WO2015162917A1 - アクチュエーター、カメラモジュール、及びカメラ付き携帯端末 - Google Patents
アクチュエーター、カメラモジュール、及びカメラ付き携帯端末 Download PDFInfo
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- WO2015162917A1 WO2015162917A1 PCT/JP2015/002184 JP2015002184W WO2015162917A1 WO 2015162917 A1 WO2015162917 A1 WO 2015162917A1 JP 2015002184 W JP2015002184 W JP 2015002184W WO 2015162917 A1 WO2015162917 A1 WO 2015162917A1
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- base member
- coil
- actuator
- disposed
- camera
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Images
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
- G02B27/646—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake
-
- 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
- G03B5/02—Lateral adjustment of lens
-
- 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
-
- 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
- G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
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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
- G03B5/04—Vertical adjustment of lens; Rising fronts
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
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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
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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
- H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
- H04N23/681—Motion detection
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- H—ELECTRICITY
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- 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
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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
- G03B2205/0007—Movement of one or more optical elements for control of motion blur
- G03B2205/0023—Movement of one or more optical elements for control of motion blur by tilting or inclining one or more optical elements with respect to the optical axis
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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
- G03B2205/0069—Driving means for the movement of one or more optical element using electromagnetic actuators, e.g. voice coils
Definitions
- the present invention relates to a camera shake correction actuator, a camera module having a camera shake correction function, and a camera-equipped mobile terminal.
- a small camera module is mounted on a mobile terminal such as a smartphone.
- Some cameras have an autofocus function that automatically adjusts the focus when shooting a subject and a camera shake correction function (OIS: Optical Image Stabilization) that reduces image distortion by correcting camera shake (vibration) that occurs during shooting.
- OIS Optical Image Stabilization
- a module tilt method in which an imaging module is tilted integrally is known (for example, Patent Document 1).
- the imaging module is a module having a lens portion and an imaging element (for example, a CCD (Charge Coupled Device)), and includes a module having an autofocus actuator.
- the autofocus actuator is referred to as “AF actuator”
- the camera shake correction actuator is referred to as “OIS actuator”.
- FIG. 1 is an external view showing an example of a conventional module tilt type camera module.
- FIG. 2 is an exploded perspective view showing an example of a conventional module tilt type camera module.
- the conventional module tilt type camera module 2 includes a fixed portion 21, a movable portion 22, an elastic support portion 23, an imaging module 24, and a shake detection portion 25.
- the fixed portion 21, the movable portion 22, and the elastic support portion 23 constitute an OIS actuator.
- the fixing portion 21 includes a base member 211, a coil portion 212, and an OIS printed wiring board 213.
- the coil unit 212 is disposed on the base member 211.
- the printed wiring board for OIS 213 supplies power to the coil unit 212 and outputs a detection signal from the shake detection unit 25 to the control unit.
- the movable part 22 includes a yoke 221, a magnet part 222, a top plate 223, and a module guide 224.
- the yoke 221 and the magnet part 222 are disposed in the respective accommodating parts formed on the top plate 223.
- the module guide 224 is fixed to the top plate 223.
- the imaging module 24 is arranged and fixed in a space sandwiched between a set of module guides 224.
- the elastic support portion 23 has a biaxial gimbal mechanism, and the movable portion 22 (top plate 223) is fixed to the outer gimbal.
- the elastic support portion 23 is arranged in a state of floating in the approximate center of the base member 211 and is fixed by a stopper 231.
- the elastic support portion 23 supports the movable portion 22 so as to be able to swing and rotate about the X axis and the Y axis orthogonal to the optical axis (Z axis), that is, to support the tilt.
- the shake detection unit 25 is composed of, for example, a gyro sensor that detects the angular velocity of the imaging module 24.
- the shake detection unit 25 is fixed to the side surface of the module guide 224 of the movable unit 22.
- the detection signal of the shake detection unit 25 is output to the control unit via the OIS printed wiring board 213 which is the fixing unit 21.
