WO2021189463A1

WO2021189463A1 - Optical imaging system, imaging module, electronic device and driving device

Info

Publication number: WO2021189463A1
Application number: PCT/CN2020/081818
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: 2020-03-27
Filing date: 2020-03-27
Publication date: 2021-09-30

Abstract

Provided is an optical imaging system. The optical imaging system (100) sequentially comprises, from an object side to an image side along an optical axis, a first lens group having a negative refractive power; a second lens group having a positive refractive power; a third lens group having a positive refractive power; a fourth lens group having a positive refractive power; and a diaphragm arranged on the object side of the third lens group. According to the optical imaging system (100), the lenses in the system are divided into groups such that the system can achieve both a wide viewing angle and a high resolution capability, and also has the characteristic of miniaturization. An imaging module comprising the optical imaging system, and an electronic device and a driving device comprising the imaging module are further provided.

Description

Optical imaging system, imaging module, electronic device and driving device

Technical field

This application relates to the field of optical imaging technology, in particular to an optical imaging system, imaging module, electronic device and driving device.

Background technique

In recent years, with the development of in-vehicle technology, driving assistance systems, driving recorders, and reversing cameras have increasingly higher application requirements for in-vehicle cameras. Not only are the cameras required to have the characteristics of miniaturization and light weight, but also require them to have Higher pixel image quality.

However, the pixel quality of the image captured by the traditional on-board camera is low, and the above-mentioned on-board system or device cannot accurately judge the environment information around the vehicle in real time and prompt the driver to make timely warning or evasion. Therefore, there is certain driving. risk.

Summary of the invention

According to various embodiments of the present application, an optical imaging system is provided.

An optical imaging system, which includes in order from the object side to the image side along the optical axis:

The first lens group with negative refractive power;

A second lens group with positive refractive power;

The third lens group with positive refractive power;

A fourth lens group with positive refractive power; and,

The diaphragm is provided on the object side of the third lens group.

An imaging module includes the optical imaging system described in the above embodiment and a photosensitive element, and the photosensitive element is arranged on the image side of the optical imaging system.

An electronic device includes a housing and the imaging module described in the above embodiments, and the imaging module is installed on the housing.

A driving device includes a vehicle body and the imaging module described in the above embodiments, and the imaging module is provided on the vehicle body to obtain environmental information around the vehicle body.

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

Description of the drawings

In order to better describe and explain the embodiments or examples of those 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 or examples, and the best mode of these inventions currently understood.

Fig. 1 shows a schematic structural diagram of an optical imaging system according to Embodiment 1 of the present application;

Fig. 2 respectively shows a longitudinal spherical aberration curve, an astigmatism curve and a distortion curve of the optical imaging system of Embodiment 1;

FIG. 3 shows a schematic structural diagram of an optical imaging system according to Embodiment 2 of the present application;

4 shows the longitudinal spherical aberration curve, astigmatism curve and distortion curve of the optical imaging system of Embodiment 2 respectively;

FIG. 5 shows a schematic structural diagram of an optical imaging system according to Embodiment 3 of the present application;

Fig. 6 respectively shows a longitudinal spherical aberration curve, an astigmatism curve and a distortion curve of the optical imaging system of Embodiment 3;

FIG. 7 shows a schematic structural diagram of an optical imaging system according to Embodiment 4 of the present application;

FIG. 8 respectively shows a longitudinal spherical aberration curve diagram, an astigmatism curve diagram, and a distortion curve diagram of the optical imaging system of Embodiment 4;

FIG. 9 shows a schematic structural diagram of an optical imaging system according to Embodiment 5 of the present application;

FIG. 10 respectively shows a longitudinal spherical aberration curve diagram, an astigmatism curve diagram, and a distortion curve diagram of the optical imaging system of Embodiment 5;

FIG. 11 shows a schematic diagram of an imaging module according to an embodiment of the present application;

FIG. 12 shows a schematic diagram of a driving device using an imaging module according to an embodiment of the present application;

FIG. 13 shows a schematic diagram of an electronic device applying an imaging module according to an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solutions, and advantages of this application clearer and clearer, the following further describes the application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or a central element may also exist. 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 "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only, and are not meant to be the only embodiments.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of this application. The terms used in the specification of the application herein are only for the purpose of describing specific embodiments, and are not intended to limit the application. As used herein, the term "and/or" includes any and all combinations of one or more related listed items.

In this specification, expressions such as first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any restriction on the feature. Therefore, without departing from the teachings of the present application, the first lens discussed below may also be referred to as a second lens or a third lens. For ease of description, the shape of the spherical or aspherical surface shown in the drawings is shown by way of example. That is, the shape of the spherical surface or the aspheric surface is not limited to the shape of the spherical surface or the aspheric surface shown in the drawings. The drawings are only examples and are not drawn strictly to scale.

In this specification, the space on the side of the object relative to the optical element is called the object side of the optical element. Correspondingly, the space on the side of the object relative to the optical element is called the image of the optical element. side. The surface of each lens closest to the object is called the object side, and the surface of each lens closest to the imaging surface is called the image side. And define the positive direction of the distance from the object side to the image side.

In addition, in the following description, if the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least near the optical axis; if the lens surface is concave and the position of the concave surface is not defined, it means The lens surface is concave at least near the optical axis. The near optical axis here refers to the area near the optical axis.

The features, principles and other aspects of the present application will be described in detail below.

Please refer to FIG. 1, FIG. 3, FIG. 5, FIG. 7 and FIG. Specifically, the optical imaging system includes four lens groups, followed by a first lens group with negative refractive power, a second lens group with positive refractive power, a third lens group with positive refractive power, and a lens group with positive refractive power. The fourth lens group. The four lens groups are arranged in order from the object side to the image side along the optical axis, and the imaging surface of the optical imaging system is located on the image side of the fourth lens group. The optical imaging system also includes a diaphragm, which is arranged on the object side of the third lens group to better control the size of the incident light beam and improve the imaging quality of the optical imaging system.

