8 is a longitudinal spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%) of the camera module in the fourth embodiment;

FIG. 9 is a schematic diagram of a camera module provided by a fifth embodiment of this application;

10 is a longitudinal spherical aberration diagram (mm), an astigmatism diagram (mm) and a distortion diagram (%) of the camera module in the fifth embodiment;

FIG. 11 is a schematic diagram of a camera module provided by a sixth embodiment of this application;

FIG. 12 is a longitudinal spherical aberration diagram (mm), an astigmatism diagram (mm), and a distortion diagram (%) of the camera module in the sixth embodiment;

FIG. 13 is a schematic diagram of an electronic device provided by an embodiment of the application;

FIG. 14 is a schematic diagram of a car provided by an embodiment of the application.

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or a central element may also be present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or an intermediate element may be present at the same time. The terms "inner", "outer", "left", "right" and similar expressions used herein are for illustrative purposes only, and do not mean that they are the only embodiments.

With the development of the automotive industry, users have increasingly higher technical requirements for automotive cameras such as front-view, automatic cruise, driving recorder, and reversing video. Among them, the front-view camera is an on-board camera installed in the front of the car. It can be used as a camera system in the advanced driver assistance system to analyze video content, and provide lane departure warning (LDW), automatic lane keeping assist (LKA), high beam/close Light control and traffic sign recognition (TSR); used when parking and entering, you can intuitively see the obstacles in front of the car to make parking more convenient; realize that the car can pass through special places (such as roadblocks, parking lots, etc.) ) Turn on the front-view camera at any time, make judgments on the driving environment, and feed back to the central system of the car to make correct instructions to avoid driving accidents. However, the existing front-view camera lens has a low resolution and a small depth of field range, and it is difficult to simultaneously meet the shooting and clear imaging of a large angle range, which makes it difficult to make real-time and accurate warnings, which leads to the existence of driving risks. To this end, some embodiments of the present application provide a camera module, an electronic device, and a car to solve the above-mentioned problems.

Referring to FIG. 1, in some embodiments of the present application, the camera module 10 includes a first lens L1, a second lens L2, a third lens L3, a stop STO, a fourth lens L4, and a second lens in order from the object side to the image side. Five lens L5, sixth lens L6 and photosensitive element 110. Among them, the first lens L1 has negative refractive power, the second lens L2 has negative refractive power, the third lens L3 has positive refractive power, the fourth lens L4 has positive refractive power, the fifth lens L5 has positive refractive power, and the sixth lens L6 has negative refractive power. The first lens L1 to the sixth lens L6 each contain only one lens, and each lens in the camera module 10 is arranged coaxially with the stop STO, that is, the optical axis of each lens and the center of the stop STO are on the same straight line. The straight line may be referred to as the optical axis of the camera module 10. In other embodiments, the diaphragm STO can be set at any reasonable position on the object side of the fourth lens L4 to control the amount of light of the system, spherical aberration caused by edge rays, stray light, etc., for example, the diaphragm STO can be set On the object side of the first lens L1, or between the first lens L1 and the second lens L2, or between the second lens L2 and the third lens L3. In addition, the photosensitive element 110 may be a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor, complementary metal oxide semiconductor).

The first lens L1 includes an object side surface S1 and an image side surface S2, the second lens L2 includes an object side surface S3 and an image side surface S4, the third lens L3 includes an object side surface S5 and an image side surface S6, and the fourth lens L4 includes an object side surface S7 and an image side surface. S8, the fifth lens L5 includes an object side surface S9 and an image side surface S10, and the sixth lens L6 includes an object side surface S11 and an image side surface S12. In addition, the camera module 10 also has an imaging surface S17. The imaging surface S17 is located on the image side of the sixth lens L6. The incident light can be imaged on the imaging surface S17 after being adjusted by the lenses of the camera module 10. The surface S17 can be regarded as the photosensitive surface of the photosensitive element 110. The camera module 10 also has an object surface at the same time, and the object on the object surface can form a clear image on the imaging surface S17 of the camera module 10.

In the above embodiment, the object side and image side of the first lens L1 to the third lens L3 are spherical; the object side S7 and the image side S8 of the fourth lens L4 are aspherical; the object side S9 of the fifth lens L5 Both the image side surface S10 and the image side surface S10 are spherical surfaces; the object side surface S11 of the sixth lens L6 is a spherical surface, and the image side surface S12 is aspherical. In addition, the image side surface S10 of the fifth lens L5 is cemented with the object side surface S11 of the sixth lens L6, so that the fifth lens L5 and the sixth lens L6 form a cemented lens. By making the fifth lens L5 and the sixth lens L6 form a cemented lens, It can effectively reduce the assembly sensitivity of the system, reduce the difficulty of lens manufacturing and lens assembly, thereby increasing the yield.

In some embodiments, the object side and/or at least one image side of at least one of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6 is non- Spherical.

The aspherical surface configuration can effectively help the camera module 10 eliminate aberrations and solve the problem of distortion of the field of view. At the same time, it is also conducive to the miniaturization design of the camera module 10, so that the camera module 10 can maintain the miniaturization design. At the same time, it has excellent analytical effects. Of course, in other embodiments, the object side surface of any one of the first lens L1 to the sixth lens L6 can be spherical or aspherical; the image side surface of any one of the first lens L1 to the sixth lens L6 can be The spherical surface may also be an aspherical surface. The aberration problem can also be effectively eliminated through the cooperation of the spherical surface and the aspherical surface, so that the camera module 10 has an excellent imaging effect and at the same time improves the flexibility of lens design and assembly. In particular, when the sixth lens L6 is an aspheric lens, it will help to finally correct the aberrations generated by the front lenses, thereby helping to improve the imaging quality. When at least one of the object side surface and the image side surface of the lens is aspherical, the lens can be called an aspherical lens.

The calculation of the aspheric surface can refer to the aspheric formula:

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

On the other hand, in the above embodiment, the materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6 are all glass. In some embodiments, the material of each lens in the camera module 10 is plastic. In other embodiments, the material of the first lens L1 is glass, and the material of the second lens L2 to the sixth lens L6 is plastic. In this case, the material of the lens located on the object side in the camera module 10 is Therefore, these glass lenses located on the object side have a good resistance to extreme environments and are not easily affected by the object side environment to cause aging. Therefore, when the camera module 10 is exposed to high temperatures and other extreme environments, this The structure can effectively avoid the deterioration of the image quality and the service life of the camera module 10. The plastic lens can reduce the weight of the camera module 10 and the production cost, while the glass lens can withstand higher temperatures and has excellent optical performance. Of course, the material configuration of each lens in the camera module 10 is not limited to the foregoing embodiment, and the material of any lens may be plastic or glass.

