CN109327571B

CN109327571B - Camera assembly and electronic device

Info

Publication number: CN109327571B
Application number: CN201811311112.3A
Authority: CN
Inventors: 张弓
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-11-06
Filing date: 2018-11-06
Publication date: 2020-08-14
Anticipated expiration: 2038-11-06
Also published as: CN109327571A

Abstract

A camera component and an electronic device comprise a first imaging module, a second imaging module and a third imaging module which are all fixed-focus lenses; the camera assembly satisfies the following conditions: f2 < f3 < f 1; f3/f2 is more than 1 and less than or equal to 5; f1/f2 is more than 5 and less than or equal to 10; wherein f1 is the equivalent focal length of the first imaging module, f2 is the equivalent focal length of the second imaging module, and f3 is the equivalent focal length of the third imaging module. In the camera assembly and the electronic device in the embodiment of the application, the first imaging module adopts the periscopic imaging module, so that the optical zooming effect of more than 5 times can be obtained by combining the first imaging module and the second imaging module. In addition, the second imaging module and the third imaging module are combined to obtain an optical zooming effect which is more than 1 time and less than or equal to 5 times. Therefore, the first imaging module, the second imaging module and the third imaging module are combined to enable the camera assembly to achieve optical zooming between 1-10 times, and the shooting effect of the camera assembly is improved.

Description

Camera assembly and electronic device

Technical Field

The present application relates to the field of portable electronic devices, and more particularly, to a camera assembly and an electronic device.

Background

In the related art, a mobile phone is provided with two cameras, and the two cameras are used for matching shooting to obtain an optical zoom (2x) effect of 2 times, so that the shooting effect of the mobile phone is improved. However, due to the thickness size limitation of the mobile phone, the size of the camera for the mobile phone is also limited, and accordingly, the size of the photosensitive element of the camera and the size of the imaging lens are limited, so that the zoom factor of the camera is also limited. Therefore, it is difficult to increase the optical zoom factor of the mobile phone without increasing the thickness of the mobile phone.

Disclosure of Invention

In view of the foregoing, the present application provides a camera assembly and an electronic device.

A camera assembly comprises a first imaging module, a second imaging module and a third imaging module which are all fixed-focus lenses, wherein the first imaging module comprises a shell, a reflecting element and an image sensor, the reflecting element and the image sensor are arranged in the shell, the shell is provided with a light inlet, and the reflecting element is used for diverting incident light entering from the light inlet and then transferring the incident light to the image sensor so that the image sensor senses the incident light outside the first imaging module;

the camera assembly satisfies the following conditions:

f2＜f3＜f1；

1＜f3/f2≤5；

5＜f1/f2≤10；

wherein f1 is the equivalent focal length of the first imaging module, f2 is the equivalent focal length of the second imaging module, and f3 is the equivalent focal length of the third imaging module.

The electronic device of the embodiment of the application comprises a battery and the camera assembly of the embodiment, wherein the camera assembly is electrically connected with the battery.

In the camera assembly and the electronic device in the embodiment of the application, the first imaging module adopts the periscopic imaging module, so that the optical zooming effect of more than 5 times can be obtained by combining the first imaging module and the second imaging module. In addition, the second imaging module and the third imaging module are combined to obtain an optical zooming effect which is more than 1 time and less than or equal to 5 times. Therefore, the first imaging module, the second imaging module and the third imaging module are combined to enable the camera assembly to achieve optical zooming between 1-10 times, and the shooting effect of the camera assembly is improved.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic state diagram of an electronic device according to an embodiment of the present application;

fig. 2 is another state diagram of the electronic device according to the embodiment of the present application;

FIG. 3 is a schematic perspective view of a camera assembly according to an embodiment of the present application;

FIG. 4 is a schematic perspective view of a first imaging module according to an embodiment of the present disclosure;

FIG. 5 is an exploded view of a first imaging module according to an embodiment of the present disclosure;

FIG. 6 is a schematic cross-sectional view of a first imaging module according to an embodiment of the present disclosure;

FIG. 7 is a schematic, partially cross-sectional view of a first imaging module according to an embodiment of the present disclosure;

FIG. 8 is a schematic cross-sectional view of a first imaging module according to another embodiment of the present disclosure;

FIG. 9 is a perspective view of a retroreflective element according to an embodiment of the present application.

FIG. 10 is a schematic view of a light reflection imaging module according to the related art;

FIG. 11 is a schematic view of a light reflection imaging of a first imaging module according to an embodiment of the present disclosure;

FIG. 12 is a schematic structural diagram of an imaging module according to the related art;

FIG. 13 is a schematic view of a first imaging module according to an embodiment of the present disclosure;

fig. 14 is a schematic cross-sectional view of a second imaging module according to an embodiment of the present disclosure.

Description of the main element symbols:

the electronic device 1000, the body 110, the sliding module 200, and the gyroscope 120;

the camera module assembly 100, the first imaging module 20, the housing 21, the light inlet 211, the groove 212, the top wall 213, the side wall 214, the avoiding hole 215, the reflective element 22, the light incident surface 222, the back light surface 224, the light incident surface 226, the light emergent surface 228, the mounting seat 23, the arc surface 231, the first lens assembly 24, the lens 241, the moving element 25, the clip 222, the first image sensor 26, the driving mechanism 27, the driving device 28, the arc-shaped guide rail 281, the central axis 282, the chip circuit board 201, the mounting portion 2011, the connecting portion 2022, the driving chip 202, the sensor circuit board 203, the shield 204, the second imaging module 30, the second lens assembly 31, the second image sensor 32, the third imaging module 40, and the bracket 50.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Under the condition that the periscopic camera falls etc. at the interior reflective element of periscopic camera, reflective element receives the emergence offset easily, and reflective element can't turn to light to image sensor accurately, causes the image sensor can't accurately sense the object image outside the periscopic camera, unable normal use.

Referring to fig. 1 and fig. 2, an electronic device 1000 according to an embodiment of the present disclosure includes a body 110 and a sliding module 200. The sliding module 200 is configured to slide between a first position housed in the body 110 and a second position exposed from the body 110, the sliding module 200 is provided with the camera assembly 100 and the gyroscope 120 therein, and the camera assembly 100 and the gyroscope 120 are separately provided. The electronic device 1000 may be configured to control the operation of the camera assembly 100 according to the feedback data of the gyroscope 120 to achieve optical anti-shake photographing.

