WO2022228112A1 - 摄像模组 - Google Patents
摄像模组 Download PDFInfo
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- WO2022228112A1 WO2022228112A1 PCT/CN2022/086337 CN2022086337W WO2022228112A1 WO 2022228112 A1 WO2022228112 A1 WO 2022228112A1 CN 2022086337 W CN2022086337 W CN 2022086337W WO 2022228112 A1 WO2022228112 A1 WO 2022228112A1
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- frame
- driving
- carrier
- camera module
- friction
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
- H04N23/682—Vibration or motion blur correction
- H04N23/685—Vibration or motion blur correction performed by mechanical compensation
- H04N23/687—Vibration or motion blur correction performed by mechanical compensation by shifting the lens or sensor position
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
Definitions
- the present application relates to the field of camera modules, and in particular to a camera module, which adopts a novel piezoelectric actuator as a driving element to meet the driving requirements of the camera module.
- the camera module adopts a novel piezoelectric actuator.
- the actuator acts as a driving element to move the optical lens for optical image stabilization.
- the piezoelectric actuator is arranged in the camera module with a reasonable arrangement scheme, so as to meet the structural design requirements and size design requirements of the camera module.
- the existing driving element for driving the optical component is an electromagnetic motor, for example, a voice coil motor (Voice Coil Motor: VCM), a shape memory alloy actuator (Shape of Memory Alloy Actuator: SMA), and the like.
- VCM Voice Coil Motor
- SMA Shape of Memory Alloy Actuator
- the existing voice coil motor and shape memory alloy driver are only suitable for driving optical components with a weight of less than 100mg, that is, if the weight of the optical lens exceeds 100mg, the existing driver will not be able to meet the application requirements of the camera module .
- the existing voice coil motor is equipped with a coil and a magnet.
- the internal magnetic fields will interact with each other, causing the magnets to move or shake, reducing the stability of the drive control. .
- the new type of driver can not only meet the driving requirements for the optical performance adjustment of the camera module, but also meet the development of light weight and thinning of the camera module. need.
- An advantage of the present application is to provide a camera module, wherein the camera module adopts a novel piezoelectric actuator as a driving element to not only provide a sufficiently large driving force, but also provide higher precision and The driving performance with longer stroke can meet the requirement of adjusting the optical performance of the camera module, for example, the requirement of optical image stabilization.
- Another advantage of the present application is to provide a camera module, wherein the piezoelectric actuator has a relatively small size, so as to better adapt to the development trend of light and thin camera modules.
- Another advantage of the present application is to provide a camera module, wherein the piezoelectric actuator is arranged in the camera module by adopting a reasonable arrangement scheme to meet the structure and size requirements of the camera module.
- a camera module which includes:
- a photosensitive assembly comprising: a circuit board and a photosensitive chip electrically connected to the circuit board;
- the frame carrier assembly mounted on the photosensitive assembly includes a first frame carrier, a second frame carrier externally provided on the first frame carrier, and an outer frame carrier externally provided on the second frame carrier;
- a drive assembly comprising: a first drive element, a first preload part, a second drive element and a second preload part, the first drive element and the second drive element being implemented as piezoelectric actuators, wherein , the first driving element presses against the first frame carrier in a frictional contact manner through the first pre-compression member, and is configured to drive the first frame carrier to drive the optical lens in a direction perpendicular to the moving in the plane of the optical axis to perform optical anti-shake in the first direction; wherein, the second driving element abuts against the second frame carrier in a frictional contact manner through the second preloading member, and is held by the second frame carrier. is configured to drive the second frame carrier to drive the first frame carrier to drive the optical lens to move in a plane perpendicular to the optical axis to perform optical image stabilization in a second direction, the first direction being vertical in the second direction.
- the friction traveling wave or standing wave drives the piezoelectric motor, including: a piezoelectric active part and a friction driving part drivably connected to the piezoelectric active part, wherein in the above After the piezoelectric actuator is turned on, the friction driving part is configured to provide a driving force for driving the first frame carrier or the second frame carrier under the action of the piezoelectric active part.
- the piezoelectric active part has a plurality of sets of first polarization regions and second polarization regions alternately arranged with each other, the first polarization regions and the second polarization regions have opposite polarization directions, wherein, after the piezoelectric actuator is turned on, the multiple groups of the first polarization regions and the second polarization regions that are alternately arranged deform in different directions to drive the
- the friction driving part moves along a preset direction in the manner of traveling wave or standing wave, so as to provide a driving force for driving the first frame carrier or the second frame carrier.
- the piezoelectric active part has a plurality of sets of first polarization regions and second polarization regions alternately arranged with each other, the first polarization regions and the second polarization regions have the same polarization direction, wherein, after the piezoelectric actuator is turned on, the plurality of groups of the first polarization regions and the second polarization regions alternately arranged with each other deform in different directions to drive
- the friction driving part moves along a preset direction in the manner of traveling wave or standing wave, so as to provide a driving force for driving the first frame carrier or the second frame carrier.
- the plurality of groups of the first polarized regions and the second polarized regions arranged alternately are on the same straight line.
- the friction driving part includes a plurality of friction driving elements spaced apart from each other, and the first end of each friction driving element is coupled to the piezoelectric active part.
- the plurality of friction driving elements are located in the middle region of the piezoelectric active part.
- the piezoelectric actuator further includes: a frictional connection layer stacked on the piezoelectric active part, each of the frictional driving elements is fixed to the first end of the frictional driving element
- the piezoelectric active part is coupled to the piezoelectric active part by means of a frictional connection layer.
- the plurality of end surfaces of the second ends of the plurality of friction driving elements opposite to the first ends are in the same plane.
- the driving assembly further includes a first friction actuating portion and a second friction actuating portion, and the first friction actuating portion is disposed between the first driving element and the Between the first frame carriers, the second friction actuating portion is provided between the second driving element and the second frame carrier.
- the first friction actuating part has a first surface and a second surface opposite to the first surface, the first surface abuts against the surface of the first frame carrier , the second surface is in contact with the end surface of the second end of at least one of the friction driving elements in the plurality of friction driving elements;
- the second friction actuating part has a third surface and a surface opposite to the third surface a fourth surface, the third surface abuts a surface of the second frame carrier, the fourth surface abuts an end face of the second end of at least one of the friction drive elements of the plurality of friction drive elements.
- the piezoelectric actuator has a length dimension of 10 mm or less, a width dimension of 1 mm or less, and a height dimension of 1 mm or less.
- the first driving element is clamped and disposed on the first frame carrier and the second frame carrier by the first pre-pressing member and the first friction actuating portion. Between the frame carriers, in such a way that the first drive element is in frictional contact against the first frame carrier.
- the first driving element is located on the side of the first frame carrier.
- the first driving element is located on the upper part of the first frame carrier.
- the first driving element is located at the lower part of the first frame carrier.
- the second driving element is sandwiched and disposed on the second frame carrier and the outer frame by the second pre-pressing member and the second friction actuating portion Between the carriers, the second drive element is in frictional contact against the second frame carrier in such a way that the second drive element is located on the side of the second frame carrier.
- the second driving element is sandwiched and disposed on the second frame carrier and the lens carrier by the second pre-pressing member and the second friction actuating portion In between, in such a way, the second driving element is in frictional contact against the second frame carrier, wherein the second driving element is located on the upper part of the second frame carrier.
- the driving assembly is further peripherally disposed on the outer frame carrier of the second frame carrier, wherein the second driving element passes through the second pre-pressing member and the second A second friction actuation portion is clamped between the second frame carrier and the outer frame carrier in such a way that the second drive element is in frictional contact against the second frame A carrier, wherein the second drive element is located at a lower portion of the second frame carrier.
- the driving assembly further includes a first guide mechanism disposed between the first frame carrier and the second frame carrier, and a first guide mechanism disposed between the second frame carrier and the second frame carrier.
- the second guide mechanism between the outer frame carriers.
- the driving assembly further includes a first guide mechanism disposed between the first frame carrier and the second frame carrier, and a first guide mechanism disposed between the second frame carrier and the second frame carrier.
- the second guide mechanism between the lens carriers.
- the driving assembly further includes a first guide mechanism disposed between the first frame carrier and the second frame carrier, and a first guide mechanism disposed between the second frame carrier and the second frame carrier.
- the second guide mechanism between the outer frame carriers.
- the first pre-compression member includes a first elastic element, and the first elastic element is disposed on the piezoelectric active part of the first driving element and the second frame carrier between, the first driving element is forced against the first frame carrier in a frictional contact manner by the elastic force of the first elastic element;
- the second preloading element includes a second elastic element, the first Two elastic elements are disposed between the piezoelectric active part of the second driving element and the outer frame carrier, so as to force the second driving element to be in frictional contact with the elastic force of the second elastic element the second frame carrier.
- the first pre-compression member includes a first elastic element, and the first elastic element is disposed on the piezoelectric active part of the first driving element and the second frame carrier between, the first driving element is forced against the first frame carrier in a frictional contact manner by the elastic force of the first elastic element;
- the second preloading element includes a second elastic element, the first Two elastic elements are disposed between the piezoelectric active part of the second driving element and the lens carrier, so as to force the second driving element against the lens carrier in a frictional contact manner by the elastic force of the second elastic element the second frame carrier.
- the first pre-compression member includes a first elastic element, and the first elastic element is disposed on the piezoelectric active part of the first driving element and the second frame carrier between, the first driving element is forced against the first frame carrier in a frictional contact manner by the elastic force of the first elastic element;
- the second preloading element includes a second elastic element, the first Two elastic elements are disposed between the piezoelectric active part of the second driving element and the outer frame carrier, so as to force the second driving element to be in frictional contact with the elastic force of the second elastic element the second frame carrier.
- the first elastic element and the second elastic element are implemented as elastic adhesives.
- the thickness dimension of the first elastic element and the second elastic element is between 10um and 50um.
- the first pre-pressing component includes a first magnetic attraction element disposed on the first frame carrier and a first magnetic attraction element disposed on the second frame carrier and corresponding to the first magnetic attraction the second magnetic attraction element of the element, so as to force the first driving element against the first frame in a frictional contact manner through the magnetic attraction between the first magnetic attraction element and the second magnetic attraction element a carrier;
- the second pre-compression component includes a third magnetic element disposed on the second frame carrier and a fourth magnetic element disposed on the outer frame carrier and corresponding to the third magnetic element, so as to The second driving element is forced against the second frame carrier in a frictional contact manner through the magnetic attraction between the third magnetic element and the magnetic element.
- the first pre-pressing component includes a first magnetic attraction element disposed on the first frame carrier and a first magnetic attraction element disposed on the second frame carrier and corresponding to the first magnetic attraction the second magnetic attraction element of the element, so as to force the first driving element against the first frame in a frictional contact manner through the magnetic attraction between the first magnetic attraction element and the second magnetic attraction element a carrier;
- the second pre-pressing component includes a third magnetic element disposed on the second frame carrier and a fourth magnetic element disposed on the lens carrier and corresponding to the third magnetic element, so as to pass The magnetic attraction between the first magnetic attraction element and the second magnetic attraction element forces the first driving element against the first frame carrier in a frictional contact manner.
- the first pre-pressing component includes a first magnetic attraction element disposed on the first frame carrier and a first magnetic attraction element disposed on the second frame carrier and corresponding to the first magnetic attraction the second magnetic attraction element of the element, so as to force the first driving element against the first frame in a frictional contact manner through the magnetic attraction between the first magnetic attraction element and the second magnetic attraction element a carrier;
- the second pre-compression component includes a third magnetic element disposed on the second frame carrier and a fourth magnetic element disposed on the outer frame carrier and corresponding to the third magnetic element, so as to The second driving element is forced against the second frame carrier in a frictional contact manner through the magnetic attraction between the third magnetic element and the magnetic element.
- a camera module which includes:
- a photosensitive assembly comprising: a circuit board and a photosensitive chip electrically connected to the circuit board;
- the lens assembly held on the photosensitive path of the photosensitive assembly includes: a lens carrier and an optical lens mounted on the lens carrier, wherein the optical lens is provided with an optical axis;
- a driving assembly comprising: a first carrying frame, a first driving element and a first preloading member, wherein the photosensitive assembly is mounted on the first carrying frame, and the first driving element is implemented as piezoelectric actuation wherein the first driving element presses against the first carrying frame in a frictional contact manner through the first pre-pressing member, and is configured to drive the first carrying frame to drive the photosensitive assembly in the In-plane movement perpendicular to the optical axis for optical image stabilization.
- the driving assembly further includes a second carrying frame, a second driving element and a second pre-pressing component, wherein the second carrying frame is externally disposed on the first carrying frame,
- the second drive element is embodied as a piezoelectric actuator, wherein the second drive element is in frictional contact with the second carrier frame by the second pre-compression member and is configured to drive
- the second carrier frame drives the first carrier frame to drive the photosensitive component to move in a plane perpendicular to the optical axis to perform optical anti-shake.
- the piezoelectric actuator includes: a piezoelectric active part and a friction driving part drivably connected to the piezoelectric active part, wherein in the piezoelectric actuator After the actuator is turned on, the friction driving part is configured to provide a driving force for driving the first carrying frame or the second carrying frame under the action of the piezoelectric active part.
- the piezoelectric active part has a plurality of sets of first polarization regions and second polarization regions alternately arranged with each other, the first polarization regions and the second polarization regions have opposite polarization directions, wherein, after the piezoelectric actuator is turned on, the multiple groups of the first polarization regions and the second polarization regions that are alternately arranged deform in different directions to drive the
- the friction driving part moves along a preset direction in the manner of traveling wave or standing wave, so as to provide a driving force for driving the first bearing frame or the second bearing frame.
- the friction driving part includes a plurality of friction driving elements spaced apart from each other, and the first end of each friction driving element is coupled to the piezoelectric active part.
- the piezoelectric actuator further includes: a frictional connection layer stacked on the piezoelectric active part, each of the frictional driving elements is fixed to the first end of the frictional driving element
- the piezoelectric active part is coupled to the piezoelectric active part by means of a frictional connection layer.
- the plurality of end faces of the second ends of the plurality of friction driving elements opposite to the first ends are in the same plane.