In the above embodiment, the camera module 10 includes a filter L7, and the filter L7 is disposed on the image side of the fifth lens L5. The filter L7 includes an object side surface S13 and an image side surface S14. The filter L7 may be an infrared cut-off filter. At this time, the filter L7 is used to filter infrared light to prevent the infrared light from reaching the imaging surface S17, thereby preventing the infrared light from interfering with normal imaging. When used in in-vehicle equipment, the camera module 10 with infrared cut-off function can be used in electronic devices such as driving recorders and rear view equipment. In addition, in some embodiments, the filter L7 may not be provided, but a filter coating is provided on any one of the first lens L1 to the sixth lens L6 to achieve the effect of filtering infrared light. Correspondingly, the filter L7 in some embodiments may also be an infrared band-pass filter. In this case, the filter L7 can be used to filter visible light through infrared light, and a camera module provided with an infrared band-pass filter 10 can be used as an identification module and used with corresponding infrared emission modules (such as TOF time-of-flight or 3D structured light) on electronic devices. This type of camera module 10 can be specifically used to identify facial contours, pupils, fingerprints, and palm prints. Etc., or can also be used in distance measuring devices.

In some embodiments, the camera module 10 is provided with a protective glass L8 between the filter L7 and the photosensitive element 110. The protective glass L8 is used to protect the photosensitive element 110. The protective glass L8 includes an object side surface S15 and an image side surface S16.

In other embodiments, the first lens L1 may also include two or more lenses, the object side of the lens closest to the object side is the object side S1 of the first lens L1, and the image side of the lens closest to the image side is The image side surface S2 of the first lens L1. Correspondingly, the second lens L2, third lens L3, fourth lens L4, fifth lens L5, and sixth lens L6 in some embodiments are not limited to the case where only one lens is included.

In some embodiments, the camera module 10 further includes a mirror arranged on the object side of the first lens L1 for changing the incident light path. The mirror may be, for example, a prism or a plane mirror, so that the camera module 10 has a periscope.式结构。 Type structure.

In some embodiments, the camera module 10 also satisfies the following relationships:

0≤Ym/[(1/2)FOVm*P]≤26;

Among them, Ym is half of the image height corresponding to the m° field of view of the camera module 10 in the horizontal direction, the unit of Ym is mm, and 0<m ≤100, and FOVm is the m of the camera module 10 in the horizontal direction. °field angle, P is the size of a unit pixel on the photosensitive element 110. Specifically, Ym/[(1/2)FOVm*P] can be 19, 20, 21, 22, 23, or 24, and the unit of the relational expression is (Pixel/deg). A unit of Pixel can be understood as a pixel unit.

When the above-mentioned camera module 10 satisfies the structural conditions of each lens, it is beneficial to maintain a good imaging quality while having a large field of view. When the above-mentioned relationship is satisfied, the camera module 10 can reasonably adjust the angle of view per degree of the system. The corresponding number of pixels, while having a large viewing angle shooting range, there are enough pixels on the photosensitive surface corresponding to each degree of field of view to achieve clear imaging of the module, so that the camera module 10 is in the entire field of view It has high enough pixels and imaging resolution capabilities to provide the system with better imaging results. When the upper limit of the relational expression is exceeded, the distribution of the number of pixels in the central field of view of the pixel area is insufficient, and the imaging surface S17 cannot achieve sufficient resolution, which is not conducive to the telephoto characteristics of the central field of view of the optical system, that is, it is difficult to have a long-distance depth of field range.

21≤Y ₁₀ /[(1/2)FOV10*P]≤26;

Wherein, Y ₁₀ is half of the image height corresponding to the 10° field of view of the camera module 10 in the horizontal direction, _{the unit of Y 10} is mm, and FOV 10 is the 10° field of view of the camera module 10 in the horizontal direction. Specifically, Y ₁₀ /[(1/2)FOV10*P] may be 21 (Pixel/deg), 22 (Pixel/deg), 23 (Pixel/deg), or 24 (Pixel/deg). When the above relationship is satisfied, the number of pixels corresponding to each degree of field of view within the central field of view of the system (within ±5° field of view in the horizontal direction, that is, within the range of 10° field of view in the horizontal direction) corresponding to the number of pixels Distribution, so that the system has high enough pixels and imaging resolution capabilities in the central field of view, so that important information in the center of the field of view can be clearly highlighted, and at the same time, the small field of view and telephoto can be displayed in the central field of view. The characteristics are reflected, the details of long-distance shooting are clearly presented, and the system provides better imaging effects. When the lower limit of the relational expression is exceeded, the distribution of the number of pixels in the central field of view of the pixel area is insufficient, and the imaging surface S17 cannot achieve sufficient resolution, which is not conducive to the telephoto characteristics of the central field of view of the optical system, that is, it is difficult to have a long-distance depth of field range.

20≤(Y ₅₀ -Y ₁₀ )/[(1/2)(FOV50-FOV10)*P]≤26;

Among them, Y ₅₀ is half of the image height corresponding to the 50° field of view _{of the camera module 10 in the horizontal direction, and Y 10} is half of the image height corresponding to the 10° field of view of the camera module 10 in the horizontal direction. The units of Y ₁₀ and Y ₅₀ are both mm, FOV50 is a 50° field of view of the camera module 10 in the horizontal direction, and FOV10 is a 10° field of view of the camera module 10 in the horizontal direction. Specifically, (Y ₅₀ -Y ₁₀ )/[(1/2)(FOV50-FOV10)*P] can be 20 (Pixel/deg), 21 (Pixel/deg), or 22 (Pixel/deg). When the above relationship is satisfied, the number of pixels corresponding to each degree of field of view within the range of the system's adjacent center field of view (ie within the range of ±5° field of view to ±25° field of view in the horizontal direction) can be reasonably allocated , So that the system has sufficiently high pixels and imaging resolution capabilities in the field of view area adjacent to the central field of view, so that important information adjacent to the center of the field of view can be clearly highlighted and provide better imaging effects for the system. When it exceeds the range of the relational expression, it will be difficult to achieve the technical effect within the above-mentioned relational range.

