WO2021249473A1 - 驱动装置、摄像头模组及电子设备 - Google Patents
驱动装置、摄像头模组及电子设备 Download PDFInfo
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- WO2021249473A1 WO2021249473A1 PCT/CN2021/099349 CN2021099349W WO2021249473A1 WO 2021249473 A1 WO2021249473 A1 WO 2021249473A1 CN 2021099349 W CN2021099349 W CN 2021099349W WO 2021249473 A1 WO2021249473 A1 WO 2021249473A1
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- voltage
- electro
- carrier
- driving
- driving device
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
- G03B3/10—Power-operated focusing
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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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/0065—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element having a beam-folding prism or mirror
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
- G03B13/36—Autofocus systems
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/17—Bodies with reflectors arranged in beam forming the photographic image, e.g. for reducing dimensions of camera
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
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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
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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
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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
- H04N23/67—Focus control based on electronic image sensor signals
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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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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0046—Movement of one or more optical elements for zooming
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0053—Driving means for the movement of one or more optical element
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0053—Driving means for the movement of one or more optical element
- G03B2205/0084—Driving means for the movement of one or more optical element using other types of actuators
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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
- H04N23/69—Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming
Definitions
- This application relates to the field of electronic devices, in particular to a driving device, a camera module and electronic equipment.
- the drive structure in the camera module of the electronic device can drive the lens to move and realize the function of auto-focusing, so as to capture clearer images.
- the traditional driving device uses a magnetoelectric structure to drive the driving device, but the magnetoelectric structure will interfere with the electronic devices around the driving device and affect the performance of the electronic device.
- the embodiments of the present application provide a driving device, a camera module, and an electronic device to solve the problem that the magnetic field generated by the magnetic steel and coil of the current driving device will interfere with the devices around the driving device.
- the first aspect of the embodiments of the present application provides a driving device, including: a fixing component, a carrier, and an electro-driving component;
- the first end of the electro-driven component is connected with the fixing component, and the second end of the electro-driven component is connected with the carrier;
- the carrier is used to carry functional devices
- the electro-driven component when a voltage is applied to the electro-driven component, the electro-driven component deforms to drive the carrier to move.
- the electro-driving assembly includes an electro-driving sheet, a first end of the electro-driving sheet is connected with the fixing assembly, and a second end of the electro-driving sheet is connected with the carrier.
- the fixing assembly includes a ring-shaped structural member with a first through hole, the carrier is disposed in the first through hole, the number of the electro-driven plates is multiple, and the plurality of electro-driven pieces The driving piece is symmetrically arranged with respect to the central axis of the first through hole.
- the carrier includes a second through hole, the second through hole forms an accommodating cavity, and the functional device is disposed in the accommodating cavity;
- the electro-driven sheet When a voltage is applied to the electro-driven sheet, the electro-driven sheet deforms and drives the carrier to move along the axis direction of the second through hole.
- the driving device includes a housing, the ring structure is fixedly disposed on the housing, the fixing assembly further includes a fixing member, the fixing member is disposed on the inner wall of the first through hole, and the fixing
- the number of components is the same as the number of the electro-driven plates, and each of the electro-driven plates is connected to the ring-shaped structural member through a fixing member.
- the electro-driving sheet is an ion-conducting driving sheet
- the ion-conducting driving sheet includes an ion-exchange resin layer, and a first electrode layer and a second electrode respectively disposed on two opposite surfaces of the ion-exchange resin layer Layer, the ion exchange resin layer has a polymer electrolyte in it.
- the ion conduction driving sheet drives the carrier to move in the first direction;
- the ion conduction driving sheet drives the carrier to move in the second direction;
- first voltage and the second voltage have opposite polarities, and the first direction and the second direction are opposite to each other.
- the ion conduction driving sheet drives the carrier to move a first distance in a first direction;
- the ion conduction driving sheet drives the carrier to move a second distance in the first direction;
- the first voltage and the third voltage have the same polarity, and the third voltage is greater than the first voltage, and the first distance is different from the second distance.
- the ion conduction driving sheet drives the carrier to move in the first direction at a first rate
- the ion conduction driving sheet drives the carrier to move in the first direction at a second rate
- the first voltage and the third voltage have the same polarity, and the third voltage is greater than the first voltage, and the first rate is different from the second rate.
- a second aspect of the embodiments of the present application provides a camera module including a first driving device, and the first driving device is the driving device described in any one of the foregoing.
- the functional device used by the carrier in the first driving device A to carry is the first lens or the first lens group
- the camera module further includes a second driving device A, and the second driving device A It is the driving device described in any one of the above, and the functional device used for carrying by the carrier in the second driving device A is the second lens or the second lens group.