- the driving assembly further includes a first friction actuating portion and a second friction actuating portion, and the first friction actuating portion is disposed between the first driving element and the Between the first bearing frames, the second friction actuating portion is disposed between the second driving element and the second bearing frame.
- the first friction actuating part has a first surface and a second surface opposite to the first surface, and the first surface is in contact with the surface of the first carrying frame , the second surface is in contact with the end surface of the second end of at least one of the friction driving elements in the plurality of friction driving elements;
- the second friction actuating part has a third surface and a surface opposite to the third surface a fourth surface, the third surface abuts against a surface of the second carrier frame, and the fourth surface abuts against an end face of the second end of at least one of the friction driving elements among the plurality of friction driving elements.
- the first carrier frame has a first groove formed concavely on its surface, and the first friction actuating portion is disposed in the first groove; and/or, the second carrier frame has a second groove concavely formed on its surface, and the second friction actuating portion is disposed in the second groove.
- the length of the first groove and the second groove is greater than the length dimension of the piezoelectric actuator, and the width dimension of the piezoelectric actuator is less than or equal to The width dimension of the first groove and the second groove.
- the piezoelectric actuator has a length dimension of 20 mm or less, a width dimension of 1 mm or less, and a height dimension of 1 mm or less.
- the first driving element is sandwiched and disposed on the first carrier frame and the second through the first pre-pressing member and the first friction actuating portion. Between the carrier frames, in such a way, the first drive element abuts against the first carrier frame in a frictional contact manner.
- the first driving element is located at the side of the first carrying frame.
- the first driving element is located on the upper part of the first carrying frame.
- the first driving element is located at the lower part of the first carrying frame.
- the driving assembly further includes an outer frame externally disposed on the second carrying frame, wherein the second driving element passes through the second pre-pressing member and the second The frictional actuation portion is sandwiched between the second carrier frame and the outer frame in such a way that the second drive element is in frictional contact against the second carrier frame, wherein , the second driving element is located on the side of the second carrying frame.
- the second driving element is clamped and disposed on the second carrier frame and the lens carrier by the second pre-pressing member and the second friction actuating portion In this way, the second driving element abuts against the second carrying frame in a frictional contact manner, wherein the second driving element is located on the upper part of the second carrying frame.
- the driving assembly is further peripherally disposed on the outer frame of the second carrying frame, wherein the second driving element passes through the second pre-pressing member and the second friction
- the actuating portion is sandwiched between the second carrying frame and the outer frame, in such a way that the second driving element is in frictional contact against the second carrying frame, wherein,
- the second drive element is located in the lower part of the second carrier frame.
- the driving assembly further includes a first guide mechanism disposed between the first carrying frame and the second carrying frame, and a first guiding mechanism disposed between the second carrying frame and the second carrying frame.
- the second guide mechanism between the outer frames.
- the driving assembly further includes a first guide mechanism disposed between the first carrying frame and the second carrying frame, and a first guiding mechanism disposed between the second carrying frame and the second carrying frame.
- the second guide mechanism between the lens carriers.
- the driving assembly further includes a first guide mechanism disposed between the first carrying frame and the second carrying frame, and a first guiding mechanism disposed between the second carrying frame and the second carrying frame.
- a second guide mechanism between the outer frames.
- the first pre-compression member includes a first elastic element, and the first elastic element is disposed on the piezoelectric active part of the first driving element and the second carrying frame between, the first driving element is forced against the first bearing frame in a frictional contact manner by the elastic force of the first elastic element;
- the second preloading element includes a second elastic element, the first Two elastic elements are disposed between the piezoelectric active part of the second driving element and the outer frame, so as to force the second driving element to abut against the outer frame in a frictional contact manner by the elastic force of the second elastic element the second carrying frame.
- the first pre-compression member includes a first elastic element, and the first elastic element is disposed on the piezoelectric active part of the first driving element and the second carrying frame between, the first driving element is forced against the first bearing frame in a frictional contact manner by the elastic force of the first elastic element;
- the second preloading element includes a second elastic element, the first Two elastic elements are disposed between the piezoelectric active part of the second driving element and the lens carrier, so as to force the second driving element against the lens carrier in a frictional contact manner by the elastic force of the second elastic element the second carrying frame.
- the first pre-compression member includes a first elastic element, and the first elastic element is disposed on the piezoelectric active part of the first driving element and the second carrying frame between, the first driving element is forced against the first bearing frame in a frictional contact manner by the elastic force of the first elastic element;
- the second preloading element includes a second elastic element, the first Two elastic elements are disposed between the piezoelectric active part of the second driving element and the outer frame, so as to force the second driving element to abut against the outer frame in a frictional contact manner by the elastic force of the second elastic element the second carrying frame.
- the first elastic element and the second elastic element are implemented as elastic adhesives.
- the thickness dimension of the first elastic element and the second elastic element is between 10um and 50um.
- the first pre-pressing component includes a first magnetic attraction element disposed on the first carrying frame and a first magnetic attraction element disposed on the second carrying frame and corresponding to the first magnetic attraction the second magnetic attraction element of the element, so as to force the first driving element against the first bearing in a frictional contact manner through the magnetic attraction between the first magnetic attraction element and the second magnetic attraction element a frame;
- the second pre-compression component includes a third magnetic attraction element disposed on the second carrier frame and a fourth magnetic attraction element disposed on the outer frame and corresponding to the third magnetic attraction element, so as to pass The magnetic attraction between the third magnetic element and the fourth magnetic element forces the second driving element against the second carrier frame in a frictional contact manner.
- the first pre-pressing component includes a first magnetic attraction element disposed on the first carrying frame and a first magnetic attraction element disposed on the second carrying frame and corresponding to the first magnetic attraction the second magnetic attraction element of the element, so as to force the first driving element against the first bearing in a frictional contact manner through the magnetic attraction between the first magnetic attraction element and the second magnetic attraction element a frame;
- the second pre-pressing component includes a third magnetic attraction element disposed on the second carrier frame and a fourth magnetic attraction element disposed on the lens carrier and corresponding to the third magnetic attraction element, so as to pass The magnetic attraction between the first magnetic attraction element and the second magnetic attraction element forces the first driving element against the first carrier frame in a frictional contact manner.
- the first pre-pressing component includes a first magnetic attraction element disposed on the first carrying frame and a first magnetic attraction element disposed on the second carrying frame and corresponding to the first magnetic attraction the second magnetic attraction element of the element, so as to force the first driving element against the first bearing in a frictional contact manner through the magnetic attraction between the first magnetic attraction element and the second magnetic attraction element a frame;
- the second pre-compression component includes a third magnetic attraction element disposed on the second carrier frame and a fourth magnetic attraction element disposed on the outer frame and corresponding to the third magnetic attraction element, so as to pass The magnetic attraction between the third magnetic element and the fourth magnetic element forces the second driving element against the second carrier frame in a frictional contact manner.
- FIG. 1 illustrates a schematic diagram of a camera module according to an embodiment of the present application.
- FIG. 2 illustrates a schematic diagram of a photosensitive component of the camera module according to an embodiment of the present application.
- FIG. 3 illustrates a schematic diagram of an optical lens, a frame carrier assembly and a driving assembly of the camera module according to an embodiment of the present application.
- FIG. 4 illustrates a schematic diagram of a piezoelectric actuator according to an embodiment of the application.
- FIG. 5 illustrates a schematic diagram of the piezoelectric actuator after being turned on according to an embodiment of the present application.
- FIG. 6 illustrates a schematic diagram of a variant implementation of the piezoelectric actuator according to embodiments of the present application.
- FIG. 7 illustrates another schematic diagram of the optical lens, the frame carrier assembly, and the driving assembly of the camera module according to an embodiment of the present application.
- FIG. 8 illustrates a schematic diagram of a variant implementation of the camera module according to an embodiment of the present application.
- FIG. 9 illustrates a schematic diagram of another variant implementation of the camera module according to the embodiment of the present application.
- FIG. 10 illustrates a schematic diagram of still another variant implementation of the camera module according to the embodiment of the present application.
- FIG. 11 illustrates a schematic diagram of still another variant implementation of the camera module according to the embodiment of the present application.
- FIG. 12 illustrates a schematic diagram of yet another variant implementation of the camera module according to the embodiment of the present application.
- FIG. 13 illustrates a schematic diagram of a camera module according to an embodiment of the present application.
- FIG. 14 illustrates a schematic diagram of a photosensitive component of the camera module according to an embodiment of the present application.
- FIG. 15 illustrates another schematic diagram of the camera module according to an embodiment of the present application.
- FIG. 16 illustrates a schematic diagram of a piezoelectric actuator according to an embodiment of the application.
- FIG. 17 illustrates a schematic diagram of the piezoelectric actuator after being turned on according to an embodiment of the present application.
- FIG. 18 illustrates a schematic diagram of a variant implementation of the piezoelectric actuator according to embodiments of the present application.
- FIG. 19 illustrates a schematic diagram of a variant implementation of the camera module according to an embodiment of the present application.
- FIG. 20 illustrates a schematic diagram of another variant implementation of the camera module according to an embodiment of the present application.
- FIG. 21 illustrates a schematic diagram of yet another variant implementation of the camera module according to an embodiment of the present application.
- FIG. 22 illustrates a schematic diagram of yet another variant implementation of the camera module according to an embodiment of the present application.
- FIG. 23 illustrates a schematic diagram of yet another variant implementation of the camera module according to an embodiment of the present application.
- FIG. 24 illustrates a schematic diagram of yet another variant implementation of the camera module according to an embodiment of the present application.
- FIG. 25 illustrates a partial schematic diagram of still another variant implementation of the camera module according to the embodiment of the present application.
- a camera module As shown in FIG. 1 , a camera module according to an embodiment of the present application is illustrated, which includes: a photosensitive assembly 10 , an optical lens 20 held on a photosensitive path of the photosensitive assembly 10 , a frame carrier assembly 30 , and a The driving component 40 for driving the optical lens 20 to perform optical anti-shake.
- the photosensitive assembly 10 includes a circuit board 11 , a photosensitive chip 12 electrically connected to the circuit board 11 , and a filter held on the photosensitive path of the photosensitive chip 12 .
- the component 13 wherein the circuit board 11 forms the mounting substrate of the photosensitive component 10 .
- the circuit board may be implemented as a printed circuit board (Printed Circuit Board, PCB), a software combination board, or a reinforced flexible circuit board (Flexible Printed Circuit, PFC).
- a reinforcing plate (not shown) may also be arranged under the circuit board 11, for example, a steel sheet is arranged under the circuit board, so as to strengthen all the The strength of the circuit board is improved and the heat dissipation performance of the photosensitive component is improved.
- the photosensitive assembly 10 further includes a bracket 14 disposed on the circuit board 11 , wherein the filter element 13 is mounted on the bracket 14 to be maintained on the photosensitive path of the photosensitive chip 12 .
- the specific implementation of the filter element 13 held on the photosensitive path of the photosensitive chip 12 is not limited by the present application.
- the filter element 13 may be implemented as a filter element The film is coated on the surface of a certain optical lens of the zoom lens group, so as to have the effect of filtering light.
- the photosensitive component 10 may further include a filter element bracket (not shown) installed on the bracket 14. There are diagrams), wherein the filter element 13 is held on the photosensitive path of the photosensitive chip 12 by being mounted on the filter element holder.
- the bracket 14 may be implemented as a plastic bracket, which is attached to the circuit board 11 through an adhesive.
- the bracket 14 may also be implemented as an integral bracket integrally formed on the circuit board 11 , such as a molded bracket, which is not limited by this application.
- the frame carrier assembly 30 is mounted on the photosensitive assembly 10 , wherein the frame carrier assembly 30 includes an outer frame carrier mounted on the bracket 14 33 .
- the second frame carrier 32 accommodated in the outer frame carrier 33 and the first frame carrier 31 accommodated in the second frame carrier 32 . That is, in this embodiment, the frame carrier assembly includes a first frame carrier 31 , a second frame carrier 32 externally provided on the first frame carrier 31 , and a second frame carrier 32 externally provided on the second frame carrier 32 .
- Outer frame carrier 33 is, a first frame carrier 31 , a second frame carrier 32 externally provided on the first frame carrier 31 , and a second frame carrier 32 externally provided on the second frame carrier 32 .
- the optical lens 20 is installed in the first frame carrier 31 , and in this way, the optical lens 20 is maintained on the photosensitive path of the photosensitive assembly 10 . That is, in this embodiment, the first frame carrier 31 forms a mounting carrier for the optical lens.
- the second frame carrier 32 and the outer frame carrier 33 there is a gap between the second frame carrier 32 and the outer frame carrier 33, and there is a gap between the first frame carrier 31 and the second frame carrier 32, that is, , there is an available space between the second frame carrier 32 and the outer frame carrier 33, wherein the available space can be used to install a driver for driving the movement of the second carrier frame 32; the first frame carrier There is a free space between 31 and the second frame carrier 32 , wherein the free space can be used to install a drive that drives the movement of the first frame carrier 31 .
- the selection and installation of the driver will be expanded in more detail in the subsequent description.
- the optical lens 20 includes a lens barrel 21 and at least one optical lens 22 installed in the lens barrel 21 .
- the resolution of the optical lens 20 is proportional to the number of the optical lenses 22 within a certain range, that is, the higher the resolution, the more the number of the optical lenses 22 .
- the optical lens 20 can be implemented as a one-piece lens, or a split-type lens, wherein, when the optical lens 20 is implemented as a one-piece lens, the optical lens 20 includes a lens barrel 21 , all the optical lenses 22 are installed in the lens barrel 21; and when the optical lens 20 is implemented as a split optical lens, the optical lens 20 is assembled from at least two parts of a single lens.
- the existing driving element for driving the optical component is an electromagnetic motor, for example, a voice coil motor (Voice Coil Motor: VCM), a shape memory alloy actuator (Shape of Memory Alloy Actuator: SMA), and the like.
- VCM Voice Coil Motor
- SMA Shape of Memory Alloy Actuator
- the existing voice coil motor and shape memory alloy driver are only suitable for driving optical components with a weight of less than 100mg, that is, if the weight of the optical lens exceeds 100mg, the existing driver will not be able to meet the application requirements of the camera module .
- the existing voice coil motor is equipped with a coil and a magnet.