9≤(Y ₁₀₀ -Y ₅₀ )/[(1/2)(FOV100-FOV50)*P]≤20;

Wherein, Y ₁₀₀ is half of the image height corresponding to the camera module 10 in the horizontal direction of 100° field of view, Y ₅₀ is half of the image height corresponding to the camera module 10 in the horizontal direction of 50° field of view. FOV100 is a 100° field of view of the camera module 10 in the horizontal direction, and FOV50 is a 50° field of view of the camera module 10 in the horizontal direction. Specifically, (Y ₁₀₀ -Y ₅₀ )/[(1/2)(FOV100-FOV50)*P] can be 16 (Pixel/deg), 17 (Pixel/deg), or 18 (Pixel/deg). When the above relationship is satisfied, the number of pixels corresponding to each degree of field of view within the peripheral field of view of the system (that is, within the range of ±25° field of view to the maximum field of view in the horizontal direction) can be reasonably allocated to make the system There are sufficiently high pixels and imaging resolution capabilities in the edge field of view, so that the system can perform clear imaging at the large-angle edge field of view, and at the same time, the characteristics of the large field of view and wide shooting range are reflected in the edge field of view. The system provides better imaging results. When it is lower than the lower limit of the relational expression, the total optical length of the optical system 10 is too long, which is not conducive to the miniaturization of the system; and when the upper limit of the relational expression is exceeded, the distance between the lenses before and after the aperture STO is too long, which is not conducive to the stability of the position of the aperture STO. The brightness of the image surface at the edge of the optical system 10 will be reduced, and the edge resolution will be affected.

6＜D34*100/TTL＜16;

Among them, D34 is the distance from the image side surface S6 of the third lens L3 to the object side surface S7 of the fourth lens L4 on the optical axis, and TTL is the total optical length of the camera module 10. Specifically, D34*100/TTL can be 6.80, 7.00, 7.50, 8.00, 9.00, 11.00, 13.00, 14.00, 14.50, 15.00 or 15.40. When the above relationship is satisfied, the light incident to the system is beneficial to fill the pupil, enhance the brightness and clarity of the imaging surface S17, and at the same time, it is beneficial to shorten the total length of the system, so that the system has the characteristics of compact structure and miniaturization. When the upper limit of the relational expression is exceeded, it is not conducive to the wide-angle of the optical system 10; when it is lower than the lower limit of the relational expression, the optical system 10 will produce greater distortion, which is disadvantageous to the consistency of the imaging of the optical system 10 and the shooting object.

3.0<f/tan(HFOV)<4.2;

Among them, f is the effective focal length of the camera module 10, HFOV is half of the maximum field angle of the camera module 10 in the horizontal direction, and the unit of f is mm. Specifically, f/tan(HFOV) may be 3.10mm, 3.15mm, 3.20mm, 3.30mm, 3.35mm, 3.40mm, or 3.45mm. When the above relationship is satisfied, a sufficient angle of view of the system can be provided to meet the requirements of electronic products for large viewing angles.

f/EPD≤1.7;

Among them, f is the effective focal length of the camera module 10 and EPD is the entrance pupil diameter of the camera module 10. Specifically, f/EPD can be 1.60 or 1.61. When the above relationship is satisfied, the imaging of the image plane of the system can be made brighter, so that the system has the effect of a large aperture and a larger depth of field range, that is, a wider imaging depth, which is conducive to the user or the system to accurately identify and judge the distance. Near imaging screen. When it exceeds the range of the relational expression, it will be difficult to achieve the technical effect within the above-mentioned relational range.

-5<f1/f<0;

Among them, f1 is the focal length of the first lens L1, and f is the effective focal length of the camera module 10. Specifically, f1/f may be -4.20, -4.00, -3.50, -2.50, -2.00, -1.80, -1.60, or -1.50. The first lens L1 provides negative refractive power for the system, and when the above relationship is satisfied, the first lens L1 can capture the light that enters the system from a large angle, thereby expanding the field of view of the system, and at the same time making the system have a low Sensitivity and miniaturization characteristics. When it exceeds the range of the relational expression, it will be difficult to achieve the technical effect within the above-mentioned relational range.

-5＜f2/f＜-1;

Among them, f2 is the focal length of the second lens L2, and f is the effective focal length of the camera module 10. Specifically, f2/f may be -4.50, -4.30, -4.00, -3.00, -2.00, -1.80, -1.60, or -1.50. The second lens L2 provides negative refractive power for the system, and when the above relationship is satisfied, it is beneficial to increase the width of the light, so that the light incident from a large angle and refracted by the first lens L1 and the second lens L2 is expanded and filled with light. The pupil enables the light to be fully transmitted to the high-pixel imaging surface S17, thereby obtaining a wider field of view, which is beneficial to reflect the characteristics of the system with high pixels. When it exceeds the range of the relational expression, it will be difficult to achieve the technical effect within the above-mentioned relational range.

3.0≤D23/(1/|R2r|-1/|R3f|)<5.0;

Among them, D23 is the distance between the image side surface S4 of the second lens L2 and the object side surface S5 of the third lens L3 on the optical axis, R2r is the radius of curvature of the image side surface S4 of the second lens L2 at the optical axis, and R3f is the third lens. The radius of curvature of the object side surface S5 of the lens L3 at the optical axis. Specifically, D23/(1/|R2r|-1/|R3f|) may be 3.20, 3.40, 3.80, 4.00, 4.20, 4.40 or 4.50. When the above relationship is satisfied, the angle at which the chief ray of the peripheral field of view enters the imaging surface S17 of the system can be reduced, and the probability of ghosting can be reduced, and the generation of astigmatism can be easily suppressed. When the upper limit of the relational expression is exceeded, the distance between the second lens L2 and the third lens L3 is too large, which is not conducive to the direct support of the second lens L2 and the third lens L3, additional assembly mechanical parts are required, and it is also not conducive to tolerance sensitivity The difference between the image side surface S4 of the second lens L2 and the object side surface S5 of the third lens L3 is too large when it is lower than the lower limit of the relational expression, which easily leads to the image side surface of the second lens L2. S4 is too curved, and the object-side surface S5 of the third lens L3 tends to be flat. After the light is reflected by the image-side surface S6 of the third lens L3, it will then be reflected by the object-side surface S3 of the second lens L2 and converge to the imaging surface S17. Produce strong ghost image, which is not conducive to the improvement of image quality.