- the coil unit 212 and the magnet unit 222 constitute an OIS voice coil motor (VCM). That is, when a current flows through the coil unit 212, Lorentz force is generated in the coil unit 212 due to the interaction between the magnetic field of the magnet unit 222 and the current flowing through the coil unit 212 (Fleming's left-hand rule). Since the coil portion 212 is fixed, a reaction force acts on the magnet portion 222. This reaction force becomes the driving force of the voice coil motor for OIS.
- the movable portion 22 swings and rotates until the driving force of the OIS voice coil motor and the restoring force (return force) of the elastic support portion 23 are balanced. Thereby, the optical axis shift due to camera shake is corrected, and the optical axis direction is kept constant.
- An object of the present invention is to provide an actuator capable of realizing further reduction in height, a camera module including the actuator, and a camera-equipped mobile terminal.
- An actuator according to the present invention is an actuator that performs shake correction by inclining a driven part by a driving force of a voice coil motor having a coil part and a magnet part.
- a movable part having a flat frame-like holding member to which the driven part is bonded, and wherein either one of the coil part and the magnet part is disposed on the holding member;
- a fixing member having a base member and a frame-shaped cover member fixed to a peripheral edge of the base member, and the other of the coil part and the magnet part being disposed on the base member;
- a support portion disposed on the base member and supporting the movable portion so as to be tiltable with respect to the fixed portion; The movable portion is sandwiched between the base member and the cover member.
- a camera module includes the actuator described above, An imaging module having a lens part and an imaging element and bonded to the holding member as the driven part; And a shake detection unit that detects shake of the imaging module.
- a mobile terminal with a camera according to the present invention includes the above camera module.
- the present invention since the number of parts is reduced as compared with the conventional configuration, it is possible to further reduce the height and facilitate the assembly process.
- FIG. 3 is a diagram showing a smartphone M equipped with the camera module 1 according to the embodiment of the present invention.
- 3A is a front view of the smartphone M
- FIG. 3B is a rear view of the smartphone M.
- the smartphone M is equipped with a camera module 1 as a rear camera OC, for example.
- the camera module 1 has an autofocus function and a camera shake correction function, automatically performs focusing when shooting a subject, and corrects camera shake (vibration) generated during shooting to shoot an image without image blur. Can do.
- a module tilt method is employed for the camera shake correction function of the camera module 1.
- the module tilt method has an advantage that no distortion occurs in the four corners of the screen.
- FIG. 4 is an external perspective view of the camera module 1.
- FIG. 5 is an exploded perspective view of the camera module 1.
- FIG. 6 is a cross-sectional view of the camera module 1 along the Y direction.
- FIG. 7 is a cross-sectional view of the camera module 1 along the X direction.
- X orthogonal coordinate system
- the camera module 1 includes a fixed portion 11, a movable portion 12, an elastic support portion 13, an imaging module 14, a shake detection portion 15, and the like.
- the fixed portion 11, the movable portion 12, and the elastic support portion 13 constitute an OIS actuator A.
- OIS actuator A camera shake correction is performed using the driving force of the voice coil motor for OIS having the coil portion 112 and the magnet portion 122.
- the fixing unit 11 is fixed so as not to move when mounted on the smartphone M.
- the fixing part 11 includes a base member 111, a coil part 112, an OIS printed wiring board 113, a skirt member 114, and a cover member 115.
- the base member 111 is a substantially rectangular member made of a metal material. By making the base member 111 made of metal, the strength becomes higher than that made of resin, so that the base member 111 can be made thinner, and thus the camera module 1 can be lowered in height.
- the base member 111 has a truncated pyramidal protrusion 111a for fixing the elastic support portion 13 at the center.
- the base member 111 has an upright piece 111b for positioning the coil portion 112 around the protruding portion 111a.
- the base member 111 has a locking piece 111c for fixing the skirt member 114 at each end of the peripheral edge along the X direction. When the skirt member 114 is attached to the base member 111, the locking piece 111c generates an outward urging force in the Y direction.
- the base member 111 has power supply pads 111d for supplying power to the coil portion 112 at the four corners.
- the coil part 112 is composed of four tilt coils 112A to 112D, and is arranged on the base member 111 so as to surround the protruding part 111a.
