WO2022137938A1 - Dispositif d'entraînement d'élément optique, module de caméra et dispositif équipé d'une caméra - Google Patents

Dispositif d'entraînement d'élément optique, module de caméra et dispositif équipé d'une caméra Download PDF

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Publication number
WO2022137938A1
WO2022137938A1 PCT/JP2021/042783 JP2021042783W WO2022137938A1 WO 2022137938 A1 WO2022137938 A1 WO 2022137938A1 JP 2021042783 W JP2021042783 W JP 2021042783W WO 2022137938 A1 WO2022137938 A1 WO 2022137938A1
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WO
WIPO (PCT)
Prior art keywords
mirror
sliding
optical element
unit
holding
Prior art date
Application number
PCT/JP2021/042783
Other languages
English (en)
Japanese (ja)
Inventor
智彦 大坂
俊 鈴木
Original Assignee
ミツミ電機株式会社
智彦 大坂
俊 鈴木
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by ミツミ電機株式会社, 智彦 大坂, 俊 鈴木 filed Critical ミツミ電機株式会社
Publication of WO2022137938A1 publication Critical patent/WO2022137938A1/fr

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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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • 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
    • 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
    • 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
    • G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof

Definitions

  • the present invention relates to an optical element drive device, a camera module, and a camera-mounted device.
  • a camera module mounted on a thin camera-mounted device such as a smartphone is known.
  • a camera module is known to include an optical element driving device having an optical element that bends incident light along a predetermined direction in a direction toward the image pickup element (see, for example, Patent Document 1).
  • the camera module has a shake correction function that optically corrects the shake (vibration) that occurs during shooting and reduces image distortion by rotationally driving the optical element according to the direction of the incident light by this optical element drive device.
  • OIS Optical Image Stabilization
  • an optical element driving device for example, a configuration is generally known in which an optical element is rotatably configured around a rotation axis along a direction parallel to a reflection surface of the optical element to drive the optical element to rotate. ..
  • An object of the present invention is to provide an optical element driving device, a camera module, and a camera-mounted device capable of reliably holding an optical element.
  • the optical element driving device is A movable part capable of holding an optical element that bends incident light along the first direction so as to travel toward one side in the second direction.
  • a guide portion that guides the movement of the movable portion and A drive unit that drives the movable portion so as to move on the guide portion,
  • a rolling element arranged between the movable portion and the guide portion,
  • a pressurization generation part that generates a pressurization that attracts the movable part to the guide part side via the rolling element, and a pressurization generation part.
  • the camera module according to the present invention is With the above optical element drive device, An optical element portion including the optical element held by the movable portion, and an optical element portion. An image pickup unit that captures an image of a subject imaged by the optical element unit, and an image pickup unit. To prepare for.
  • the camera-mounted device is A camera-mounted device that is an information device or a transportation device.
  • An image pickup control unit that processes image information obtained by the camera module, and To prepare for.
  • the optical element can be reliably held.
  • FIG. 1A and 1B are views showing a smartphone equipped with a camera module.
  • FIG. 2 is a diagram simply showing the camera module 1 according to the embodiment of the present invention.
  • FIG. 3 is a diagram simply showing a configuration in which the camera module 1 according to the present embodiment is viewed from the side.
  • the camera module 1 is mounted on a thin camera-mounted device such as a smartphone M (see FIGS. 1A and 1B), a mobile phone, a digital camera, a notebook computer, a tablet terminal, a portable game machine, and an in-vehicle camera.
  • a smartphone M see FIGS. 1A and 1B
  • a mobile phone such as a smartphone M (see FIGS. 1A and 1B), a mobile phone, a digital camera, a notebook computer, a tablet terminal, a portable game machine, and an in-vehicle camera.
  • a Cartesian coordinate system (X, Y, Z) is used. Also in the figure described later, it is shown by a common Cartesian coordinate system (X, Y, Z).
  • the camera module 1 is mounted so that, for example, the X direction is the left-right direction, the Y direction is the up-down direction, and the Z direction is the front-back direction when shooting is actually performed by the camera-mounted device.
  • the light from the subject is incident from the + side (plus side) in the Z direction, bends, and is guided to the + side in the Y direction.