In the electronic device, the camera assembly 100 is separated from the gyroscope 120, so that devices in the camera assembly 100 are reduced, and the size of the camera assembly 100 can be reduced. In addition, the camera assembly 100 and the gyroscope 120 are both arranged in the sliding module 200, so that the gyroscope 120 is closer to the camera assembly 100, the gyroscope 120 can accurately detect the shaking condition of the camera assembly 100, and the anti-shaking effect of the camera assembly 100 is improved.

By way of example, the electronic device 1000 may be any of various types of computer system equipment (only one modality shown in fig. 1 by way of example) that is mobile or portable and that performs wireless communications. Specifically, the electronic apparatus 1000 may be a mobile phone or a smart phone (e.g., an iPhone-based phone), a Portable game device (e.g., Nintendo DS, PlayStation Portable, game Advance, iPhone), a laptop computer, a PDA, a Portable internet device, a music player, and a data storage device, other handheld devices, and a head-mounted device (HMD) such as a watch, an in-ear phone, a pendant, a headset, etc., and the electronic apparatus 100 may also be other wearable devices (e.g., a head-mounted device (HMD) such as electronic glasses, electronic clothes, an electronic bracelet, an electronic necklace, an electronic tattoo, an electronic device, or a smart watch).

The electronic apparatus 1000 may also be any of a number of electronic devices including, but not limited to, cellular phones, smart phones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, video recorders, cameras, other media recorders, radios, medical devices, vehicle transportation equipment, calculators, programmable remote controllers, pagers, laptop computers, desktop computers, printers, netbook computers, Personal Digital Assistants (PDAs), Portable Multimedia Players (PMPs), moving Picture experts group (MPEG-1 or MPEG-2) Audio layer 3(MP3) players, portable medical devices, and digital cameras, and combinations thereof.

In some cases, the electronic device 1000 may perform multiple functions (e.g., playing music, displaying video, storing pictures, and receiving and sending telephone calls). If desired, the electronic apparatus 1000 may be a portable device such as a cellular telephone, media player, other handheld device, wrist watch device, pendant device, earpiece device, or other compact portable device.

The gyroscope 120, which is a typical sensor, can be used to detect linear motion in the axial direction of the electronic device 1000, and can measure the motion of rotation and deflection. For example, the gyroscope 120 may detect the vertical or horizontal state of the electronic device 1000, and the central processing unit of the electronic device 1000 may control the display screen to rotate according to the acquired detection data.

In this embodiment, the gyroscope 120 may be used to detect the shaking of the sliding module 200 and feed back corresponding data. When the camera assembly 100 performs imaging, a gyroscope 120 of the electronic device 1000 is used to detect a minute shake generated by the camera assembly 100, and the gyroscope 120 transmits detected shake data, such as a tilt angle due to the shake of the camera assembly 100 and a shift generated by the tilt, to a processing chip of the electronic device 1000, such as a driving chip described below. The processing chip controls the components in the imaging module to move relatively to the camera assembly 100 according to the received feedback data of the gyroscope 120, so as to realize anti-shake.

It will be appreciated that the gyroscope 120 of the electronic device 1000 is located elsewhere in the camera head assembly 100, thereby saving space in the camera head assembly 100 for a separate gyroscope. Thus, the size of the camera assembly 100 is similar to that of a common camera assembly, and optical anti-shake can be realized by using the gyroscope 120 of the electronic device 1000, so that the size of the camera assembly 100 is effectively reduced while the anti-shake function is maintained.

Specifically, referring to fig. 1 and 2, the body 110 further includes a top surface 1002 and a bottom surface 1003 opposite to the top surface 1002. Generally, the top end surface 1002 and the bottom end surface 1003 may extend in the width direction of the body 110. I.e., the top 1002 and bottom 1003 surfaces are the short sides of the electronic device 1000. The bottom face 1003 is used for arranging connectors, microphones, speakers, etc. of the electronic device 1000.

The top of the body 110 is formed with a receiving groove 1004, and the receiving groove 1004 is recessed from the top of the body 110 to the inside of the body 110. The receiving groove 1004 may penetrate the side of the body 110. The sliding module 200 is slidably connected to the body 110 in the receiving groove 1004. In other words, the sliding module 200 is slidably coupled to the body 110 to extend or retract the receiving groove 1004.

The sliding module 200 includes a top surface 2003 that is substantially flush with the top end surface 1002 when the sliding module 200 is in the first position. The sliding module 200 may be connected to a screw mechanism, and the screw mechanism may drive the sliding module 200 to slide between the first position and the second position.

It can be understood that when the sliding module 200 extends out of the receiving groove 1004, the camera assembly 100 is exposed out of the body 110, and at this time, the camera assembly 100 can shoot normally.

It is understood that the electronic device 1000 includes a battery (not shown) that is electrically connected to the camera head assembly 100.

Referring to fig. 3, the camera assembly 100 includes a first imaging module 20, a second imaging module 30, a third imaging module 40, and a bracket 50.

The first imaging module 20, the second imaging module 30 and the third imaging module 40 are all disposed in the bracket 50 and are fixedly connected with the bracket 50. The bracket 50 can reduce the impact on the first imaging module 20, the second imaging module 30 and the third imaging module 40, and improve the service life of the first imaging module 20, the second imaging module 30 and the third imaging module 40.

In the present embodiment, the field angle FOV3 of the third imaging module 40 is larger than the field angle FOV1 of the first imaging module 20 and smaller than the field angle FOV2 of the second imaging module 30, that is, FOV1 < FOV3 < FOV 2. Thus, the three imaging modules with different field angles enable the camera assembly 100 to meet the shooting requirements in different scenes.

In one example, the field angle FOV1 of the first imaging module 20 is 10-30 degrees, the field angle FOV2 of the second imaging module 30 is 110-130 degrees, and the field angle FOV3 of the third imaging module 40 is 80-110 degrees.

For example, the field angle FOV1 of the first imaging module 20 is 10 degrees, 12 degrees, 15 degrees, 20 degrees, 26 degrees, or 30 degrees. The field angle FOV2 of the second imaging module 30 is 110, 112, 118, 120, 125 or 130 degrees. The FOV3 of the third imaging module 40 is 80, 85, 90, 100, 105 or 110 degrees.