- the internal magnetic fields will interact with each other, causing the magnets to move or shake, reducing the stability of the drive control. .
- the new type of driver can not only meet the driving requirements for the optical performance adjustment of the camera module, but also meet the development of light weight and thinning of the camera module. need.
- the new driver needs to meet the following requirements: relatively larger driving force, and better driving performance (specifically including: higher-precision driving control and longer driving journey).
- the present application proposes a piezoelectric actuator with a novel structure, which can meet the technical requirements of the camera module for the driver.
- the piezoelectric actuator is further arranged in the camera module in an appropriate arrangement manner, so that it meets the structural design requirements and size design requirements of the camera module.
- the piezoelectric actuator 100 according to an embodiment of the present application includes: a piezoelectric active part 110 and a friction driving part 120 drivably connected to the piezoelectric active part 110 , wherein, in the After the piezoelectric actuator 100 is turned on, the friction driving part 120 is configured to provide a driving force for driving the driven object under the action of the piezoelectric active part 110 .
- the piezoelectric active part 110 is implemented as a piezoelectric ceramic element, which has a strip-like structure.
- the piezoelectric active part 110 is a piezoelectric laminated structure, which has multiple groups of first polarization regions A1 and second polarization regions A2 arranged alternately with each other.
- the first polarization regions A1 and A2 are arranged alternately.
- the second polarization regions A2 have opposite polarization directions, wherein after the piezoelectric actuator 100 is turned on, multiple groups of the first polarization regions A1 and the second polarization regions A1 and the second polarization regions are alternately arranged.
- the polarization area A2 is deformed in different directions to drive the friction driving part 120 to move in a predetermined direction in the manner of traveling wave or standing wave, so as to provide a driving force for driving the component, as shown in FIG. 4 .
- the piezoelectric active part 110 has a plurality of sets of first polarized regions A1 and second polarized regions A2 arranged alternately with each other, the polarized regions A1 and The polarization directions of the polarization regions A2 are opposite.
- multiple groups of the polarization areas A1 and A2 that alternate with each other are arranged in a side-by-side manner, that is, multiple groups of the polarization areas A1 that alternate with each other are arranged in a side-by-side manner. and the polarization area A2 is on the same straight line.
- the piezoelectric active part 110 is electrically connected to an external excitation power supply through a wire, so that after the piezoelectric active part 110 is provided with power excitation, the piezoelectric active part 110 is powered by the reverse piezoelectric effect of the piezoelectric active part 110.
- the electroactive part 110 is deformed. It should be understood that the deformation of the piezoelectric active part 110 will drive the friction driving part 120 to move in the manner of traveling wave or standing wave, that is, the deformation of the piezoelectric active part 110 can be transmitted to the friction
- the driving part 120 provides driving force through the traveling wave or standing wave motion of the friction driving part 120 .
- each group of the first polarization region A1 and the second polarization region A2 may also have the same polarization direction, wherein, in the piezoelectric actuator 100 After being turned on, by inputting alternating voltage signals to each group of the first polarization area A1 and the second polarization area A2, multiple groups of the first polarization area A1 and the first polarization area A1 and the first polarization area A1 are alternately arranged.
- the polarization region A2 is deformed in different directions to drive the friction driving portion 120 to move along a predetermined direction in the form of a standing wave, which is not limited by the present application.
- the friction driving part 120 includes a plurality of friction driving elements 121 spaced apart from each other, wherein the first end of each friction driving element 121 is coupled to the In the piezoelectric active part 110 , the friction driving part 120 is driveably connected to the piezoelectric active part 110 in such a manner.
- the number of the plurality of friction driving elements 121 may be 2, 3, 4 or more, preferably, the number of the friction driving elements 121 exceeds 3 (ie, greater than or equal to 3). So that the piezoelectric actuator 100 can control the length of the piezoelectric actuator 100 while realizing the stable output of the linear driving force, so that it is suitable for being installed in a relatively small device such as a camera module. .
- the length dimension of the piezoelectric actuator 100 is almost equal to the dimension of the piezoelectric active part 110 (and the piezoelectric active part 110 has a long strip shape). In an embodiment, the length dimension of the piezoelectric actuator 100 is less than or equal to 20 mm, preferably, the length dimension thereof is less than or equal to 10 mm.
- the plurality of friction driving elements 121 are located in the middle region of the piezoelectric active part 110 , so that when the acted object is driven by the plurality of friction driving elements 121 , the driven object will move more smoothly and linearly.
- the friction driving element 121 has a columnar structure, which protrudes from the upper surface of the piezoelectric active part 110 . From the outside, the piezoelectric actuator 100 has a rack shape. It should be understood that in other examples of the present application, the friction driving element 121 may also be implemented in other shapes, for example, its cross-sectional shape may be set as a trapezoid, which is not limited by the present application.
- the at least three friction driving elements 121 are arranged equidistantly and alternately, which is conducive to improving the Driving stability of the piezoelectric actuator 100 .
- the second ends of the plurality of friction driving elements 121 opposite to the first ends have The plurality of end faces are on the same plane, for example, in the example shown in FIG. 3 , the end faces of the second ends of the plurality of friction driving elements 121 are on the same horizontal plane. That is, in this embodiment, the end surfaces of the second ends of the plurality of friction driving elements 121 form the same plane.
- a layer of friction material may be further applied on the plane (ie, the plane defined by the end surfaces of the second ends of the plurality of friction driving elements 121 ) to increase the frictional force .
- a mover is usually arranged on the upper surface of the friction driving part 120 to transmit the traveling wave or standing wave provided by the friction driving part 120 through the mover. Wave-like driving force and act on the driven object. That is, a friction actuating portion 130 (the friction actuating portion 130 serving as the mover) is provided between the friction driving portion 120 and the driven object, so that when the piezoelectric actuator 100 is guided When the friction driving part 120 is turned on, the traveling wave or standing wave motion of the friction driving part 120 will drive the friction driving part 130 to move linearly.
- the traveling or standing waves travel in opposite directions.
- FIG. 6 illustrates a schematic diagram of a variant implementation of the piezoelectric actuator 100 according to an embodiment of the present application.
- the piezoelectric actuator 100 further includes: a frictional connection layer 140 stacked on the piezoelectric active part 110 , each of the frictional driving elements 121 with its first One end is coupled to the piezoelectric active part 110 by being fixed to the frictional connection layer 140 .
- the frictional driving element 121 and the frictional connection layer 140 may have a one-piece structure.
- the frictional drive element 121 and the frictional connection layer 140 may have a split structure, ie, the two are separate components.
- the piezoelectric actuator 100 has a relatively more optimized size.
- the length dimension of the piezoelectric actuator 100 is less than or equal to 20 mm, preferably, the length dimension is less than or equal to 10 mm, for example, it may be 6 mm or 4.2 mm.
- the width dimension of the piezoelectric actuator 100 is less than or equal to 1 mm, preferably, the width dimension is less than or equal to 0.7 mm.
- the height dimension of the piezoelectric actuator 100 is less than or equal to 1 mm.
- the height dimension of the piezoelectric actuator 100 is determined by the dimensions of the piezoelectric active part 110 and the friction driving part 120 .
- the piezoelectric actuator 100 Compared with the traditional electromagnetic driver, the piezoelectric actuator 100 has the advantages of small size, large thrust and high precision. Quantitatively, the piezoelectric actuator 100 according to the embodiment of the present application can provide a driving force of 0.6N to 2N, which is sufficient to drive a component with a weight greater than 100 mg.
- the piezoelectric actuator 100 has other advantages compared to the traditional electromagnetic motor solution and memory alloy motor solution, including but not limited to: a relatively small size (with Slender shape), better response accuracy, relatively simpler structure, relatively simpler drive control, high product consistency, no electromagnetic interference, relatively larger stroke, short stabilization time, relatively small weight, etc.
- the camera module needs to be equipped with a driver that has a long driving stroke and needs to ensure better alignment accuracy.
- a driver that has a long driving stroke and needs to ensure better alignment accuracy.
- additional guide rods or ball guides need to be designed, and large-sized driving magnets/coils need to be adapted to the side of the lens, and balls, shrapnel, and suspension wires need to be installed.
- Other auxiliary positioning devices in order to accommodate more components, ensure structural strength and reserve structural gaps, often lead to large lateral dimensions of the module, complex structural design, and heavy module weight.
- the memory alloy motor solution is limited by the relatively small stroke that the memory alloy solution can provide in the same proportion, and there are reliability risks such as potential disconnection.
- the piezoelectric actuator 100 has a relatively simple structure, and the assembly structure is simpler.
- the size of the piezoelectric active part 110, the friction driving part 120 and other components are basically irrelevant to the size of the motion stroke, so it is used in optical zoom products.
- the piezoelectric actuator 100 can achieve the advantages of large thrust, small size, and small weight, and at the same time, it can be designed to match a larger stroke or heavier device weight, and the integration degree in the design is also higher.
- the piezoelectric actuator 100 pushes the object to be pushed to perform micron-scale motion in a frictional contact manner.
- the non-contact manner of driving the object to be pushed requires the electromagnetic force to counteract the gravity, and the frictional force It has the advantages of larger thrust, larger displacement and lower power consumption, and at the same time, the control accuracy is higher.
- the piezoelectric actuator 100 does not have a magnet coil structure, so there is no problem of magnetic interference.
- the piezoelectric actuator 100 can be self-locked by the friction between the components, so the abnormal shaking noise of the camera module can be reduced when the optical image stabilization is performed.
- the driving assembly 40 comprising: a first drive element 42 , a first pre-compression part 43 , a second drive element 45 , and a second pre-compression part 46 , wherein the first drive element 42 and the second drive element 45 are implemented as pressure Electric actuator 100 .
- the optical lens 20 is mounted on the first frame carrier 31 , and the first driving element 42 passes through the first pre-compression member 43 Abuts the first frame carrier 31 in a frictional contact manner, and is configured to drive the first frame carrier 31 to drive the optical lens 20 to move in a plane perpendicular to the optical axis to perform the first frame operation.
- the second frame carrier 32 is externally arranged on the first frame carrier 31 , wherein the second driving element 45 abuts against the second frame carrier 32 in a frictional contact manner through the second pre-pressing member 46 .
- the first direction is perpendicular to the second direction.
- the first direction is the X-axis direction
- the second direction is the Y-axis direction.
- the frictional contact of the first drive element 42 against the first frame carrier 31 means that there is a pre-pressure between the frictional drive portion 120 of the first drive element 42 and the first frame carrier 31 . , so that the friction driving part 120 of the first driving element 42 can drive the first frame carrier 31 by means of friction driving.
- the pre-pressure between the friction driving part 120 of the first driving element 42 and the first frame carrier 31 may be a direct pre-pressure or an indirect pre-pressure, wherein the direct pre-pressure represents the The friction driving part 120 of the first driving element 42 is in direct contact with the first frame carrier 31 to generate a pre-pressure therebetween; the indirect pre-pressure means that although the friction driving part of the first driving element 42 There is no direct contact between 120 and the first frame carrier 31, but there is still a pre-pressure between the two, so that the friction driving part 120 of the first driving element 42 can drive the first Frame carrier 31 .
- the frictional contact of the second drive element 45 against the second frame carrier 32 means that there is a predetermined gap between the frictional drive portion 120 of the second drive element 45 and the second frame carrier 32 .
- the pressure, and thus the friction driving part 120 of the second driving element 45, can drive the second frame carrier 32 by means of friction driving.
- the pre-pressure between the friction driving portion 120 of the second driving element 45 and the second frame carrier 32 may be a direct pre-pressure or an indirect pre-pressure, wherein the direct pre-pressure represents the The frictional drive portion 120 of the second drive element 45 is in direct contact with the second frame carrier 32 to generate a pre-pressure therebetween; the indirect pre-pressure means that although the frictional drive portion of the second drive element 45 There is no direct contact between 120 and the second frame carrier 32, but there is still a pre-pressure therebetween, so that the friction driving part 120 of the second driving element 45 can drive the second frame carrier 32 by friction driving. Frame carrier 32 .
- the first driving element 42 is clamped to the first frame carrier 31 and the first frame carrier 31 and the Between the second frame carriers 32 , in this way, the first driving element 42 abuts against the first frame carrier 31 in a frictional contact manner.
- the first pre-compression member 43 includes a first elastic element 431 , and the first elastic element 431 is disposed on the piezoelectric active part 110 of the first driving element 42 and the Between the second frame carriers 32 , the first driving element 42 is forced against the first frame carrier 31 in a frictional contact manner by the elastic force of the first elastic element 431 .
- the friction driving portion 120 of the first driving element 42 directly abuts against the surface of the outer side wall of the first frame carrier 31 , and accordingly, the elastic force provided by the first elastic element 431 can force the The friction driving portion 120 of the first driving element 42 abuts against the surface of the outer side wall of the first frame carrier 31 to form a friction-contact bonding relationship therebetween.
- the friction driving part 120 of the first driving element 42 can drive the first frame carrier 31 to move along the first direction in a friction driving manner, to drive the optical lens 20 to move along the first direction to perform optical anti-shake in the first direction.
- the first elastic element 431 is implemented as an elastic adhesive, that is, the first elastic element 431 is implemented as a glue with elasticity after curing.
- a layer of adhesive with a thickness of 10um to 50um can be applied between the surface of the inner side wall of the second frame carrier 32 and the piezoelectric active part 110 of the first driving element 42 ,
- the first elastic element 431 disposed between the piezoelectric active part 110 of the first driving element 42 and the second frame carrier 32 is formed after the adhesive is cured and formed.
- the first elastic element 431 can also enable the first driving element 42 to be fixed on the surface of the inner side wall of the second frame carrier 32 while providing a pre-pressure.
- the first elastic element 431 has a relatively high flatness, that is, when applying the adhesive, it is ensured that the applied adhesive has a relatively high flatness and uniformity as much as possible, so that the The first driving element 42 can be flatly fixed to the surface of the inner side wall of the second frame carrier 32 , thereby improving the driving stability of the first driving element 42 .
- the second driving element 45 is clamped and disposed on the second frame carrier 32 and the outer frame by the second pre-pressing member 46 . Between the frame carriers 33 , in this way, the second drive element 45 abuts against the second frame carrier 32 in frictional contact.