By grouping the lenses in the optical imaging system, it is beneficial to eliminate the aberrations inside each lens group. At the same time, it can also realize the mutual correction of the aberrations between the lens groups, so as to better correct the aberrations of the optical imaging system and improve the imaging. Quality; In addition, grouping the lenses is also conducive to anti-shake driving of different lens groups, thereby further ensuring the image quality.

Specifically, the first lens group includes a first lens with negative refractive power and a second lens with positive refractive power in sequence from the object side to the image side along the optical axis. Wherein, the object side surface and the image side surface of the first lens are both concave surfaces, the object side surface of the second lens is convex, and the image side surface is flat.

Setting the first lens as a negative lens can provide negative refractive power for the system, which is conducive to allowing light incident at a large angle to enter the system and focus on the imaging surface, thereby achieving stable imaging; and setting the object side of the first lens to The concave surface can reduce the formation of stray light in the system and reduce the chance of ghosting.

Setting the second lens as a positive lens can provide the system with positive refractive power, so that the light can smoothly transition or converge to the rear lens, and it is also beneficial to correct part of the aberrations generated by the first lens, so that the system has a higher Setting the object side surface of the second lens as a convex surface and the image side surface as a flat surface is beneficial to reduce the tolerance sensitivity of the system, thereby improving the assembly yield and reducing the production cost.

The second lens group includes a third lens with negative refractive power and a fourth lens with positive refractive power in sequence from the object side to the image side along the optical axis. Wherein, the image side surface of the third lens and the object side surface of the fourth lens are cemented, and the object side surface and the image side surface of the third lens are both concave surfaces, and the object side surface and the image side surface of the fourth lens are both convex surfaces.

By reasonably setting the refractive power and surface shape of the third lens and the fourth lens, it is beneficial to prevent the excessive correction of the second lens, and further focus the light to the imaging surface to ensure the imaging quality. Further, cementing the third lens and the fourth lens to form a cemented lens can make the overall structure of the optical imaging system more compact, and is beneficial to correct aberrations. It can achieve a balance between reducing the size of the lens and improving the resolution of the lens, and at the same time It can also reduce the tolerance sensitivity problems such as tilt or eccentricity of the lens during the assembly process, and improve the assembly yield of the lens.

As known by those skilled in the art, the discrete lenses at the turning points of light are easily sensitive due to processing errors and/or assembly errors, and the use of cemented lenses can effectively reduce the sensitivity of the lens. The cemented lens used in this application can not only effectively reduce the sensitivity of the lens and shorten the overall length of the lens, but also can share the correction of the overall chromatic aberration and aberration of the lens, and improve the resolution capability of the optical imaging system. Further, the cemented lens may include a lens with negative refractive power and a lens with positive refractive power. For example, the fourth lens has positive refractive power and the third lens has negative refractive power.

The third lens group includes a fifth lens with positive refractive power, a sixth lens with positive refractive power, and a seventh lens with negative refractive power in sequence from the object side to the image side along the optical axis. Among them, the object side and image side of the fifth lens are convex, the object side of the sixth lens is convex near the optical axis, the image side is convex near the optical axis, the seventh lens is convex, and the image side is concave .

By reasonably setting the refractive power and surface shape of the fifth, sixth, and seventh lens, the third lens group can have positive refractive power as a whole, which is conducive to shrinking the light beam and avoiding the light beam passing through the diaphragm to be transmitted to the effective pixel area of the imaging surface It also helps to correct system aberrations, reduce eccentricity sensitivity, and improve the imaging resolution of the system. In addition, it can also reduce the assembly sensitivity of the system and solve the problem of lens manufacturing and processing. The problem of lens assembly improves production yield.

The fourth lens group includes an eighth lens with positive refractive power. The eighth lens has a convex surface near the optical axis on the object side and a concave surface near the optical axis on the image side.

Setting the eighth lens as a positive lens can provide positive refractive power for the system, thereby reducing the incidence angle of the chief ray of light on the photosensitive element, increasing the photosensitive performance of the photosensitive element, and improving the imaging resolution of the system. Conducive to miniaturization of the system.

Specifically, the diaphragm is arranged between the second lens group and the third lens group, that is, between the fourth lens and the fifth lens. The diaphragm includes an aperture diaphragm and a field diaphragm. Preferably, the diaphragm is an aperture diaphragm. The aperture stop can be located on the surface of the lens (for example, the object side and the image side) and form an functional relationship with the lens, for example, by coating a light-blocking coating on the surface of the lens to form an aperture stop on the surface; or by clamping The holder fixedly clamps the surface of the lens, and the holder structure on the surface can limit the width of the imaging beam of the object point on the axis, thereby forming an aperture stop on the surface.

When the above-mentioned optical imaging system is used for imaging, the light emitted or reflected by the subject enters the optical imaging system from the object side, and passes through the first lens, the second lens, the third lens, the fourth lens, and the fifth lens in sequence , The sixth lens, the seventh lens and the eighth lens finally converge on the imaging surface.

The above-mentioned optical imaging system, by selecting an appropriate number of lenses and reasonably distributing the refractive power, surface shape and effective focal length of each lens, can improve the pixel image quality of the optical imaging system while taking into account its wide-angle shooting performance. It can capture scene details in a large range and accurately; in addition, the optical imaging system also has a miniaturized structure, which is convenient to adapt to thin and light electronic products.

In an exemplary embodiment, the optical imaging system satisfies the following relationship: -5<f12/f<0; where f12 represents the combined focal length of the first lens and the second lens, and f represents the effective focal length of the optical imaging system. f12/f can be -4.5, -4.4, -4.3, -4.2, -4.1, -4, -3, -2, or -1. When satisfying the above relationship, by rationally configuring the combined focal lengths of the first lens and the second lens, it is beneficial to enable light incident at a large angle to enter the system, thereby expanding the field of view of the optical imaging system and reducing the sensitivity of the system , Realize the miniaturization of the system. When f12/f is greater than or equal to 0, it cannot provide negative refractive power for the system, which is not conducive to wide-angle. When f12/f is less than or equal to -5, it cannot provide sufficient negative refractive power for the system, which is not conducive to reducing the system. Sensitivity is also not conducive to miniaturization.