Since the field angle FOV1 of the first imaging module 20 is small, it can be understood that the focal length of the first imaging module 20 is large, and therefore, the first imaging module 20 can be used to shoot a long shot, so as to obtain a clear long shot image. The field angle FOV2 of the second imaging module 30 is larger, and it can be understood that the focal length of the second imaging module 30 is shorter, so the second imaging module 30 can be used to capture a close-up view, thereby obtaining a close-up image of a part of an object. The third imaging module 40 can be used for normally photographing the object.

In this way, by combining the first imaging module 20, the second imaging module 30 and the third imaging module 40, image effects such as background blurring and local sharpening of images can be obtained.

The first imaging module 20, the second imaging module 30 and the third imaging module 40 are arranged in parallel. In the present embodiment, the first imaging module 20, the second imaging module 30 and the third imaging module 40 are arranged in a line. Further, the second imaging module 30 is located between the first imaging module 20 and the third imaging module 40.

Due to the field angle of the first imaging module 20 and the third imaging module 40, in order to obtain images with better quality from the first imaging module 20 and the third imaging module 40, the first imaging module 20 and the third imaging module 40 may be configured with an optical anti-shake device, and the optical anti-shake device is generally configured with more magnetic elements, so that the first imaging module 20 and the third imaging module 40 can generate a magnetic field.

In the present embodiment, the second imaging module 30 is located between the first imaging module 20 and the third imaging module 40, so that the first imaging module 20 and the third imaging module 40 can be far away from each other, and the magnetic field formed by the first imaging module 20 and the magnetic field formed by the third imaging module 40 are prevented from interfering with each other and affecting the normal use of the first imaging module 20 and the third imaging module 40.

In other embodiments, the first imaging module 20, the second imaging module 30, and the third imaging module 40 may be arranged in an L-shape.

The first imaging module 20, the second imaging module 30 and the third imaging module 40 may be disposed at intervals, and two adjacent imaging modules may abut against each other.

In the first imaging module 20, the second imaging module 30, and the third imaging module 30, any one of the imaging modules may be a black-and-white camera, an RGB camera, or an infrared camera.

The processing chip of the electronic device 1000 is configured to control the first imaging module 20 to operate according to the feedback data of the gyroscope 120 to implement optical anti-shake shooting.

Referring to fig. 4-6, in the present embodiment, the first imaging module 20 includes a housing 21, a reflective element 22, a mounting base 23, a first lens assembly 24, a moving element 25, a first image sensor 26, and a driving mechanism 27.

The retroreflective element 22, the mounting base 23, the first lens assembly 24, and the motive element 25 are disposed within the housing 21. Retroreflective element 22 is mounted on mount 23 and first lens assembly 24 is secured to a motive element 25. The moving element 25 is disposed on the first image sensor 26 side. Further, the moving element 25 is located between the light reflecting element 22 and the first image sensor 26.

A drive mechanism 27 connects the moving element 25 with the housing 21. Incident light enters the housing 21, is deflected by the reflective element 22, and then passes through the first lens assembly 24 to the first image sensor 26, so that the first image sensor 26 obtains an ambient image. The driving mechanism 27 is used for driving the moving element 25 to move along the optical axis of the first lens assembly 24.

The housing 21 has a substantially square shape, and the housing 21 has a light inlet 211, and the incident light enters the first imaging module 20 through the light inlet 211. That is, the reflective element 22 is used for diverting incident light from the light inlet 211 and transmitting the diverted incident light to the first image sensor 26 through the first lens assembly 24, so that the first image sensor 26 senses the incident light outside the first imaging module 20.

Therefore, it can be understood that the first imaging module 20 is a periscopic lens module, and the height of the periscopic lens module is smaller than that of the vertical lens module, so that the overall thickness of the electronic device 1000 can be reduced. The vertical lens module means that the optical axis of the lens module is a straight line, or the incident light is transmitted to the photosensitive device of the lens module along the direction of the straight line optical axis.

It can be understood that the light inlet 211 is exposed through the through hole 11, so that external light enters the first imaging module 20 from the light inlet 211 after passing through the through hole 11.

Specifically, referring to fig. 5, the housing 21 includes a top wall 213 and a side wall 214. The side wall 214 is formed extending from a side edge 2131 of the top wall 213. The top wall 213 includes two opposite sides 2131, the number of the side walls 214 is two, and each side wall 214 extends from a corresponding one of the side walls 2131, or the side walls 214 are respectively connected to two opposite sides of the top wall 213. The light inlet 211 is formed in the top wall 213.

Reflective element 22 is a prism or a flat mirror. In one example, when reflective element 22 is a prism, the prism may be a triangular prism having a cross-section of a right triangle, wherein light is incident from one of the legs of the right triangle and exits through reflection from the hypotenuse to the other leg. It will be appreciated that, of course, the incident light may exit after being refracted by the prism, without being reflected. The prism can be made of glass, plastic and other materials with better light transmittance. In one embodiment, one of the surfaces of the prism may be coated with a light reflecting material such as silver to reflect incident light.

It will be appreciated that when reflective element 22 is a flat mirror, the flat mirror reflects incident light to effect steering of the incident light.

Referring to fig. 6 and 9, the reflective element 22 has a light incident surface 222, a light emitting surface 224, a light reflecting surface 226 and a light emitting surface 228. The light incident surface 222 is close to and faces the light inlet 211. The backlight surface 224 is far away from the light inlet 211 and is opposite to the light incident surface 222. The light-reflecting surface 226 connects the light-incident surface 222 and the light-incident surface 224. The light-emitting surface 228 connects the light-entering surface 222 and the light-exiting surface 224. The light exit surface 228 faces the first image sensor 26. The light-reflecting surface 226 is disposed obliquely to the light-incident surface 222. The light emitting surface 228 is opposite to the light reflecting surface 226.

Specifically, in the light conversion process, the light passes through the light inlet 211, enters the reflective element 22 through the light incident surface 222, is reflected by the light reflecting surface 226, and finally reflects the reflective element 22 out of the light emitting surface 228, thereby completing the light conversion process, and the backlight surface 224 and the mounting base 23 are fixedly disposed, so that the reflective element 22 is kept stable.

As shown in fig. 10, in the related art, because the reflecting surface 226a of the reflector 22a is inclined with respect to the horizontal direction and the reflector 22a has an asymmetric structure in the reflecting direction of the light, the actual optical area under the reflector 22a is smaller than that above the reflector 22a, and it can be understood that the part of the reflecting surface 226a far away from the light inlet is less or unable to reflect the light.