- a third aspect of the embodiments of the present application provides an electronic device, including the driving device described in any one of the foregoing.
- the present application includes a fixed component, a carrier, and an electro-driven component; the first end of the electro-driven component is connected with the fixed component, and the second end of the electro-driven component is connected with the carrier
- the carrier is used to carry a functional device; wherein, when a voltage is applied to the electro-driven assembly, the electro-driven assembly deforms to drive the carrier to move.
- the magnetoelectric structure is eliminated, which will not cause magnetic field interference to the circuits and devices around the driving device, and purify the working environment of the circuits and devices around the driving device.
- Fig. 1 is a schematic structural diagram of a driving device provided by an embodiment of the present application
- Fig. 2 is a side view of the structural diagram of Fig. 1;
- FIG. 3 is a schematic diagram of an electro-driving sheet made by IPMC provided by an embodiment of the present invention when no voltage is applied;
- 4 and 5 are schematic diagrams of the deformation of the electro-driving sheet provided by the embodiment of the present invention when a voltage is applied;
- FIG. 6 is a schematic structural diagram of a camera module provided by an embodiment of the present application.
- FIG. 7 is a schematic diagram of the zoom effect of the camera module provided by the embodiment of the present application.
- this embodiment provides a driving device, including: a fixing assembly 1, a carrier 2, and an electro-driving assembly 3; the first end of the electro-driving assembly 3 is connected to the fixing assembly 1 , The second end of the electro-driven assembly 3 is connected to the carrier 2; the carrier 2 is used to carry functional devices; wherein, when a voltage is applied to the electro-driven assembly 3, the electro-driven The assembly 3 deforms to drive the carrier 2 to move.
- the fixed component 1 and the electro-driven component 3 may be fixedly connected or detachably connected.
- the carrier 2 and the electro-driven component 3 may be fixedly connected or detachably connected.
- the carrier 2 is used to carry a functional device, and a detachable connection may be adopted between the carrier 2 and the functional device, for example, a threaded connection or a snap connection, and the functional device may be an optical device.
- the optical device can be a lens or lens assembly applied to a camera, an infrared sensor, a flashlight, etc.
- a driving device can be used to adjust the optical length of the optical device output or receive the optical signal, the divergence angle and focus of the optical device, etc.
- the functional device can also be an acoustic module, the position of the acoustic module can be adjusted by the driving device, thereby changing the volume of the front cavity or the back cavity of the acoustic module to change the audio characteristics of the acoustic module, etc.;
- the functional device is also It can be some other movable devices, such as a stylus, interface, or a card holder.
- the driving device is a driving structure for ejecting the movable device.
- the electro-drive assembly 3 When a voltage is applied to the electro-drive assembly 3, the electro-drive assembly 3 deforms and drives the carrier 2 to move. For example, according to the different deformation directions of the electro-drive assembly 3, the carrier 2 can be driven to move toward When moving in the first direction or the second direction, the first direction and the second direction are opposite to each other.
- the driving device in this embodiment includes a fixed assembly 1, a carrier 2 and an electro-driven assembly 3; the first end of the electro-driven assembly 3 is connected to the fixed assembly 1, and the electro-driven assembly 3 The second end is connected to the carrier 2; the carrier 2 is used to carry functional devices; wherein, when a voltage is applied to the electro-driving component 3, the electro-driving component 3 deforms to drive the carrier 2 move.
- the magnetoelectric structure is eliminated, which will not cause magnetic field interference to the circuits and devices around the driving device, and purify the working environment of the circuits and devices around the driving device.
- the electro-driven assembly 3 includes an electro-driven piece 31, a first end of the electro-driven piece 31 is connected to the fixing assembly 1, and a second end of the electro-driven piece 31 Connect with the carrier 2.
- the fixing assembly 1 includes a ring-shaped structural member with a first through hole 11, the carrier 2 is disposed in the first through hole 11, and the number of the electro-driven plates 31 There are multiple, and multiple electro-driven plates 31 are arranged symmetrically with respect to the central axis of the first through hole 11.
- the number of electro-driven plates 31 may be multiple, and the multiple electro-driven plates 31 are arranged symmetrically with respect to the central axis of the first through hole 11, so that the driving force acting on the carrier 2 can be evenly distributed.
- the number of electro-driven plates 31 is four.
- the carrier 2 includes a second through hole 21, the second through hole 21 forms an accommodating cavity, and the functional device is arranged in the accommodating cavity;
- the electro-driven sheet 31 deforms and drives the carrier 2 to move along the axis of the second through hole 21, and the movement of the carrier 2 drives the functional devices to move together.