In an exemplary embodiment, the optical imaging system satisfies the following relationship:

9mm＜(sag S6)*f/(f3+f4)＜15mm; where sag S6 represents the vector height of the cemented surface of the third lens and the fourth lens, f3 represents the effective focal length of the third lens, and f4 represents the Effective focal length, f represents the effective focal length of the optical imaging system. (sag S6)*f/(f3+f4) can be 9.5mm, 10mm, 10.5mm, 11mm, 11.5mm, 12mm, 12.5mm, 13mm or 14mm. Through the above relationship, the degree of curvature of the bonding surface of the third lens and the fourth lens can be limited, avoiding the bending of the bonding surface, thereby reducing the difficulty of the bonding process of the bonding surface, and also helping to reduce the assembly sensitivity of the system and improve the production yield; In addition, by properly configuring the effective focal lengths of the third lens and the fourth lens, it is helpful to further correct the aberrations of the system and improve the imaging resolution capability of the system.

1≤CT4/CT3<2.5; where CT3 represents the thickness of the third lens on the optical axis, and CT4 represents the thickness of the fourth lens on the optical axis. CT4/CT3 can be 1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.2, or 2.4. When the above relationship is satisfied, the central thickness values of the third lens and the fourth lens can be reasonably configured, which is beneficial to the bonding of the third lens and the fourth lens, and can also correct the system aberrations and improve the imaging quality. When CT4/CT3 is higher than the upper limit or lower than the lower limit, it is easy to cause the center thickness of the third lens or the fourth lens to be too large, which is not conducive to lens cementation, and is not conducive to correcting system aberrations.

0<f567/f<2.5; where f567 represents the combined focal length of the fifth lens, the sixth lens, and the seventh lens, and f represents the effective focal length of the optical imaging system. f567/f can be 0.5, 0.8, 1, 1.5, 1.7, 1.9, 2.0, 2.05, 2.1, 2.2, or 2.4. When the above relationship is satisfied, the fifth lens, the sixth lens and the seventh lens as a whole can provide positive refractive power for the system, thereby conducive to shrinking the light beam, and avoiding the light beam passing through the diaphragm to be transmitted to the area outside the effective pixel area and reducing the image pixel ;At the same time, it is also beneficial to correct system aberrations, reduce eccentricity sensitivity, and improve the imaging resolution of the system; in addition, it can also reduce the assembly sensitivity of the system, solve the problem of lens manufacturing and lens assembly, and improve production Yield. When f567/f is less than or equal to 0, the third lens group cannot provide positive refractive power for the system and cannot shrink the beam; when f567/f is greater than or equal to 2.5, it is difficult for the third lens group to ensure sufficient refractive power. It is easy to cause part of the light beam to pass to areas outside the effective pixel area to reduce image pixels, and it is also not conducive to correcting system aberrations and reducing system sensitivity.

In an exemplary embodiment, the optical imaging system satisfies the following relationship: 6<f6/CT6<13; where f6 represents the effective focal length of the sixth lens, and CT6 represents the thickness of the sixth lens on the optical axis. f6/CT6 can be 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, or 12. When the above relationship is satisfied, the sixth lens is set as a positive lens, which can provide positive refractive power for the system to correct the chromatic aberration of the system and reduce the sensitivity of eccentricity, which is beneficial to correct the aberration of the system and improve the imaging quality, while also ensuring the system The miniaturization. When f6/CT6 is less than or equal to 6, the center thickness of the sixth lens is large, which is not conducive to the miniaturization of the system; when f6/CT6 is greater than or equal to 13, the sixth lens cannot be guaranteed to have sufficient positive refractive power, which is not conducive to Correct system aberrations and reduce eccentric sensitivity.

In an exemplary embodiment, the optical imaging system satisfies the following relationship: 8<f8/CT8<13; where f8 represents the effective focal length of the eighth lens, and CT8 represents the thickness of the eighth lens on the optical axis. f8/CT8 can be 9, 9.5, 10, 10.5, 11, 11.5, or 12. When the above relationship is satisfied, the eighth lens is set as a positive lens, which can provide positive refractive power for the system, thereby helping to reduce the chief ray incident angle on the photosensitive element, increase the photosensitive performance of the photosensitive element, and thereby improve the imaging resolution of the system. It is also conducive to miniaturization of the system. When f8/CT8 is less than or equal to 8, the center thickness of the eighth lens is large, which is not conducive to the miniaturization of the system; when f8/CT8 is greater than or equal to 13, the eighth lens cannot be guaranteed to have sufficient positive refractive power, which is not conducive to Reducing the incidence angle of the chief ray on the photosensitive element makes the photosensitive performance of the photosensitive element lower, which is not conducive to improving the imaging quality of the image.

-22mm<R7f*f/f7<-15mm; where R7f represents the radius of curvature of the object side of the seventh lens at the optical axis, f represents the effective focal length of the optical imaging system, and f7 represents the effective focal length of the seventh lens. R7f*f/f7 can be -21.5mm, -21mm, -20mm, -19mm, -18.5mm, -18mm, -17mm, -16.5mm, or -16mm. When the above relationship is satisfied, the radius of curvature of the seventh lens object side at the optical axis and the effective focal length of the optical imaging system can be reasonably configured, and when the lower limit of the above relationship is satisfied, it is beneficial to optimize aberrations and improve the resolution of the system; When the upper limit of the above-mentioned relational expression is satisfied, the object side of the seventh lens can be prevented from being bent to increase the probability of ghosting.