- the second pre-compression member 46 includes a second elastic element 461 , and the second elastic element 461 is disposed on the second driving element 45 Between the piezoelectric active part 110 and the outer frame carrier 33 , the second driving element 45 is forced against the second frame carrier 32 in a frictional contact manner by the elastic force of the second elastic element 461 .
- the friction driving portion 120 of the second driving element 45 directly abuts against the surface of the outer side wall of the second frame carrier 32 , and accordingly, the elastic force provided by the second elastic element 461
- the friction driving portion 120 of the second driving element 45 can be forced to abut against the surface of the outer side wall of the second frame carrier 32 to form a friction-contact bonding relationship therebetween.
- the friction driving part 120 of the second driving element 45 can drive the second frame carrier 32 to move along the second direction in a friction driving manner, to drive the optical lens 20 to move along the second direction to perform optical anti-shake in the second direction.
- the second elastic element 461 is implemented as an elastic adhesive, that is, the second elastic element 461 is implemented as a glue with elasticity after curing.
- a layer of adhesive with a thickness of 10um to 50um can be applied between the surface of the inner side wall of the outer frame carrier 33 and the piezoelectric active part 110 of the second driving element 45 to After the adhesive is cured and formed, the second elastic element 461 disposed between the piezoelectric active part 110 of the second driving element 45 and the outer frame carrier 33 is formed.
- the second elastic element 461 can also enable the second driving element 45 to be fixed on the surface of the inner side wall of the outer frame carrier 33 while providing a pre-pressure.
- the second elastic element 461 has a relatively high flatness, that is, when the adhesive is applied, it is ensured that the applied adhesive has a relatively high flatness and uniformity as much as possible, so that the The second driving element 45 can be flatly fixed to the surface of the inner side wall of the outer frame carrier 33 , thereby improving the driving stability of the second driving element 45 .
- the first elastic element 431 and the second elastic element 461 can also be implemented as elastic elements without viscosity, for example, the material itself has elasticity rubber, or springs, leaf springs, etc. that generate elasticity due to deformation, which are also not limited by this application.
- the structural configuration of the first pre-compression member 43 and the second pre-compression member 46 can also be adjusted.
- the first pre-pressing member 43 includes a first magnetic element 52 disposed on the first frame carrier 31 and a first magnetic element 52 disposed on the second frame carrier 32 and the second magnetic attraction element 53 corresponding to the first magnetic attraction element 52 to force the first magnetic attraction element 52 and the second magnetic attraction element 53
- the drive element 42 bears against the first frame carrier 31 in frictional contact.
- the first magnetic element 52 and the second magnetic element 53 refer to magnetic components that can attract each other.
- the first magnetic element 52 can be implemented as a magnet
- the second magnetic attraction element 53 may be implemented as a magnetic component, for example, a material made of iron, nickel, cobalt, etc.; for another example, the first magnetic attraction element 52 may be implemented as a magnet, and the second magnetic attraction element 52 may be implemented as a magnet.
- the magnetic attraction element 53 can also be implemented as a magnet.
- the second pre-compression member 46 includes a third magnetic attraction element 62 disposed on the second frame carrier 32 and a fourth magnetic attraction element disposed in the outer frame carrier 33 and corresponding to the third magnetic attraction element 62 .
- Element 63 to force the second driving element 45 against the second frame carrier 32 in a frictional contact manner through the magnetic attraction between the third magnetic element 62 and the fourth magnetic element 63 .
- the third magnetic element 62 and the fourth magnetic element 63 refer to magnetic components that can attract each other.
- the third magnetic element 62 can be implemented as a magnet, so
- the fourth magnetic attraction element 63 may be implemented as a magnetic component, for example, a material made of iron, nickel, cobalt and other metals; for another example, the third magnetic attraction element 62 may be implemented as a magnet, and the fourth magnetic attraction element 62 may be implemented as a magnet.
- the magnetic attraction element 63 can also be implemented as a magnet.
- the driving assembly 40 It further includes a first guide mechanism 48 arranged between the first frame carrier 41 and the second frame carrier 32 and a second guide mechanism 48 arranged between the second frame carrier 32 and the outer frame carrier 33 A guide mechanism 49, wherein the first guide mechanism 48 is configured to guide the first frame carrier 41 to move along the first direction, and the second guide mechanism 49 is configured to guide the first frame carrier 41 The two frame carriers 32 move along the second direction.
- the first guide mechanism 48 and the second guide mechanism 49 are implemented as a guide rod structure.
- the first guide mechanism 48 includes a first guide rod disposed on the outer side wall of the first frame carrier 31 and extending along the first direction, wherein two of the first guide rod The ends are fastened to the inner side walls of the second frame carrier 32 .
- the first guide rod and the first driving element 42 are arranged opposite to each other in the same direction, so that after the first driving element 42 is turned on, the first frame carrier 31 is guided to move along the extending direction of the first guide rod, so as to improve the movement stability of the first frame carrier 31 .
- the second guide mechanism 49 includes a second guide rod disposed on the outer side wall of the second frame carrier 32 and extending along the second direction, wherein the Both ends of the second guide rod are fixed on the inner side wall of the outer frame carrier 33 .
- the second guide rod and the second driving element 45 are arranged opposite to each other in the same direction, so that after the second driving element 45 is turned on, the second frame carrier 32 is guided to move along the extending direction of the second guide rod, so as to improve the movement stability of the second frame carrier 32 .
- first guide mechanism 48 and the second guide mechanism 49 can also be implemented based on other principles, for example, through a ball-rolling groove mechanism, a sliding block- The chute mechanism, etc., are not limited by this application.
- the driving assembly 40 further includes a first friction actuating part 131 and a second friction actuating part part 132, wherein the first friction actuating part 131 is arranged between the first driving element 42 and the first frame carrier 31 and the friction driving part 120 of the first driving element 42 is in the Under the action of the first pre-compression member 43, the first friction actuating portion 131 is in contact with the first friction actuating portion 131, and the first friction actuating portion 131 is in contact with the surface of the outer side wall of the first frame carrier 31.
- the The friction driving force provided by the first driving element 42 can act on the first frame carrier 31 through the first friction actuating portion 131 to drive the first frame carrier 31 and the optical lens 20 . move along the first direction. That is, in this variant embodiment, the pre-pressure between the frictional drive portion 120 of the first drive element 42 and the first frame carrier 31 is an indirect pre-pressure, that is, although the first drive element There is no direct contact between the friction driving part 120 of the first driving element 42 and the first frame carrier 31, but there is still a pre-pressure between the two so that the friction driving part 120 of the first driving element 42 can be driven by friction. The first frame carrier 31 is driven.
- the second friction actuating part 132 is arranged between the second drive element 45 and the second frame carrier 32 and the friction drive part 120 of the second drive element 45 is in the second Under the action of the pre-compression member 46, the second friction actuating portion 132 is in contact with the second friction actuating portion 132, and the second friction actuating portion 132 is in contact with the surface of the outer side wall of the second frame carrier 32. In this way, all the The friction driving force provided by the second driving element 45 can act on the second frame carrier 32 through the second friction actuating portion 132 to drive the second frame carrier 32 and the first frame carrier 31 and the optical lens 20 is moved along the second direction to perform optical anti-shake in the second direction.
- the first friction actuating portion 131 has a first surface and a second surface opposite to the first surface, wherein in the Under the action of the first pre-compression member 43 , the first surface of the first friction actuating portion 131 is in contact with the surface of the outer side wall of the first frame carrier 31 , and the second surface thereof is in contact with the plurality of friction drives.
- the second friction actuating portion 132 has a third surface and a fourth surface opposite to the third surface, wherein, under the action of the second pre-compression member 46 , the second friction actuating The third surface of the moving part 132 is in contact with the surface of the outer side wall of the second frame carrier 32 , and the fourth surface is in contact with the second end of at least one of the friction driving elements 121 of the plurality of friction driving elements 121 .
- the friction driving part 120 of the second driving element 45 abuts against the second friction actuating part 132 and the second friction actuating part 132 abuts against the second frame carrier 32 , In this way, the friction driving force provided by the second driving element 45 can act on the second frame carrier 32 through the second friction actuating portion 132 .
- the first friction actuating portion 131 and the second friction actuating portion 132 are respectively provided as a separate component in the Between the first drive element 42 and the first frame carrier 31, and between the second drive element 45 and the second frame carrier 32, for example, the first friction actuation portion 131 is implemented is a separate part and is attached to the side surface of the first frame carrier 31 , or the second friction actuating part 132 is implemented as a separate part and is attached to the second frame carrier 32
- the first friction actuating portion 131 is implemented as a layer of coating applied to the side surface of the first frame carrier 31, or the second friction actuating portion 132 is It is implemented as a layer of coating applied to the side surface of the second frame carrier 32 .
- first friction actuating portion 131 may also be integrally formed on the surface of the outer side wall of the first frame carrier 31 , that is, the first friction actuating portion 131 and the The first first frame carrier 31 has a one-piece structure.
- second friction actuating portion 132 may also be integrally formed on the surface of the outer side wall of the second frame carrier 32 , that is, the second friction actuating portion 132 and the The second frame carrier 32 has a one-piece structure.
- the length of the first friction actuating portion 131 is greater than the length of the first driving element 42 and the length of the second friction actuating portion 131 is greater than that of the The length of the second drive element 43, such that when the first frame carrier 31 and the second frame carrier 32 are driven in a frictionally driven manner by the first drive element 41 and the second drive element 42, respectively , the first frame carrier 31 and the second frame carrier 32 have sufficient strokes to ensure the linearity of movement of the first frame carrier 31 and the second frame carrier 32 .
- the length of the first friction actuating portion 131 may also be less than or equal to the length of the first driving element 42 and the length of the second friction actuating portion 132 may also be less than or equal to It is equal to the length of the second driving element 43, which is not limited by this application.
- FIG. 9 illustrates a schematic diagram of another variant implementation of the camera module according to the embodiment of the present application.
- the first frame carrier 31 has a first groove 310 concavely formed on its surface, and the frictional driving of the first driving element 42
- the second frame carrier 32 has a second groove 320 formed concavely on its surface, and the friction driving portion 120 of the second driving element 45 is arranged in the first groove 310. inside the second groove 320 . That is, in this modified embodiment, the first driving element 42 is at least partially accommodated in the first groove 310, and the second driving element 45 is at least partially accommodated in the second groove in slot 320.
- a part of the piezoelectric active part 110 of the first driving element 42 is accommodated in the first groove 310
- a part of the piezoelectric active part 110 of the second driving element 45 is accommodated in the first groove 310 . inside the second groove 320 .
- the first groove 310 itself forms a guide for guiding the movement of the first frame carrier 31 . guide groove. That is, in this modified embodiment, the first groove 310 not only provides an installation space for the installation of the first driving element 42, but also is formed to guide the movement of the first frame carrier 31 (or Said, regulate the guiding structure of the movement of the first driving element 42). Likewise, when the second drive element 45 drives the second frame carrier 32 within the second groove 320 , the second groove 320 itself is formed to guide the movement of the second frame carrier 32 guide groove.
- the second groove 320 not only provides an installation space for the installation of the first driving element 42, but is also formed to guide the movement of the second frame carrier 32 (or Said, regulating the movement of the second drive element 45) of the guide structure.
- the length dimension of the first driving element 42 and the second driving element 45 is smaller than the length dimension of the first groove 310 and the second groove 320, and the The width dimension of the first driving element 42 and the second driving element 45 is slightly smaller than or equal to the width dimension of the first groove 310 and the second groove 320 . .
- FIG. 9 is a schematic diagram illustrating yet another variant implementation of the camera module according to an embodiment of the present application. Compared with the examples shown in FIGS. 3 and 7 , in this variant embodiment, the arrangement of the first driving element 42 and the second driving element 45 is adjusted.
- the first driving element 42 is located at the side of the first frame carrier 31
- the second driving element 45 is located at the second frame The side of the carrier 32 .
- the first driving element 42 is located on the upper part of the first frame carrier 31
- the second driving element 45 is located on the second frame carrier 32 the upper part.
- the first driving element 42 is clamped and disposed between the upper and lower sides of the first frame carrier 31 and the second frame carrier 32 by the first pre-compression member 43 . , in this way, the first drive element 42 abuts the first frame carrier 31 in frictional contact.
- the second driving element 45 is clamped and disposed between the second frame carrier 32 and the outer frame carrier 33 through the second pre-pressing member 46. In this way, the second driving element 45 is clamped. The element 45 bears against said second frame carrier 32 in frictional contact.
- the drive assembly 40 further includes a first guide mechanism 48 disposed between the first frame carrier 41 and the second frame carrier 32 and a first guide mechanism 48 disposed between the second frame carrier 32 and the second frame carrier 32
- the second guide mechanism 49 between the outer frame carriers 33 .
- the first guide mechanism 48 and the second guide mechanism 49 are implemented as ball-roll groove mechanisms, such as Figure 11.
- FIG. 12 illustrates a schematic diagram of yet another variant implementation of the camera module according to the embodiment of the present application. Compared with the examples shown in FIGS. 3 and 7 , in this variant embodiment, the arrangement of the first driving element 42 and the second driving element 45 is adjusted again.
- the first driving element 42 is located at the lower part of the first frame carrier 31
- the second driving element 45 is located in the second frame carrier lower part of 32.
- the first driving element 42 is clamped and disposed between the upper and lower sides of the first frame carrier 31 and the second frame carrier 32 by the first pre-compression member 43 . , in this way, the first drive element 42 abuts the first frame carrier 31 in frictional contact.
- the second driving element 45 is clamped and disposed between the second frame carrier 32 and the outer frame carrier 33 through the second pre-pressing member 46. In this way, the second driving element 45 is clamped. The element 45 bears against said second frame carrier 32 in frictional contact.
- the drive assembly 40 further includes a first guide mechanism 48 disposed between the first frame carrier 41 and the second frame carrier 32 and a first guide mechanism 48 disposed between the second frame carrier 32 and the second frame carrier 32
- the second guide mechanism 49 between the outer frame carriers 33 .
- the first guide mechanism 48 and the second guide mechanism 49 are implemented as ball-roll groove mechanisms, such as Figure 12.
