Electronic device and camera module thereof

Abstract

Disclosed are an electronic device and a camera module thereof, which fall within the field of communication devices. The camera module comprises a lens assembly, a module bracket, a first limiting member, a first deformable member and a second deformable member. The lens assembly is rotatably connected to the module bracket, and the first limiting member is fixed on the lens assembly or the module bracket. The first deformable member and the second deformable member are both electro-deformable members, and the first deformable member and the second deformable member are arranged on two opposite sides of the first limiting member. When the lens assembly rotates relative to the module bracket in a first direction, the first deformable member deforms to measure a first rotation angle of the lens assembly. When the lens assembly rotates relative to the module bracket in a second direction, the second deformable member deforms to measure a second rotation angle of the lens assembly. The second direction is opposite the first direction.

Description

TECHNICAL FIELD

[0002] This application pertains to the field of communication device technologies,and specifically, to an electronic device and a camera module thereof.BACKGROUND

[0003] With development of technologies, electronic devices such as cell phonesplay an important role in people's production and life, and the electronic devices areusually equipped with cameras to facilitate shooting by users. When shooting handheld,users are likely to shake, resulting in blurry, ghosting, or other problems of images orvideos shot. In the related art, the camera module is typically equipped with an opticalanti-shake assembly to improve the definition of the images and videos shot. However,such optical anti-shake assembly can typically correct only image smear caused bycamera movement in three dimensions XYZ, but cannot resolve image smearing causedby rotation of the camera around its own optical axis.SUMMARY

[0004] This application discloses an electronic device and a camera module thereof,which can resolve the current problem of image smearing caused by the rotation of thecamera around its own optical axis.

[0005] To resolve the foregoing problem, embodiments of this application areimplemented as follows:

[0006] According to a first aspect, an embodiment of this application discloses acamera module including a lens assembly, a module bracket, a first limit member, a firstdeformable member, and a second deformable member, where the lens assembly isrotatably connected to the module bracket, the first limit member is fastened to the lensassembly or the module bracket, the first deformable member and the seconddeformable member are both electro-deformable members, the first deformablemember is disposed on one side of the first limit member, and the second deformablemember is disposed on the other side of the first limit member.

[0007] In a case that the lens assembly rotates with respect to the module bracketalong a first direction, the first deformable member can deform, so that a first rotationangle of the lens assembly with respect to the module bracket is measured; and in a casethat the lens assembly rotates with respect to the module bracket along a seconddirection, the second deformable member can deform, so that a second rotation angleof the lens assembly with respect to the module bracket is measured, the seconddirection being opposite to the first direction.

[0008] According to a second aspect, an embodiment of this application disclosesan electronic device including the foregoing camera module.

[0009] This application discloses a camera module including a lens assembly, amodule bracket, a first limit member, a first deformable member, and a seconddeformable member. The first limit member is relatively fastened to the lens assemblyor the module bracket. The first deformable member and the second deformablemember are both electro-deformable members and are respectively disposed on twoopposite sides of the first limit member. When the camera module shakes and rotatesaround its own optical axis, the lens assembly and the module bracket rotate withrespect to each other around the optical axis of the lens assembly, so that the first limitmember presses the first deformable member (or the second deformable member) andthe first deformable member (or the second deformable member) deforms. Based onthe deformation amount of the first deformable member (or the second deformablemember), a relative rotation angle between the lens assembly and the module bracketcan be obtained. Based on the relative rotation angle, a preset voltage can be applied tothe first deformable member (or the second deformable member), allowing the firstdeformable member (or the second deformable member) to drive the lens assembly andthe module bracket to rotate reversely, thus restoring positions of the lens assembly andthe module bracket.

[0010] In summary, during the operation of the camera module, when the lensassembly rotates with respect to the shot region because the camera module shakes, thecamera module can measure the rotation angle and apply a corresponding voltage todrive the lens assembly to move reversely, compensating for the smearing generateddue to rotation of the camera module. This keeps a relative position (or a relative angle)of the lens assembly with respect to the shot region unchanged, avoiding imagesmearing caused by the rotation of the camera module, thus improving the imagingquality of camera.BRIEF DESCRIPTION OF DRAWINGS

[0011] The accompanying drawings described herein are intended for betterunderstanding of this application, and constitute a part of this application. Exemplaryembodiments and descriptions thereof in this application are intended to interpret thisapplication and do not constitute any improper limitation on this application. In theaccompanying drawings:

[0012] FIG. 1 is a schematic structural diagram of a camera module disclosedaccording to an embodiment of this application;

[0013] FIG. 2 is a cross-sectional diagram of a partial structure of a camera moduledisclosed according to an embodiment of this application; and

[0014] FIG. 3 is a schematic diagram of a circuit connection of a first deformablemember and a second deformable member in a camera module disclosed according toan embodiment of this application.