- the coil part 112 is positioned by the standing piece 111 b of the base member 111. Power is supplied to the coil portion 112 through the power supply pad 111d.
- the tilt coils 112A and 112C face each other in the X direction, and are used when the movable part 12 is rotated and oscillated around the Y axis.
- the tilt coils 112B and 112D are opposed to each other in the Y direction, and are used when the movable portion 12 is rotated and swung around the X axis.
- the OIS printed wiring board 113 has a power supply line (not shown) for supplying power to the coil section 112.
- the OIS printed wiring board 113 is fixed to the bottom surface of the base member 111, and the power supply line is electrically connected to the power supply pad 111 d of the base member 111.
- the skirt member 114 is a frame-shaped member in which four wall bodies are connected in a rectangular shape, and has a receiving port 114a of the imaging module 14.
- the skirt member 114 has a locking portion 114 b at a position corresponding to the locking piece 111 c of the base member 111.
- the upper part of the wall constituting one side of the skirt member 114 is cut out to form a lead-out portion 114c for pulling out the printed wiring board 143 of the imaging module 14.
- the upper part of the wall body on the remaining three sides of the skirt member 114 is formed so as to slightly protrude inward, and serves as a restricting portion 114d for preventing the movable portion 12 from being excessively inclined.
- the skirt member 114 is fixed to the periphery of the base member 111 after the movable portion 12 is attached to the base member 111 via the elastic support portion 13.
- the movable portion 12 is sandwiched between the base member 111 and the skirt member 114.
- the cover member 115 is a covered rectangular cylindrical member.
- the cover member 115 has an opening 115a on the upper surface thereof so that the lens portion 141 of the imaging module 14 faces the outside.
- the cover member 115 is fixed to the skirt member 114 after the imaging module 14 is mounted on the actuator A for OIS.
- the movable part 12 swings and rotates about the X axis and the Y axis with respect to the fixed part 11.
- the movable part 12 has a yoke 121 and a magnet part 122.
- the yoke 121 directly holds the imaging module 14.
- the imaging module 14 is bonded to the upper surface of the yoke 121 with a double-sided tape 123, for example. Instead of the double-sided tape 123, the imaging module 14 may be bonded to the yoke 121 using a resin adhesive. Even if a positioning member such as the module guide described in Patent Document 1 is not used, the imaging module 14 can be positioned and fixed to the yoke 121 with high accuracy by using a jig.
- the yoke 121 is a flat frame member in which four flat plates made of a magnetic material are connected in a rectangular shape, and has a receiving port 121a of the imaging module 14.
- the yoke 121 has an outer leg 121b formed in an eave shape downward along the outer peripheral edge of each flat plate.
- the yoke 121 has an inner leg 121c formed in a bowl shape downward along the inner peripheral edge of each flat plate. That is, the cross-sectional shape of one side of the yoke 121 is partially “U” -shaped or “L” -shaped.
- the yoke 121 has fixing pieces 121d for fixing the elastic support portion 13 at the four corners of the inner peripheral edge portion.
- the magnet unit 122 includes four rectangular parallelepiped permanent magnets 122A to 122D corresponding to the tilt coils 112A to 112D.
- An electromagnet may be used instead of the permanent magnet.
- the size of the permanent magnets 122A to 122D is set to be within the tilt coils 112A to 112D.
- the permanent magnets 122A to 122D are arranged on the lower surface of each flat plate of the yoke 121 so that the magnetization direction is the Z direction, and fixed by, for example, adhesion. By using the jig, the permanent magnets 122A to 122D can be positioned and fixed to the yoke 121 with high accuracy. Permanent magnets 122A to 122D are located between the inner leg 121c and the outer leg 121b of the yoke 121.
- the coil portion 112 is positioned between the yoke 121 and the magnet portion 122 (see FIGS. 5 and 6). Since the periphery of the coil portion 112 is covered by the yoke 121, it is possible to avoid the AF actuator of the imaging module 14 from being adversely affected due to the magnetic field caused by the energization current of the coil portion 112.