  • the camera module 1 includes a housing 10, a substrate portion 20, a cover portion 30, a cap portion 40 (see FIG. 8 and the like), a mirror accommodating portion 50, and a mirror holding portion.
  • a unit 60, a power feeding path unit 70 (see FIG. 14 and the like), a drive control unit 100, a lens drive unit 110, and an image pickup unit 120 are provided.
  • the drive control unit 100 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like.
  • the CPU reads a program according to the processing content from the ROM, expands it into the RAM, and cooperates with the expanded program to centrally control the first drive unit and the second drive unit, which will be described later.
  • the drive control unit 100 drives the mirror accommodating unit 50 housed in the housing 10 and the mirror holding unit 60 held in the mirror accommodating unit 50.
  • the mirror accommodating portion 50 can be rotationally driven around the Y direction, and the mirror holding portion 60 can be rotationally driven around the X direction. Therefore, the mirror element unit 61 held by the mirror holding unit 60 has a rotation axis extending in the X direction and the Y direction, and rotates about the rotation axis under the control of the drive control unit 100.
  • the camera module 1 has a shake correction function (OIS (Optical Image Stabilization) function) that optically corrects shake (vibration) that occurs during shooting to reduce image distortion.
  • OIS Optical Image Stabilization
  • the incident light L1 along the Z direction (first direction) is incident on the housing 10.
  • the incident light L1 is bent so as to proceed to the + side (one side) in the Y direction (second direction) by the mirror element portion 61 in the housing 10.
  • a lens driving unit 110 is provided on the + side of the housing 10 in the Y direction, and the reflected light L2 bent by the mirror element unit 61 is incident on the lens driving unit 110.
  • the housing 10, the substrate portion 20, the cover portion 30, the cap portion 40, the mirror accommodating portion 50, the mirror holding portion 60, and the feeding path portion 70 correspond to the "optical element driving device" of the present invention.
  • the housing 10, the substrate portion 20, the cover portion 30, the cap portion 40, the mirror accommodating portion 50, the mirror holding portion 60, and the feeding path portion 70 will be described later.
  • the lens drive unit 110 includes, for example, a first fixed lens 111, a first movable lens 112, a second movable lens 113, a second fixed lens 114, and a lens drive control unit 115.
  • the first fixed lens 111, the first movable lens 112, the second movable lens 113, and the second fixed lens 114 are arranged side by side in order from the minus side (minus side) in the Y direction. ..
  • the reflected light L2 is output to the image pickup unit 120 via the first fixed lens 111, the first movable lens 112, the second movable lens 113, and the second fixed lens 114.
  • the lens drive control unit 115 includes a CPU, ROM, RAM, etc., and controls the movement of the first movable lens 112 and the second movable lens 113.
  • the first movable lens 112 and the second movable lens 113 independently move in the Y direction under the control of the lens drive control unit 115.
  • the camera module 1 performs stepless optical zoom and autofocus.
  • the image pickup unit 120 is arranged on the outer surface on the + side of the lens drive unit 110 in the Y direction, and is via the first fixed lens 111, the first movable lens 112, the second movable lens 113, and the second fixed lens 114. It is configured so that the reflected light L2 is incident.
  • the image pickup unit 120 includes an image pickup device, an image pickup substrate, and the like (not shown).
  • the image sensor is composed of, for example, a CCD (Charge Coupled Device) type image sensor, a CMOS (Complementary Metal Oxide Semiconductor) type image sensor, or the like.
  • the image pickup device is mounted on the image pickup board and is electrically connected to the wiring on the board via the bonding wire.
  • the image sensor captures a subject image formed by the first fixed lens 111, the first movable lens 112, the second movable lens 113, and the second fixed lens 114, and outputs an electric signal corresponding to the subject image.
  • a printed wiring board (not shown) is electrically connected to the image pickup board of the image pickup unit 120, and power is supplied to the image pickup element via the printed wiring board and the electric signal of the subject image captured by the image pickup element is transmitted. Output is done. The electric signal is output to the image pickup control unit 200 provided in the camera-mounted device.
  • the image pickup control unit 200 includes a CPU, ROM, RAM, and the like, and processes the image information obtained by the camera module 1.