Therefore, referring to fig. 11, the reflector 22 of the present embodiment is cut away from the light inlet with respect to the reflector 22a of the related art, so that the effect of reflecting light from the reflector 22 is not affected and the overall thickness of the reflector 22 is reduced.

Referring to fig. 6, in some embodiments, the light-reflecting surface 226 is inclined at an angle α of 45 degrees with respect to the light-incident surface 222.

Therefore, the incident light rays are better reflected and converted, and a better light ray conversion effect is achieved.

Retroreflective element 22 may be made of a material having relatively good light transmission properties such as glass or plastic. In one embodiment, one of the surfaces of retroreflective element 22 may be coated with a reflective material such as silver to reflect incident light.

In some embodiments, the light incident surface 222 is disposed parallel to the light emergent surface 224.

Thus, when the backlight surface 224 and the mounting seat 23 are fixedly arranged, the light reflecting element 22 can be kept stable, the light incident surface 222 is also a plane, and incident light forms a regular light path in the conversion process of the light reflecting element 22, so that the conversion efficiency of the light is better. Specifically, the cross section of the reflector 22 is substantially trapezoidal along the light incident direction of the light inlet 211, or the reflector 22 is substantially trapezoidal.

In some embodiments, the light-in surface 222 and the light-out surface 224 are perpendicular to the light-out surface 228.

Thus, a regular reflector 22 can be formed, so that the incident light path is straight, and the light conversion efficiency is improved.

In some embodiments, the distance between the light incident surface 222 and the light emergent surface 224 is in the range of 4.8 mm to 5.0 mm.

Specifically, the distance between the light incident surface 222 and the light backlight surface 224 may be 4.85mm, 4.9mm, 4.95mm, and the like. Alternatively, the distance between the light incident surface 222 and the light emergent surface 224 is understood to be 4.8-5.0mm in height of the reflector 22. The size of the reflector 22 formed by the light incident surface 222 and the light backlight surface 224 within the above distance range is moderate, and the reflector can be better fit into the first imaging module 20, so as to form a more compact and miniaturized first imaging module 20, camera assembly 100 and electronic device 1000, thereby satisfying more demands of consumers.

In some embodiments, the light incident surface 222, the light backlight surface 224, the light reflecting surface 226 and the light emitting surface 228 are hardened to form a hardened layer.

When reflector 22 is made of glass or the like, reflector 22 itself is brittle, and in order to increase the strength of reflector 22, the light-incident surface 222, the light-backlight surface 224, the light-reflecting surface 226, and the light-emitting surface 228 of reflector 22 may be hardened, or more, all the surfaces of the reflector may be hardened to further increase the strength of the reflector. Hardening processes such as infiltration of lithium ions, lamination of the various surfaces without affecting the light conversion of retroreflective element 22, and the like.

In one example, the retroreflective elements 22 redirect incident light from the light inlet 211 at an angle of 90 degrees. For example, the incident angle of incident light on the emitting surface of the light reflecting member 22 is 45 degrees, and the reflection angle is also 45 degrees. Of course, the angle at which the reflective element 22 deflects the incident light may be other angles, such as 80 degrees, 100 degrees, etc., as long as the incident light is deflected to reach the first image sensor 26.

In the present embodiment, the number of the reflective elements 22 is one, and the incident light is transmitted to the first image sensor 26 after being once deflected. In other embodiments, the reflective element 22 is provided in a plurality, and the incident light is deflected at least twice to the first image sensor 26.

The mounting 23 is used to mount the reflector 22, or the mounting 23 is a carrier for the reflector 22, and the reflector 22 is fixed on the mounting 23. This allows the position of the retroreflective elements 22 to be determined to facilitate the retroreflective elements 22 to reflect or refract incident light. Retroreflective element 22 may be adhesively secured to mount 23 to provide a secure attachment to mount 23.

Specifically, in this embodiment, mounting base 23 is provided with a stop structure 232, and stop structure 232 engages reflective element 22 to limit the position of reflective element 22 on mounting base 23.

In this way, the position limiting structure 232 limits the position of the reflective element 22 on the mounting seat 23, so that the reflective element 22 will not shift in position when being impacted, which is beneficial to the normal use of the first imaging module 20.

It will be appreciated that in one example, the reflector 22 is adhesively secured to the mounting base 23. if the stop structure 232 is omitted, then the reflector 22 may easily fall off the mounting base 23 if the adhesive force between the reflector 2222 and the mounting base 23 is insufficient when the first imaging module 20 is impacted.

In the present embodiment, the mounting seat 23 is formed with a mounting groove 233, the light reflecting member 22 is disposed in the mounting groove 233, and the stopper 232 is disposed at an edge of the mounting groove 233 and abuts against the light reflecting member 22.

As such, the mounting groove 233 may allow the light reflecting member 22 to be easily mounted on the mounting seat 23. The stopper 232 is disposed at the edge of the mounting groove 233 and abuts against the edge of the light reflecting member 22, so that not only the position of the light reflecting member 22 can be restricted but also the light reflecting member 22 is not prevented from emitting incident light to the first image sensor 26.

Further, the position limiting structure 232 includes a protrusion 234 protruding from the edge of the mounting groove 233, and the protrusion 234 abuts against the edge of the light emitting surface 228. Since the reflective element 22 is mounted on the mounting base 23 via the reflective surface 226, the light emitting surface 228 is disposed opposite to the reflective surface 226. Therefore, the reflective element 22 is more easily positioned toward one side of the light emitting surface 228 when being impacted. In this embodiment, the limit structure 232 abuts against the edge of the light-emitting surface 228, so that the reflective element 22 is prevented from moving to the side of the light-emitting surface 228, and the light can be emitted from the light-emitting surface 228 normally.

Of course, in other embodiments, the limiting structure 232 may comprise other structures as long as the position of the reflective element 22 can be limited. For example, retaining structure 232 may be formed with a catch slot and reflective element 22 may be formed with a retaining post that snaps into the catch slot to limit the position of reflective element 22.

In some embodiments, the protrusion 234 is in the shape of a bar and extends along the edge of the light emitting surface 228. Thus, the contact area between the protrusion 234 and the edge of the light emitting surface 228 is large, so that the light reflecting element 22 can be more firmly located on the mounting seat 23.

Of course, in other embodiments, the protrusion 234 may have other structures such as a block shape.

Referring again to FIG. 5, in one example, the mounting base 23 is movably disposed within the housing 21, and the mounting base 23 can rotate relative to the housing 21 to adjust the direction in which the reflective element 22 turns the incident light.