- the elastic support portion 13 is composed of a rectangular member (so-called gimbal spring) having a biaxial gimbal mechanism. Specifically, as shown in FIG. 8, the elastic support portion 13 includes a central portion 13a and an outer gimbal that is connected to the central portion 13a with an inner gimbal 13b interposed therebetween and that rotates and swings about the X and Y axes. 13c.
- the inner gimbal 13b has an intricate curved shape
- the outer gimbal 13c has a rectangular frame shape.
- the central portion 13a of the elastic support portion 13 is bonded or welded to the protruding portion 111a of the base member 111, and the fixed pieces 121d of the yoke 121 are bonded or welded to the protruding pieces 13d at the four corners of the outer gimbal 13b.
- the movable portion 12 is arranged in a state of floating in the approximate center of the base member 211, and can swing and rotate about the X axis and the Y axis. Since the elastic support portion 13 is fixed to the base member 111 by adhesion, a locking member such as the stopper described in Patent Document 1 is not necessary.
- the imaging module 14 includes a lens unit 141, an imaging element (not shown), an AF actuator 142, and an AF printed wiring board 143.
- the imaging element is configured by, for example, a CCD (charge coupled device) type image sensor, a CMOS (complementary metal oxide semiconductor) type image sensor, or the like.
- the image sensor (not shown) is mounted on the AF printed wiring board 143.
- the image sensor (not shown) captures the subject image formed by the lens unit 141.
- the AF actuator 142 has, for example, an AF voice coil motor, and moves the lens unit 141 in the optical axis direction by using the driving force of the AF voice coil motor.
- a known technique can be applied to the AF actuator 142.
- the AF printed wiring board 143 includes a power line (not shown) for supplying power to a coil portion (not shown) of the AF actuator 142, a signal line (not shown) for a video signal output from the image sensor, and shake detection. It has a signal line (not shown) for detection signals output from the unit 15.
- the imaging module 14 is mounted on the OIS actuator A, the AF printed wiring board 143 is pulled out to the outside through the lead-out portion 114c of the skirt member 114.
- the AF printed wiring board 143 may be branched in the middle, and separate connectors may be attached to the video signal signal line and the detection signal signal line.
- the shake detection unit 15 detects a shake (movement) of the imaging module 14.
- the shake detection unit 15 is composed of, for example, a gyro sensor that detects the angular velocity of the imaging module 14.
- the shake detection unit 15 is mounted on the standing part 143a of the AF printed wiring board 143.
- the detection signal of the shake detection unit 15 is output to the control unit via the AF printed wiring board 143.
- the control unit controls the energization current of the coil unit 112 based on the detection signal.
- the control unit (not shown) may be mounted on the AF printed wiring board 143, or a control unit mounted on the smartphone M may be used.
- the shake detection unit 25 is attached to the movable unit 22 (module guide 224), and the detection signal of the shake detection unit 25 is a printed wiring for OIS that serves as the fixed unit 21. It is output via the substrate 213.
- the OIS printed wiring board 213 hinders the swinging rotation of the movable portion 22 and decreases the sensitivity of the tilt operation, so that the driving force of the OIS actuator inevitably increases.
- the detection signal of the shake detection unit 15 is output via the AF printed wiring board 143 of the imaging module 14. That is, the swinging rotation of the movable portion 12 (imaging module 14) is not hindered by the OIS printed wiring board 113 of the fixed portion 11. Therefore, the driving force of the OIS actuator A can be reduced as compared with the conventional one, and the power consumption can be reduced. Further, since the OIS printed wiring board 113 of the fixed part 11 is used only for supplying power to the coil part 112, it can be omitted by preparing a separate power line. Thereby, cost reduction and space saving can be achieved.
- the coil part 112 and the magnet part 122 constitute an OIS voice coil motor.
- the imaging module 14 (movable part 12) is held at a neutral position where the optical axis coincides with the Z direction.
- the movable portion 12 including the imaging module 14 swings and rotates about the Y axis with the central portion 13a of the elastic support portion 13 as a fulcrum.
- the movable unit 12 including the imaging module 14 is centered on the X-axis with the central portion 13a of the elastic support portion 13 as a fulcrum. Oscillate and rotate. The movable portion 12 swings and rotates until the driving force of the OIS voice coil motor (the force acting on the magnet portion 122) and the restoring force of the elastic support portion 13 are balanced.