0.4＜∑CT/TTL＜0.7; where ∑CT represents the sum of the thickness of the first lens to the eighth lens on the optical axis, and TTL represents the distance from the object side of the first lens to the imaging surface of the optical imaging system on the optical axis distance. ΣCT/TTL can be 0.5, 0.54, 0.58, 0.6, 0.62, 0.64, 0.66, or 0.68. When the above relationship is satisfied, the center thickness of each lens can be reasonably configured, which is beneficial to shorten the total length of the system and achieve miniaturization. When the total length of the system is constant, if ΣCT/TTL is higher than the upper limit, the total thickness of the lens is larger, which is not conducive to the lightening of the system; if ΣCT/TTL is lower than the lower limit, the total thickness of the lens is smaller and adjacent If the air gap between the lenses is too large, it is easy to increase the assembly sensitivity of the system, thereby reducing the yield and increasing the temperature sensitivity of the optical system, resulting in a decrease in the imaging clarity of the system in a high and low temperature environment.

5mm<ImgH/tan(FOV/2)<8mm; where ImgH represents half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging system, and FOV represents the diagonal field angle of the optical imaging system. ImgH/tan(FOV/2) can be 5.5mm, 6mm, 6.5mm, 6.9mm, 7mm, 7.1mm, 7.2mm or 7.5mm. When satisfying the above relationship, it is conducive to the wide-angle of the system, so that a larger field of view can be obtained while avoiding excessive distortion and improving the imaging quality at the wide-angle end. When ImgH/tan(FOV/2) is lower than the lower limit or higher than the upper limit, it is difficult to strike a balance between obtaining a larger field of view range and avoiding larger distortion.

0.8<EPD/ImgH<1.3; where EPD represents the entrance pupil diameter of the optical imaging system, and ImgH represents half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging system. EPD/ImgH can be 0.85, 0.9, 0.95, 0.99, 1.05, 1.1, 1.15, 1.2, or 1.25. By satisfying the upper limit of the above relationship, it is beneficial to increase the entrance pupil diameter of the system, so that the unit area of the effective pixel area of the imaging surface can receive more light, thereby increasing the brightness of the image surface and improving the imaging resolution of the system; by satisfying the above relationship The lower limit of the formula is beneficial to increase the area of the effective pixel area of the imaging surface, increase the number of pixels on the image surface, and realize the high resolution analysis characteristics of the system.

In an exemplary embodiment, among the first lens to the sixth lens, the object side surface and/or the image side surface of at least one lens are aspherical. Through the above method, the flexibility of lens design can be improved, aberration can be corrected effectively, and the imaging quality of the optical imaging system can be improved. It should be noted that the surface of each lens in the optical imaging system can also be any combination of spherical and aspherical surfaces, and not necessarily all spherical surfaces or all aspherical surfaces.

In an exemplary embodiment, the material of each lens in the optical imaging system may be glass or plastic. The plastic lens can reduce the weight and production cost of the optical imaging system, while the glass lens can make the optical imaging system. It has good temperature tolerance and excellent optical performance. Further, when used in an on-vehicle system, the material of each lens is preferably glass. It should be noted that the material of each lens in the optical imaging system can also be any combination of glass and plastic, and not necessarily all glass or plastic.

In an exemplary embodiment, the optical imaging system further includes an infrared filter. The infrared filter is set on the image side of the fourth lens group (that is, the eighth lens), used to filter incident light, specifically to isolate infrared light, prevent infrared light from being absorbed by the photosensitive element, thereby avoiding the color of infrared light on normal images It affects the clarity and improves the imaging quality of the optical imaging system.

In an exemplary embodiment, the optical imaging system may further include a protective glass. The protective glass is arranged on the image side of the infrared filter to protect the photosensitive element, and at the same time, it can also prevent the photosensitive element from being contaminated with dust and further ensure the image quality. It should be pointed out that in the vehicle-mounted system, since each lens in the optical imaging system is preferably a glass lens, in other embodiments, in order to reduce the weight of the system or reduce the total length of the system, it is also possible to choose not to provide a protective glass. This application There is no restriction on this.

The optical imaging system of the above-mentioned embodiment of the present application may use multiple lenses, for example, the above-mentioned eight lenses. By reasonably distributing the focal length, refractive power, surface shape, thickness of each lens, and the on-axis distance between each lens, it is possible to ensure that the above-mentioned optical imaging system has a small total length, a lighter weight, and a high imaging resolution. With a larger aperture (FNO can be 1.65) and a larger field of view, it can better meet the application requirements of lightweight electronic devices such as lenses for vehicle-mounted auxiliary systems, mobile phones, and tablets. However, those skilled in the art should understand that without departing from the technical solution claimed in this application, the number of lenses constituting the optical imaging system can be changed to obtain the various results and advantages described in this specification.

Specific examples of the optical imaging system applicable to the above-mentioned embodiments will be further described below with reference to the accompanying drawings.

Example 1

Hereinafter, the optical imaging system 100 of Embodiment 1 of the present application will be described with reference to FIGS. 1 to 2.

FIG. 1 shows a schematic structural diagram of an optical imaging system 100 of Embodiment 1. As shown in FIG. As shown in FIG. 1, the optical imaging system 100 includes a first lens group, a second lens group, a third lens group, and a fourth lens group in order from the object side to the image side along the optical axis, and an imaging surface S19. Among them, the first lens group includes a first lens L1 and a second lens L2, the second lens group includes a third lens L3 and a fourth lens L4, and the third lens group includes a fifth lens L5, a sixth lens L6, and a seventh lens. L7, the fourth lens group includes an eighth lens L8.

Specifically, the first lens L1 has a negative refractive power, and the object side surface S1 and the image side surface S2 are both spherical surfaces, wherein the object side surface S1 is a concave surface, and the image side surface S2 is a concave surface.

The second lens L2 has a positive refractive power, the object side surface S3 is a spherical surface, the image side surface S4 is a flat surface, and the object side surface S3 is a convex surface.

The third lens L3 has a negative refractive power, and the object side surface S5 and the image side surface S6 are both spherical surfaces, wherein the object side surface S5 is a concave surface, and the image side surface S6 is a concave surface.