2＜f3/f＜5;

Among them, f3 is the focal length of the third lens L3, and f is the effective focal length of the camera module 10. Specifically, f3/f may be 2.50, 2.70, 3.00, 3.50, 4.00, 4.10, or 4.30. Since the incident light passes through the first lens L1 and the second lens L2 with negative refractive power, it is easy to produce a large curvature of field when the edge light enters the image surface. When the above relationship is satisfied, the third lens L3 will have Proper positive refractive power can help correct edge aberrations and improve imaging resolution. When the range of the relational expression is exceeded, the focal length of the third lens L3 is not sufficient to correct the curvature of field of the optical system 10, resulting in over-correction or under-correction of the optical system 10, thereby reducing the imaging resolution performance of the optical system 10.

0.3<(D46-D13)/f<1.5;

Among them, D13 is the distance between the object side S1 of the first lens L1 and the image side S6 of the third lens L3 on the optical axis, and D46 is the object side S7 of the fourth lens L4 and the image side S12 of the sixth lens L6 on the optical axis. The distance above, f is the effective focal length of the camera module 10. Specifically, (D46-D13)/f can be 1.15, 1.20, 1.25, 1.28, 1.30 or 1.35. When the above relationship is satisfied, it is beneficial to correct system aberrations, improve imaging resolution, and at the same time ensure that the system has a compact structure and meets the characteristics of miniaturization.

4<f56/f<15;

Among them, f56 is the combined focal length of the fifth lens L5 and the sixth lens L6, and f is the effective focal length of the camera module 10. Specifically, f56/f may be 5.50, 6.00, 7.00, 9.00, 10.00, 11.00, 12.00, 12.50, or 13.00. When the above relationship is satisfied, the fifth lens L5 and the sixth lens L6 have a proper positive refractive power as a whole, which is beneficial to correct system aberrations, reduce decentering sensitivity, and improve imaging resolution; at the same time, when the above relationship is satisfied, it can also reduce The system assembly sensitivity reduces the difficulty of lens manufacturing and lens assembly, thereby increasing the yield rate. When the upper limit of the relational expression is exceeded, the combined focal length of the fifth lens L5 and the sixth lens L6 is too long to provide sufficient refractive power, which is not conducive to the aberration correction of the optical system 10; and when the lower limit of the relational expression is lower, the optical system 10 The effective focal length is large, which is not conducive to the wide-angle design of the system.

Next, a more specific and detailed embodiment is used to describe the camera module 10 of the present application:

The first embodiment

1 and 2, in the first embodiment, the camera module 10 includes a first lens L1 with a negative refractive power, a second lens L2 with a negative refractive power, and a positive refractive power from the object side to the image side. The third lens L3, the stop STO, the fourth lens L4 with positive refractive power, the fifth lens L5 with positive refractive power, and the sixth lens L6 with negative refractive power. Figure 2 includes the longitudinal spherical aberration diagram (mm), astigmatism diagram (mm) and distortion diagram (%) of the camera module 10 in the first embodiment, where the astigmatism diagram and distortion diagram are at the wavelength of d light -587.56nm Graph. In addition, in the following embodiments, the ordinates of the astigmatism diagram and the distortion diagram represent half of the maximum angle of view of the camera module 10 in the horizontal direction.

The object side surface S1 of the first lens L1 is a concave surface, and the image side surface S2 is a concave surface.

The object side surface S3 of the second lens L2 is a concave surface, and the image side surface S4 is a concave surface.

The object side surface S5 of the third lens L3 is a convex surface, and the image side surface S6 is a concave surface.

The object side surface S7 of the fourth lens L4 is convex, and the image side surface S8 is convex.

The object side surface S9 of the fifth lens L5 is a convex surface, and the image side surface S10 is a convex surface.

The object side surface S11 of the sixth lens L6 is a concave surface, and the image side surface S12 is a concave surface.

Among them, the object side surface and the image side surface of the first lens L1 to the third lens L3 are spherical surfaces; the object side surface S7 and the image side surface S8 of the fourth lens L4 are aspheric surfaces; the object side surface S9 and the image side surface S10 of the fifth lens L5 Both are spherical surfaces; the object side surface S11 of the sixth lens L6 is spherical surface, and the image side surface S12 is aspherical surface. In addition, the image side surface S10 of the fifth lens L5 is cemented with the object side surface S11 of the sixth lens L6, so that the fifth lens L5 and the sixth lens L6 form a cemented lens. By making the fifth lens L5 and the sixth lens L6 form a cemented lens, Effectively reduce the assembly sensitivity of the system, reduce the difficulty of lens manufacturing and lens assembly, thereby increasing the yield. By matching the spherical and aspherical surface types of the lenses in the camera module 10, problems such as aberration and distortion of the field of view of the camera module 10 can be effectively solved, and the imaging quality can be improved.

The materials of the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, and the sixth lens L6 are all glass. At this time, since the glass lens has excellent optical characteristics, it is beneficial to improve the imaging quality of the camera module 10, and the glass lens is relatively less prone to aging, and can still maintain excellent optical performance in high or low temperature environments. Therefore, it is suitable for application in vehicle-mounted camera equipment and suitable for installation outside the vehicle body.

A filter L7 for filtering infrared light is also provided between the sixth lens L6 and the photosensitive element 110.

In the first embodiment, the camera module 10 satisfies the following relationships:

0≤Ym/[(1/2)FOVm*P]≤26; where Ym is half of the image height corresponding to the m° field of view of the camera module 10 in the horizontal direction, the unit of Ym is mm, and 0 <m≤100, FOVm is the m° field of view of the camera module 10 in the horizontal direction, and P is the size of the unit pixel on the photosensitive element 110.

In this embodiment and the following specific and detailed embodiments, the unit pixel has a square structure, and the size of the unit pixel is P=3 μm. It can also be said that the size of each pixel unit is 3 μm.

The following lists the average number of pixels corresponding to each degree of field of view when m=20, 40, 60, 80, and 100:

Y ₂₀ /[(1/2)FOV20*P]=23.87(Pixel/deg);

Y ₄₀ /[(1/2)FOV40*P]=23.23(Pixel/deg);

Y ₆₀ /[(1/2)FOV60*P]=22.19(Pixel/deg);

Y ₈₀ /[(1/2)FOV80*P]=20.81(Pixel/deg);

Y ₁₀₀ /[(1/2)FOV100*P]=19.20(Pixel/deg);

When the above-mentioned camera module 10 satisfies the structural conditions of each lens, it is beneficial to maintain a good imaging quality while having a large field of view. When the above-mentioned relationship is satisfied, the camera module 10 can reasonably adjust the angle of view per degree of the system. The corresponding number of pixels, while having a large viewing angle shooting range, there are enough pixels on the photosensitive surface corresponding to each degree of field of view to achieve clear imaging of the module, so that the camera module 10 is in the entire field of view It has high enough pixels and imaging resolution capabilities to provide the system with better imaging results.