- the energization current of the coil unit 112 is controlled based on the detection result of the shake detection unit 15 so that the shake of the imaging module 14 is offset by the swing rotation of the movable unit 12.
- the optical axis shift due to camera shake is corrected, and the optical axis direction is kept constant.
- the swinging rotation of the movable portion 12 is restricted by the restricting portion 114d of the skirt member 114, it is possible to prevent the movable portion 12 from excessively swinging and rotating due to a drop impact or the like.
- the actuator A performs shake correction by inclining the driven part (imaging module 14) by the driving force of the voice coil motor having the coil part (112) and the magnet part (122).
- the actuator A has a flat frame-shaped holding member (yoke 121) to which a driven part (imaging module 14) is bonded, and a movable part (12) in which a magnet part (122) is arranged on the holding member (121). ) And a frame-like cover member (skirt member 114) fixed to the periphery of the base member (11) and the base member (111), and the coil portion (112) is disposed on the base member (111).
- a support portion (elastic support portion 13) that is arranged on the base member (111) and supports the movable portion (12) so as to be tiltable with respect to the fixed portion (11).
- the movable part (12) is sandwiched between the base member (111) and the cover member (114).
- the actuator A since the number of parts is reduced as compared with the conventional configuration, the height can be further reduced and the assembly process is facilitated. Further, the camera module 1 can be easily completed simply by bonding the imaging module 14 with an autofocus function to the yoke 121.
- a so-called moving magnet type actuator in which the fixed portion 11 has the coil portion 112 and the movable portion 12 has the magnet portion 122 has been described.
- the fixed portion has the magnet portion.
- the present invention can also be applied to a so-called moving coil type actuator in which the movable part has a coil part.
- the yoke is also disposed on the fixed portion.
- two sets of the tilt coil 112A, the permanent magnet 122A, the tilt coil 112C, and the permanent magnet 122C are arranged as a voice coil motor that swings and rotates the movable portion 12 around the X axis, and the Y axis is
- Two sets of the tilt coil 112B, the permanent magnet 122B, the tilt coil 112D, and the permanent magnet 122D are arranged as a voice coil motor that swings and rotates the movable portion 12 at the center. If at least one set is arranged, respectively. Good.