[0015] Reference numerals in the accompanying drawings are described as follows:110. lens assembly, 120. photosensitive chip,210. first limit member, 220. second limit member, 230. third limit member,240. elastic limit member, 250. limit structure,300. voltage processing assembly,410. first deformable member, and 420. second deformable member.DESCRIPTION OF EMBODIMENTS

[0016] To make the objectives, technical solutions, and advantages of thisapplication clearer, the following clearly and completely describes the technicalsolutions in the embodiments of this application with reference to the accompanyingdrawings in the embodiments of this application. Obviously, the describedembodiments are merely some but not all of the embodiments of this application. Allother embodiments obtained by a person of ordinary skill in the art based on theembodiments of this application without creative efforts shall fall within the protectionscope of this application.

[0017] The technical solutions disclosed in the embodiments of this application aredescribed in detail below with reference to the accompanying drawings.

[0018] As shown in FIG. 1 and FIG. 2, this application discloses a camera moduleincluding a lens assembly 110, a module bracket (not shown in the figure), a first limitmember 210, a first deformable member 410, and a second deformable member 420.Certainly, the camera module may further be provided with other components such asa photosensitive chip 120. The photosensitive chip 120 may be disposed on a side ofthe lens assembly 110 back away from a light incident side.

[0019] The lens assembly 110 may include at least one lens, and light outside thecamera module is incident to the camera module through the lens assembly 110. Themodule bracket provides a mounting base for the lens module, and the module bracketcan provide some protection for the lens assembly 110. The module bracket may bemade of metal or plastic in various shapes and specific structural forms. For example,the module bracket may be of a cylindrical structure. The module bracket surroundsoutside the lens assembly 110, with the bottom and at least part of a side of the lensassembly 110 surrounded by the module bracket, thus improving the service life of thecamera module.

[0020] The lens assembly 110 is rotatably connected to the module bracket. To bespecific, a rotation shaft may be disposed between the lens assembly 110 and themodule bracket, the rotation shaft extending along the optical axis of the lens assembly110. This can ensure that the lens assembly 110 can rotate around the optical axis of thelens assembly 110 with respect to the module bracket. Certainly, the lens assembly 110may be connected to the module bracket through other connection members, thusforming a rotational connection relationship between the lens assembly 110 and themodule bracket, which, for brevity, is not listed one by one herein.

[0021] The first limit member 210 may be of a plate structure or a block structure.This is not limited in this specification. Certainly, the first limit member 210 shouldhave a structural strength as required, thus ensuring that the first limit member 210 canprovide a limiting function for the first deformable member 410 and the seconddeformable member 420. Specifically, the first limit member 210 may be made ofmaterials such as plastic or metal. In addition, the first limit member 210 may befastened to the lens assembly 110 or module bracket by means of insertion, bonding,connection by a connection member, and the like.

[0022] In order to ensure that the first limit member 210 can provide a normal limitfunction, the first limit member 210 needs to be disposed between the lens assembly110 and the module bracket. For example, the first limit member 210 may be fastenedto the lens assembly 110, and specifically, the first limit member 210 may be fastenedto a side of the lens assembly 110 back away from the light indecent side, that is,between the bottom of the lens assembly 110 and the module bracket. Alternatively, thefirst limit member 210 may be fastened outside the side wall of the lens assembly 110and the module bracket surrounds outside the side wall of the lens assembly 110. Thiscan also ensure that the first limit member 210 is located between the lens assembly110 and the module bracket.