The mounting seat 23 can drive the reflective element 22 to rotate together in the direction opposite to the shaking direction of the first imaging module 20, so as to compensate the incident deviation of the incident light of the light inlet 211, thereby achieving the optical anti-shaking effect.

The first lens assembly 24 is received in the moving element 25, and further, the first lens assembly 24 is disposed between the reflective element 22 and the first image sensor 26. The first lens assembly 24 is used to image incident light onto a first image sensor 26. This allows the first image sensor 26 to obtain a better quality image.

The first lens assembly 24 can form an image on the first image sensor 26 when moving integrally along the optical axis thereof, thereby realizing the focusing of the first imaging module 20. Further, the driving mechanism 27 drives the moving element 25 to move in the housing 21 for focusing.

In the example of FIG. 6, in some embodiments, the moving element 25 is cylindrical and the plurality of lenses 241 of the first lens assembly 24 are fixed within the moving element 25 at intervals along the axial direction of the moving element 25. As in the example of fig. 8, the moving element 25 comprises two clips 252, the two clips 252 sandwiching the lens 241 between the two clips 252.

It can be understood that, because the moving element 25 is used for fixedly arranging the plurality of lenses 241, the length of the moving element 25 is large, and the moving element 25 can be cylindrical or square-cylindrical and has a certain cavity shape, so that the moving element 25 can be in a cylindrical shape to better arrange the plurality of lenses 241, and can better protect the lenses 241 in the cavity, so that the lenses 241 are not easy to shake.

In the example of fig. 8, the moving element 25 clamps the plurality of lenses 241 between the two clamping pieces 252, which not only has a certain stability, but also reduces the weight of the moving element 25, which can reduce the power required by the driving mechanism 27 to drive the moving element 25, and the moving element 25 is also less difficult to design, and the lenses 241 are also easier to be disposed on the moving element 25.

Of course, the moving element 25 is not limited to the above-mentioned cylindrical shape and two clips 252, and in other embodiments, the moving element 25 may include three, four, etc. more clips 252 to form a more stable structure, or one clip 252 to form a simpler structure; or a rectangular body, a circular body, etc. having a cavity for accommodating various regular or irregular shapes of the lens 241. On the premise of ensuring normal imaging and operation of the imaging module 10, the specific selection is only needed.

The first image sensor 26 may employ a Complementary Metal Oxide Semiconductor (CMOS) photosensitive element or a Charge-coupled Device (CCD) photosensitive element.

In certain embodiments, the drive mechanism 27 is an electromagnetic drive mechanism, a piezoelectric drive mechanism, or a memory alloy drive mechanism.

Specifically, the electromagnetic driving mechanism includes a magnetic field and a conductor, if the magnetic field moves relative to the conductor, an induced current is generated in the conductor, the induced current makes the conductor subject to an ampere force, and the ampere force makes the conductor move, where the conductor is a part of the electromagnetic driving mechanism that drives the moving element 25 to move; the piezoelectric driving mechanism is based on the inverse piezoelectric effect of the piezoelectric ceramic material: if voltage is applied to the piezoelectric material, mechanical stress is generated, namely, the electric energy and the mechanical energy are converted, and the rotation or linear motion is generated by controlling the mechanical deformation of the piezoelectric material, so that the piezoelectric material has the advantages of simple structure and low speed.

The driving of the memory alloy driving mechanism is based on the characteristics of the shape memory alloy: the shape memory alloy is a special alloy which, once it has memorized any shape, even if deformed, can recover to the shape before deformation when heated to a certain proper temperature, thereby achieving the purpose of driving, and has the characteristics of rapid displacement and free direction.

Referring again to fig. 6, the first imaging module 20 further includes a driving device 28, and the driving device 28 is used for driving the mounting base 23 with the reflecting element 22 to rotate around a rotation axis 29. The drive means 28 serve to drive the axial displacement of the mounting 23 along the axis of rotation 29. The rotation axis 29 is perpendicular to the optical axis of the light inlet 211 and the light sensing direction of the first image sensor 26, so that the first imaging module 20 realizes optical anti-shake of the optical axis of the light inlet 211 and the axial direction of the rotation axis 29.

In this way, since the volume of the reflective element 22 is smaller than that of the lens barrel, the driving device 28 drives the mounting seat 23 to move in two directions, which not only can achieve the optical anti-shake effect of the first imaging module 20 in two directions, but also can make the volume of the first imaging module 20 smaller.

Referring to fig. 5-6, for convenience of description, the width direction, the height direction and the length direction of the first imaging module 20 are defined as X direction, Y direction and Z direction, respectively. Accordingly, the optical axis of the light inlet 211 is the Y direction, the light receiving direction of the first image sensor 26 is the Z direction, and the axial direction of the rotation axis 29 is the X direction.

The driving device 28 drives the mounting base 23 to rotate, so that the reflecting element 22 rotates around the X direction, and the first imaging module 20 achieves the Y-direction optical anti-shake effect. In addition, the driving device 28 drives the mounting seat 23 to move along the axial direction of the rotation axis 29, so that the first imaging module 20 achieves the effect of optical anti-shake in the X direction. Additionally, the first lens assembly 24 may be along the Z-direction to achieve focusing of the first lens assembly 24 on the first image sensor 26.

Specifically, when the reflective element 22 rotates in the X direction, the light reflected by the reflective element 22 moves in the Y direction, so that the first image sensor 26 forms different images in the Y direction to achieve the anti-shake effect in the Y direction. When the reflective element 22 moves along the X direction, the light reflected by the reflective element 22 moves in the X direction, so that the first image sensor 26 forms different images in the X direction to achieve the anti-shake effect in the X direction.

In some embodiments, the driving device 28 is formed with an arcuate guide 281, and the driving device 28 is configured to drive the mounting base 23 to rotate around a central axis 282 of the arcuate guide 281 and to move axially along the central axis 282 along the arcuate guide 281, and the central axis 2282 is coincident with the rotation axis 29.

It will be appreciated that the drive means 28 is adapted to drive the mounting base 23 along the arcuate guide 281 in a rotational movement about the central axis 282 of the arcuate guide 281 and in an axial movement along the central axis 282.

In this way, since the driving device 28 drives the mounting seat 23 with the reflective element 22 to rotate together in the manner of the arc-shaped guide rail 281, the friction between the driving device 28 and the mounting seat 23 is small, which is beneficial to smooth rotation of the mounting seat 23 and improves the optical anti-shake effect of the first imaging module 20.