The fourth lens L4 has a positive refractive power, and the object side surface S7 and the image side surface S8 are both spherical surfaces, wherein the object side surface S7 is a convex surface, and the image side surface S8 is a convex surface.

The fifth lens L5 has a positive refractive power, and the object side surface S9 and the image side surface S10 are both spherical surfaces, wherein the object side surface S9 is a convex surface, and the image side surface S10 is a convex surface.

The sixth lens L6 has a positive refractive power, and the object side surface S11 and the image side surface S12 are both aspherical, wherein the object side surface S11 is a convex surface near the optical axis, and the image side surface S12 is a convex surface near the optical axis.

The seventh lens L7 has a negative refractive power, and the object side surface S13 and the image side surface S14 are both spherical surfaces, wherein the object side surface S13 is a convex surface, and the image side surface S14 is a concave surface.

The eighth lens L8 has a positive refractive power, and the object side surface S15 and the image side surface S16 are both aspherical, wherein the object side surface S15 is a convex surface near the optical axis, and the image side surface S16 is a concave surface near the optical axis.

Among them, the image side surface S6 of the third lens L3 and the object side surface S7 of the fourth lens L4 are cemented to form a cemented lens, so that the overall structure of the optical imaging system 100 is more compact, and the tilt or eccentricity of the lens during the assembly process is reduced. Tolerance sensitivity issues improve the lens assembly yield.

Setting the object side and image side of the sixth lens L6 and the eighth lens L8 to be aspherical, which is helpful to correct aberrations and solve the problem of image distortion, and can also make the lens smaller, thinner and flatter Therefore, an excellent optical imaging effect is achieved, and the optical imaging system 100 has the characteristics of miniaturization.

The materials of the first lens L1 to the sixth lens L8 are all glass, and the use of glass lenses can enable the optical imaging system 100 to have better temperature tolerance characteristics and excellent optical performance, thereby further ensuring the imaging quality.

A stop STO is also provided between the second lens group and the third lens group (that is, between the fourth lens L4 and the fifth lens L5) to limit the size of the incident light beam and further improve the imaging quality of the optical imaging system 100. The optical imaging system 100 further includes a filter 110 provided on the image side of the eighth lens L8 and having an object side surface S17 and an image side surface S18. The light from the object OBJ sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19. Further, the filter 110 is an infrared filter, which is used to filter the infrared light in the external light incident to the optical imaging system 100 to avoid the distortion of the imaging color. Specifically, the material of the filter 110 is glass.

Table 1 shows the surface type, radius of curvature, thickness, material, refractive index, Abbe number (ie, dispersion coefficient), and effective focal length of the lens of the optical imaging system 100 of Example 1, where the radius of curvature, thickness, The unit of the effective focal length of the lens is millimeter (mm). In addition, taking the first lens L1 as an example, the first value in the "thickness" parameter column of the first lens L1 is the thickness of the lens on the optical axis, and the second value is the direction from the image side to the image side of the lens. The distance from the object side of the latter lens on the optical axis; the value of the stop ST0 in the "thickness" parameter column is from the stop ST0 to the apex of the object side of the latter lens (the apex refers to the intersection of the lens and the optical axis) in the light The distance on the axis, we default that the direction from the object side of the first lens L1 to the image side of the last lens is the positive direction of the optical axis. When the value is negative, it means that the stop ST0 is set on the object side of the lens in Figure 1 On the right side of the vertex, if the thickness of the diaphragm STO is positive, the diaphragm is on the left side of the vertex on the object side of the lens.

Table 1

The aspheric surface type in the lens is defined by the following formula:

Among them, x is the distance vector height of the aspheric surface from the apex of the aspheric surface when the height is h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/R (that is, the paraxial curvature c is shown in Table 1 The reciprocal of the middle radius of curvature R); k is the conic coefficient; Ai is the i-th order coefficient of the aspheric surface. Table 2 below shows the higher order term coefficients A4, A6, A8, A10, A12, A14, A16, A18, and A20 that can be used for the lens aspheric surfaces S11-S12 and S15-S16 in Example 1.

Table 2

The distance TTL from the object side surface S1 of the first lens L1 to the imaging surface S19 of the optical imaging system 100 on the optical axis is 29.25 mm, and the diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging system 100 is 5.15 mm. Combining the data in Table 1 and Table 2, it can be seen that the optical imaging system 100 in Embodiment 1 satisfies:

f12/f=-4.36, where f12 represents the combined focal length of the first lens L1 and the second lens L2, and f represents the effective focal length of the optical imaging system 100;

(sag S6)*f/(f3+f4)=11.98mm, where sag S6 represents the vector height of the cemented surface of the third lens L3 and the fourth lens L4, f3 represents the effective focal length of the third lens L3, and f4 represents the fourth lens. The effective focal length of the lens L4, f represents the effective focal length of the optical imaging system 100;

CT4/CT3=1.4, where CT3 represents the thickness of the third lens L3 on the optical axis, and CT4 represents the thickness of the fourth lens L4 on the optical axis;

f567/f=2.07, where f567 represents the combined focal length of the fifth lens L5, the sixth lens L6, and the seventh lens L7, and f represents the effective focal length of the optical imaging system 100;

f6/CT6=9.52, where f6 represents the effective focal length of the sixth lens L6, and CT6 represents the thickness of the sixth lens L6 on the optical axis;

f8/CT8=10.33, where f8 represents the effective focal length of the eighth lens L8, and CT8 represents the thickness of the eighth lens L8 on the optical axis;

R7f*f/f7=-16.23mm, where R7f represents the radius of curvature of the object side surface S13 of the seventh lens L7 at the optical axis, f represents the effective focal length of the optical imaging system 100, and f7 represents the effective focal length of the seventh lens L7;

ΣCT/TTL=0.6, where ΣCT represents the sum of the thicknesses of the first lens L1 to the eighth lens L8 on the optical axis, and TTL represents the object side surface S1 of the first lens L1 to the imaging surface S19 of the optical imaging system 100 The distance on the optical axis;

ImgH/tan(FOV/2)=6.92mm, where ImgH represents half of the diagonal length of the effective pixel area on the imaging surface S19 of the optical imaging system 100, and FOV represents the diagonal field angle of the optical imaging system 100;

EPD/ImgH=0.99, where EPD represents the entrance pupil diameter of the optical imaging system 100, and ImgH represents half of the diagonal length of the effective pixel area on the imaging surface S19 of the optical imaging system 100.