[0023] The first deformable member 410 and the second deformable member 420may be of the same structure or different structures. Optionally, both may be of anelongated or curved structure. The first deformable member 410 and the seconddeformable member 420 are both electro-deformable members. That is, the firstdeformable member 410 and the second deformable member 420 are both made of theelectro-deformable material. The electro-deformable material may be specificallypiezoelectric material, ion exchange polymer metal material, and the like. Suchmaterials can deform when energized. Correspondingly, when the electro-deformablematerial deforms, a voltage can be generated. In this application, monitoring on therelative rotation between the lens assembly 110 and the module bracket is implementedaccording to the principle of such material, and the material is used to drive the lensassembly 110 to rotate with respect to the module bracket, thus restoring the lensassembly 110 and the module bracket to an initial state for anti-shaking.

[0024] The first deformable member 410 is disposed on one side of the first limitmember 210 and the second deformable member 420 is disposed on the other side ofthe first limit member 210. In other words, the first deformable member 410 and thesecond deformable member 420 are respectively disposed on opposite sides of the firstlimit member 210. Thereby, when the lens assembly 110 rotates with respect to themodule bracket, the first limit member 210 can rotate with respect to the module bracket(or the lens assembly 110) such that the first limit member 210 can come in contactwith and press the first deformable member 410 or the second deformable member 420.

[0025] When the lens assembly 110 rotates with respect to the module bracket alonga first direction, the first deformable member 410 can deform, so that a first rotationangle of the lens assembly 110 with respect to the module bracket is measured; andwhen the lens assembly 110 rotates with respect to the module bracket along a seconddirection, the second deformable member 420 can deform, so that a second rotationangle of the lens assembly 110 with respect to the module bracket is measured. Thesecond direction is opposite to the first direction. Specifically, the first deformablemember 410 and the second deformable member 420 can be used for measuring rotationangles of the lens assembly 110 with respect to the module bracket along differentdirections, and the relative rotation direction between the lens assembly 110 and themodule bracket can be determined based on a voltage source.

[0026] As described above, the first limit member 210 may be fastened to the lensassembly 110 or the module bracket. For example, the first limit member 210 may befastened to the lens assembly 110, and optionally, both the first deformable member410 and the second deformable member 420 may be mounted on the module bracket.In the foregoing embodiment, when the lens assembly 110 and the module bracketrotate with respect to each other along the first direction, the first limit member 210 andthe first deformable member 410 can also move with respect to each other. During thecontinuous rotation of the first limit member 210 and the first deformable member 410after contact, the first limit member 210 can apply pressure to the first deformablemember 410, so that the first deformable member 410 deforms and further generates avoltage. Based on the voltage generated by the first deformable member 410, adeformation amount of the first deformable member 410 can be obtained, so as tofurther obtain a relative movement angle between the first limit member 210 and thefirst deformable member 410, that is, the relative rotation angle between the lensassembly 110 and the module bracket along the first direction.

[0027] Correspondingly, when the lens assembly 110 and the module bracket rotatewith respect to each other along the second direction, the first limit member 210 cancome in contact with and press the second deformable member 420. Based on a voltagegenerated by the second deformable member 420, a relative rotation angle between thelens assembly 110 and the module bracket in the second direction can also be obtained.It should be noted that according to parameters of, for example, shape and material ofthe first deformable member 410 (or the second deformable member 420) as well as aspecific value of the voltage generated by the first deformable member 410 (or thesecond deformable member 420), the deformation amount of the first deformablemember 410 (or the second deformable member 420) can be obtained. Thereby, basedon the deformation amount with reference to initial positions of the first limit member210 and the first deformable member 410 (or the second deformable member 420), therelative rotation angle between the first limit member 210 and the first deformablemember 410 (or the second deformable member 420) can be obtained, thus obtainingthe relative rotation angle between the lens assembly 110 and the module bracket alongthe first direction (or the second direction).

[0028] In addition, based on the measured relative rotation angle between the lensassembly 110 and the module bracket along the first direction (or the second direction),a preset voltage can be applied to the first deformable member 410 (or the seconddeformable member 420), such that the first deformable member 410 (or the seconddeformable member 420) produces a corresponding amount of deformation under theaction of the voltage. In this way, the first deformable member 410 deforms itself todrive the first limit member 210, so as to drive the lens assembly 110 and the modulebracket to rotate along the second direction (or the first direction), so that the lensassembly 110 and the module bracket are restored to the initial state for anti-shaking.