  • the image pickup control unit 200 may be mounted on the camera mounting device, but may be mounted on the camera module 1.
  • the housing 10, the board portion 20, the cover portion 30, the cap portion 40 (see FIG. 8 and the like), the mirror accommodating portion 50, the mirror holding portion 60 and the feeding path portion 70 (see FIG. 14 and the like) will be described. ..
  • the housing 10, the substrate portion 20, the cover portion 30, the cap portion 40, the mirror accommodating portion 50, the mirror holding portion 60, and the feeding path portion 70 correspond to the "optical element driving device" of the present invention.
  • the housing 10 accommodates a cover portion 30, a cap portion 40, a mirror accommodating portion 50, a mirror holding portion 60, and a feeding path portion 70, and has, for example, a rectangular parallelepiped shape as a whole.
  • the housing 10 has an incident wall 11, an emitted wall 12, a pair of side walls 13, and a bottom wall 14.
  • the incident wall 11 is a wall on the + side in the Z direction of the housing 10, and is located on the side where the incident light L1 is incident.
  • the incident wall 11 is provided with an opening 11A for allowing the incident light L1 to enter the inside of the housing 10.
  • the opening 11A is located at a position corresponding to the mirror element portion 61 housed in the housing 10.
  • the length of the opening 11A in the Y direction corresponds to the moving range of the mirror in the Y direction (see FIGS. 28, 29, etc.).
  • the mirror element unit 61 moves appropriately under the control of the drive control unit 100, so that the incident light L1 is incident through the aperture 11A.
  • the incident light L1 is bent by the mirror element unit 61 within the range of the opening 12A described later.
  • the emission wall 12 is a side wall on the + side in the Y direction of the housing 10, and is located on the side where the incident light L1 is emitted from the reflected light L2 reflected from the mirror element portion 61.
  • the emission wall 12 is provided with an opening 12A for outputting the reflected light L2 to the outside of the housing 10.
  • the opening 12A is formed in a substantially circular shape extending in the X direction.
  • An arcuate guide groove 12B along the opening 12A is provided on the Y-side surface of the emission wall 12 so as to extend around the rotation axis of the mirror accommodating portion 50 (see FIG. 14). ..
  • the arc-shaped guide groove portion 12B is configured in an arc shape that is convex on the + side in the Z direction, and has a groove shape that tapers toward the bottom (+ side in the Y direction).
  • the emission wall 12 has an arcuate guide groove portion 12B to support the mirror accommodating portion 50 so that the rotation axis is along the Y direction.
  • the pair of side walls 13 are side walls on both sides of the housing 10 in the X direction, and are integrally formed with the incident wall 11 and the exit wall 12. As shown in FIG. 5, an engaged portion 13A to which the cover portion 30 engages is provided on the end face on the ⁇ side in the Z direction of the pair of side walls 13.
  • the bottom wall 14 is the wall on the negative side in the Z direction of the housing 10. That is, the bottom wall 14 is arranged on the side opposite to the incident side of the incident light L1 with respect to the mirror accommodating portion 50 in the Z direction.
  • the bottom wall 14 is detachably provided with respect to the end faces on the ⁇ side in the Z direction of the pair of side walls 13.
  • the bottom wall 14 is provided with a board portion 20 to which electric power is supplied from a power source in the camera mounting device.
  • the board portion 20 is arranged along the Y direction apart from the mirror accommodating portion 50, and has a plurality of input / output terminals 21.
  • the board portion 20 is configured to be able to input an electric signal from the outside of the housing 10 or output an electric signal from the inside of the housing 10.
  • the input / output terminal 21A on the + side in the Y direction of the board unit 20 is connected to the terminal 12C capable of supplying power to and from the mirror accommodating unit 50.
  • the terminal 12C is inserted into the emission wall 12, and is provided at a position where the board portion 20 comes into contact with the input / output terminal 21A of the board portion 20 when the board portion 20 is mounted on the pair of side walls 13.
  • the terminal 12C is connected to the mirror accommodating portion 50 via the feeding path portion 70 (see FIG. 31).
  • the input / output terminals 21A of the substrate portion 20 are provided on the positive electrode side and the negative electrode side, respectively, three by three.