- a photo reflector in addition to the gyro sensor, a photo reflector, a magnetic sensor, an inductance detection by a coil, a strain sensor, or the like can be applied.
- a detection element for example, a light receiving element of a photo reflector, a Hall element of a magnetic sensor, or the like
- each part which comprises the actuator A is comprised with a material with high heat resistance (especially magnet part 122). Thereby, it can respond to the soldering by a reflow system.
- a conductive shield case may be provided outside the camera module 1.
- a smartphone is described as an example of a camera-equipped mobile terminal.
- the present invention is also applied to a camera-equipped mobile phone, a notebook computer, a tablet terminal, a portable game machine, a web camera, an in-vehicle camera, and the like. Applicable.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Optics & Photonics (AREA)
- Adjustment Of Camera Lenses (AREA)
- Studio Devices (AREA)
Abstract
Description
手振れ補正の方式としては、撮像モジュールを一体的に傾けるモジュールチルト方式が知られている(例えば特許文献1)。撮像モジュールとは、レンズ部と撮像素子(例えばCCD(Charge Coupled Device))を有するモジュールであり、オートフォーカス用のアクチュエーターを有するものも含まれる。
以下において、オートフォーカス用のアクチュエーターを「AF用アクチュエーター」、手振れ補正用のアクチュエーターを「OIS用アクチュエーター」と称する。
図1、2に示すように、従来のモジュールチルト方式のカメラモジュール2は、固定部21、可動部22、弾性支持部23、撮像モジュール24、及び振れ検出部25を備える。固定部21、可動部22、及び弾性支持部23によって、OIS用アクチュエーターが構成される。
前記被駆動部が接着される平枠状の保持部材を有し、前記保持部材に前記コイル部及び前記マグネット部の何れか一方が配置されてなる可動部と、
ベース部材及び前記ベース部材の周縁部に固定される枠状のカバー部材を有し、前記ベース部材に前記コイル部及び前記マグネット部の何れか他方が配置されてなる固定部と、
前記ベース部材に配置され、前記固定部に対して前記可動部を傾斜可能に支持する支持部と、を備え、
前記ベース部材と前記カバー部材との間に前記可動部が挟装されていることを特徴とする。
レンズ部及び撮像素子を有し、前記被駆動部として前記保持部材に接着される撮像モジュールと、
前記撮像モジュールの振れを検出する振れ検出部と、を備えることを特徴とする。
図3は、本発明の一実施の形態に係るカメラモジュール1を搭載するスマートフォンMを示す図である。図3AはスマートフォンMの正面図であり、図3BはスマートフォンMの背面図である。
ここでは、図4~7に示されるように、直交座標系(X,Y,Z)を使用して説明する。カメラモジュール1は、スマートフォンMで実際に撮影が行われる場合に、X方向が上下方向(又は左右方向)、Y方向が左右方向(又は上下方向)、Z方向が前後方向となるように搭載される。
特許文献1に記載のモジュールガイドのような位置決め部材を用いなくても、治具を使用することにより、ヨーク121に撮像モジュール14を高精度で位置決めして固定することができる。
AF用プリント配線基板143は、OIS用アクチュエーターAに撮像モジュール14を搭載したときに、スカート部材114の引出部114cを介して外部に引き出される。AF用プリント配線基板143を途中で枝分かれさせて、映像信号用の信号ラインと検出信号用の信号ラインに別々のコネクタを装着するようにしてもよい。
なお、制御部(図示略)は、AF用プリント配線基板143に実装するようにしてもよいし、スマートフォンMに実装されている制御部を利用するようにしてもよい。
同様に、Y軸方向に対向するチルトコイル112B、112Dに互いに逆向きの電流を流すと、撮像モジュール14を含む可動部12は、弾性支持部13の中央部13aを支点として、X軸を中心に揺動回転する。
OIS用ボイスコイルモーターの駆動力(マグネット部122に働く力)と、弾性支持部13の復元力が釣り合うまで、可動部12は揺動回転する。
また、スカート部材114の規制部114dによって可動部12の揺動回転が規制されるので、落下衝撃等によって可動部12が過剰に揺動回転するのを防止することができる。
また、ノイズ対策として、カメラモジュール1の外側に導電性のシールドケースを設けるようにしてもよい。
11 固定部
111 ベース部材
112 コイル部
113 プリント配線基板
114 スカート部材(カバー部材)
115 カバー部材
12 可動部
121 ヨーク(保持部材)
122 マグネット部
123 両面テープ
13 弾性支持部(支持部)
14 撮像モジュール(被駆動部)
141 レンズ部
142 AF用アクチュエーター
143 AF用プリント配線基板
15 振れ検出部
A アクチュエーター
M スマートフォン(カメラ付き携帯端末)
Claims (11)
- 被駆動部を、コイル部及びマグネット部を有するボイスコイルモーターの駆動力によって傾斜させて振れ補正を行うアクチュエーターであって、