[0029] Specifically, the camera module or the electronic device containing suchcamera module may be provided with a voltage processing assembly 300. As shown inFIG. 3, the voltage processing assembly may be connected to a power supply, and thevoltage processing assembly 300 may specifically include a controller, a voltage tester,and a voltage outputter. As shown in FIG. 3, two opposite ends of each of the firstdeformable member 410 and the second deformable member 420 can be bothelectrically connected to the voltage processing assembly 300 through connectionstructures such as wires. When the first deformable member 410 (or the seconddeformable member 420) is pressed, the voltage generated by the first deformablemember 410 can be transmitted to the voltage processing assembly 300 through thewire. The voltage tester can test the generated voltage, so as to determine thedeformation amount of the first deformable member 410 (or the second deformablemember 420) according to a preset condition. The controller can determine a relativerotation angle between the lens assembly 110 and the module bracket based on thedeformation amount, thus controlling, based on the rotation angle, the voltage outputterto output a corresponding voltage. This allows the first deformable member 410 (or thesecond deformable member 420) to actively deform, driving the lens assembly 110 andthe module bracket to rotate with respect to each other for restoring the position.

[0030] This application discloses a camera module including a lens assembly 110,a module bracket, a first limit member 210, a first deformable member 410, and asecond deformable member 420. The first limit member 210 is relatively fastened tothe lens assembly 110 or the module bracket. The first deformable member 410 and thesecond deformable member 420 are both electro-deformable members and arerespectively disposed on two opposite sides of the first limit member 210. When thecamera module shakes and rotates around its own optical axis, the lens assembly 110and the module bracket rotate with respect to each other around the optical axis of thelens assembly 110. This makes the first limit member 210 press the first deformablemember 410 (or the second deformable member 420), so as to deform the firstdeformable member 410 (or the second deformable member 420). Based on thedeformation amount of the first deformable member 410 (or the second deformablemember 420), a relative rotation angle between the lens assembly 110 and the modulebracket can be obtained. Based on the relative rotation angle, a preset voltage can beapplied to the first deformable member 410 (or the second deformable member 420),allowing the first deformable member 410 (or the second deformable member 420) todrive the lens assembly 110 and the module bracket to rotate reversely, thus restoringpositions of the lens assembly 110 and the module bracket.

[0031] In summary, during the operation of the camera module, when the lensassembly 110 rotates with respect to the shot region because the camera module shakes,the camera module can measure the rotation angle and apply a corresponding voltageto drive the lens assembly 110 to move reversely, compensating for the smearinggenerated due to rotation of the camera module. This keeps a relative position (or arelative angle) of the lens assembly 110 with respect to the shot region unchanged,avoiding image smearing caused by the rotation of the camera module, thus improvingthe imaging quality of camera.

[0032] As described above, in a case that the first limit member 210 is fastened tothe lens assembly 110, the first deformable member 410 and the second deformablemember 420 can be both fastened to the module bracket, ensuring that the firstdeformable member 410 and the second deformable member 420 can normally providefunctions of angle measurement and driving for position restoration. In order to improvethe adjustment accuracy of the camera module, an end of the first deformable member410 back away from the first limit member 210 can be fastened to the module bracket,and correspondingly, an end of the second deformable member 420 back away from thefirst limit member 210 can be fastened to the module bracket. In this case, the entirestructures of the first deformable member 410 and the second deformable member candeform so as to implement angle measurement, and the entire structures of both candeform when energized to implement position restoration through driving. This can notonly maximize the utilization of the first deformable member 410 and the seconddeformable member 420 but also improve the measurement and adjustment accuracyof the lens assembly 110 to some extent, improving the anti-shaking effect.

[0033] In another embodiment of this application, optionally, as shown in FIGs. 1and 2, the camera module further includes a second limit member 220 and a third limitmember 230, the second limit member 220 being disposed on one side of the first limitmember 210 and the third limit member 230 being provided on the other side of thefirst limit member 210. That is, the second limit member 220 and the third limit member230 are respectively disposed on opposite sides of the first limit member 210.Specifically, the second limit member 220 and the third limit member 230 can be similarin structure to the first limit member 210 and can be of plate or block-shaped structuresthat can provide a limiting effect. Moreover, the second limit member 220 and the thirdlimit member 230 can alternatively be made of hard materials such as plastic or metal,thus ensuring that the second limit member 220 and the third limit member 230 bothcan provide a stable and reliable limiting effect.