Y ₁₀ /[(1/2)FOV10*P]=24(Pixel/deg); where Y ₁₀ is half of the image height corresponding to the 10° field of view of the camera module 10 in the horizontal direction, and Y ₁₀ The unit is mm, and FOV10 is the 10° field of view of the camera module 10 in the horizontal direction. When the above relationship is satisfied, the number of pixels corresponding to each degree of field of view within the central field of view of the system (within ±5° field of view in the horizontal direction, that is, within the range of 10° field of view in the horizontal direction) corresponding to the number of pixels Distribution, so that the system has high enough pixels and imaging resolution capabilities in the central field of view, so that important information in the center of the field of view can be clearly highlighted, and at the same time, the small field of view and telephoto can be displayed in the central field of view. The characteristics are reflected, the details of long-distance shooting are clearly presented, and the system provides better imaging effects.

(Y ₅₀ -Y ₁₀ )/[(1/2)(FOV50-FOV10)*P]=22(Pixel/deg); where Y ₅₀ corresponds to the 50° field of view of the camera module 10 in the horizontal direction Half of the image height of the _{camera module 10, Y 10} is the half of the image height corresponding to the 10° field of view of the camera module 10 in the horizontal direction, _{the units of Y 10} and Y ₅₀ are both mm, and FOV50 is the camera module 10 in the horizontal direction The above 50° field of view angle, FOV10 is the 10° field of view angle of the camera module 10 in the horizontal direction. When the above relationship is satisfied, the number of pixels corresponding to each degree of field of view within the range of the system's adjacent center field of view (ie within the range of ±5° field of view to ±25° field of view in the horizontal direction) can be reasonably allocated , So that the system has sufficiently high pixels and imaging resolution capabilities in the field of view area adjacent to the central field of view, so that important information adjacent to the center of the field of view can be clearly highlighted and provide better imaging effects for the system.

(Y ₁₀₀ -Y ₅₀ )/[(1/2)(FOV100-FOV50)*P]=16(Pixel/deg); where Y ₁₀₀ corresponds to the 100° field of view of the camera module 10 in the horizontal direction Y ₅₀ is the half of the image height corresponding to the 50° field of view of the camera module 10 in the horizontal direction, FOV100 is the 100° field of view of the camera module 10 in the horizontal direction, and FOV50 is the camera The 50° field of view of the module 10 in the horizontal direction. When the above relationship is satisfied, the number of pixels corresponding to each degree of field of view within the peripheral field of view of the system (that is, within the range of ±25° field of view to the maximum field of view in the horizontal direction) can be reasonably allocated to make the system There are sufficiently high pixels and imaging resolution capabilities in the edge field of view, so that the system can perform clear imaging at the large-angle edge field of view, and at the same time, the characteristics of the large field of view and wide shooting range are reflected in the edge field of view. The system provides better imaging results.

D34*100/TTL=7.64; where D34 is the distance from the image side surface S6 of the third lens L3 to the object side surface S7 of the fourth lens L4 on the optical axis, and TTL is the total optical length of the camera module 10. When the above relationship is satisfied, the light incident to the system is beneficial to fill the pupil, enhance the brightness and clarity of the imaging surface S17, and at the same time, it is beneficial to shorten the total length of the system, so that the system has the characteristics of compact structure and miniaturization.

f/tan(HFOV)=3.48 where f is the effective focal length of the camera module 10, HFOV is half of the maximum angle of view of the camera module 10 in the horizontal direction, and the unit of f is mm. When the above relationship is satisfied, a sufficient angle of view of the system can be provided to meet the requirements of electronic products for large viewing angles.

f/EPD=1.61; where f is the effective focal length of the camera module 10, and EPD is the entrance pupil diameter of the camera module 10. When the above relationship is satisfied, the imaging of the image plane of the system can be made brighter, so that the system has the effect of a large aperture and a larger depth of field range, that is, a wider imaging depth, which is conducive to the user or the system to accurately identify and judge the distance. Near imaging screen.

f1/f=-4.39; where f1 is the focal length of the first lens L1, and f is the effective focal length of the camera module 10. The first lens L1 provides negative refractive power for the system, and when the above relationship is satisfied, the first lens L1 can capture the light that enters the system from a large angle, thereby expanding the field of view of the system, and at the same time making the system have a low Sensitivity and miniaturization characteristics.

f2/f=-1.41; where f2 is the focal length of the second lens L2, and f is the effective focal length of the camera module 10. The second lens L2 provides negative refractive power for the system, and when the above relationship is satisfied, it is beneficial to increase the width of the light, so that the light incident from a large angle and refracted by the first lens L1 and the second lens L2 is expanded and filled with light. The pupil enables the light to be fully transmitted to the high-pixel imaging surface S17, thereby obtaining a wider field of view, which is beneficial to reflect the characteristics of the system with high pixels.

D23/(1/|R2r|-1/|R3f|)=3.08; where D23 is the distance on the optical axis between the image side surface S4 of the second lens L2 and the object side surface S5 of the third lens L3, and R2r is the second The curvature radius of the image side surface S4 of the lens L2 at the optical axis, and R3f is the curvature radius of the object side surface S5 of the third lens L3 at the optical axis. When the above relationship is satisfied, the angle at which the chief ray of the peripheral field of view enters the system imaging surface S17 can be reduced, and the probability of ghosting can be reduced, and the generation of astigmatism can be easily suppressed.

f3/f=2.43; where f3 is the focal length of the third lens L3, and f is the effective focal length of the camera module 10. Since the incident light passes through the first lens L1 and the second lens L2 with negative refractive power, it is easy to produce a large curvature of field when the edge light enters the image surface. When the above relationship is satisfied, the third lens L3 will have Proper positive refractive power can help correct edge aberrations and improve imaging resolution.