前記被駆動部が接着される平枠状の保持部材を有し、前記保持部材に前記コイル部及び前記マグネット部の何れか一方が配置されてなる可動部と、
ベース部材及び前記ベース部材の周縁部に固定される枠状のカバー部材を有し、前記ベース部材に前記コイル部及び前記マグネット部の何れか他方が配置されてなる固定部と、
前記ベース部材に配置され、前記固定部に対して前記可動部を傾斜可能に支持する支持部と、を備え、
前記ベース部材と前記カバー部材との間に前記可動部が挟装されていることを特徴とするアクチュエーター。 - 前記保持部材に前記マグネット部が配置され、前記ベース部材に前記コイル部が配置されることを特徴とする請求項1に記載のアクチュエーター。
- 前記保持部材は、磁性材料からなるヨークであることを特徴とする請求項2に記載のアクチュエーター。
- 前記保持部材に前記コイル部が配置され、前記ベース部材に前記マグネット部が配置されることを特徴とする請求項1に記載のアクチュエーター。
- 前記支持部は、直交する2つの回転軸を有する2軸ジンバル機構を有する弾性支持部材で構成され、前記2つの回転軸が前記撮像モジュールの光軸方向に直交するように配置され、外側ジンバルに前記保持部材が固定されることを特徴とする請求項1に記載のアクチュエーター。
- 請求項1に記載のアクチュエーターと、
レンズ部及び撮像素子を有し、前記被駆動部として前記保持部材に接着される撮像モジュールと、
前記撮像モジュールの振れを検出する振れ検出部と、を備えることを特徴とするカメラモジュール。 - 前記振れ検出部は、前記可動部又は前記撮像モジュールに取り付けられる検出素子を有し、前記検出素子の検出信号が前記撮像モジュールのプリント配線基板を介して出力されることを特徴とする請求項6に記載のカメラモジュール。
- 前記振れ検出部は、前記撮像モジュールの角速度を検出するジャイロセンサーで構成されることを特徴とする請求項7に記載のカメラモジュール。
- 前記振れ検出部から出力される検出信号に基づいて、前記コイル部への給電を制御する制御部を備えることを特徴とする請求項6に記載のカメラモジュール。
- 前記撮像モジュールは、オートフォーカス機能を有することを特徴とする請求項6に記載のカメラモジュール。
- 請求項6に記載のカメラモジュールを備えることを特徴とするカメラ付き携帯端末。
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US15/305,868 US9746690B2 (en) | 2014-04-25 | 2015-04-22 | Actuator, camera module, and mobile terminal with camera |
EP15783578.6A EP3136166B1 (en) | 2014-04-25 | 2015-04-22 | Actuator, camera module, and mobile terminal with camera |
KR1020167026730A KR102292067B1 (ko) | 2014-04-25 | 2015-04-22 | 액추에이터, 카메라 모듈, 및 카메라 부착 휴대 단말 |
CN201580021240.2A CN106233197B (zh) | 2014-04-25 | 2015-04-22 | 致动器、摄像机模块、以及搭载有摄像机的移动终端 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019037160A1 (zh) * | 2017-08-25 | 2019-02-28 | 高瞻创新科技有限公司 | 一种具有多自由度的电路板及防抖微型致动器 |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6507628B2 (ja) * | 2014-12-24 | 2019-05-08 | ミツミ電機株式会社 | アクチュエーター、カメラモジュール及びカメラ搭載装置 |
JP6488161B2 (ja) * | 2015-03-13 | 2019-03-20 | オリンパス株式会社 | ブレ補正装置 |
US10353216B2 (en) * | 2015-07-14 | 2019-07-16 | Nidec Sankyo Corporation | Optical unit with shake correction function and its manufacturing method |
CN107238910B (zh) * | 2016-03-29 | 2023-08-15 | 台湾东电化股份有限公司 | 镜头驱动装置 |
US9958756B2 (en) * | 2016-05-20 | 2018-05-01 | Tdk Taiwan Corp. | Camera module and image capturing unit thereof |
CN108319093B (zh) * | 2017-01-18 | 2021-08-06 | 三美电机株式会社 | 透镜驱动装置、摄像机模块以及摄像机搭载装置 |
TWI781985B (zh) * | 2017-03-09 | 2022-11-01 | 美商康寧公司 | 具有自動對焦與光學圖像穩定功能的相機模組 |
CN207010790U (zh) * | 2017-04-17 | 2018-02-13 | 三赢科技(深圳)有限公司 | 成像模组 |
JP6997370B2 (ja) * | 2017-05-25 | 2022-01-17 | ミツミ電機株式会社 | カメラ用アクチュエータ、カメラモジュール、およびカメラ搭載装置 |
CN108931874A (zh) * | 2017-05-27 | 2018-12-04 | 新思考电机有限公司 | 双轴倾斜活动装置、照相装置、光学装置以及电子设备 |
CN109143721B (zh) * | 2017-06-27 | 2024-03-15 | 新思考电机有限公司 | 光学部件用倾斜活动装置、摄像装置、光学装置以及电子设备 |