Specifically, referring to fig. 12, in the related art, a mounting base (not shown) is rotatably connected to a rotating shaft 23a, and the mounting base rotates around the rotating shaft 23a to drive the reflector 22a to rotate together. Assuming that the friction force is F1, the radius of the rotating shaft 23a is R1, the thrust force is F1, and the rotation radius is R1. The friction torque to thrust torque ratio K1 is then K1 ═ F1R1/F1a 1. Since the retroreflective element 22a only requires a slight rotation, F1 cannot be too large; the imaging module itself needs to be thin, light, short and small, so that the size of the reflective element 22a cannot be too large, and the enlarged space of a is limited, so that the influence of friction cannot be further eliminated.

Referring to fig. 13, in the present application, the mounting base 23 rotates along the arc-shaped guide 281, and the radius of the arc-shaped guide 281 is R2. At this time, the ratio K2 between the friction torque and the rotation torque is K2 ═ F2R2/F2A, and when F2, R2 and F2 do not change greatly, since the orbital swing mode is adopted for rotation, the corresponding thrust torque becomes R2, and R2 can be not limited by the size of the light reflecting element 22, and even can be more than several times of R1. In this case, the influence of the friction on the rotation of the reflective element 22 can be greatly reduced (the size of K2 is reduced), so as to improve the rotation accuracy of the reflective element 22, and the optical anti-shake effect of the first imaging module 20 is better.

Referring to fig. 6, in some embodiments, the mounting seat 23 includes an arc-shaped surface 231, and the arc-shaped surface 231 is disposed concentrically with the arc-shaped guide 281 and is matched with the arc-shaped guide 281. Or, the center of the arc-shaped face 231 coincides with the center of the arc-shaped guide 281. This makes the mounting 23 and the drive means 28 co-operating more compact.

In some embodiments, the central axis 282 is located outside of the first imaging module 20. In this manner, the radius R2 of the arcuate guide 281 is relatively large, which reduces the adverse effect of friction on the rotation of the mounting seat 23.

In some embodiments, the drive means 28 is located at the bottom of the housing 21. Alternatively, the drive means 28 is of unitary construction with the housing 21. In this way, the first imaging module 20 is more compact.

In some embodiments, the driving device 28 drives the mounting seat 23 to rotate through an electromagnetic mode. In one example, the driving device 28 is provided with a coil, and the mounting seat 23 is fixed with an electromagnetic sheet, and after the coil is powered on, the coil can generate a magnetic field to drive the electromagnetic sheet to move, so as to drive the mounting seat 23 and the reflecting element to rotate together.

Of course, in other embodiments, the driving device 28 may drive the mounting seat 23 to move by a piezoelectric driving method or a memory alloy driving method. Please refer to the above description for the piezoelectric driving method and the memory alloy driving method, which are not described herein.

Referring to fig. 4-7 again, the first imaging module 20 further includes a chip circuit board 201 and a driving chip 202, the chip circuit board 201 is fixed on a side surface of the driving mechanism 27, the driving chip 202 is fixed on a surface of the chip circuit board 201 opposite to the driving mechanism 27, and the driving chip 202 is electrically connected to the driving mechanism 27 through the chip circuit board 201.

In this way, the driving chip 202 is fixed on the side surface of the driving mechanism 27 through the chip circuit board 201, and is electrically connected to the driving mechanism 27 through the chip circuit board 201, so that the structure between the driving chip 202 and the driving mechanism 27 is more compact, which is beneficial to reducing the volume of the first imaging module 20.

Specifically, the driving chip 202 is used for controlling the driving mechanism 27 to drive the moving element 25 to move along the optical axis of the first lens assembly 24, so that the first lens assembly 24 forms an image in focus on the first image sensor 26. The driving chip 202 is used for controlling the driving device 28 to drive the mounting seat 23 with the light reflecting element 22 to rotate around the rotation axis 29 according to the feedback data of the gyroscope 120. The driving chip 202 is further configured to control the driving device 28 to drive the mounting base 23 to move axially along the rotation axis 29 according to the feedback data of the gyroscope 120.

The driving chip 202 is further configured to control the driving device 28 to drive the mounting base 23 to rotate around the central axis 282 of the arc-shaped guide 281 along the arc-shaped guide 281 and move along the axial direction of the central axis 282 according to the feedback data of the gyroscope 120.

In some embodiments, the first imaging module 20 includes a sensor circuit board 203, the first image sensor 26 is fixed on the sensor circuit board 203, the chip circuit board 201 includes a mounting portion 2011 and a connecting portion 2022, the mounting portion 2011 is fixed on a side surface of the driving mechanism 27, the driving chip 202 is fixed on the mounting portion 2011, and the connecting portion 2022 connects the mounting portion 2011 and the sensor circuit board 203.

In this way, the driving chip 202 can be electrically connected to the first image sensor 26 through the sensor circuit board 203. Specifically, the connection portion 2022 may be fixedly connected to the sensor circuit board 203 by soldering.

In one example, when assembling the first imaging module 20, the driving chip 202 may be fixed on the chip circuit board 201, then the chip circuit board 201 with the driving chip 202 is connected with the sensor circuit board 203 by soldering, and finally the chip circuit board 201 with the driving chip 202 is fixed on the side of the driving mechanism 27.

The chip circuit board 201 may be fixedly connected to the driving mechanism 27 by soldering, bonding, or the like.

It should be noted that the fixing of the chip circuit board 201 on the side of the driving mechanism 27 may refer to the contact fixing of the chip circuit board 201 and the side of the driving mechanism 27, or may refer to the fixed connection of the chip circuit board 201 and the side of the driving mechanism 27 through other components.

In the present embodiment, the mounting portion 2011 is a rigid circuit board, the connection portion 2022 is a flexible circuit board, and the mounting portion 2011 is attached to the side surface of the drive mechanism 27.

Thus, the mounting portion 2011 is made of a rigid circuit board, so that the mounting portion 2011 has good rigidity and is not easily deformed, and the mounting portion 2011 is favorably fixedly connected with the side surface of the driving mechanism 27. The mounting portion 2011 may be bonded to a side surface of the drive mechanism 27. In addition, the connection portion 2022 is a flexible circuit board so that the chip circuit board 201 is easily deformed, so that the chip circuit board 201 is easily mounted on the side surface of the driving mechanism 27.