- the camera module based on the embodiments of the present application is clarified, wherein the camera module adopts the piezoelectric actuator 100 as a driver, so as to not only meet the driving requirements of the camera module for optical performance adjustment, but also be able to Meet the development needs of light and thin camera modules.
- the camera module is taken as an example of a traditional upright camera module
- the piezoelectric actuator 100 according to the embodiments of the present application also It can be used as a driver in a periscope camera module, which is not limited by this application.
- a camera module according to an embodiment of the present application is illustrated, which includes: a photosensitive assembly 10 , a lens assembly 20 held on a photosensitive path of the photosensitive assembly 10 , and a camera module for driving the photosensitive assembly 10 Assembly 10 to drive assembly 40 for optical image stabilization.
- the lens assembly 20 includes a lens carrier 21 and an optical lens 22 mounted on the lens carrier 21 .
- the optical lens 22 includes a lens barrel and at least one optical lens 22 installed in the lens barrel.
- the optical lens 22 can be implemented as an integrated lens, or a split lens, wherein, when the optical lens 22 is implemented as an integrated lens, the optical lens 22 includes a lens barrel, All the optical lenses 22 are installed in the lens barrel; and when the optical lens 22 is implemented as a split optical lens, the optical lens 22 is assembled from at least two parts of a single lens.
- the lens carrier 21 is a fixed carrier, that is, when the optical lens 22 is installed on the lens carrier 21, the relative relationship between the lens carrier 21 and the optical lens 22 The positional relationship does not change. It should be understood that in other examples of the present application, the lens carrier 21 may also be implemented as a driving carrier, so as to change the relative positional relationship between the optical lens 21 and the photosensitive assembly 10 through the driving carrier to Autofocus is performed, which is not limited by this application.
- the photosensitive assembly 10 includes a circuit board 11 , a photosensitive chip 12 electrically connected to the circuit board 11 , and a filter held on the photosensitive path of the photosensitive chip 12 .
- the component 13 wherein the circuit board 11 forms the mounting substrate of the photosensitive component 10 .
- the circuit board may be implemented as a printed circuit board (Printed Circuit Board, PCB), a software combination board, or a reinforced flexible circuit board (Flexible Printed Circuit, PFC).
- a reinforcing plate (not shown) may also be arranged under the circuit board 11, for example, a steel sheet is arranged under the circuit board, so as to strengthen all the The strength of the circuit board is improved and the heat dissipation performance of the photosensitive component is improved.
- the photosensitive assembly 10 further includes a bracket 14 disposed on the circuit board 11 , wherein the filter element 13 is installed on the bracket 14 to be maintained on the photosensitive path of the photosensitive chip 12 .
- the specific implementation of the filter element 13 held on the photosensitive path of the photosensitive chip 12 is not limited by the present application.
- the filter element 13 may be implemented as a filter element The film is coated on the surface of a certain optical lens of the zoom lens group, so as to have the effect of filtering light.
- the photosensitive component 10 may further include a filter element bracket (not shown) installed on the bracket 14. There are diagrams), wherein the filter element 13 is held on the photosensitive path of the photosensitive chip 12 by being mounted on the filter element holder.
- the bracket 14 may be implemented as a plastic bracket, which is attached to the circuit board 11 through an adhesive.
- the bracket 14 may also be implemented as an integrated bracket integrally formed on the circuit board 11 , such as a molded bracket, which is not limited by this application.
- the existing driving element for driving the optical component is an electromagnetic motor, for example, a voice coil motor (Voice Coil Motor: VCM), a shape memory alloy actuator (Shape of Memory Alloy Actuator: SMA), and the like.
- VCM Voice Coil Motor
- SMA Shape of Memory Alloy Actuator
- the existing voice coil motor and shape memory alloy driver are only suitable for driving optical components with a weight of less than 100mg, that is, if the weight of the optical lens exceeds 100mg, the existing driver will not be able to meet the application requirements of the camera module .
- the existing voice coil motor is equipped with a coil and a magnet.
- the internal magnetic fields will interact with each other, causing the magnets to move or shake, reducing the stability of the drive control. .
- the new type of driver can not only meet the driving requirements for the optical performance adjustment of the camera module, but also meet the development of light weight and thinning of the camera module. need.
- the new driver needs to meet the following requirements: relatively larger driving force, and better driving performance (specifically including: higher-precision driving control and longer driving journey).
- the present application proposes a piezoelectric actuator with a novel structure, which can meet the technical requirements of the camera module for the driver.
- the piezoelectric actuator is further arranged in the camera module in an appropriate arrangement manner, so that it meets the structural design requirements and size design requirements of the camera module.
- the piezoelectric actuator 100 includes: a piezoelectric active part 110 and a friction driving part 120 drivably connected to the piezoelectric active part 110 , wherein, in the After the piezoelectric actuator 100 is turned on, the friction driving part 120 is configured to provide a driving force for driving the driven object under the action of the piezoelectric active part 110 .
- the piezoelectric active part 110 is implemented as a piezoelectric ceramic element, which has a strip-like structure.
- the piezoelectric active part 110 is a piezoelectric laminated structure, which has multiple groups of first polarization regions A1 and second polarization regions A2 arranged alternately with each other.
- the first polarization regions A1 and A2 are arranged alternately.
- the second polarization regions A2 have opposite polarization directions, wherein after the piezoelectric actuator 100 is turned on, multiple groups of the first polarization regions A1 and the second polarization regions A1 and the second polarization regions are alternately arranged.
- the polarization area A2 is deformed in different directions to drive the friction driving part 120 to move along a preset direction in the manner of traveling wave or standing wave, so as to provide driving force for driving the component, as shown in FIG. 16 .
- the piezoelectric active part 110 has a plurality of sets of first polarized regions A1 and second polarized regions A2 arranged alternately with each other, the polarized regions A1 and The polarization directions of the polarization regions A2 are opposite.
- multiple groups of the polarization areas A1 and A2 that alternate with each other are arranged in a side-by-side manner, that is, multiple groups of the polarization areas A1 that alternate with each other are arranged in a side-by-side manner. and the polarization area A2 is on the same straight line.
- the piezoelectric active part 110 is electrically connected to an external excitation power supply through a wire, so that after the piezoelectric active part 110 is provided with power excitation, the piezoelectric active part 110 is powered by the reverse piezoelectric effect of the piezoelectric active part 110.
- the electroactive part 110 is deformed. It should be understood that the deformation of the piezoelectric active part 110 will drive the friction driving part 120 to move in the manner of traveling wave or standing wave, that is, the deformation of the piezoelectric active part 110 can be transmitted to the friction
- the driving part 120 provides driving force through the traveling wave or standing wave motion of the friction driving part 120 .
- each group of the first polarization region A1 and the second polarization region A2 may also have the same polarization direction, wherein, in the piezoelectric actuator 100 After being turned on, by inputting alternating voltage signals to each group of the first polarization area A1 and the second polarization area A2, multiple groups of the first polarization area A1 and the first polarization area A1 and the first polarization area A1 are alternately arranged.
- the polarization region A2 is deformed in different directions to drive the friction driving portion 120 to move along a predetermined direction in the form of a standing wave, which is not limited by the present application.
- the friction driving part 120 includes a plurality of friction driving elements 121 spaced apart from each other, wherein the first end of each friction driving element 121 is coupled to the In the piezoelectric active part 110 , the friction driving part 120 is driveably connected to the piezoelectric active part 110 in such a manner.
- the number of the plurality of friction driving elements 121 may be 2, 3, 4 or more, preferably, the number of the friction driving elements 121 exceeds 3 (ie, greater than or equal to 3). So that the piezoelectric actuator 100 can control the length of the piezoelectric actuator 100 while realizing the stable output of the linear driving force, so that it is suitable for being installed in a relatively small device such as a camera module. .
- the length dimension of the piezoelectric actuator 100 is almost equal to the dimension of the piezoelectric active part 110 (and the piezoelectric active part 110 has a long strip shape). In an embodiment, the length dimension of the piezoelectric actuator 100 is less than or equal to 20 mm, preferably, the length dimension thereof is less than or equal to 10 mm.
- the plurality of friction driving elements 121 are located in the middle region of the piezoelectric active part 110 , so that when the acted object is driven by the plurality of friction driving elements 121 , the driven object will move more smoothly and linearly.
- the friction driving element 121 has a columnar structure, which protrudes from the upper surface of the piezoelectric active part 110 . From the outside, the piezoelectric actuator 100 has a rack shape. It should be understood that in other examples of the present application, the friction driving element 121 may also be implemented in other shapes, for example, its cross-sectional shape may be set as a trapezoid, which is not limited by the present application.
- the at least three friction driving elements 121 are arranged equidistantly and alternately, which is conducive to improving the Driving stability of the piezoelectric actuator 100 .
- the second ends of the plurality of friction driving elements 121 opposite to the first ends have The plurality of end faces are on the same plane, for example, in the example shown in FIG. 15 , the end faces of the second ends of the plurality of friction driving elements 121 are on the same horizontal plane. That is, in this embodiment, the end surfaces of the second ends of the plurality of friction driving elements 121 form the same plane.
- a layer of friction material may be further applied on the plane (ie, the plane defined by the end surfaces of the second ends of the plurality of friction driving elements 121 ) to increase the frictional force .
- a mover is usually arranged on the upper surface of the friction driving part 120 to transmit the traveling wave or standing wave provided by the friction driving part 120 through the mover. Wave-like driving force and act on the driven object. That is, a friction actuating portion 130 (the friction actuating portion 130 serving as the mover) is provided between the friction driving portion 120 and the driven object, so that when the piezoelectric actuator 100 is guided When the friction driving part 120 is turned on, the traveling wave or standing wave motion of the friction driving part 120 will drive the friction driving part 130 to move linearly.
- the traveling or standing waves travel in opposite directions.
- FIG. 18 illustrates a schematic diagram of a variant implementation of the piezoelectric actuator 100 according to embodiments of the present application.
- the piezoelectric actuator 100 further includes: a frictional connection layer 140 stacked on the piezoelectric active part 110 , and each of the frictional driving elements 121 has its first frictional driving element 121 .
- One end is coupled to the piezoelectric active part 110 by being fixed to the frictional connection layer 140 .
- the frictional drive element 121 and the frictional connection layer 140 may have a one-piece structure.
- the frictional drive element 121 and the frictional connection layer 140 may have a split structure, ie, the two are separate components.
- the piezoelectric actuator 100 has a relatively more optimized size.
- the length dimension of the piezoelectric actuator 100 is less than or equal to 20 mm, preferably, the length dimension is less than or equal to 10 mm, for example, it may be 6 mm or 4.2 mm.
- the width dimension of the piezoelectric actuator 100 is less than or equal to 1 mm, preferably, the width dimension is less than or equal to 0.7 mm.
- the height dimension of the piezoelectric actuator 100 is less than or equal to 1 mm.
- the height dimension of the piezoelectric actuator 100 is determined by the dimensions of the piezoelectric active part 110 and the friction driving part 120 .
- the piezoelectric actuator 100 Compared with the traditional electromagnetic driver, the piezoelectric actuator 100 has the advantages of small size, large thrust and high precision. Quantitatively, the piezoelectric actuator 100 according to the embodiment of the present application can provide a driving force of 0.6N to 2N, which is sufficient to drive a component with a weight greater than 100 mg.
- the piezoelectric actuator 100 has other advantages compared to the traditional electromagnetic motor solution and memory alloy motor solution, including but not limited to: a relatively small size (with Slender shape), better response accuracy, relatively simpler structure, relatively simpler drive control, high product consistency, no electromagnetic interference, relatively larger stroke, short stabilization time, relatively small weight, etc.
- the camera module needs to be equipped with a driver that has a long driving stroke and needs to ensure better alignment accuracy.
- a driver that has a long driving stroke and needs to ensure better alignment accuracy.
- additional guide rods or ball guides need to be designed, and large-sized driving magnets/coils need to be adapted to the side of the lens, and balls, shrapnel, and suspension wires need to be installed.
- Other auxiliary positioning devices in order to accommodate more components, ensure structural strength and reserve structural gaps, often lead to large lateral dimensions of the module, complex structural design, and heavy module weight.
- the memory alloy motor solution is limited by the relatively small stroke that the memory alloy solution can provide in the same proportion, and there are reliability risks such as potential disconnection.
- the piezoelectric actuator 100 has a relatively simple structure, and the assembly structure is simpler.
- the size of the piezoelectric active part 110, the friction driving part 120 and other components are basically irrelevant to the size of the motion stroke, so it is used in optical zoom products.
- the piezoelectric actuator 100 can achieve the advantages of large thrust, small size, and small weight, and at the same time, it can be designed to match a larger stroke or heavier device weight, and the integration degree in the design is also higher.
- the piezoelectric actuator 100 pushes the object to be pushed to perform micron-scale motion in a frictional contact manner.
- the non-contact manner of driving the object to be pushed requires the electromagnetic force to counteract the gravity, and the frictional force It has the advantages of greater thrust, greater displacement and lower power consumption, and at the same time, the control accuracy is higher, and high-precision continuous zoom can be achieved.
- the piezoelectric actuator 100 does not have a magnet coil structure, so there is no problem of magnetic interference.
- the piezoelectric actuator 100 can be self-locked by the friction between the components, so the abnormal shaking noise of the camera module can be reduced when the optical image stabilization is performed.
- the driving assembly 40 including: a first carrying frame 41, a first driving element 42, a first preloading part 43, a second carrying frame 44, a second driving element 45, a second preloading part 46 and an outer frame 47, wherein the first A drive element 42 and the second drive element 45 are implemented as piezoelectric actuators 100 .
- the photosensitive assembly 10 is mounted on the first carrier frame 41 , and the first driving element 42 passes through the first pre-pressing member 43 . Abuts the first carrier frame 41 in a frictional contact manner, and is configured to drive the first carrier frame 41 to drive the photosensitive assembly 10 to move in a plane perpendicular to the optical axis to perform a first Optical image stabilization in the direction.
- the second bearing frame 44 is externally disposed on the first bearing frame 41 , wherein the second driving element 45 is pressed against the second bearing frame 44 in a frictional contact manner through the second pre-pressing member 46 .