  • the input / output terminal 21A on the positive electrode side is arranged on the-side in the X direction at the end on the + side in the Y direction of the substrate portion 20, and the input / output terminal 21A on the negative electrode side is located on the + side in the Y direction of the substrate portion 20. It is arranged on the + side in the X direction at the end of the side.
  • the substrate portion 20 is provided with a resonance portion 22 constituting a first drive portion for rotationally driving the mirror accommodating portion 50 around a rotation shaft (first rotation shaft) along the Y direction. Further, as shown in FIG. 6, on the negative side of the mirror accommodating portion 50 in the Z direction, a contact that applies a preload to the mirror accommodating portion 50 to rotationally drive the mirror accommodating portion 50 by contacting with the vibrating resonance portion 22. A portion 50A is provided.
  • the resonance portion 22 and the contact portion 50A constitute an ultrasonic motor that serves as a first drive portion for rotationally driving the mirror accommodating portion 50 around the Y direction.
  • the first drive unit may be something other than an ultrasonic motor, such as a VCM (Voice Coil Motor).
  • a magnet portion 50B is provided on the-side of the mirror accommodating portion 50 in the Z direction.
  • the magnet portion 50B has a structure in which an N-pole magnet and an S-pole magnet are adjacent to each other in the X direction.
  • a position detection unit 23 is provided at a position corresponding to the magnet unit 50B of the substrate unit 20.
  • the position detection unit 23 is, for example, a magnetoresistive effect element or the like capable of detecting a magnetic force, and detects the magnetic force of the magnet unit 50B.
  • the magnetic force of the magnet portion 50B detected by the position detecting unit 23 varies depending on the position of the mirror accommodating unit 50. That is, the position detecting unit 23 detects the position of the mirror accommodating unit 50 related to the rotational drive around the Y direction by detecting the change in the magnetic force of the magnet unit 50B according to the position of the mirror accommodating unit 50.
  • the cover portion 30 is the Y-side wall of the housing 10, and the end of the incident wall 11 and the pair of side walls 13 on the-Y direction. It is configured to be removable.
  • the cover portion 30 has a main body wall portion 31, a resin portion 32, and an urging portion 33.
  • the main body wall portion 31 constitutes the wall surface portion of the cover portion 30, and is configured in a rectangular shape capable of covering the opening portion formed by the incident wall 11 and the pair of side walls 13.
  • the resin portion 32 is configured in a rectangular frame shape, and is fitted into, for example, a rectangular convex portion 31A protruding from the + side surface of the main body wall portion 31 in the Y direction. It is fixed to the main body wall portion 31.
  • the resin portion 32 has a protruding portion 32A and an engaging portion 32B.
  • the protruding portions 32A are provided at both ends in the X direction on the + side side of the resin portion 32 in the Z direction.
  • the protrusion 32A is provided at a position corresponding to the recess 13B provided in the side wall 13 described above, and fits with the recess 13B.
  • the engaging portion 32B and the resin portion 32 are provided at both ends in the X direction on the-side side in the Z direction.
  • the engaging portion 32B is located at a position corresponding to the engaged portion 13A provided at the end on the ⁇ side in the Z direction of the above-mentioned side wall 13, and engages with the engaged portion 13A.
  • the protruding portion 32A fits into the recess 13B, and the engaging portion 32B engages with the engaged portion 13A, so that the cover portion 30 is attached to the housing 10.
  • the urging portion 33 is an urging member such as a leaf spring, and by urging the cap portion 40 toward the mirror accommodating portion 50, the mirror accommodating portion 50 is urged to the + side in the Y direction.
  • the urging portion 33 is fixed to, for example, the main body wall portion 31. As shown in FIG. 10, the urging portion 33 has an annular portion 331, an arm portion 332, and a connecting portion 333.
  • the annular portion 331 is located at the center of the urging portion 33 in the X direction, and is configured in an annular shape.
  • the annular portion 331 is a portion that comes into contact with the cap portion 40 and has an outer shape substantially equivalent to that of the cap portion 40.
  • the annular portion 331 is located at a position corresponding to the cap portion 40 when the cover portion 30 is attached to the housing 10.