[0034] Of the lens assembly 110 and the module bracket, one is fixedly connectedto the first limit member 210 and the other is connected to the second limit member 220and the third limit member 230, the first deformable member 410 being sandwichedbetween the second limit member 220 and the first limit member 210, and the seconddeformable member 420 being sandwiched between the third limit member 230 and thefirst limit member 210. In other words, as shown in FIG. 2, the second limit member220, the first deformable member 410, the first limit member 210, the seconddeformable member 420, and the third limit member 230 are arranged sequentially.

[0035] In the above technical solution, when the lens assembly 110 and the modulebracket rotate with respect to each other along the first direction, the first limit member210 and the second limit member 220 can rotate with respect to each other, specifically,getting closer to each other to press the first deformable member 410 locatedtherebetween. Therefore, a relative rotation angle between the lens assembly 110 andthe module bracket along the first direction can be obtained based on the deformationamount of the first deformable member 410. Then, based on the measured angle, apreset voltage can be applied to the first deformable member 410, allowing the firstdeformable member 410 to actively deform, thus driving the first limit member 210 andthe second limit member 220 to move with respect to each other. This makes the lensassembly 110 and the module bracket rotate with respect to each other along the seconddirection, thus restoring the position of the lens assembly 110 for anti-shaking. Certainly,in the above process, the third limit member 230 can also rotate with respect to the firstlimit member 210. However, the relative rotation process between the two does notinvolve the angle measurement and driving for position restoration, which, for brevity,is not described herein.

[0036] Correspondingly, with the lens assembly 110 and the module bracketrotating with respect to each other along the second direction, the first limit member210 and the third limit member 230 rotate with respect to each other, specifically,getting closer to each other to press the second deformable member 420 locatedtherebetween. The measurement process and driving process of the second deformablemember 420 are similar to those of the first deformable member 410, where the seconddeformable member 420 can drive the lens assembly 110 and the module bracket torotate for position restoration along the first direction, thus restoring the lens assembly110 and the module bracket to their initial positions.

[0037] In a case that the positions of the first deformable member 410 and thesecond deformable member 420 are limited by the second limit member 220 and thethird limit member 230, the first deformable member 410 and the second deformablemember 420 can be neither connected to the lens assembly 110 and the module bracket,and positions of the first deformable member 410 and the second deformable member420 are limited only by the first limit member 210, the second limit member 220, andthe third limit member 230, thus preventing the adverse impact on the measurementaccuracy and deformation accuracy of the first deformable member 410 and the seconddeformable member 420 in the interaction process of "deformation-electricitygeneration" due to the limitation of the connection relationship between the twodeformable members. This further improves the measurement accuracy of the rotationangle of the lens assembly 110 and can also improve the driving accuracy of the lensassembly 110. In addition, in the above embodiment, the first deformable member 410and the second deformable member 420 are less difficult to mount.

[0038] Optionally, a first spacing between a contact point between the firstdeformable member 410 and the first limit member 210 and an optical axis of the lensassembly 110 is equal to a second spacing between a contact point between the firstdeformable member 410 and the second limit member 220 and the optical axis of thelens assembly 110. In other words, the distance from the action point between the firstdeformable member 410 and the first limit member 210 to the center of the lensassembly 110 is equal to the distance from the action point of the first deformablemember 410 and the second limit member 220 to the center of the lens assembly 110,thus allowing for the same interaction effect of the first limit member 210 and thesecond limit member 220 on the first deformable member 410 when the first deformablemember 410 is pressed or energized to actively deform.

[0039] Correspondingly, a third spacing from a contact point between the seconddeformable member 420 and the first limit member 210 to the optical axis of the lensassembly 110 is equal to a fourth spacing from a contact point between the seconddeformable member 420 and the third limit member 230 to the optical axis of the lensassembly 110, allowing for the substantially same interaction effect of the first limitmember 210 and the third limit member 230 on the second deformable member 420.

[0040] Specifically, as described above, the first deformable member 410 may be abar-shaped structure member or the like. The extension direction of the first deformablemember 410 is perpendicular to a connection line between the midpoint of the firstdeformable member 410 and the optical axis of the lens assembly 110, such that thespacings between opposite ends of the first deformable member 410 and the optical axisof the lens assembly 110 are equal or substantially equal.