- the driving device includes a housing, and the annular structure is fixedly disposed on the housing, and the fixing assembly 1 further includes a fixing member that is disposed in the first through hole 11
- the number of the fixing members is the same as the number of the electro-driving plates 31, and each electro-driving plate 31 is connected to the ring structure through one fixing member.
- the fixing member can be connected to the electro-driven sheet 31 by welding or glue bonding.
- the fixing member may include an upper gasket and a lower gasket, which are respectively connected to the first surface of the electro-driven sheet 31 In contact with the second surface.
- the driving device further includes a circuit board, the circuit board can be arranged at the gap between the casing and the ring structure, and the fixing member is electrically connected with the circuit board.
- the driving device further includes a bracket arranged on the carrier 2, and the electro-driving sheet 31 is connected to the carrier 2 through the bracket.
- the bracket can be made of low-cost insulating materials to save the amount of electro-vibrating plate and reduce the cost of the driving device.
- the electro-driving sheet 31 is an ion-conducting driving sheet
- the ion-conducting driving sheet includes an ion exchange resin layer and a first layer respectively disposed on two opposite surfaces of the ion exchange resin layer.
- the electrode layer and the second electrode layer, the ion exchange resin layer has a polymer electrolyte in it.
- the electro-driven sheet 4 may be made of ion-exchange polymer metal composite (IPMC).
- IPMC material is a new type of electrically actuated functional material. It uses ion exchange resin layer (such as fluorocarbon polymer, etc.) as a matrix, and plating precious metals (such as platinum, silver, etc.) on the surface of the substrate to form an electrode layer, that is, the first electrode
- the layer and the second electrode layer, as shown in FIG. 3, are the first electrode layer and the second electrode layer as indicated by reference numerals 101 and 103 in FIG. 3, respectively.
- the ion exchange resin layer 102 includes a polymer electrolyte, and the polymer electrolyte contains cations and anions. The positions and quantities of the cations and anions in FIG. 3 are only indicative, and do not represent the actual situation.
- IPMC material is a new type of driving material, which has the advantages of light driving, large displacement deformation, and low driving voltage.
- the advantages of using IPMC in the driving device are obvious.
- IPMC is a non-magnetic material and will not cause magnetic interference; the displacement and speed generated by IPMC deformation are reduced in proportion to the thickness of IPMC, and the force generated by IPMC deformation is less than the thickness of IPMC.
- the cube increases proportionally. Therefore, the thickness of the IPMC can be set according to the actual situation to achieve the required displacement, speed and strength due to the deformation of the IPMC.
- the ion conduction drive sheet drives the carrier 2 to move in the first direction; when the voltage applied to the ion conduction drive sheet is In the case of the second voltage, the ion conduction drive sheet drives the carrier 2 to move in a second direction; wherein the first voltage and the second voltage have opposite polarities, and the first direction is opposite to the The second direction is opposite to each other.
- the ion conduction drive plate can drive the carrier 2 to move in the first direction or the second direction. Both the first direction and the second direction are the axial directions of the second through hole 21.
- the ion conduction drive sheet drives the carrier 2 to move a first distance in the first direction;
- the voltage of the sheet is the third voltage
- the ion conduction drive sheet drives the carrier 2 to move a second distance in the first direction; wherein the first voltage and the third voltage have the same polarity, and The third voltage is greater than the first voltage, and the first distance is different from the second distance.
- the second distance may be greater than the first distance.
- the carrier 2 When the carrier 2 needs to move a larger distance, the carrier 2 can be driven to move a larger distance by applying a larger voltage to the ion conduction drive plate; when the carrier 2 needs to move a smaller distance, a larger distance can be applied to the ion conduction drive plate.
- the voltage drives the carrier 2 to move a small distance.
- the magnitude of the voltage applied to the ion-conducting drive plate can be determined according to the correspondence relationship.
- the ion conduction drive sheet drives the carrier 2 to move in the first direction at a first rate;
- the voltage of the driving plate is the third voltage, the ion conduction driving plate drives the carrier 2 to move in the first direction at a second rate; wherein the first voltage and the third voltage have the same polarity, And the third voltage is greater than the first voltage, the first rate is different from the second rate, and the second rate may be less than the first rate.
- the carrier 2 When the carrier 2 is required to move at a higher speed, the carrier 2 can be driven to move at a higher speed by applying a higher voltage to the ion conduction drive plate; when the carrier 2 is required to move at a lower speed, it can be applied to the ion conduction drive plate.