Of course, in other embodiments, the mounting portion 2011 may be a flexible circuit board.

In some embodiments, the housing 21 is formed with a relief hole 215, and the driving chip 202 is at least partially located in the relief hole 215 so as to be exposed from the housing 21. In this way, the driving chip 202 penetrates the housing 21, so that there is an overlapping portion between the driving chip 202 and the housing 21, which makes the structure between the driving chip 202 and the housing 21 more compact, and can further reduce the volume of the first imaging module 20.

It is understood that when there is a gap between the side of the driving mechanism 27 and the housing 21, the driving chip 202 is partially located in the relief hole 215.

Preferably, the shape and size of the avoiding hole 215 are matched with those of the driving chip 202. For example, the size of the avoiding hole 215 is slightly larger than that of the driving chip 202, and the shape of the avoiding hole 215 is the same as that of the driving chip 202.

In the present embodiment, the avoiding hole 215 is formed in the side wall 214 of the housing 21. It is understood that relief holes 215 extend through both the interior and exterior sides of sidewall 214. Of course, in other embodiments, the avoiding hole 215 may be formed in the top wall 213 of the housing 21.

In one embodiment, the first imaging module 20 further includes a shielding can 204, and the shielding can 204 is fixed on the chip circuit board 201 and covers the driving chip 202. In this way, the shielding case 204 can protect the driving chip 202 from physical impact. In addition, the shielding case 204 can also reduce the electromagnetic influence on the driving chip 202.

The shield 204 may be made of a metal material. For example, the material of the shield 204 is stainless steel. In the present embodiment, the chip circuit board 201 is fixed to the mounting portion 2011, and in this case, the mounting portion 2011 is preferably a rigid circuit board or a plate material in which a flexible circuit board is combined with a reinforcing plate.

Referring to fig. 14, in the present embodiment, the second imaging module 30 is an upright lens module, but in other embodiments, the second imaging module 30 may also be a periscopic lens module.

The second imaging module 30 includes a second lens assembly 31 and a second image sensor 32, the second lens assembly 31 is configured to image light onto the second image sensor 32, and an incident optical axis of the second imaging module 30 coincides with an optical axis of the second lens assembly 31.

In this embodiment, the second imaging module 30 can be a fixed focus lens module, and therefore, the number of lenses 241 of the second lens assembly 31 is small, so that the height of the second imaging module 30 is low, which is beneficial to reducing the thickness of the electronic device 1000.

The type of the second image sensor 32 may be the same as the type of the first image sensor 26 and will not be described in detail herein.

The third imaging module 40 has a structure similar to that of the second imaging module 30, for example, the third imaging module 40 is also an upright lens module. Therefore, the features of the third imaging module 40 refer to the features of the second imaging module 40, which are not described herein.

In some embodiments, the first imaging module 20, the second imaging module 30, and the third imaging module 40 are all fixed-focus lenses, that is, the effective focal lengths of the first imaging module 20, the second imaging module 30, and the third imaging module 40 are all fixed, and the respective focal lengths of the first imaging module 20, the second imaging module 30, and the third imaging module 40 are not adjustable.

The camera assembly 100 satisfies the following conditions:

f2＜f3＜f1；

1＜f3/f2≤5；

5＜f1/f2≤10；

wherein f1 is the equivalent focal length of the first imaging module 20, f2 is the equivalent focal length of the second imaging module 30, and f3 is the equivalent focal length of the third imaging module 40.

In this way, the first imaging module 20 adopts a periscopic imaging module, so that the first imaging module 20 and the second imaging module 30 cooperate to obtain an optical zoom effect greater than 5 times. In addition, the second imaging module 30 and the third imaging module 40 cooperate to obtain an optical zoom effect greater than 1 time and less than or equal to 5 times. Therefore, the first imaging module 20, the second imaging module 30 and the third imaging module 40 cooperate to enable the camera assembly 100 to achieve 1-10 times of optical zooming, and improve the shooting effect of the camera assembly 100.

Generally, it is used to convert the imaging view angles on the photosensitive elements with different sizes into the lens focal length corresponding to the same imaging view angle on a 135 film camera (the photosensitive surface of the 135 film camera is fixed, and the specification of a 35mm film is fixed), and this converted focal length is the equivalent focal length of the 135 film camera, i.e. the equivalent focal length. Since the size of the light-sensing device (CCD or CMOS) of the digital camera is different (e.g. 1/2.5 inch, 1/1.8 inch, etc.) according to the camera, the angle of view of the image formed by the lens with the same focal length is different for digital cameras with light-sensing devices of different sizes. However, it is the shooting range (the size of the angle of view) of the camera that is really significant for the user, i.e. people pay more attention to the equivalent focal length rather than the actual focal length.

In one example, f3/f2 is 1.5, 2, 2.5, 3, 4, or 5, etc. That is, the second imaging module 30 and the third imaging module 40 can achieve 1.5 times, 2 times, 2.5 times, 3 times, 4 times or 5 times of optical zooming in cooperation. Preferably, in one example, 1 < f3/f2 ≦ 3. f1/f2 can be 6, 7, 8, 9 or 10. Alternatively, the first imaging module 20 and the second imaging module 30 may cooperate to achieve 6 times, 7 times, 8 times, 9 times, or 10 times.

When f1/f2 is greater than 10, the effective focal length f1 of the first imaging module 20 is larger, which also results in a larger size of the first image sensor, resulting in a larger size of the first imaging module 20, which is not favorable for the light and thin design of the electronic device 1000. Therefore, the optical zoom factor of the camera assembly 100 is controlled within 10 times, which not only can meet the photographing requirement of the user, but also can ensure the lightness and thinness of the electronic device 1000.

In one embodiment, the second imaging module 30 is a main shooting camera. In other words, in a general photographing situation, the second imaging module 30 is turned on to perform photographing. The first imaging module 20 and the third imaging module 40 can be used as a sub-camera, and when a user needs to zoom in to shoot an image, the first imaging module 20 or the third imaging module 40 is turned on.