[0041] Both the first limit member 210 and the second limit member 220 may be inpoint or surface contact with the first deformable member 410. In the case of both thefirst limit member 210 and the second limit member 220 being in surface contact withthe first deformable member 410, the above contact points may be contact pointscorresponding to each other. For example, the contact points corresponding to eachother can include a first contact point between the center of one end face of the firstdeformable member 410 and the first limit member 210 and a second contact pointbetween the center of the other end face of the first deformable member 410 and thesecond limit member 220. Because the structure of the second deformable member 420is similar to that of the first deformable member 410, the two can be provided in thesubstantially same way and details are not repeated herein.

[0042] Further, the first limit member 210 and the second limit member 220 bothhave a limit plane. Specifically, the first limit member 210 and the second limit member220 both cooperate with the first deformable member 410 through the plane structure.This can improve the limiting effect on the first deformable member 410 to some extent.Optionally, the intersection line of the two limit planes is the straight line on which theoptical axis of the lens assembly 110 is located. In other words, the limit plane of thefirst limit member 210 and the limit plane of the second limit member 220 intersect andboth cross the optical axis of the lens assembly 110 or the straight line on which theoptical axis of the lens assembly 110 is located is located on the limit planes of both thefirst limit member 210 and the second limit member 220.

[0043] When the first deformable member 410 is energized, the first deformablemember 410 deforms and applies a first driving force and a second driving force to thefirst limit member 210 and the second limit member 220 respectively. In the foregoingtechnical solution, the direction of the first driving force is basically perpendicular tothe limit plane of the first limit member 210, and the direction of the second drivingforce is substantially perpendicular to the limit plane of the second limit member 220,such that the first driving force and the second driving force do not have other actioneffects, but only act on the first limit member 210 and the second limit member 220,thus allowing for relative rotation between the first limit member 210 and the secondlimit member 220. This can reduce the waste of driving force, improve the drivingefficiency, and reduce power consumption.

[0044] In addition, in the case of using the foregoing technical solution, the wholeforce of the relative rotation between the first limit member 210 and the second limitmember 220 can act substantially on the first deformable member 410, compressingand deforming the first deformable member 410, allowing for a more accurate value ofthe measured rotation angle between the lens assembly 110 and the module bracketthrough the first deformable member 410.

[0045] Correspondingly, the first limit member 210 and the third limit member 230both having a limit plane and the intersection line of the two limit planes being thestraight line on which the optical axis of the lens assembly 110 is located can improvethe driving efficiency of the second deformable member 420, reduce powerconsumption, and improve the measurement accuracy of the relative rotation anglebetween the lens assembly 110 and the module bracket through the second deformablemember 420.

[0046] Optionally, both the first deformable member 410 and the seconddeformable member 420 can be curved structure members, further enhancing the actioneffects of the two deformable members on the first limit member 210. In anotherembodiment of this application, both the first deformable member 410 and the seconddeformable member 420 can be spherical-structured components. This can enable thefirst deformable member 410 and the second deformable member 420 to meet therequirements of the above embodiment and reduce the processing and mountingdifficulties of the first deformable member 410 and the second deformable member 420.

[0047] As described above, the first limit member 210 can be fastened to the lensmodule or the module bracket. Optionally, the first limit member 210 is fixed to thelens assembly 110, reducing parts attached to the lens assembly 110 and the rotationdifficulty of the lens assembly 110.

[0048] As described above, the first limit member 210 may be provided at thebottom of the lens assembly 110, and in another embodiment of this application, asshown in FIG. 2, the first limit member 210 is provided outside the side wall of the lensassembly 110. In this case, the lens assembly 110 rotates a little, allowing the first limitmember 210 to move with the lens assembly 110, thus implementing higher sensingsensitivity of the first limit member 210 and improving the anti-shake performance ofthe camera module. The side wall of the lens assembly 110 surrounds the optical axisof the lens assembly 110, and correspondingly, the bottom of the lens assembly 110 isa structure perpendicular to the optical axis of the lens assembly 110.

[0049] Based on the foregoing embodiment, in the case that the camera module isprovided with the second limit member 220 and the third limit member 230, the secondlimit member 220 and the third limit member 230 may also be provided outside the sidewall of the lens assembly 110, and in the case that the first limit member 210 isconnected to the lens assembly 110, the second limit member 220 and the third limitmember 230 can both be fixedly connected to the module bracket.