2 shows the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical imaging system 100 of Embodiment 1. The reference wavelength of the optical imaging system 100 is 546.07 nm. The longitudinal spherical aberration graph shows the deviation of the focal point of light with wavelengths of 450nm, 479.99nm, 546.07nm, 588nm and 656nm after passing through the optical imaging system 100; the astigmatism curve diagram shows the meridional image plane of the optical imaging system 100 Curved and sagittal image plane curvature; the distortion curve diagram shows the distortion of the optical imaging system 100 under different image heights. According to FIG. 2, it can be seen that the optical imaging system 100 given in Embodiment 1 can achieve good imaging quality.

Example 2

Hereinafter, the optical imaging system 100 of Embodiment 2 of the present application will be described with reference to FIGS. 3 to 4. In this embodiment, for the sake of brevity, some descriptions similar to those in Embodiment 1 will be omitted. FIG. 3 shows a schematic structural diagram of an optical imaging system 100 according to Embodiment 2 of the present application.

As shown in FIG. 3, the optical imaging system 100 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens in order from the object side to the image side along the optical axis. Lens L6, seventh lens L7, eighth lens L8, and imaging surface S19.

The first lens L1 has a negative refractive power, and the object side surface S1 and the image side surface S2 are both spherical surfaces, wherein the object side surface S1 is a concave surface, and the image side surface S2 is a concave surface.

The seventh lens L7 has a negative refractive power, and the object side surface S13 and the image side surface S14 are both spherical surfaces, in which the object side surface S13 is a convex surface, and the image side surface S14 is a concave surface.

Both the object side surface and the image side surface of the sixth lens L6 and the eighth lens L8 are set to be aspherical surfaces. The materials of the first lens L1 to the sixth lens L8 are all glass. A stop STO is also provided between the second lens group and the third lens group (that is, between the fourth lens L4 and the fifth lens L5) to limit the size of the incident light beam and further improve the imaging quality of the optical imaging system 100. The optical imaging system 100 further includes a filter 110 disposed on the image side of the eighth lens L8 and having an object side surface S17 and an image side surface S18. The light from the object OBJ sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19. Further, the filter 110 is an infrared filter, which is used to filter the infrared light in the external light incident to the optical imaging system 100 to avoid the distortion of the imaging color.

Table 3 shows the surface type, radius of curvature, thickness, material, refractive index, Abbe number (ie, dispersion coefficient) and effective focal length of each lens of the optical imaging system 100 of Example 2, where the radius of curvature, The units of thickness and effective focal length of each lens are millimeters (mm). Table 4 shows the coefficients of higher order terms that can be used for the aspheric surfaces S11-S12 and S15-S16 of the lens in Example 2, where the aspheric surface type can be defined by the formula (1) given in Example 1; Table 5 shows The relevant parameter values of the optical imaging system 100 given in Embodiment 2 are shown.

table 3

Table 4

table 5

FIG. 4 shows the longitudinal spherical aberration curve, astigmatism curve and distortion curve of the optical imaging system 100 of Embodiment 2 respectively, and the reference wavelength of the optical imaging system 100 is 546.07 nm. The longitudinal spherical aberration graph shows the deviation of the focal point of light with wavelengths of 450nm, 479.99nm, 546.07nm, 588nm and 656nm after passing through the optical imaging system 100; the astigmatism curve diagram shows the meridional image plane of the optical imaging system 100 Curved and sagittal image plane curvature; the distortion curve diagram shows the distortion of the optical imaging system 100 under different image heights. According to FIG. 4, it can be seen that the optical imaging system 100 provided in Embodiment 2 can achieve good imaging quality.

Example 3

Hereinafter, the optical imaging system 100 of Embodiment 3 of the present application will be described with reference to FIGS. 5 to 6. In this embodiment, for the sake of brevity, some descriptions similar to those in Embodiment 1 will be omitted. FIG. 5 shows a schematic structural diagram of an optical imaging system 100 according to Embodiment 3 of the present application.

As shown in FIG. 5, the optical imaging system 100 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens in order from the object side to the image side along the optical axis. Lens L6, seventh lens L7, eighth lens L8, and imaging surface S19.

Table 6 shows the surface type, radius of curvature, thickness, material, refractive index, Abbe number (ie dispersion coefficient) and effective focal length of each lens of the optical imaging system 100 of Example 3, where the radius of curvature, The units of thickness and effective focal length of each lens are millimeters (mm). Table 7 shows the coefficients of higher order terms that can be used for the lens aspheric surfaces S11-S12 and S15-S16 in Example 3. The aspheric surface type can be defined by the formula (1) given in Example 1; Table 8 shows The relevant parameter values of the optical imaging system 100 given in Embodiment 3 are shown.

Table 6

Table 7

Table 8

6 shows the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical imaging system 100 of Embodiment 3, respectively, and the reference wavelength of the optical imaging system 100 is 546.07 nm. The longitudinal spherical aberration graph shows the deviation of the focal point of light with wavelengths of 450nm, 479.99nm, 546.07nm, 588nm and 656nm after passing through the optical imaging system 100; the astigmatism curve diagram shows the meridional image plane of the optical imaging system 100 Curved and sagittal image plane curvature; the distortion curve diagram shows the distortion of the optical imaging system 100 under different image heights. It can be seen from FIG. 6 that the optical imaging system 100 provided in Embodiment 3 can achieve good imaging quality.

Example 4

Hereinafter, the optical imaging system 100 of Embodiment 4 of the present application will be described with reference to FIGS. 7 to 8. In this embodiment, for the sake of brevity, some descriptions similar to those in Embodiment 1 will be omitted. FIG. 7 shows a schematic structural diagram of an optical imaging system 100 according to Embodiment 4 of the present application.