- the first direction is perpendicular to the second direction.
- the first direction is the X-axis direction
- the second direction is the Y-axis direction.
- the fact that the first driving element 42 is in frictional contact against the first carrying frame 41 means that there is a pre-pressure between the friction driving part 120 of the first driving element 42 and the first carrying frame 41 , so that the friction driving part 120 of the first driving element 42 can drive the first carrying frame 41 by means of friction driving.
- the pre-pressure between the friction driving part 120 of the first driving element 42 and the first bearing frame 41 may be a direct pre-pressure or an indirect pre-pressure, wherein the direct pre-pressure represents the The friction driving part 120 of the first driving element 42 is in direct contact with the first carrier frame 41 to generate a pre-pressure therebetween; the indirect pre-pressure means that although the friction driving part of the first driving element 42 There is no direct contact between 120 and the first carrying frame 41, but there is still a pre-pressure between the two, so that the friction driving part 120 of the first driving element 42 can drive the first The carrier frame 41 .
- the fact that the second driving element 45 is in frictional contact against the second carrying frame 44 means that there is a predetermined gap between the friction driving part 120 of the second driving element 45 and the second carrying frame 44 .
- the pressure, and then the friction driving part 120 of the second driving element 45 can drive the second carrier frame 44 by means of friction driving.
- the pre-pressure between the friction driving part 120 of the second driving element 45 and the second bearing frame 44 may be a direct pre-pressure or an indirect pre-pressure, wherein the direct pre-pressure represents the The friction driving part 120 of the second driving element 45 is in direct contact with the second carrier frame 44 to generate a pre-pressure therebetween; the indirect pre-pressure means that although the friction driving part of the second driving element 45 There is no direct contact between 120 and the second carrier frame 44, but there is still a pre-pressure between the two, so that the friction driving part 120 of the second driving element 45 can drive the second driving element 45 through friction driving. Carrying frame 44 .
- the first driving element 42 is clamped and disposed on the first carrier frame 41 and the second carrier by the first preloading member 43 . Between the frames 44 , in this way, the first driving element 42 abuts against the first carrying frame 41 in a frictional contact manner.
- the first pre-compression member 43 includes a first elastic element 431 , and the first elastic element 431 is disposed on the piezoelectric active part 110 of the first driving element 42 and the Between the second bearing frames 44 , the first driving element 42 is forced against the first bearing frame 41 in a frictional contact manner by the elastic force of the first elastic element 431 .
- the friction driving part 120 of the first driving element 42 directly abuts against the surface of the outer side wall of the first bearing frame 41 , and accordingly, the elastic force provided by the first elastic element 431 can force the The friction driving portion 120 of the first driving element 42 abuts against the surface of the outer side wall of the first bearing frame 41 to form a frictional contact bonding relationship therebetween.
- the friction driving part 120 of the first driving element 42 can drive the first carrier frame 41 to move in the first direction in a friction driving manner, To drive the photosensitive assembly 10 to move along the first direction to perform optical anti-shake in the first direction.
- the first elastic element 431 is implemented as an elastic adhesive, that is, the first elastic element 431 is implemented as a glue with elasticity after curing.
- a layer of adhesive with a thickness of 10um to 50um can be applied between the surface of the inner side wall of the second carrier frame 44 and the piezoelectric active part 110 of the first driving element 42 ,
- the first elastic element 431 disposed between the piezoelectric active part 110 of the first driving element 42 and the second carrying frame 44 is formed after the adhesive is cured and formed.
- the first elastic element 431 can also enable the first driving element 42 to be fixed to the surface of the inner side wall of the second bearing frame 44 while providing a pre-pressure.
- the first elastic element 431 has a relatively high flatness, that is, when applying the adhesive, it is ensured that the applied adhesive has a relatively high flatness and uniformity as much as possible, so that the The first driving element 42 can be flatly fixed to the surface of the inner side wall of the second carrying frame 44 , thereby improving the driving stability of the first driving element 42 .
- the second driving element 45 is clamped and disposed between the second carrying frame 44 and the outer frame 47 by the second preloading member 46 . Meanwhile, in this way, the second drive element 45 abuts against the second carrier frame 44 in a frictional contact manner. Also, it should be noted that, as shown in FIG. 13 , the lens carrier of the lens assembly is carried on the outer frame 47 .
- the second pre-compression member 46 includes a second elastic element 461 , and the second elastic element 461 is arranged on the piezoelectric of the second driving element 45 . Between the active part 110 and the outer frame 47 , the second driving element 45 is forced against the second bearing frame 44 in a frictional contact manner by the elastic force of the second elastic element 461 .
- the friction driving portion 120 of the second driving element 45 directly abuts against the surface of the outer side wall of the second bearing frame 44 , and accordingly, the elastic force provided by the second elastic element 461
- the friction driving part 120 of the second driving element 45 can be forced to abut against the surface of the outer side wall of the second bearing frame 44 to form a frictional contact bonding relationship therebetween.
- the friction driving part 120 of the second driving element 45 can drive the second carrier frame 44 to move in the second direction in a friction driving manner, To drive the photosensitive assembly 10 to move along the second direction to perform optical anti-shake in the second direction.
- the second elastic element 461 is implemented as an elastic adhesive, that is, the second elastic element 461 is implemented as a glue with elasticity after curing.
- a layer of adhesive with a thickness of 10um to 50um can be applied between the surface of the inner side wall of the outer frame 47 and the piezoelectric active part 110 of the second driving element 45 to After the adhesive is cured and formed, the second elastic element 461 disposed between the piezoelectric active part 110 of the second driving element 45 and the outer frame 47 is formed.
- the second elastic element 461 can also enable the second driving element 45 to be fixed to the surface of the inner side wall of the outer frame 47 while providing a pre-pressure.
- the second elastic element 461 has a relatively high flatness, that is, when the adhesive is applied, it is ensured that the applied adhesive has a relatively high flatness and uniformity as much as possible, so that the The second driving element 45 can be flatly fixed to the surface of the inner side wall of the outer frame 47 , thereby improving the driving stability of the second driving element 45 .
- the first elastic element 431 and the second elastic element 461 can also be implemented as elastic elements without viscosity, for example, the material itself has elasticity rubber, or springs, leaf springs, etc. that generate elasticity due to deformation, which are also not limited by this application.
- the driving assembly 40 It further includes a first guide mechanism 48 arranged between the first bearing frame 41 and the second bearing frame 44 and a second guide mechanism 48 arranged between the second bearing frame 44 and the outer frame 47 A guide mechanism 49, wherein the first guide mechanism 48 is configured to guide the first carrier frame 41 to move along the first direction, and the second guide mechanism 49 is configured to guide the second The carrier frame 44 moves along the second direction.
- the first guide mechanism 48 and the second guide mechanism 49 are implemented as guide rod structures.
- the first guide mechanism 48 includes a first guide rod disposed on the outer side wall of the first bearing frame 41 and extending along the first direction, wherein two of the first guide rods The ends are fixed on the inner side wall of the second carrier frame 44 .
- the first guide rod and the first driving element 42 are arranged opposite to the same direction, so that after the first driving element 42 is turned on, the first carrying frame 41 is guided to move along the extending direction of the first guide rod, so as to improve the movement stability of the first carrying frame 41 .
- the second guide mechanism 49 includes a second guide rod disposed on the outer side wall of the second carrying frame 44 and extending along the second direction, wherein the Both ends of the second guide rod are fixed to the inner side wall of the outer frame 47 .
- the second guide rod and the second driving element 45 are arranged opposite to the same direction, so that after the second driving element 45 is turned on, the second carrying frame 44 is guided to move along the extending direction of the second guide rod, so as to improve the movement stability of the second carrying frame 44 .
- first guide mechanism 48 and the second guide mechanism 49 can also be implemented based on other principles, for example, through a ball-rolling groove mechanism, a sliding block- The chute mechanism, etc., are not limited by this application.
- the driving assembly 40 further includes a first friction actuating part 131 and a The second friction actuating portion 132, wherein the first friction actuating portion 131 is provided between the first driving element 42 and the first carrying frame 41 and the friction driving of the first driving element 42 Under the action of the first pre-compression member 43, the first friction actuating portion 120 is in contact with the first friction actuating portion 131, and the first friction actuating portion 131 is in contact with the surface of the outer side wall of the first bearing frame 41, In this way, the friction driving force provided by the first driving element 42 can act on the first bearing frame 41 through the first friction actuating portion 131 to drive the first bearing frame 41 and the The photosensitive assembly 10 moves along the first direction.
- the pre-pressure between the friction driving portion 120 of the first driving element 42 and the first carrying frame 41 is an indirect pre-pressure, that is, although the first driving element There is no direct contact between the friction driving part 120 of the first driving element 42 and the first bearing frame 41, but there is still a pre-pressure between the two so that the friction driving part 120 of the first driving element 42 can be driven by friction.
- the first carrier frame 41 is driven.
- the second friction actuating portion 132 is provided between the second driving element 45 and the second carrier frame 44 and the friction driving portion 120 of the second driving element 45 is located between the second driving element 45 and the second carrier frame 44 .
- the second friction actuating portion 132 is in contact with the second friction actuating portion 132, and the second friction actuating portion 132 is in contact with the surface of the outer side wall of the second carrying frame 44. In this way, all the The friction driving force provided by the second driving element 45 can act on the second bearing frame 44 through the second friction actuating portion 132 to drive the second bearing frame 44 and the first bearing frame 41 and the photosensitive assembly 10 is moved along the second direction to perform optical anti-shake in the second direction.
- the first friction actuating part 131 has a first surface and a second surface opposite to the first surface, wherein, in the first pre- Under the action of the pressing member 43 , the first surface of the first friction actuating portion 131 abuts against the surface of the outer side wall of the first bearing frame 41 , and the second surface thereof abuts against the plurality of friction driving elements 121 .
- the second friction actuating portion 132 has a third surface and a fourth surface opposite to the third surface, wherein, under the action of the second pre-compression member 46 , the second friction actuating The third surface of the movable portion 132 is in contact with the surface of the outer side wall of the second carrying frame 44 , and the fourth surface is in contact with the second end of at least one of the friction driving elements 121 of the plurality of friction driving elements 121 .
- the friction driving part 120 of the second driving element 45 abuts against the second friction actuating part 132 and the second friction actuating part 132 abuts against the second bearing frame 44 , In this way, the friction driving force provided by the second driving element 45 can act on the second bearing frame 44 through the second friction actuating portion 132 .
- the first friction actuating portion 131 and the second friction actuating portion 132 are respectively provided as a separate component in the first friction actuating portion 131 .
- the first friction actuating portion 131 is implemented as a A separate part and attached to the side surface of the first carrier frame 41
- the second friction actuating portion 132 is implemented as a separate part and attached to the side of the second carrier frame 44
- the first friction actuating portion 131 is implemented as a layer of coating applied to the side surface of the first bearing frame 41
- the second friction actuating portion 132 is implemented as A layer of coating is applied to the side surface of the second carrier frame 44 .
- first friction actuating portion 131 may also be integrally formed on the surface of the outer side wall of the first carrying frame 41 , that is, the first friction actuating portion 131 and the The first bearing frame 41 has an integrated structure.
- second friction actuating portion 132 may also be integrally formed on the surface of the outer side wall of the second carrying frame 44 , that is, the second friction actuating portion 132 and the The second carrier frame 44 has a one-piece structure.
- the length of the first friction actuating portion 131 is greater than the length of the first driving element 42 and the length of the second friction actuating portion 131 is greater than that of the The length of the second driving element 43, such that when the first and second carrying frames 41 and 44 are driven in a frictional driving manner by the first and second driving elements 41 and 42, respectively , the first bearing frame 41 and the second bearing frame 44 have sufficient strokes to ensure the linearity of movement of the first bearing frame 41 and the second bearing frame 44 .
- the length of the first friction actuating portion 131 may also be less than or equal to the length of the first driving element 42 and the length of the second friction actuating portion 132 may also be less than or equal to It is equal to the length of the second driving element 43, which is not limited by this application.
- FIG. 20 illustrates a schematic diagram of another variant implementation of the camera module according to an embodiment of the present application.
- the first carrier frame 41 has a first groove 410 concavely formed on the surface thereof, and the friction driving portion 120 of the first driving element 42 is is arranged in the first groove 410;
- the second carrier frame 44 has a second groove 440 concavely formed on its surface, and the friction driving portion 120 of the second driving element 45 is arranged in the first groove 440. inside the two grooves 440 . That is, in this variant embodiment, the first driving element 42 is at least partially accommodated in the first groove 410, and the second driving element 45 is at least partially accommodated in the second groove in slot 440.
- a part of the piezoelectric active part 110 of the first driving element 42 is accommodated in the first groove 410
- a part of the piezoelectric active part 110 of the second driving element 45 is accommodated in the inside the second groove 440 .
- the first groove 410 itself forms a guide for guiding the movement of the first carrier frame 41 . guide groove. That is, in this variant embodiment, the first groove 410 not only provides an installation space for the installation of the first driving element 42, but also is formed to guide the movement of the first carrying frame 41 (or Said, regulate the guiding structure of the movement of the first driving element 42). Likewise, when the second driving element 45 drives the second carrier frame 44 within the second groove 440 , the second groove 440 itself is formed to guide the movement of the second carrier frame 44 guide groove.
- the second groove 440 not only provides an installation space for the installation of the first driving element 42, but also is formed to guide the movement of the second carrier frame 44 (or Said, regulating the movement of the second drive element 45) of the guide structure.
- the length dimension of the first driving element 42 and the second driving element 45 is smaller than the length dimension of the first groove 410 and the second groove 440, and the The width dimension of the first driving element 42 and the second driving element 45 is slightly smaller than or equal to the width dimension of the first groove 410 and the second groove 440 .
- FIG. 21 illustrates a schematic diagram of yet another variant implementation of the camera module according to an embodiment of the present application.
- the first carrier frame 41 has a first groove 410 concavely formed on the surface thereof, and the first friction actuating portion 131 is provided in the
- the second bearing frame 44 has a second groove 440 recessed on its surface, and the second friction actuating portion 132 is disposed in the second groove 440 . That is, in this variant embodiment, the first driving element 42 is at least partially accommodated in the first groove 410, and the second driving element 45 is at least partially accommodated in the second groove in slot 440.