[0050] In order to ensure that the first deformable member 410 does not movebetween the first limit member 210 and the second limit member 220 in a directionaway from the lens assembly 110, that is, to prevent the first deformable member 410from moving away from the lens assembly 110 along the axial direction of the lensassembly 110, a side of the first limit member 210 and a side the second limit member220 that are back away from the lens assembly 110 can approach each other, therebyholding the first deformable member 410 among the first limit member 210, the secondlimit member 220, and the lens assembly 110.

[0051] However, as described above, in order to improve the performance of thecamera module, the limit planes of the first limit member 210 and the second limitmember 220 can cross the straight line on which the optical axis of the lens assembly110 is located. In such case, a spacing between parts of the first limit member 210 andthe second limit member 220 closer to the lens assembly 110 is smaller, and a spacingbetween parts of the two limit members further away from the lens assembly 110 islarger, allowing the first limit member 210 and the second limit member 220 to form aflaring-structured member. This makes it impossible for the first limit member 210 andthe second limit member 220 to provide a limiting function for the first deformablemember 410. Accordingly, the second deformable member 420 also has the problemthat its position cannot be limited by the first limit member 210 and the third limitmember 230.

[0052] Based on this, optionally, as shown in FIGs. 1 and 2, the camera modulemay further include an elastic limit member 240. The elastic limit member 240 isconnected to a side of the second limit member 220 and a side of the third limit member230 that are back away from the lens assembly 110, and the first deformable member410 and the second deformable member 420 are both limited between the elastic limitmember 240 and a side wall of the lens assembly 110. In this case, the positions of thefirst deformable member 410 and the second deformable member 420 can be limitedusing the elastic limit member 240, preventing the first deformable member 410 andthe second deformable member 420 from moving in a direction away from the lensassembly 110, thus being able to provide normal functions of angle measurement anddriving for position restoration.

[0053] The elastic limit member 240 may be specifically made of a material withcertain elasticity such that when the first deformable member 410 is pressed by the firstlimit member 210 and the second limit member 220, the elastic limit member 240deforms elastically, providing a space for the first deformable member 410, thusensuring that the first deformable member 410 can deform normally. Correspondingly,for the deformation of the second deformable member 420 caused by pressure, thesecond deformable member 420 can also press the elastic limit member 240 so that thesecond deformable member 420 can deform normally.

[0054] Certainly, in order to ensure that both the first deformable member 410 andthe second deformable member 420 can stably fit the lens assembly 110, in addition tothe provision of the elastic limit member 240 on the side of the first limit member 210back away from the lens assembly 110, as shown in FIGs. 1 and 2, limit structures 250can be also respectively provided on the other two sides of the first limit member 210.This allows the first deformable member 410 and the second deformable member 420to be encapsulated and limited among the second limit member 220, the elastic limitmember 240, the third limit member 230, the lens assembly 110, and the two limitstructures 250.

[0055] Optionally, the first limit member 210 is provided in plurality, the firstdeformable member 410 is provided on one side of each first limit member 210 and thesecond deformable member 420 is provided on the other side. In this case, when thelens assembly 110 rotates with respect to the module bracket along the first direction,the rotation angle can be measured using the plurality of first deformable members 410together, thus further improving the angle measurement accuracy. In addition, the lensassembly 110 can be driven by the plurality of first deformable members 410 togetherto rotate with respect to the module bracket, improving the driving reliability.Correspondingly, when the lens assembly 110 rotates with respect to the module bracketalong the second direction, the rotation angle can be measured using a plurality ofsecond deformable members 420 together, thus improving the measurement andadjustment accuracy.

[0056] In a case that the first limit member 210, the first deformable member 410,and the second deformable member 420 are all provided in plurality, the second limitmember 220 and the third limit member 230 can be also provided in plurality, and theplurality of second limit members 220 and the plurality of third limit members 230 fitthe plurality of first limit members 210 in a one-to-one correspondence, furtherimproving the adjustment accuracy of the camera module.