As shown in FIG. 7, the optical imaging system 100 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens in order from the object side to the image side along the optical axis. Lens L6, seventh lens L7, eighth lens L8, and imaging surface S19.

Table 9 shows the surface type, radius of curvature, thickness, material, refractive index, Abbe number (ie dispersion coefficient) and effective focal length of each lens of the optical imaging system 100 of Example 4, where the radius of curvature, The units of thickness and effective focal length of each lens are millimeters (mm). Table 10 shows the coefficients of the higher order terms that can be used for the aspheric surfaces S11-S12 and S15-S16 of the lens in Example 4, where the aspheric surface type can be defined by the formula (1) given in Example 1; Table 11 shows The relevant parameter values of the optical imaging system 100 given in Embodiment 4 are shown.

Table 9

Table 10

Table 11

8 shows the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical imaging system 100 of Embodiment 4, respectively. The reference wavelength of the optical imaging system 100 is 546.07 nm. The longitudinal spherical aberration graph shows the deviation of the focal point of light with wavelengths of 450nm, 479.99nm, 546.07nm, 588nm and 656nm after passing through the optical imaging system 100; the astigmatism curve diagram shows the meridional image plane of the optical imaging system 100 Curved and sagittal image plane curvature; the distortion curve diagram shows the distortion of the optical imaging system 100 under different image heights. According to FIG. 8, it can be seen that the optical imaging system 100 provided in Embodiment 4 can achieve good imaging quality.

Example 5

Hereinafter, the optical imaging system 100 of Embodiment 5 of the present application will be described with reference to FIGS. 9 to 10. In this embodiment, for the sake of brevity, some descriptions similar to those in Embodiment 1 will be omitted. FIG. 9 shows a schematic structural diagram of an optical imaging system 100 according to Embodiment 5 of the present application.

As shown in FIG. 9, the optical imaging system 100 includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens in order from the object side to the image side along the optical axis. Lens L6, seventh lens L7, eighth lens L8, and imaging surface S19.

Table 12 shows the surface type, radius of curvature, thickness, material, refractive index, Abbe number (ie dispersion coefficient) and effective focal length of each lens of the optical imaging system 100 of Example 5, where the radius of curvature, The units of thickness and effective focal length of each lens are millimeters (mm). Table 13 shows the coefficients of higher order terms that can be used for the lens aspheric surfaces S11-S12 and S15-S16 in Example 5. The aspheric surface type can be defined by the formula (1) given in Example 1; Table 14 shows The relevant parameter values of the optical imaging system 100 given in Embodiment 5 are shown.

Table 12

Table 13

Table 14

10 shows the longitudinal spherical aberration curve, astigmatism curve, and distortion curve of the optical imaging system 100 of Embodiment 5, respectively. The reference wavelength of the optical imaging system 100 is 546.07 nm. The longitudinal spherical aberration graph shows the deviation of the focal point of light with wavelengths of 450nm, 479.99nm, 546.07nm, 588nm and 656nm after passing through the optical imaging system 100; the astigmatism curve diagram shows the meridional image plane of the optical imaging system 100 Curved and sagittal image plane curvature; the distortion curve diagram shows the distortion of the optical imaging system 100 under different image heights. According to FIG. 10, it can be seen that the optical imaging system 100 provided in Embodiment 5 can achieve good imaging quality.

As shown in FIG. 11, the present application also provides an imaging module 200, which includes the optical imaging system 100 described above (as shown in FIG. 1); and a photosensitive element 210, which is provided in the optical imaging system 100 On the image side, the photosensitive surface of the photosensitive element 210 coincides with the imaging surface S19. Specifically, the photosensitive element 210 may adopt a complementary metal oxide semiconductor (CMOS, Complementary Metal Oxide Semiconductor) image sensor or a charge-coupled device (CCD, Charge-coupled Device) image sensor.

The aforementioned imaging module 200 can capture images with high pixels and a wide viewing angle by using the aforementioned optical imaging system 100. At the same time, the imaging module 200 also has the structural characteristics of miniaturization and light weight. The imaging module 200 can be applied to fields such as mobile phones, automobiles, surveillance, and medical treatment. Specifically, it can be used as a mobile phone camera, a car camera, a surveillance camera or an endoscope, etc.

As shown in FIG. 12, the aforementioned imaging module 200 can be used as a vehicle-mounted camera in a driving device 300. The driving device 300 may be an autonomous vehicle or a non-autonomous vehicle. The imaging module 200 can be used as a front-view camera, a rear-view camera or a side-view camera of the driving device 300. Specifically, the driving device 300 includes a vehicle body 310, and the imaging module 200 is installed at any position of the left rearview mirror, right rearview mirror, rear trunk, front headlights, rear headlights, etc. of the vehicle body 310 to obtain the vehicle A clear image of the environment around the body 310. In addition, the driving device 300 is also provided with a display screen 320, the display screen 320 is installed in the vehicle body 310, and the imaging module 200 is communicatively connected with the display screen 320, and the image information obtained by the imaging module 200 can be transmitted to the display screen 320. In the display, so that the driver can obtain more complete surrounding image information, improve safety while driving.

In particular, in some embodiments, the imaging module 200 may be applied to an autonomous vehicle. Continuing to refer to FIG. 12, the imaging module 200 is installed at any position on the body of the autonomous vehicle. For details, please refer to the installation position of the imaging module 200 in the driving device 300 of the above embodiment. For an autonomous vehicle, the imaging module 200 can also be installed on the top of the vehicle body. At this time, by installing multiple imaging modules 200 on the self-driving car to obtain environmental information with a 360° angle of view around the car body 310, the environmental information obtained by the imaging module 200 will be transmitted to the analysis and processing unit of the self-driving car for comparison. The road conditions around the vehicle body 310 are analyzed in real time. By adopting the imaging module 200, the accuracy of the identification and analysis of the analysis and processing unit can be improved, thereby improving the safety performance during automatic driving.