  • the arm portion 332 is a portion extending in the X direction from each of both ends of the annular portion 331 in the X direction, and two arm portions 331 are provided at each of both ends of the annular portion 331 in the X direction.
  • the two arm portions 332 on one side (+ side or-side) in the X direction are connected by a connecting portion 333 at an end portion in the X direction opposite to the annular portion 331.
  • each arm portion 332 sandwiching the annular portion 331 in the X direction has a shape symmetrical with respect to the annular portion 331 in the X direction. This makes it possible to equalize the urging forces from the arm portions 332 on both sides in the X direction in the X direction.
  • the two arm portions 332 on one side (+ side or-side) in the X direction have a shape symmetrical with respect to the annular portion 331 in the Z direction. This makes it possible to equalize the urging forces from the two arm portions 332 in the Z direction.
  • the cap portion 40 is a portion that covers the first sliding groove portion 512A at the end on the ⁇ side in the Y direction of the mirror accommodating portion 50, and is a portion that covers the mirror accommodating portion 50 and the cover portion 30 (the urging portion). It is placed between 33) and.
  • the cap portion 40 is located at a position corresponding to the annular portion 331 of the urging portion 33, and is configured in a circular shape similar to the outer shape of the annular portion 331 of the urging portion 33.
  • annular guide groove portion 41 As shown in FIG. 12, on the + side of the cap portion 40 in the Y direction, that is, on the side facing the mirror accommodating portion 50, an annular guide groove portion 41 provided so as to extend around the rotation axis of the mirror accommodating portion 50 is formed. Has been done.
  • the annular guide groove portion 41 has a groove shape that tapers toward the bottom (-side in the Y direction).
  • the cap portion 40 has the annular guide groove portion 41 to support the mirror accommodating portion 50 so that the rotation axis is along the Y direction.
  • the cap portion 40 presses the annular portion 331 of the urging portion 33 toward the ⁇ side in the Y direction.
  • the arm portion 332 generates an urging force (see the arrow) that causes the urging portion 33 to return to its original shape, and the urging portion 33 urges the cap portion 40 toward the mirror accommodating portion 50.
  • the urging unit 33 urges the mirror accommodating unit 50 toward the + side in the Y direction.
  • the mirror accommodating portion 50 is configured so that at least the outer shape on the-side in the Z direction is an arc shape that is convex on the-side in the Z direction. As a result, the mirror accommodating portion 50 has a shape that makes it easy to rotate about a rotation axis along the Y direction. Further, the mirror accommodating portion 50 is configured to be detachably attached to and detachable from the housing 10 from an opening portion formed by the incident wall 11 of the housing 10 from which the cover portion 30 is removed and the pair of side walls 13.
  • the second sliding groove portion 513B is configured in an arc shape that is convex on the + side in the Z direction, similarly to the arc-shaped guide groove portion 12B of the emission wall 12 described above (see FIG. 14).
  • the second sliding groove portion 513B is provided at a position facing the arcuate guide groove portion 12B in the Y direction.
  • the second sliding groove portion 513B has a groove shape that tapers toward the bottom (-side in the Y direction).
  • the yoke portion 515 extends parallel to the guide surface of the mirror holding portion 60 in the mirror guide portion 511 (rotation guide groove portion 511A which is a surface on the + side in the Z direction) in the X direction, and the guide surface and Y It has a first surface 515A that is concentric in the direction.
  • first sliding groove portion 512A and the annular guide groove portion 41 are configured to extend in an annular shape, a plurality of first sliding portions 54 can be accommodated at once. Therefore, it is easier to arrange each first sliding portion 54 in the groove portion as compared with a configuration in which the position of the first sliding portion is defined in the groove portion, and each first sliding portion is easily arranged by the first spacing holding portion 55. The spacing between the portions 54 can be easily adjusted.
  • the predetermined interval is an angle that can be set according to the shape of the arc in the arc-shaped guide groove portion 12B and the second sliding groove portion 513B, and is at least an angle of less than 120 degrees.
  • the temperature is about 90 degrees (see FIG. 23).
  • the distance between the second sliding portions 56 has to be made relatively small.
  • the distance between the three second sliding portions 56 can be set to 120 degrees, and it is easy to balance the arrangement of each second sliding portion 56. It is possible to stabilize the rotation of 50.