- the small voltage drives the carrier 2 to move at a small speed.
- the voltage applied to the ion-conducting drive sheet can be determined according to the correspondence.
- a camera module including a first driving device, and the first driving device is the driving device described in the above-mentioned embodiment.
- the functional device carried by the carrier of the first driving device is the first lens or the first lens group
- the camera module further includes a second driving device
- the second driving device is the above-mentioned embodiment
- the carrier in the second driving device is used to carry the second lens or the second lens group.
- FIG 6 is a structural diagram of a camera module provided by an embodiment of the application.
- the number 11 is a module housing, which is composed of alloy and has high strength, which can encapsulate and protect the internal components of the module. effect.
- Number 12 shows a prism, which is made of glass.
- the inclined surface of the prism can totally reflect the incoming light and change the optical path of the incident light. Therefore, the placement method of the camera module on the mobile terminal (such as a mobile phone) can be changed, which is a breakthrough in the mobile terminal.
- the limit of the thickness size Since the prism can be rotated, it can also play an anti-shake effect in the module.
- the number 13 shows the front fixed group, which is composed of three aspherical lenses, which has the function of converging and condensing light.
- the reference number A1 is the first driving device, and the reference number A2 is the second driving device.
- the reference number 14 is the variable magnification group, that is, the functional device carried by the carrier of the first drive device A1.
- the variable magnification group is composed of two aspherical lenses. ; Apply a voltage to the electro-driving assembly of the first driving device A1, the electro-driving assembly generates a deformation drive carrier to move to change the focal length of the lens, increase the zoom ratio, as shown in Figure 7 of the electro-actuated drive device A1 The effect picture of the drive component pushing the carrier to move.
- Number 16 is a compensation group, that is, a functional device carried by the carrier of the second driving device A2.
- the compensation group is composed of an aspheric lens, and the aspheric lens may be composed of plastic or glass.
- a voltage is applied to the electro-driving component of the second driving device A2, and the electro-driving component generates deformation to drive the carrier to move to compensate for the movement of the image surface caused by the movement of the zoom group 14, as shown in FIG. The effect picture of the driving component pushing the carrier to move.
- the number 17 shows the rear fixed group, which is composed of a piece of aspherical lens, and its function is to converge the scene on the object side into a real image of the system.
- Number 18 shows a color filter, which is a glass plate coated with an infrared cut-off film, which can filter out the infrared light entering the system.
- Reference number 19 is a photosensitive chip, which has a photoelectric conversion function and converts the aberration-corrected optical signal into an electrical signal.
- the fixing component of the first driving device A1 can be fixedly arranged on the module housing 11, or a limiting structure or guiding structure can be arranged on the module shell 11, and the fixing component of the first driving device A1 can be arranged in the limiting structure or guiding structure. Structurally. Through the limiting structure or the guiding structure, the fixed component of the first driving device A1 is limited to a predetermined position or limited to move in a predetermined direction.
- the fixing component of the second driving device A2 can also be arranged on the limiting structure or the guiding structure.
- variable magnification group and the compensation group respectively correspond to different focal lengths when they are located at different positions.
- IPMC can achieve large displacements, the zoom ratio of the camera module is very high.
- This kind of scheme that deforms when a voltage is applied through the IPMC drives the camera zoom group and compensation group to move, which can realize continuous optical zoom.
- the driving device provided by the present application has the advantages of simple structure, no magnetic interference, large stroke, and large zoom magnification.
- an electronic device the driving device described in the above embodiment.