(D46-D13)/f=1.10; where D13 is the distance on the optical axis between the object side S1 of the first lens L1 and the image side S6 of the third lens L3, and D46 is the object side S7 and the second lens of the fourth lens L4. The distance between the image side surface S12 of the six lens L6 and the optical axis, and f is the effective focal length of the camera module 10. When the above relationship is satisfied, it is beneficial to correct system aberrations, improve imaging resolution, and at the same time ensure that the system has a compact structure and meets the characteristics of miniaturization.

f56/f=8.15; where f56 is the combined focal length of the fifth lens L5 and the sixth lens L6, and f is the effective focal length of the camera module 10. When the above relationship is satisfied, the fifth lens L5 and the sixth lens L6 have a proper positive refractive power as a whole, which is beneficial to correct system aberrations, reduce decentering sensitivity, and improve imaging resolution; at the same time, when the above relationship is satisfied, it can also reduce The system assembly sensitivity reduces the difficulty of lens manufacturing and lens assembly, thereby increasing the yield rate.

While the above-mentioned camera module 10 has a large viewing angle and shooting range, there are enough pixels on the photosensitive surface corresponding to each degree of field of view to realize the clear imaging of the module, so that the camera module 10 has enough in the entire field of view. High pixel and imaging resolution capabilities, so as to provide better imaging results for the system.

In addition, the lens parameters of the camera module 10 are given in Table 1 and Table 2. K in Table 2 is the conic coefficient, and Ai is the coefficient corresponding to the higher order term of the i-th term in the aspheric surface formula. The elements from the object surface to the image surface (imaging surface S17) are arranged in the order of the elements from top to bottom in Table 1. Among them, the object located on the object surface can be formed on the imaging surface S17 of the camera module 10 Clear imaging. The surface numbers 1 and 2 respectively represent the object side S1 and the image side S2 of the first lens L1, that is, in the same lens, the surface with the smaller surface number is the object side, and the surface with the larger surface number is the image side. The Y radius in Table 1 is the radius of curvature of the object side or image side of the corresponding surface number at the paraxial (or understood as on the optical axis). The first value in the "thickness" parameter column of the lens is the thickness of the lens on the optical axis, and the second value is the distance from the image side of the lens to the object side of the latter lens on the optical axis. The optical axes of the lenses in the embodiment of the present application are on the same straight line, and the straight line serves as the optical axis of the camera module 10. The “thickness” parameter value in the surface number 12 is the distance on the optical axis from the image side surface S12 of the sixth lens L6 to the object side surface S13 of the filter L7. The value of the “thickness” parameter corresponding to the surface number 20 of the protective glass L8 is the distance from the image side surface S16 of the protective glass L8 to the image surface (imaging surface S17) of the camera module 10 on the optical axis.

In the first embodiment, the effective focal length of the camera module 10 is f=4.15mm, the number of apertures FNO=1.61, the maximum angle of view in the horizontal direction FOV=100°, and the half of the maximum angle of view in the horizontal direction HFOV=50° , The total optical length TTL=24.00mm, the total optical length TTL is the distance from the object side S1 of the first lens L1 to the imaging surface S17 of the camera module 10 on the optical axis.

In addition, in the following embodiments (first, second, third, fourth, fifth, and sixth embodiments), the refractive index, Abbe number, and The focal lengths are all values at a wavelength of 587.56nm. In addition, the calculation of the relational expression and the lens structure of each embodiment are based on the lens parameters (such as Table 1, Table 2, Table 3, Table 4, etc.).

Table 1

Table 2

Second embodiment

3 and 4, in the second embodiment, the camera module 10 includes a first lens L1 with a negative refractive power, a second lens L2 with a negative refractive power, and a positive refractive power from the object side to the image side. The third lens L3, the stop STO, the fourth lens L4 with positive refractive power, the fifth lens L5 with positive refractive power, and the sixth lens L6 with negative refractive power. FIG. 4 includes the longitudinal spherical aberration diagram (mm), astigmatism diagram (mm) and distortion diagram (%) of the camera module 10 in the second embodiment, where the astigmatism diagram and distortion diagram are at the wavelength of d light -587.56nm Graph.

The object side surface S11 of the sixth lens L6 is a concave surface, and the image side surface S12 is a convex surface.

In addition, the fifth lens L5 and the sixth lens L6 form a cemented lens.

In addition, the lens parameters of the camera module 10 in the second embodiment are given in Tables 3 and 4, and the definitions of the structures and parameters can be obtained in the first embodiment, and will not be repeated here.

table 3

Table 4

The camera module 10 of this embodiment satisfies the following relationship:

The third embodiment

5 and 6, in the third embodiment, the camera module 10 includes a first lens L1 with a negative refractive power, a second lens L2 with a negative refractive power, and a positive refractive power from the object side to the image side. The third lens L3, the stop STO, the fourth lens L4 with positive refractive power, the fifth lens L5 with positive refractive power, and the sixth lens L6 with negative refractive power. FIG. 6 includes the longitudinal spherical aberration diagram (mm), astigmatism diagram (mm), and distortion diagram (%) of the camera module 10 in the third embodiment, where the astigmatism diagram and distortion diagram are at the wavelength of d light -587.56nm Graph.

The object side surface S3 of the second lens L2 is a convex surface, and the image side surface S4 is a concave surface.

In addition, the fifth lens L5 and the sixth lens L6 form a cemented lens.

In addition, the lens parameters of the camera module 10 in the third embodiment are given in Table 5 and Table 6, wherein the definition of each structure and parameter can be obtained in the first embodiment, and will not be repeated here.

table 5

Table 6

The camera module 10 of this embodiment satisfies the following relationship:

Fourth embodiment

7 and 8, in the fourth embodiment, the camera module 10 includes a first lens L1 with negative refractive power, a second lens L2 with negative refractive power, and a positive refractive power from the object side to the image side. The third lens L3, the stop STO, the fourth lens L4 with positive refractive power, the fifth lens L5 with positive refractive power, and the sixth lens L6 with negative refractive power. FIG. 8 includes the longitudinal spherical aberration diagram (mm), astigmatism diagram (mm) and distortion diagram (%) of the camera module 10 in the fourth embodiment, where the astigmatism diagram and distortion diagram are at the wavelength of d light -587.56nm Graph.

In addition, the fifth lens L5 and the sixth lens L6 form a cemented lens.

In addition, the lens parameters of the camera module 10 in the fourth embodiment are given in Table 7 and Table 8. The definition of each structure and parameter can be obtained in the first embodiment, and will not be repeated here.