As shown in FIG. 13, the present application further provides an electronic device 400 including a housing 410 and the imaging module 200 as described above, and the imaging module 200 is installed on the housing 410. Specifically, the imaging module 200 is disposed in the housing 410 and is exposed from the housing 410 to obtain images. The housing 410 can provide the imaging module 200 with protection from dust, water, and drop. The corresponding hole of the module 200 allows light to penetrate into or out of the housing from the hole.

The above-mentioned electronic device 400 can use the aforementioned imaging module 200 to capture images with a wide viewing angle and high pixels. In other embodiments, the above-mentioned electronic device 400 is further provided with a corresponding processing system, and the electronic device 400 can transmit the image to the corresponding processing system in time after taking an image of the object, so that the system can make accurate analysis and judgment.

In other embodiments, the "electronic device" used may also include, but is not limited to, a device configured to be connected via a wired line and/or receive or send a communication signal via a wireless interface. An electronic device set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a "wireless terminal" 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.

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 manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can be made, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be subject to the appended claims.

Claims

An optical imaging system, characterized in that the optical imaging system includes in order from the object side to the image side along the optical axis:

The first lens group with negative refractive power;

A second lens group with positive refractive power;

The third lens group with positive refractive power;

A fourth lens group with positive refractive power; and,

The diaphragm is provided on the object side of the third lens group.
The optical imaging system of claim 1, wherein:

The first lens group includes a first lens with negative refractive power and a second lens with positive refractive power in sequence from the object side to the image side along the optical axis;

The second lens group includes a third lens with negative refractive power and a fourth lens with positive refractive power in sequence from the object side to the image side along the optical axis;

The third lens group includes a fifth lens with positive refractive power, a sixth lens with positive refractive power, and a seventh lens with negative refractive power in sequence from the object side to the image side along the optical axis;

The fourth lens group includes an eighth lens with positive refractive power.
The optical imaging system of claim 2, wherein:

Both the object side surface and the image side surface of the first lens are concave;

The object side surface of the second lens is convex, and the image side surface is flat;

The third lens and the fourth lens are cemented together, and the object side surface and the image side surface of the third lens are both concave, and the object side surface and the image side surface of the fourth lens are both convex surfaces;

Both the object side surface and the image side surface of the fifth lens are convex surfaces;

The object side surface of the sixth lens is convex near the optical axis, and the image side surface is convex near the optical axis;

The object side surface of the seventh lens is convex, and the image side surface is concave;

The object side of the eighth lens has a convex surface near the optical axis, and the image side has a concave surface near the optical axis.
The optical imaging system according to claim 2 or 3, wherein the optical imaging system satisfies the following relationship:

-5<f12/f<0;

Wherein, f12 represents the combined focal length of the first lens and the second lens, and f represents the effective focal length of the optical imaging system.
The optical imaging system according to claim 2 or 3, wherein the optical imaging system satisfies the following relationship:

9mm＜(sag S6)*f/(f3+f4)＜15mm;

Wherein, sag S6 represents the vector height of the cemented surface of the third lens and the fourth lens, f3 represents the effective focal length of the third lens, f4 represents the effective focal length of the fourth lens, and f represents the optical imaging The effective focal length of the system.
The optical imaging system according to claim 2 or 3, wherein the optical imaging system satisfies the following relationship:

1≤CT4/CT3＜2.5;

Wherein, CT3 represents the thickness of the third lens on the optical axis, and CT4 represents the thickness of the fourth lens on the optical axis.
The optical imaging system according to claim 2 or 3, wherein the optical imaging system satisfies the following relationship:

0＜f567/f＜2.5;

Wherein, f567 represents the combined focal length of the fifth lens, the sixth lens and the seventh lens, and f represents the effective focal length of the optical imaging system.
The optical imaging system according to claim 2 or 3, wherein the optical imaging system satisfies the following relationship:

6＜f6/CT6＜13;

Wherein, f6 represents the effective focal length of the sixth lens, and CT6 represents the thickness of the sixth lens on the optical axis.
The optical imaging system according to claim 2 or 3, wherein the optical imaging system satisfies the following relationship:

8＜f8/CT8＜13;

Wherein, f8 represents the effective focal length of the eighth lens, and CT8 represents the thickness of the eighth lens on the optical axis.
The optical imaging system according to claim 2 or 3, wherein the optical imaging system satisfies the following relationship:

-22mm＜R7f*f/f7＜-15mm;

Wherein, R7f represents the radius of curvature of the object side surface of the seventh lens at the optical axis, f represents the effective focal length of the optical imaging system, and f7 represents the effective focal length of the seventh lens.
The optical imaging system according to claim 2 or 3, wherein the optical imaging system satisfies the following relationship:

0.4＜∑CT/TTL＜0.7;

Wherein, ΣCT represents the sum of the thickness of the first lens to the eighth lens on the optical axis, and TTL represents the distance from the object side of the first lens to the imaging surface of the optical imaging system on the optical axis .
The optical imaging system according to any one of claims 1 to 3, wherein the optical imaging system satisfies the following relationship:

5mm＜ImgH/tan(FOV/2)＜8mm;

Wherein, ImgH represents half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging system, and FOV represents the diagonal field angle of the optical imaging system.
The optical imaging system according to any one of claims 1-3, wherein the optical imaging system satisfies the following relationship:

0.8＜EPD/ImgH＜1.3;

Wherein, EPD represents the entrance pupil diameter of the optical imaging system, and ImgH represents half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging system.
An imaging module, characterized by comprising the optical imaging system according to any one of claims 1-13 and a photosensitive element, the photosensitive element being arranged on the image side of the optical imaging system.
An electronic device, comprising a housing and the imaging module according to claim 14, the imaging module being installed on the housing.
A driving device, characterized by comprising a vehicle body and the imaging module according to claim 14, wherein the imaging module is provided on the vehicle body to obtain environmental information around the vehicle body.