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Abstract
Description
Claims (20)
- 一种驱动装置,包括:固定组件、载体和电致驱动组件;所述电致驱动组件的第一端与所述固定组件连接,所述电致驱动组件的第二端与所述载体相连接;所述载体用于承载功能器件;其中,当对所述电致驱动组件施加电压时,所述电致驱动组件变形以驱动所述载体移动。
- 根据权利要求1所述的驱动装置,其中,所述电致驱动组件包括电致驱动片,所述电致驱动片的第一端与所述固定组件连接,所述电致驱动片的第二端与所述载体连接。
- 根据权利要求2所述的驱动装置,其中,所述固定组件包括开设有第一通孔的环形结构件,所述载体设置于所述第一通孔中,所述电致驱动片的数量为多个,多个所述电致驱动片关于所述第一通孔的中心轴线对称设置。
- 根据权利要求3所述的驱动装置,其中,所述载体包括第二通孔,所述第二通孔形成容置腔体,所述功能器件设置于所述容置腔体中;当对所述电致驱动片施加电压时,所述电致驱动片变形并驱动所述载体沿着所述第二通孔的轴线方向移动。
- 根据权利要求3所述的驱动装置,包括壳体,所述环形结构件固定设置于所述壳体,所述固定组件还包括固定件,所述固定件设置于所述第一通孔的内壁,且所述固定件的数量与所述电致驱动片的数量相同,每个所述电致驱动片通过一个所述固定件与所述环形结构件连接。
- 根据权利要求5所述的驱动装置,其中,所述固定件包括上垫片和下垫片,所述上垫片和所述下垫片分别与所述电致驱动片的第一表面和第二表面相接触。
- 根据权利要求6所述的驱动装置,还包括电路板,所述电路板设置在所述壳体与所述环形结构件之间的间隙处,所述固定件与所述电路板电连接,其中,当所述固定件与所述电路板电导通时,施加在所述上垫片和所述下垫片上的电压极性相反,从而使得施加在所述电致驱动片的所述第一表面和所 述第二表面上的电压极性相反,使得所述电致驱动片发生形变,驱动所述载体移动。
- 根据权利要求2所述的驱动装置,其中,所述电致驱动片为离子传导驱动片,所述离子传导驱动片包括离子交换树脂层以及分别设置于所述离子交换树脂层相对的两个表面的第一电极层和第二电极层,所述离子交换树脂层内具有聚合物电解质。
- 根据权利要求8所述的驱动装置,其中,在施加于所述离子传导驱动片的电压为第一电压的情况下,所述离子传导驱动片驱动所述载体沿第一方向移动;在施加于所述离子传导驱动片的电压为第二电压的情况下,所述离子传导驱动片驱动所述载体沿第二方向移动;其中,所述第一电压和所述第二电压极性相反,所述第一方向与所述第二方向互为反方向。
- 根据权利要求8所述的驱动装置,其中,在施加于所述离子传导驱动片的电压为第一电压的情况下,所述离子传导驱动片驱动所述载体沿第一方向移动第一距离;在施加于所述离子传导驱动片的电压为第三电压的情况下,所述离子传导驱动片驱动所述载体沿第一方向移动第二距离;其中,所述第一电压和所述第三电压极性相同,且所述第三电压大于所述第一电压,所述第一距离与所述第二距离不同。
- 根据权利要求8所述的驱动装置,其中,在施加于所述离子传导驱动片的电压为第一电压的情况下,所述离子传导驱动片以第一速率驱动所述载体沿第一方向移动;在施加于所述离子传导驱动片的电压为第三电压的情况下,所述离子传导驱动片以第二速率驱动所述载体沿第一方向移动;其中,所述第一电压和所述第三电压极性相同,且所述第三电压大于所述第一电压,所述第一速率与所述第二速率不同。
- 一种摄像头模组,包括第一驱动装置,所述第一驱动装置为权利要求1-11中任一项所述的驱动装置。
- 根据权利要求12所述的摄像头模组,其中,所述第一驱动装置中的载体用于承载的功能器件为第一镜片或第一镜片组,且所述摄像头模组还包括第二驱动装置,所述第二驱动装置为权利要求1-9中任一项所述的驱动装置,所述第二驱动装置中的载体用于承载的功能器件为第二镜片或第二镜片组。
- 根据权利要求13所述的摄像头模组,其中,所述第一镜片或第一镜片组为变倍组,所述变倍组由两片非球面镜片组成;当向所述第一驱动装置的电致驱动组件施加电压时,所述电致驱动组件产生形变驱动所述第一驱动装置中的所述载体移动,从而移动所述变倍组。
- 根据权利要求13所述的摄像头模组,其中,所述第二镜片或第二镜片组为补偿组,所述补偿组由一片非球面镜片组成;当向所述第二驱动装置的电致驱动组件施加电压时,所述电致驱动组件产生形变驱动所述第二驱动装置中的所述载体移动,从而移动所述补偿组,以补偿所述变倍组移动引起的像面移动。
- 根据权利要求13所述的摄像头模组,还包括棱镜,所述棱镜在所述摄像头模组的光路上设在所述第一镜片或第一镜片组之前。
- 根据权利要求13所述的摄像头模组,还包括后固定组,所述后固定组在所述光路上设在所述第二镜片或第二镜片组之后。
- 根据权利要求13所述的摄像头模组,还包括滤色片,所述滤色片在所述光路上设在所述后固定组之后。
- 根据权利要求13所述的摄像头模组,还包括感光芯片,所述感光芯片在所述光路上设在所述滤色片之后。
- 一种电子设备,包括权利要求1-11中任一项所述的驱动装置。
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