Table 7

Table 8

The camera module 10 of this embodiment satisfies the following relationship:

Fifth embodiment

9 and 10, in the fifth embodiment, the camera module 10 includes a first lens L1 with negative refractive power, a second lens L2 with negative refractive power, and a positive refractive power from the object side to the image side. The third lens L3, the stop STO, the fourth lens L4 with positive refractive power, the fifth lens L5 with positive refractive power, and the sixth lens L6 with negative refractive power. FIG. 10 includes the longitudinal spherical aberration diagram (mm), astigmatism diagram (mm) and distortion diagram (%) of the camera module 10 in the fifth embodiment, where the astigmatism diagram and distortion diagram are at the wavelength of d light -587.56nm Graph.

In addition, the fifth lens L5 and the sixth lens L6 form a cemented lens.

In addition, the lens parameters of the camera module 10 in the fifth embodiment are given in Table 9 and Table 10. The definition of each structure and parameter can be obtained in the first embodiment, and will not be repeated here.

Table 9

Table 10

The camera module 10 of this embodiment satisfies the following relationship:

Sixth embodiment

11 and 12, in the sixth embodiment, the camera module 10 includes a first lens L1 with negative refractive power, a second lens L2 with negative refractive power, and a positive refractive power from the object side to the image side. The third lens L3, the stop STO, the fourth lens L4 with positive refractive power, the fifth lens L5 with positive refractive power, and the sixth lens L6 with negative refractive power. FIG. 12 includes the longitudinal spherical aberration diagram (mm), astigmatism diagram (mm) and distortion diagram (%) of the camera module 10 in the sixth embodiment, where the astigmatism diagram and distortion diagram are at the wavelength of d light -587.56nm Graph.

The object side surface S1 of the first lens L1 is a convex surface, and the image side surface S2 is a concave surface.

In addition, the fifth lens L5 and the sixth lens L6 form a cemented lens.

In addition, the lens parameters of the camera module 10 in the sixth embodiment are given in Table 11 and Table 12. The definition of each structure and parameter can be obtained in the first embodiment, and will not be repeated here.

Table 11

Table 12

The camera module 10 of this embodiment satisfies the following relationship:

In some embodiments, the distance between the photosensitive element 110 and each lens (the first lens L1 to the sixth lens L6) is relatively fixed. At this time, the camera module 10 is a fixed focus module. In other embodiments, a driving mechanism such as a voice coil motor can be provided to enable the photosensitive element 110 to move relative to each lens in the camera module 10 to achieve a focusing effect. Specifically, a coil electrically connected to the drive chip is provided on the lens barrel equipped with the above-mentioned lenses, and the camera module 10 is also provided with a magnet. The magnetic force between the coil and the magnet after energization is used to drive the lens barrel relative to each other. The photosensitive element 110 moves to achieve a focusing effect. In other embodiments, a similar driving mechanism can also be provided to drive part of the lens in the camera module 10 to move, so as to achieve the optical zoom effect.

Referring to FIG. 13, some embodiments of the present application further provide an electronic device 20, and the camera module 10 is applied to the electronic device 20 so that the electronic device 20 has a camera function. Specifically, the electronic device 20 includes a housing 210, and the camera module 10 is mounted on the housing 210. The housing 210 may be a circuit board, a middle frame, or other components. The electronic device 20 can be, but is not limited to, a smart phone, a smart watch, an e-book reader, a car camera, a monitoring device, a medical device (such as an endoscope), a tablet computer, a biometric device (such as a fingerprint recognition device or a pupil recognition device) Etc.), PDA (Personal Digital Assistant), drone, etc. Specifically, in some embodiments, the electronic device 20 is a smart phone. The smart phone includes a middle frame and a circuit board. The circuit board is disposed in the middle frame. The camera module 10 is installed in the middle frame of the smart phone, and the photosensitive element 110 therein is Electrically connected with the circuit board. By adopting the above-mentioned camera module 10, the electronic device 20 has a large viewing angle and shooting range, and at the same time, there are enough pixels in the field of view corresponding to each degree to realize the clear imaging of the module, so that the entire field of view has a sufficiently high Pixel and imaging resolution capabilities, so that the electronic device 20 has an excellent imaging effect.

Referring to FIG. 14, some embodiments of the present application also provide an automobile 30. At this time, when the electronic device 20 is an in-vehicle camera device, the electronic device 20 can be used as a front-view camera device, a rear-view camera device, or a side-view camera device of the automobile 30. Specifically, the car 30 includes a car body 310, and the housing 210 of the electronic device 20 is mounted on the car body 310. The electronic device 20 can be installed on the front side of the car body 310 (such as the air intake grille), the left front headlight, the right front headlight, the left rearview mirror, the right rearview mirror, the boot cover, the roof, etc. . Secondly, a display device can also be provided in the car 30, and the electronic device 20 is communicatively connected with the display device, so that the image obtained by the electronic device 20 on the car body 310 can be displayed on the display device in real time, so that the driver can obtain the car body A wider range of environmental information around 310 makes it more convenient and safe for drivers to drive and park. When multiple electronic devices 20 are provided to obtain scenes in different directions, the image information obtained by the electronic devices 20 can be synthesized and can be presented on the display device in the form of a top view.

Specifically, in some embodiments, the car 30 includes at least four electronic devices 20, and the electronic devices 20 are respectively installed on the front side (such as at the air intake grille) and the left side (such as at the left rearview mirror) of the vehicle body 310. , The right side (such as the right rearview mirror) and the rear side (such as the tail box cover) to construct the car surround view system. The car surround view system includes four (or more) electronic devices 20 installed on the front, rear, left, and right of the car body 310. Multiple electronic devices 20 can simultaneously collect the scene around the car 30, and then the image information is collected by the electronic device 20 and processed by the image. The unit performs steps such as distortion restoration, viewing angle conversion, image stitching, image enhancement, etc., and finally forms a seamless 360° panoramic top view around the car 30 and displays it on the display device. Of course, in addition to displaying a panoramic view, it can also display a single side view of any aspect. In addition, a ruler line corresponding to the displayed image can also be configured on the display device to facilitate the driver to accurately determine the position and distance of the obstacle.

By adopting the above-mentioned electronic device 20, the electronic device 20 can obtain wide-angle range shooting and clear imaging for the car 30, which can effectively reduce the blind area of the driver’s vision and improve the image quality, so that the driver can obtain more and clear cars. The road condition information on the periphery of the body can reduce the safety hazards of the car when changing lanes, parking, turning and other operations.