[0057] Optionally, the plurality of first limit members 210 are equally spaced apartaround the optical axis of the lens assembly 110. In this case, the various parts of thelens assembly 110 are subjected to a uniform driving force, preventing the lensassembly 110 from being stuck due to force deflection during the rotation of the lensassembly 110 with respect to the module bracket, thus improving the reliability of thecamera module. Specifically, three, four, or more first limit members 210 may beprovided, thus ensuring a reliable fitting relationship between the lens assembly 110and the module bracket.

[0058] Based on the camera module disclosed in any one of the above embodiments,an embodiment of this application further provides an electronic device. The electronicdevice includes the camera module provided in any one of the above embodiments.Certainly, the electronic device further includes other devices such as a display module,a shell, and a battery, which, for brevity, is not described therein one by one.

[0059] The electronic device disclosed in the embodiment of this application maybe a smart phone, a tablet computer, an e-book reader, or a wearable device. Certainly,the electronic device may alternatively be another device, which is not limited in theembodiments of this application.

[0060] The foregoing embodiments of this application focus on the differencesbetween the embodiments. As long as the different features of improvement in theembodiments are not contradictory, they can be combined to form a more preferredembodiment. For brevity, details are not repeated here.

[0061] The foregoing descriptions are merely embodiments of this application andare not intended to limit this application. For persons skilled in the art, this applicationmay have various changes and variations. Any modification, equivalent replacement,improvement, or the like made without departing from the spirit and principle of thisapplication shall fall within the scope of claims of this application.

Claims

1. A camera module, comprising a lens assembly, a module bracket, a first limit member, a first deformable member, and a second deformable member, wherein the lens assembly is rotatably connected to the module bracket, the first limit member is fastened to the lens assembly or the module bracket, the first deformable member and the second deformable member are both electro-deformable members, the first deformable member is disposed on one side of the first limit member, and the second deformable member is disposed on the other side of the first limit member; and in a case that the lens assembly rotates with respect to the module bracket along a first direction, the first deformable member deforms, so that a first rotation angle of the lens assembly with respect to the module bracket is measured; and in a case that the lens assembly rotates with respect to the module bracket along a second direction, the second deformable member deforms, so that a second rotation angle of the lens assembly with respect to the module bracket is measured, the second direction being opposite to the first direction.

2. The camera module according to claim 1, wherein the camera module further comprises a second limit member and a third limit member, the second limit member is disposed on one side of the first limit member, the third limit member is disposed on the other side of the first limit member, one of the lens assembly and the module bracket is fixedly connected to the first limit member, the other of the lens assembly and the module bracket is fixedly connected to both the second limit member and the third limit member, the first deformable member is sandwiched between the second limit member and the first limit member, and the second deformable member is sandwiched between the third limit member and the first limit member.

3. The camera module according to claim 2, wherein a first spacing from a contact point between the first deformable member and the first limit member to an optical axis of the lens assembly is equal to a second spacing from a contact point between the first deformable member and the second limit member to the optical axis of the lens assembly; and / or a third spacing from a contact point between the second deformable member and the first limit member to the optical axis of the lens assembly is equal to a fourth spacing from a contact point between the second deformable member and the third limit member to the optical axis of the lens assembly.

4. The camera module according to claim 3, wherein the first limit member and the second limit member both have a limit plane, and an intersection line between the two limit planes is a straight line on which the optical axis of the lens assembly is located; and / or the first limit member and the third limit member both have a limit plane, and an intersection line between the two limit planes is a straight line on which the optical axis of the lens assembly is located.

5. The camera module according to claim 4, wherein the first deformable member and / or the second deformable member is a spherical-structured component.

6. The camera module according to claim 3, wherein the first limit member is disposed on a side wall of the lens assembly and the side wall surrounds the optical axis of the lens assembly.

7. The camera module according to claim 6, wherein the camera module further comprises an elastic limit member, the elastic limit member is connected to a side of the second limit member and a side of the third limit member that are back away from the lens assembly, and the first deformable member and the second deformable member are both disposed between the elastic limit member and a side wall of the lens assembly.

8. The camera module according to claim 1, wherein the first limit member is provided in plurality, and the first deformable member is provided on one side of each first limit member and the second deformable member is provided on the other side.

9. The camera module according to claim 8, wherein the plurality of first limit members are spaced apart equally around the optical axis of the lens assembly.

10. An electronic device, wherein the electronic device comprises the camera module according to any one of claims 1 to 9.