- a part of the piezoelectric active part 110 of the first driving element 42 is accommodated in the first groove 410
- a part of the piezoelectric active part 110 of the second driving element 45 is accommodated in the first groove 410 . inside the second groove 440 .
- the first groove 410 itself forms a guide for guiding the movement of the first carrier frame 41 . guide groove. That is, in this variant embodiment, the first groove 410 not only provides an installation space for the installation of the first driving element 42, but also is formed to guide the movement of the first carrying frame 41 (or Said, regulate the guiding structure of the movement of the first driving element 42). Likewise, when the second driving element 45 drives the second carrier frame 44 within the second groove 440 , the second groove 440 itself is formed to guide the movement of the second carrier frame 44 guide groove.
- the second groove 440 not only provides an installation space for the installation of the first driving element 42, but also is formed to guide the movement of the second carrier frame 44 (or Said, regulating the movement of the second drive element 45) of the guide structure.
- the length dimension of the first driving element 42 and the second driving element 45 is smaller than the length dimension of the first groove 410 and the second groove 440, and the The width dimension of the first driving element 42 and the second driving element 45 is slightly smaller than or equal to the width dimension of the first groove 410 and the second groove 440 .
- FIG. 22 illustrates a schematic diagram of yet another variant implementation of the camera module according to an embodiment of the present application. Compared with the example shown in FIG. 13 , in this modified embodiment, the arrangement of the first driving element 42 and the second driving element 45 is adjusted.
- the first driving element 42 is located on the side of the first carrier frame 41
- the second driving element 45 is located on the second carrier The side of the frame 44 .
- the first driving element 42 is located on the upper part of the first carrying frame 41
- the second driving element 45 is located on the second carrying frame 44 . the upper part.
- the first driving element 42 is clamped and disposed between the first carrier frame 41 and the second carrier frame 44 through the first pre-compression member 43 up and down , in this way, the first driving element 42 abuts against the first carrying frame 41 in a frictional contact manner.
- the second driving element 45 is clamped and disposed between the second carrier frame 44 and the lens assembly 20 through the second preloading member 46. In this way, the second driving element 45 abuts the second carrier frame 44 in frictional contact.
- the outer frame 47 can also be provided with an inner extension arm, so that the second driving element 45 is clamped and disposed on the second driving element 45 by the second pre-pressing member 46 . Between the upper and lower sides of the carrier frame 44 and the outer frame 47.
- the drive assembly 40 further includes a first guide mechanism 48 disposed between the first carrying frame 41 and the second carrying frame 44 and a first guiding mechanism 48 disposed between the second carrying frame and the outer frame 44 .
- the second guide mechanism 49 between the frames 47 .
- the first guide mechanism 48 and the second guide mechanism 49 are implemented as ball-roll groove mechanisms, as shown in FIG. 23 shown.
- FIG. 24 illustrates a schematic diagram of yet another variant implementation of the camera module according to an embodiment of the present application. Compared with the example shown in FIG. 13 , in this variant embodiment, the arrangement of the first driving element 42 and the second driving element 45 is adjusted again.
- the first driving element 42 is located at the lower part of the first carrying frame 41, and the second driving element 45 is located in the second carrying frame The lower part of 44.
- the first driving element 42 is clamped and disposed between the first carrier frame 41 and the second carrier frame 44 through the first pre-compression member 43 up and down , in this way, the first driving element 42 abuts against the first carrying frame 41 in a frictional contact manner.
- the second driving element 45 is clamped and disposed between the second carrying frame 44 and the outer frame 47 by the second pre-compression member 46. In this way, the second driving element 45 abuts the second carrier frame 44 in frictional contact.
- the drive assembly 40 further includes a first guide mechanism 48 disposed between the first carrying frame 41 and the second carrying frame 44 and a first guiding mechanism 48 disposed between the second carrying frame and the outer frame 44 .
- the second guide mechanism 49 between the frames 47 .
- the first guide mechanism 48 and the second guide mechanism 49 are implemented as ball-roll groove mechanisms, as shown in FIG. 23 shown.
- the structural configuration of the first pre-compression member 43 and the second pre-compression member 46 can also be adjusted.
- the first pre-pressing member 43 includes a first magnetic element 52 disposed on the first carrying frame 41 and a first magnetic element 52 disposed on the second carrying frame 44 and the second magnetic attraction element 53 corresponding to the first magnetic attraction element 52 to force the first magnetic attraction element 52 and the second magnetic attraction element 53 through the magnetic attraction effect
- the drive element 42 is in frictional contact against the first carrier frame 41 .
- the first magnetic element 52 and the second magnetic element 53 refer to magnetic components that can attract each other.
- the first magnetic element 52 can be implemented as a magnet
- the second magnetic attraction element 53 may be implemented as a magnetic component, for example, a material made of iron, nickel, cobalt, etc.; for another example, the first magnetic attraction element 52 may be implemented as a magnet, and the second magnetic attraction element 52 may be implemented as a magnet.
- the magnetic attraction element 53 can also be implemented as a magnet.
- the second pre-compression member 46 includes a third magnetic element 62 disposed on the second carrier frame 44 and a fourth magnetic element 62 disposed in the lens assembly 20 and corresponding to the third magnetic element 62 . 63 , to force the second driving element 45 against the second carrying frame 44 in a frictional contact manner through the magnetic attraction between the third magnetic element 62 and the fourth magnetic element 63 .
- the third magnetic element 62 and the fourth magnetic element 63 refer to magnetic components that can attract each other.
- the third magnetic element 62 can be implemented as a magnet, so
- the fourth magnetic attraction element 63 may be implemented as a magnetic component, for example, a material made of iron, nickel, cobalt and other metals; for another example, the third magnetic attraction element 62 may be implemented as a magnet, and the fourth magnetic attraction element 62 may be implemented as a magnet.
- the magnetic attraction element 63 can also be implemented as a magnet.
- the camera module based on the embodiments of the present application is clarified, wherein the camera module adopts the piezoelectric actuator 100 as a driver, so as to not only meet the driving requirements of the camera module for optical performance adjustment, but also be able to Meet the development needs of light and thin camera modules.
- the camera module is taken as an example of a traditional upright camera module
- the piezoelectric actuator 100 according to the embodiments of the present application also It can be used as a driver in a periscope camera module, which is not limited by this application.
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Abstract
Description
Claims (61)
- 一种摄像模组,其特征在于,包括:感光组件,包括:线路板和电连接于所述线路板的感光芯片;被保持于所述感光组件的感光路径上的镜头组件,包括:镜头载体和安装于所述镜头载体的光学镜头,其中,所述光学镜头设有一光轴;以及驱动组件,包括:第一承载框架、第一驱动元件和第一预压部件,其中,所述感光组件被安装于所述第一承载框架,所述第一驱动元件被实施为压电致动器,其中,所述第一驱动元件通过所述第一预压部件以摩擦接触的方式抵向所述第一承载框架,并被配置为驱动所述第一承载框架以带动所述感光组件在垂直于所述光轴的平面内移动以进行光学防抖。