The "electronic device" used in the embodiments of the present invention may include, but is not limited to, being set to be connected via a wired line (such as via a public switched telephone network (PSTN), digital subscriber line, DSL), digital cable, direct cable connection, and/or another data connection/network) and/or via (for example, for cellular networks, wireless local area networks (WLAN), such as handheld digital video broadcasting (digital video) Broadcasting handheld, DVB-H) network digital TV network, satellite network, amplitude modulation-frequency modulation (AM-FM) broadcast transmitter, and/or another communication terminal) wireless interface to receive/transmit communication signals installation. An electronic device set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a "wireless terminal", and/or a "mobile terminal". Examples of mobile terminals include, but are not limited to satellite or cellular phones; personal communication system (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, and the Internet/ Personal digital assistant (PDA) with intranet access, web browser, notebook, calendar, and/or global positioning system (GPS) receiver; and conventional laptop and/or palmtop Receiver or other electronic device including a radio telephone transceiver.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply the pointed device or element It must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

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

In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. , Or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, it can be the internal connection of two components or the interaction relationship between two components, unless otherwise specified The limit. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present invention can be understood according to specific situations.

In the present invention, unless expressly stipulated and defined otherwise, the first feature “on” or “under” the second feature may be in direct contact with the first and second features, or the first and second features may be indirectly through an intermediary. touch. Moreover, the "above", "above" and "above" of the first feature on the second feature may mean that the first feature is directly above or diagonally above the second feature, or it simply means that the level of the first feature is higher than that of the second feature. The “below”, “below” and “below” of the second feature of the first feature may mean that the first feature is directly below or obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean specific features described in conjunction with the embodiment or example , Structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples and the features of the different embodiments or examples described in this specification without contradicting each other.

The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be considered as the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and their description is relatively specific and detailed, but they should not be understood as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

A camera module includes in turn from the object side to the image side:

A first lens with negative refractive power, the image side surface of the first lens is concave;

A second lens with negative refractive power, the image side surface of the second lens is concave;

The third lens with positive refractive power;

The fourth lens with positive refractive power;

A fifth lens with positive refractive power, the object side of the fifth lens is convex, and the image side is convex;

A sixth lens with negative refractive power, the object side of the sixth lens is concave;

Photosensitive element

The camera module further includes an aperture, which is arranged on the object side of the fourth lens;

And the camera module satisfies the following relationship:

0≤Ym/[(1/2)FOVm*P]≤26;

Wherein, Ym is the half of the image height corresponding to the m° field of view of the camera module in the horizontal direction, and 0<m≤100, and FOVm is the m° field of view of the camera module in the horizontal direction , P is the size of a unit pixel on the photosensitive element.
The camera module of claim 1, wherein the following relationship is satisfied:

21≤Y 10 /[(1/2)FOV10*P]≤26;

Wherein, Y 10 is half of the image height corresponding to the 10° field of view of the camera module in the horizontal direction, and FOV 10 is the 10° field of view of the camera module in the horizontal direction.
The camera module of claim 1, wherein the following relationship is satisfied:

20≤(Y 50 -Y 10 )/[(1/2)(FOV50-FOV10)*P]≤26;

Wherein, Y 50 is the half of the image height corresponding to the 50° field of view of the camera module in the horizontal direction, and Y 10 is the image height corresponding to the 10° field of view of the camera module in the horizontal direction Half, FOV50 is the 50° field of view of the camera module in the horizontal direction, and FOV10 is the 10° field of view of the camera module in the horizontal direction.
The camera module of claim 1, wherein the following relationship is satisfied:

9≤(Y 100 -Y 50 )/[(1/2)(FOV100-FOV50)*P]≤20;

Wherein, Y 100 is the half of the image height corresponding to the 100° field of view of the camera module in the horizontal direction, and Y 50 is the image height corresponding to the 50° field of view of the camera module in the horizontal direction Half, FOV100 is the 100° field of view of the camera module in the horizontal direction, and FOV50 is the 50° field of view of the camera module in the horizontal direction.
The camera module of claim 1, wherein the following relationship is satisfied:

6＜D34*100/TTL＜16;

Wherein, D34 is the distance from the image side of the third lens to the object side of the fourth lens on the optical axis, and TTL is the total optical length of the camera module.
The camera module of claim 1, wherein the following relationship is satisfied:

3.0<f/tan(HFOV)<4.2;

Wherein, f is the effective focal length of the camera module, HFOV is half of the maximum field angle of the camera module in the horizontal direction, and the unit of f is mm.
The camera module of claim 1, wherein the following relationship is satisfied:

f/EPD≤1.7;

Wherein, f is the effective focal length of the camera module, and EPD is the entrance pupil diameter of the camera module.
The camera module of claim 1, wherein the following relationship is satisfied:

-5<f1/f<0;

Wherein, f1 is the focal length of the first lens, and f is the effective focal length of the camera module.
The camera module of claim 1, wherein the following relationship is satisfied:

-5＜f2/f＜-1;

Wherein, f2 is the focal length of the second lens, and f is the effective focal length of the camera module.
The camera module of claim 1, wherein the following relationship is satisfied:

3.0≤D23/(1/|R2r|-1/|R3f|)<5.0;

Wherein, D23 is the distance between the image side surface of the second lens and the object side surface of the third lens on the optical axis, R2r is the radius of curvature of the image side surface of the second lens at the optical axis, and R3f is the The radius of curvature of the object side surface of the third lens at the optical axis.
The camera module of claim 1, wherein the following relationship is satisfied:

2＜f3/f＜5;

Wherein, f3 is the focal length of the third lens, and f is the effective focal length of the camera module.
The camera module of claim 1, wherein the following relationship is satisfied:

0.3<(D46-D13)/f<1.5;

Wherein, D13 is the distance between the object side of the first lens and the image side of the third lens on the optical axis, and D46 is the distance between the object side of the fourth lens and the image side of the sixth lens on the optical axis. The distance on, f is the effective focal length of the camera module.
The camera module of claim 1, wherein the following relationship is satisfied:

4<f56/f<15;

Wherein, f56 is the combined focal length of the fifth lens and the sixth lens, and f is the effective focal length of the camera module.
The camera module according to any one of claims 1 to 13, wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, and the The object side surface and/or at least one image side surface of at least one of the sixth lenses are aspherical.
The camera module according to any one of claims 1 to 13, wherein the image side surface of the fifth lens is cemented with the object side surface of the sixth lens.
An electronic device, comprising a housing and the camera module according to any one of claims 1 to 15, and the camera module is arranged in the housing.
An automobile comprising a vehicle body and the electronic device according to claim 16, the electronic device being arranged on the vehicle body.