  • the second gap holding portion 57 follows the movement of the second sliding portion 56, the distance between the second sliding portions 56 is maintained and the mirror accommodating portion 50 is rotated according to the rotation position. , Each of the second sliding portions 56 can freely move to a position where it is easy to balance each other. As a result, the rotation of the mirror accommodating portion 50 can be stabilized.
  • the mirror holding portion 60 is a portion that holds the mirror element portion 61, and is detachably housed in the mirror accommodating portion 50.
  • the mirror holding portion 60 is arranged in the mirror guide portion 511 within the mirror accommodating portion 50, and is configured to be slidable on the mirror guide portion 511.
  • the mirror holding portion 60 corresponds to the "movable portion" of the present invention.
  • the holding housing 62 is a portion that holds the mirror element portion 61 and slides the mirror guide portion 511, and has a main body portion 621 and a magnet holding portion 622.
  • the third sliding groove portion 621B is provided at both ends of the main body portion 621 in the X direction, and is provided at a position facing the rotation guide groove portion 511A in the Z direction (see FIG. 27).
  • the third sliding groove portion 621B has a groove shape that tapers toward the bottom (+ side in the Z direction).
  • the resonance portion 511B and the holding contact portion 64 are rotationally driven around the X direction of the mirror holding portion 60, that is, a driving unit (second driving unit) that drives the mirror holding portion 60 to move on the mirror guide portion 511. ) Consists of an ultrasonic motor.
  • the second drive unit may be something other than an ultrasonic motor, such as a VCM.
  • the end portion on the + side in the Z direction faces the above-mentioned regulation cover portion 52. Moreover, it moves to a position where it does not come into contact with the first regulation wall 521A (see the broken line). Due to the presence of the first regulation wall 521A, even when the main body portion 621 moves excessively or when an external force for moving the main body portion 621 is applied to the + side in the Z direction, the main body portion 621 moves to the + side in the Z direction. Can regulate the movement of.
  • the magnet holding portion 622 is arranged at a position facing the second regulating wall 522A of the above-mentioned regulation cover portion 52 in the Z direction.
  • the amount of protrusion of the magnet holding portion 622 to the + side in the Z direction is such that it does not come into contact with the second regulation wall 522A. Due to the presence of the second regulation wall 522A, even if an external force for moving the main body portion 621 to the + side in the Z direction is applied, the movement of the main body portion 621 to the + side in the Z direction can be restricted.
  • the magnet holding portion 622 faces the restricting portion 514A in the above-mentioned side wall 514 in the Y direction, and when the mirror holding portion 60 is most rotated to the + side in the Y direction, the Y direction is reached.
  • the + side end of the magnet moves to a position where it does not come into contact with the restricting portion 514A (see the broken line). Due to the presence of the restricting portion 514A, the mirror holding portion 60 moves to the + side in the Y direction even when the mirror holding portion 60 moves excessively or when an external force for moving the mirror holding portion 60 to the + side in the Y direction is applied. Can be regulated.
  • the magnet holding portion 622 is provided with a magnet portion 623.
  • the magnet portion 623 has a first pole 623A and a second pole 623B arranged adjacent to each other in the Y direction.
  • the first pole 623A is an S pole magnet
  • the second pole 623B is an N pole magnet.
  • the magnet portion 623 and the yoke portion 515 are magnetically attracted to each other. That is, the magnet portion 623 and the yoke portion 515 generate a pressurization that magnetically attracts the mirror holding portion 60 to the accommodation housing 51 side.
  • the magnet portion 623 and the yoke portion 515 correspond to the "pressurized portion" of the present invention.
  • the mirror holding portion 60 is in a state of being attracted to the accommodating housing 51 even when it is rotationally driven or when an external force is applied, so that the mirror element unit 61 is reliably held in the housing 10. can do.
  • the moving mechanism of the mirror holding portion 60 has to be simplified, so that the holding portion of the mirror holding portion 60 (mirror element portion 61) becomes fragile. It is easy, and by extension, the mirror holding portion 60 is easy to come off from the accommodating housing 51.