- 根据权利要求1所述的摄像模组,其中,所述驱动组件进一步包括第二承载框架、第二驱动元件和第二预压部件,其中,所述第二承载框架外设于所述第一承载框架,所述第二驱动元件被实施为压电致动器,其中,所述第二驱动元件通过所述第二预压部件以摩擦接触的方式抵向所述第二承载框架,并被配置为驱动所述第二承载框架以带动第一承载框架进行带动所述感光组件在垂直于所述光轴的平面内移动以进行光学防抖。
- 根据权利要求2所述的摄像模组,其中,所述压电致动器,包括:压电主动部和可传动地连接于所述压电主动部的摩擦驱动部,其中,在所述压电致动器被导通后,所述摩擦驱动部在所述压电主动部作用下被配置为提供用于驱动所述第一承载框架或所述第二承载框架的驱动力。
- 根据权利要求3所述的摄像模组,其中,所述压电主动部具有多组相互交替设置的第一极化区域和第二极化区域,所述第一极化区域和所述第二极化区域具有相反的极化方向,其中,在所述压电致动器被导通后,相互交替设置的多组所述第一极化区域和所述第二极化区域发生不同方向的形变以带动所述摩擦驱动部以行波或驻波的方式沿着预设方向运动,以提供用于驱动第一承载框架或所述第二承载框架的驱动力。
- 根据权利要求4所述的摄像模组,其中,所述摩擦驱动部包括多个相互间隔设置的摩擦驱动元件,每个所述摩擦驱动元件的第一端耦接于所述压电主动部。
- 根据权利要求5所述的摄像模组,其中,所述压电致动器进一步包括:叠置于所述压电主动部的摩擦连接层,每个所述摩擦驱动元件以其第一端固定于所述摩擦连接层的方式被耦接于所述压电主动部。
- 根据权利要求6所述的摄像模组,其中,所述多个摩擦驱动元件的与所述第一端相对的第二端的多个端面处于同一平面。
- 根据权利要求7所述的摄像模组,其中,所述驱动组件进一步包括第一摩擦作动部和第二摩擦作动部,所述第一摩擦作动部被设置于所述第一驱动元件和所述第一承载框架之间,所述第二摩擦作动部被设置于所述第二驱动元件和所述第二承载框架之间。
- 根据权利要求8所述的摄像模组,其中,所述第一摩擦作动部具有第一表面和与所述第一表面相对的第二表面,所述第一表面抵触于所述第一承载框架的表面,所述第二表面抵触于所述多个摩擦驱动元件中至少一个所述摩擦驱动元件的第二端的端面;所述第二摩擦作动部具有第三表面和与所述第三表面相对的第四表面,所述第三表面抵触于所述第二承载框架的表面,所述第四表面抵触于所述多个摩擦驱动元件中至少一个所述摩擦驱动元件的第二端的端面。
- 根据权利要求9所述的摄像模组,其中,所述第一承载框架具有凹陷地形成于其表面的第一凹槽,所述第一摩擦作动部被设置于所述第一凹槽内;和/或,所述第二承载框架具有凹陷地形成于其表面的第二凹槽,所述第二摩擦作动部被设置于所述第二凹槽内。
- 根据权利要求9所述的摄像模组,其中,所述第一凹槽和所述第二凹槽的长度大于所述压电致动器的长度尺寸,所述压电致动器的宽度尺寸小 于或等于所述第一凹槽和所述第二凹槽的宽度尺寸。
- 根据权利要求3所述的摄像模组,其中,所述压电致动器的长度尺寸小于等于20mm、其宽度尺寸小于等于1mm、以及,其高度尺寸小于等于1mm。
- 根据权利要求8所述的摄像模组,其中,所述第一驱动元件通过所述第一预压部件和所述第一摩擦作动部被夹持地设置于所述第一承载框架和所述第二承载框架之间,通过这样的方式,所述第一驱动元件以摩擦接触的方式抵向所述第一承载框架。
- 根据权利要求13所述的摄像模组,其中,所述第一驱动元件位于所述第一承载框架的侧部。
- 根据权利要求13所述的摄像模组,其中,所述第一驱动元件位于所述第一承载框架的上部。
- 根据权利要求13所述的摄像模组,其中,所述第一驱动元件位于所述第一承载框架的下部。
- 根据权利要求14所述的摄像模组,其中,所述驱动组件进一步包括外设于所述第二承载框架的外框架,其中,所述第二驱动元件通过所述第二预压部件和所述第二摩擦作动部被夹持地设置于所述第二承载框架和所述外框架之间,通过这样的方式,所述第二驱动元件以摩擦接触的方式抵向所述第二承载框架,其中,所述第二驱动元件位于所述第二承载框架的侧部。
- 根据权利要求15所述的摄像模组,其中,所述第二驱动元件通过所述第二预压部件和所述第二摩擦作动部被夹持地设置于所述第二承载框架和所述镜头载体之间,通过这样的方式,所述第二驱动元件以摩擦接触的方式抵向所述第二承载框架,其中,所述第二驱动元件位于所述第二承载框架的上部。
- 根据权利要求16所述的摄像模组,其中,所述驱动组件进一步外设于所述第二承载框架的外框架,其中,所述第二驱动元件通过所述第二预压部件和所述第二摩擦作动部被夹持地设置于所述第二承载框架和所述外框架之间,通过这样的方式,所述第二驱动元件以摩擦接触的方式抵向所述第二承载框架,其中,所述第二驱动元件位于所述第二承载框架的下部。
- 根据权利要求17所述的摄像模组,其中,所述驱动组件进一步包括设置于所述第一承载框架和所述第二承载框架之间的第一导引机构和设置于所述第二承载框架和所述外框架之间的第二导引机构。
- 根据权利要求18所述的摄像模组,其中,所述驱动组件进一步包括设置于所述第一承载框架和所述第二承载框架之间的第一导引机构和设置于所述第二承载框架和所述镜头载体之间的第二导引机构。
- 根据权利要求19所述的摄像模组,其中,所述驱动组件进一步包括设置于所述第一承载框架和所述第二承载框架之间的第一导引机构和设置于所述第二承载框架和所述外框架之间的第二导引机构。
- 根据权利要求20所述的摄像模组,其中,所述第一预压部件包括第一弹性元件,所述第一弹性元件被设置于所述第一驱动元件的压电主动部和所述第二承载框架之间,以通过所述第一弹性元件的弹力迫使所述第一驱动元件以摩擦接触的方式抵向所述第一承载框架;所述第二预压元件包括第二弹性元件,所述第二弹性元件被设置于所述第二驱动元件的压电主动部和所述外框架之间,以通过所述第二弹性元件的弹力迫使所述第二驱动元件以摩擦接触的方式抵向所述第二承载框架。
- 根据权利要求21所述的摄像模组,其中,所述第一预压部件包括第一弹性元件,所述第一弹性元件被设置于所述第一驱动元件的压电主动部和所述第二承载框架之间,以通过所述第一弹性元件的弹力迫使所述第一驱动元件以摩擦接触的方式抵向所述第一承载框架;所述第二预压元件包括第 二弹性元件,所述第二弹性元件被设置于所述第二驱动元件的压电主动部和所述镜头载体之间,以通过所述第二弹性元件的弹力迫使所述第二驱动元件以摩擦接触的方式抵向所述第二承载框架。
- 根据权利要求22所述的摄像模组,其中,所述第一预压部件包括第一弹性元件,所述第一弹性元件被设置于所述第一驱动元件的压电主动部和所述第二承载框架之间,以通过所述第一弹性元件的弹力迫使所述第一驱动元件以摩擦接触的方式抵向所述第一承载框架;所述第二预压元件包括第二弹性元件,所述第二弹性元件被设置于所述第二驱动元件的压电主动部和所述外框架之间,以通过所述第二弹性元件的弹力迫使所述第二驱动元件以摩擦接触的方式抵向所述第二承载框架。
- 根据权利要求23至25任一所述的摄像模组,其中,所述第一弹性元件和所述第二弹性元件被实施为具有弹性的黏着剂。
- 根据权利要求26所述的摄像模组,其中,所述第一弹性元件和所述第二弹性元件的厚度尺寸为10um至50um之间。
- 根据权利要求20所述的摄像模组,其中,所述第一预压部件包括设置于所述第一承载框架的第一磁吸元件和设置于所述第二承载框架且对应于所述第一磁吸元件的第二磁吸元件,以通过所述第一磁吸元件和所述第二磁吸元件之间的磁吸作用迫使所述第一驱动元件以摩擦接触的方式抵向所述第一承载框架;所述第二预压部件包括设置于所述第二承载框架的第三磁吸元件和设置于所述外框架且对应于所述第三磁吸元件的第四磁吸元件,以通过所述第三磁吸元件和所述第四磁吸元件之间的磁吸作用迫使所述第二驱动元件以摩擦接触的方式抵向所述第二承载框架。
- 根据权利要求21所述的摄像模组,其中,所述第一预压部件包括设置于所述第一承载框架的第一磁吸元件和设置于所述第二承载框架且对应于所述第一磁吸元件的第二磁吸元件,以通过所述第一磁吸元件和所述第二磁吸元件之间的磁吸作用迫使所述第一驱动元件以摩擦接触的方式抵向 所述第一承载框架;所述第二预压部件包括设置于所述第二承载框架的第三磁吸元件和设置于所述镜头载体且对应于所述第三磁吸元件的第四磁吸元件,以通过所述第一磁吸元件和所述第二磁吸元件之间的磁吸作用迫使所述第一驱动元件以摩擦接触的方式抵向所述第一承载框架。
- 根据权利要求22所述的摄像模组,其中,所述第一预压部件包括设置于所述第一承载框架的第一磁吸元件和设置于所述第二承载框架且对应于所述第一磁吸元件的第二磁吸元件,以通过所述第一磁吸元件和所述第二磁吸元件之间的磁吸作用迫使所述第一驱动元件以摩擦接触的方式抵向所述第一承载框架;所述第二预压部件包括设置于所述第二承载框架的第三磁吸元件和设置于所述外框架且对应于所述第三磁吸元件的第四磁吸元件,以通过所述第三磁吸元件和所述第四磁吸元件之间的磁吸作用迫使所述第二驱动元件以摩擦接触的方式抵向所述第二承载框架。
- 一种摄像模组,其特征在于,包括:感光组件,包括:线路板和电连接于所述线路板的感光芯片;安装于所述感光组件上的框架载体组件,包括第一框架载体和外设于所述第一框架载体的第二框架载体;以被安装于所述框架组件的第一框架载体内的方式被保持于所述感光组件的感光路径上的光学镜头,所述光学镜头设有一光轴;以及驱动组件,包括:第一驱动元件和第一预压部件,所述第一驱动元件被实施为压电致动器,其中,所述第一驱动元件通过所述第一预压部件以摩擦接触的方式抵向所述第一框架载体,并被配置为驱动所述第一框架载体以带动所述光学镜头在垂直于所述光轴的平面内移动以进行在第一方向的光学防抖。
- 根据权利要求31所述的摄像模组,其中,所述框架载体组件进一步包括外设于所述第二框架载体的外框架载体,所述驱动组件进一步包括第二驱动元件和第二预压部件,所述第二驱动元件被实施为所述压电致动器,其中,所述第二驱动元件通过所述第二预压部件以摩擦接触的方式抵向所述第二框架载体,并被配置为驱动所述第二框架载体以带动第一框架载体进行 带动所述光学镜头在垂直于所述光轴的平面内移动以在第二方向上的进行光学防抖,所述第一方向垂直于所述第二方向。
- 根据权利要求32所述的摄像模组,其中,所述压电致动器,包括:压电主动部和可传动地连接于所述压电主动部的摩擦驱动部,其中,在所述压电致动器被导通后,所述摩擦驱动部在所述压电主动部作用下被配置为提供用于驱动所述第一框架载体或所述第二框架载体的驱动力。
- 根据权利要求33所述的摄像模组,其中,所述压电主动部具有多组相互交替设置的第一极化区域和第二极化区域,所述第一极化区域和所述第二极化区域具有相反的极化方向,其中,在所述压电致动器被导通后,相互交替设置的多组所述第一极化区域和所述第二极化区域发生不同方向的形变以带动所述摩擦驱动部以行波或驻波的方式沿着预设方向运动,以提供用于驱动第一框架载体或所述第二框架载体的驱动力。
- 根据权利要求33所述的摄像模组,其中,所述压电主动部具有多组相互交替设置的第一极化区域和第二极化区域,所述第一极化区域和所述第二极化区域具有相同的极化方向,其中,在所述压电致动器被导通后,相互交替设置的多组所述第一极化区域和所述第二极化区域发生不同方向的形变以带动所述摩擦驱动部以行波或驻波的方式沿着预设方向运动,以提供用于驱动第一框架载体或所述第二框架载体的驱动力。
- 根据权利要求34或35所述的摄像模组,其中,多组相互交替设置的所述第一极化区域和所述第二极化区域处于同一直线上。
- 根据权利要求35所述的摄像模组,其中,所述摩擦驱动部包括多个相互间隔设置的摩擦驱动元件,每个所述摩擦驱动元件的第一端耦接于所述压电主动部。
- 根据权利要求37所述的摄像模组,其中,所述多个摩擦驱动元件位于所述压电主动部的中部区域。
- 根据权利要求37所述的摄像模组,其中,所述压电致动器进一步包括:叠置于所述压电主动部的摩擦连接层,每个所述摩擦驱动元件以其第一端固定于所述摩擦连接层的方式被耦接于所述压电主动部。
- 根据权利要求37所述的摄像模组,其中,所述多个摩擦驱动元件的与所述第一端相对的第二端的多个端面处于同一平面。
- 根据权利要求38所述的摄像模组,其中,所述驱动组件进一步包括第一摩擦作动部和第二摩擦作动部,所述第一摩擦作动部被设置于所述第一驱动元件和所述第一框架载体之间,所述第二摩擦作动部被设置于所述第二驱动元件和所述第二框架载体之间。
- 根据权利要求41所述的摄像模组,其中,所述第一摩擦作动部具有第一表面和与所述第一表面相对的第二表面,所述第一表面抵触于所述第一框架载体的表面,所述第二表面抵触于所述多个摩擦驱动元件中至少一个所述摩擦驱动元件的第二端的端面;所述第二摩擦作动部具有第三表面和与所述第三表面相对的第四表面,所述第三表面抵触于所述第二框架载体的表面,所述第四表面抵触于所述多个摩擦驱动元件中至少一个所述摩擦驱动元件的第二端的端面。
- 根据权利要求33所述的摄像模组,其中,所述压电致动器的长度尺寸小于等于10mm、其宽度尺寸小于等于1mm、以及,其高度尺寸小于等于1mm。
- 根据权利要求41所述的摄像模组,其中,所述第一驱动元件通过所述第一预压部件和所述第一摩擦作动部被夹持地设置于所述第一框架载体和所述第二框架载体之间,通过这样的方式,所述第一驱动元件以摩擦接触的方式抵向所述第一框架载体。
- 根据权利要求44所述的摄像模组,其中,所述第一驱动元件位于 所述第一框架载体的侧部。
- 根据权利要求44所述的摄像模组,其中,所述第一驱动元件位于所述第一框架载体的上部。
- 根据权利要求44所述的摄像模组,其中,所述第一驱动元件位于所述第一框架载体的下部。
- 根据权利要求45所述的摄像模组,其中,所述第二驱动元件通过所述第二预压部件和所述第二摩擦作动部被夹持地设置于所述第二框架载体和所述外框架载体之间,通过这样的方式,所述第二驱动元件以摩擦接触的方式抵向所述第二框架载体,其中,所述第二驱动元件位于所述第二框架载体的侧部。
- 根据权利要求46所述的摄像模组,其中,所述第二驱动元件通过所述第二预压部件和所述第二摩擦作动部被夹持地设置于所述第二框架载体和所述外框架载体之间,通过这样的方式,所述第二驱动元件以摩擦接触的方式抵向所述第二框架载体,其中,所述第二驱动元件位于所述第二框架载体的上部。
- 根据权利要求47所述的摄像模组,其中,所述驱动组件进一步包括外设于所述第二框架载体的外框架载体,其中,所述第二驱动元件通过所述第二预压部件和所述第二摩擦作动部被夹持地设置于所述第二框架载体和所述外框架载体之间,通过这样的方式,所述第二驱动元件以摩擦接触的方式抵向所述第二框架载体,其中,所述第二驱动元件位于所述第二框架载体的下部。
- 根据权利要求48所述的摄像模组,其中,所述驱动组件进一步包括设置于所述第一框架载体和所述第二框架载体之间的第一导引机构和设置于所述第二框架载体和所述外框架载体之间的第二导引机构。
- 根据权利要求49所述的摄像模组,其中,所述驱动组件进一步包括设置于所述第一框架载体和所述第二框架载体之间的第一导引机构和设置于所述第二框架载体和所述镜头载体之间的第二导引机构。
- 根据权利要求50所述的摄像模组,其中,所述驱动组件进一步包括设置于所述第一框架载体和所述第二框架载体之间的第一导引机构和设置于所述第二框架载体和所述外框架载体之间的第二导引机构。
- 根据权利要求51所述的摄像模组,其中,所述第一预压部件包括第一弹性元件,所述第一弹性元件被设置于所述第一驱动元件的压电主动部和所述第二框架载体之间,以通过所述第一弹性元件的弹力迫使所述第一驱动元件以摩擦接触的方式抵向所述第一框架载体;所述第二预压元件包括第二弹性元件,所述第二弹性元件被设置于所述第二驱动元件的压电主动部和所述外框架载体之间,以通过所述第二弹性元件的弹力迫使所述第二驱动元件以摩擦接触的方式抵向所述第二框架载体。
- 根据权利要求52所述的摄像模组,其中,所述第一预压部件包括第一弹性元件,所述第一弹性元件被设置于所述第一驱动元件的压电主动部和所述第二框架载体之间,以通过所述第一弹性元件的弹力迫使所述第一驱动元件以摩擦接触的方式抵向所述第一框架载体;所述第二预压元件包括第二弹性元件,所述第二弹性元件被设置于所述第二驱动元件的压电主动部和所述外框架载体之间,以通过所述第二弹性元件的弹力迫使所述第二驱动元件以摩擦接触的方式抵向所述第二框架载体。
- 根据权利要求53所述的摄像模组,其中,所述第一预压部件包括第一弹性元件,所述第一弹性元件被设置于所述第一驱动元件的压电主动部和所述第二框架载体之间,以通过所述第一弹性元件的弹力迫使所述第一驱动元件以摩擦接触的方式抵向所述第一框架载体;所述第二预压元件包括第二弹性元件,所述第二弹性元件被设置于所述第二驱动元件的压电主动部和所述外框架载体之间,以通过所述第二弹性元件的弹力迫使所述第二驱动元件以摩擦接触的方式抵向所述第二框架载体。
- 根据权利要求54至56任一所述的摄像模组,其中,所述第一弹性元件和所述第二弹性元件被实施为具有弹性的黏着剂。
- 根据权利要求57所述的摄像模组,其中,所述第一弹性元件和所述第二弹性元件的厚度尺寸为10um至50um之间。
- 根据权利要求51所述的摄像模组,其中,所述第一预压部件包括设置于所述第一框架载体的第一磁吸元件和设置于所述第二框架载体且对应于所述第一磁吸元件的第二磁吸元件,以通过所述第一磁吸元件和所述第二磁吸元件之间的磁吸作用迫使所述第一驱动元件以摩擦接触的方式抵向所述第一框架载体;所述第二预压部件包括设置于所述第二框架载体的第三磁吸元件和设置于所述外框架载体且对应于所述第三磁吸元件的第四磁吸元件,以通过所述第三磁吸元件和所述第四磁吸元件之间的磁吸作用迫使所述第二驱动元件以摩擦接触的方式抵向所述第二框架载体。
- 根据权利要求52所述的摄像模组,其中,所述第一预压部件包括设置于所述第一框架载体的第一磁吸元件和设置于所述第二框架载体且对应于所述第一磁吸元件的第二磁吸元件,以通过所述第一磁吸元件和所述第二磁吸元件之间的磁吸作用迫使所述第一驱动元件以摩擦接触的方式抵向所述第一框架载体;所述第二预压部件包括设置于所述第二框架载体的第三磁吸元件和设置于所述外框架载体且对应于所述第三磁吸元件的第四磁吸元件,以通过所述第一磁吸元件和所述第二磁吸元件之间的磁吸作用迫使所述第一驱动元件以摩擦接触的方式抵向所述第一框架载体。
- 根据权利要求53所述的摄像模组,其中,所述第一预压部件包括设置于所述第一框架载体的第一磁吸元件和设置于所述第二框架载体且对应于所述第一磁吸元件的第二磁吸元件,以通过所述第一磁吸元件和所述第二磁吸元件之间的磁吸作用迫使所述第一驱动元件以摩擦接触的方式抵向所述第一框架载体;所述第二预压部件包括设置于所述第二框架载体的第三磁吸元件和设置于所述外框架载体且对应于所述第三磁吸元件的第四磁吸 元件,以通过所述第三磁吸元件和所述第四磁吸元件之间的磁吸作用迫使所述第二驱动元件以摩擦接触的方式抵向所述第二框架载体。
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