In one example, f3/f2 is 2 and f1/f2 is 10. At this time, the camera assembly 100 may implement a 1-fold, 2-fold, or 10-fold optical zoom effect. When the user starts the shooting function of the electronic device 1000, the second imaging module 30 is started to acquire a pre-shot scene; when the user selects the 2-time magnification effect in the pre-shot scenery, the second imaging module 30 is closed, and the third imaging module 40 is opened, so that the third imaging module 40 can obtain the shot scenery magnified by 2 times; when the user selects the 10-fold magnification effect in the pre-photographed scene, the second imaging module 30 is turned off and the first imaging module 20 is turned on, so that the first imaging module 20 can acquire the photographed scene magnified by 10. Thus, it can be understood that the camera assembly 100 can obtain an image of the pre-shot scene with better quality because the image magnification of the pre-shot scene is obtained by the optical zoom.

In one embodiment, the combination of the first imaging module 20, the second imaging module 30, and the third imaging module 40 of the camera assembly 100 is as shown in the following table one:

table one:

in the present embodiment, the light variation ratio refers to a ratio of the equivalent focal length of the other imaging modules to the equivalent focal length of the second imaging module 30.

In another embodiment, the combination of the first imaging module 20, the second imaging module 30, and the third imaging module 40 of the camera assembly 100 is as shown in table two below:

table two:

in yet another embodiment, the combination of the first imaging module 20, the second imaging module 30, and the third imaging module 40 of the camera assembly 100 is as shown in table three below:

table three:

it should be noted that the number of the third imaging modules 40 may be multiple, as shown in the above table one, table two and table three, the multiple third imaging modules 40 enable the second imaging module 30 to cooperate with the third imaging module 40 to achieve more zoom factors, which is beneficial to improve the shooting effect of the electronic device 1000.

In some embodiments, the number of the first imaging modules 20 is multiple, and the equivalent focal lengths of the multiple first imaging modules 20 are all different. That is, the number of imaging modules of the camera assembly 100 may be greater than 3. In this manner, camera assembly 100 may achieve multiple optical zoom multiples between 5-10.

In one example, the number of the first imaging modules 20 is 3, which are the first imaging module I, the first imaging module II and the first imaging module III, respectively, wherein a ratio of an equivalent focal length of the first imaging module I to an equivalent focal length of the second imaging module 30 is about 7, a ratio of an equivalent focal length of the first imaging module II to an equivalent focal length of the second imaging module 30 is about 9, and a ratio of an equivalent focal length of the first imaging module III to an equivalent focal length of the second imaging module 30 is about 10. In other words, the first imaging module I and the second imaging module 30 cooperate to achieve a 7-fold optical zoom for the camera head assembly 100. The first imaging module II cooperates with the second imaging module 30 to achieve 9 times optical zoom for the camera head assembly 100. The first imaging module III cooperates with the second imaging module 30 to achieve a 10-fold optical zoom for the camera assembly 100.

In one embodiment, the combination of the first imaging module 20, the second imaging module 30, and the third imaging module 40 of the camera assembly 100 is as follows:

table four:

in some embodiments, the resolution of the first imaging module 20 is the same as the resolution of the second imaging module 30. Thus, under the same resolution, the first imaging module 20 and the second imaging module 30 cooperate to realize an optical zoom larger than 5 times, so that the image quality of the enlarged pre-shot scene is better.

In one example, the resolution of the first imaging module 20 and the resolution of the second imaging module 30 are both 8M.

Of course, in other embodiments, the resolution of the first imaging module 20 and the resolution of the second imaging module 30 may not be the same. For example, the resolution of the first imaging module 20 is 12M, while the resolution of the second imaging module 30 is 8M.

In some embodiments, the resolution of the third imaging module 40 is greater than or equal to 8M.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: numerous changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A camera assembly is characterized by comprising a first imaging module, a second imaging module and a third imaging module which are all fixed-focus lenses, wherein the first imaging module comprises a shell, a reflecting element and an image sensor, the reflecting element and the image sensor are arranged in the shell, the shell is provided with a light inlet, the reflecting element is used for steering incident light incident from the light inlet and then transmitting the incident light to the image sensor so that the image sensor can sense the incident light outside the first imaging module, and the second imaging module and the third imaging module are both vertical lens modules;

the camera assembly satisfies the following conditions:

f2＜f3＜f1；

1＜f3/f2≤5；

5＜f1/f2≤10；

2. A camera assembly according to claim 1, wherein 1 < f3/f2 ≦ 3.

3. The camera assembly of claim 1, wherein the number of the first imaging modules is plural, and the equivalent focal lengths of the plural first imaging modules are all different.

4. The camera assembly of claim 1, wherein a resolution of the first imaging module is the same as a resolution of the second imaging module.

5. The camera assembly of claim 4, wherein the resolution of the first imaging module and the resolution of the second imaging module are both 8M.

6. A camera assembly according to claim 1, wherein said first imaging module includes a mounting base to which said retroreflective element is secured and drive means for driving said mounting base with said retroreflective element to rotate about an axis of rotation that is perpendicular to the optical axis of said portal.

7. A camera assembly according to claim 6, wherein the drive means is formed with an arcuate track, the drive means being arranged to drive the mount along the arcuate track about a central axis of the arcuate track, the central axis coinciding with the axis of rotation.

8. A camera assembly according to claim 7, wherein the mount includes an arcuate surface arranged concentrically with and cooperating with the arcuate guide.

9. The camera assembly of claim 1, wherein the first imaging module further comprises:

the moving element is arranged on one side of the image sensor and is accommodated in the shell;

a lens assembly secured to the moving element; and

and the driving mechanism is used for driving the moving element to move along the optical axis of the lens assembly so as to enable the lens assembly to focus and image on the image sensor.

10. The camera assembly of claim 9, wherein the imaging module further comprises a chip circuit board and a driving chip, the chip circuit board is fixed on a side surface of the driving mechanism, the driving chip is fixed on a surface of the chip circuit board opposite to the driving mechanism, and the driving chip is electrically connected to the driving mechanism through the chip circuit board.

11. The camera assembly of claim 10, wherein the imaging module includes a sensor circuit board, the image sensor is fixed to the sensor circuit board, the chip circuit board includes an installation portion and a connection portion, the installation portion is fixed to a side of the driving mechanism, the driving chip is fixed to the installation portion, and the connection portion connects the installation portion and the sensor circuit board.

12. The camera assembly of claim 10, wherein the imaging module further comprises a shield case fixed to the chip circuit board and covering the driver chip.

13. An electronic device, comprising:

a battery; and

the camera assembly of any of claims 1-12, electrically connected to the battery.

14. The electronic device of claim 13, comprising:

a body;

the sliding module is used for sliding between a first position contained in the body and a second position exposed from the body, and the camera assembly is arranged in the sliding module.