CN107329348B (zh) * | 2017-07-12 | 2022-12-30 | 惠州萨至德光电科技有限公司 | 一种带防抖功能的透镜驱动装置 |
WO2019216590A1 (en) * | 2018-05-11 | 2019-11-14 | Lg Electronics Inc. | Camera for electronic device |
CN111193346A (zh) * | 2018-11-15 | 2020-05-22 | 三赢科技(深圳)有限公司 | 音圈马达 |
CN111212199A (zh) * | 2018-11-21 | 2020-05-29 | 北京小米移动软件有限公司 | 驱动机构、摄像头模组及电子设备 |
US20200236254A1 (en) * | 2019-01-23 | 2020-07-23 | Black Seasme International Holding Limited | Camera system with reduced alignment shift |
KR20210060035A (ko) | 2019-11-18 | 2021-05-26 | 엘지이노텍 주식회사 | 카메라 모듈 및 광학 기기 |
CN111212214B (zh) * | 2020-03-19 | 2021-11-30 | 维沃移动通信有限公司 | 防抖机构、摄像头模组及电子设备 |
CN114384661B (zh) * | 2020-10-02 | 2024-05-17 | 日本电产三协株式会社 | 光学单元 |
JP7237914B2 (ja) * | 2020-12-21 | 2023-03-13 | ジョウシュウシ レイテック オプトロニクス カンパニーリミテッド | 撮像装置用防振機構、光学系、カメラ及び電子機器 |
JP7137610B2 (ja) * | 2020-12-21 | 2022-09-14 | ジョウシュウシ レイテック オプトロニクス カンパニーリミテッド | 撮像装置用防振機構、光学系、カメラ及び電子機器 |
WO2023167510A1 (ko) * | 2022-03-02 | 2023-09-07 | 엘지이노텍 주식회사 | 카메라 모듈 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011027947A (ja) * | 2009-07-24 | 2011-02-10 | Nidec Sankyo Corp | 光学ユニット |
JP2014010287A (ja) * | 2012-06-29 | 2014-01-20 | Mitsumi Electric Co Ltd | カメラモジュール駆動装置およびカメラ付き携帯端末 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007127755A (ja) * | 2005-11-02 | 2007-05-24 | Nikon Corp | 像振れ補正装置、光学装置、交換レンズ、及びカメラシステム |
JP2007156351A (ja) * | 2005-12-08 | 2007-06-21 | Sony Corp | 像ぶれ補正装置、レンズ装置及び撮像装置 |
JP5846346B2 (ja) * | 2009-08-21 | 2016-01-20 | ミツミ電機株式会社 | カメラの手振れ補正装置 |
WO2011132920A2 (ko) * | 2010-04-20 | 2011-10-27 | 주식회사 뮤타스 | 카메라 모듈용 보이스 코일 모터 |
JP5604237B2 (ja) | 2010-09-09 | 2014-10-08 | 日本電産サンキョー株式会社 | 振れ補正機能付き光学ユニット |
US9035502B2 (en) * | 2011-02-07 | 2015-05-19 | Lg Innotek Co., Ltd. | Multifunctional voice coil motor |
-
2014
- 2014-04-25 JP JP2014091874A patent/JP6311434B2/ja active Active
-
2015
- 2015-04-22 US US15/305,868 patent/US9746690B2/en active Active
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- 2015-04-22 KR KR1020167026730A patent/KR102292067B1/ko active IP Right Grant
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- 2015-04-22 WO PCT/JP2015/002184 patent/WO2015162917A1/ja active Application Filing
- 2015-04-24 TW TW104113137A patent/TWI662770B/zh not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011027947A (ja) * | 2009-07-24 | 2011-02-10 | Nidec Sankyo Corp | 光学ユニット |
JP2014010287A (ja) * | 2012-06-29 | 2014-01-20 | Mitsumi Electric Co Ltd | カメラモジュール駆動装置およびカメラ付き携帯端末 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3136166A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019037160A1 (zh) * | 2017-08-25 | 2019-02-28 | 高瞻创新科技有限公司 | 一种具有多自由度的电路板及防抖微型致动器 |
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