  • the magnet portion 623 and the yoke portion 515 are magnetically attracted to each other, so that the mirror holding portion 60 can be reliably held in the housing 10. That is, in the present embodiment, even if the holding portion of the mirror holding portion 60 is fragile, the mirror holding portion 60 can be reliably held in the accommodating housing 51. As a result, in the present embodiment, the housing 10 can be easily simplified and lowered in height.
  • the present embodiment it is possible to have a simple configuration without providing a component such as an urging member that constantly urges the mirror, and the mirror holding portion 60 is surely housed in the accommodating housing 51. Can be retained.
  • first surface 515A of the yoke portion 515 and the second surface 623C of the magnet portion 623 have the same curvature as the rotation guide groove portion 511A, the movement of the magnet portion 623 on the yoke portion 515 can be further smoothed. can.
  • the magnet holding portion 622 is arranged along the pair of side walls 514 of the accommodating housing 51.
  • the above-mentioned position detection hole 514C is formed on the side wall 514 on the + side in the X direction, and the above-mentioned position detection unit 532A is provided at a position corresponding to the position detection hole 514C.
  • the position detecting unit 532A is arranged at a position where the magnetic force of the magnet unit 623 can be detected, and the magnetic position of the magnet unit 623 of the magnet holding unit 622 based on the movement of the mirror holding unit 60. Detects changes in. That is, the position detection unit 532A detects the position of the mirror holding unit 60.
  • the position of the mirror holding portion 60 can be controlled with high accuracy.
  • the magnet portion 623 for attracting the mirror holding portion 60 and the accommodation housing 51 can be used as a magnet for position detection. As a result, since it is not necessary to separately provide a magnet for position detection, the number of parts can be reduced and the configuration can be further simplified.
  • the power supply path unit 70 is used, for example, for power supply between the resonance unit 511B and the position detection unit 532A in the mirror accommodating unit 50, and is provided with three on the positive electrode side and three on the negative electrode side, for a total of six.
  • the three feeding path portions 70 on the positive electrode side are arranged on the negative side in the X direction with respect to the mirror accommodating portion 50, for example, and the three feeding path portions 70 on the negative electrode side are X with respect to, for example, the mirror accommodating portion 50. It is placed on the + side of the direction. That is, the feeding path portions 70 are provided on both ends of the mirror accommodating portion 50 in the X direction orthogonal to each of the Z direction and the Y direction.
  • the power feeding path portion 70 is formed from the + side end portion in the Y direction in which the terminal 12C connected to the input / output terminal 21A of the above-mentioned board portion 20 is located in the housing 10.
  • the first power supply terminal 531A of the accommodation side board portion 53 and the path holding portion 512B of the mirror accommodation portion 50 extend to the end on the ⁇ side in the Y direction. That is, the power feeding path portion 70 extends over both ends of the mirror accommodating portion 50 in the Y direction, and the terminal 12C (terminal on the substrate portion 20 side) arranged apart in the Y direction and the first feeding terminal 531A ( It extends so as to connect with the terminal on the mirror accommodating portion 50 side).
  • the power supply path portion 70 is configured to partially include a spring portion. Specifically, the power feeding path portion 70 is composed of a first wire portion 71A, a first spring portion 72A, a second wire portion 71B, a second spring portion 72B, and a third wire portion 71C. ..
  • the three power feeding path portions 70 on one side (+ side or-side) in the X direction are arranged side by side in the Z direction so as not to interfere with each other.
  • the spring portions 72A and 72B of the two feeding path portions 70 adjacent to each other in the Z direction are arranged so that the positions in the Y direction are different from each other.
  • the first wire portion 71A is connected to the terminal 12C of the substrate portion 20, and the path holding portion 512B of the mirror accommodating portion 50 is connected to the first wire portion 71A.
  • the wire portion 71C is connected.
  • the third wire section 71C is connected to the terminal 12C of the board section 20, and the first wire section 71A is connected to the path holding section 512B of the mirror accommodating section 50. ..
  • a position fixing portion 74 is provided at the center portion in the Y direction of the three power supply path portions 70 on one side in the X direction.
  • the position fixing portion 74 is for maintaining the positional relationship between the three feeding path portions 70 within a certain range.
  • the position fixing portion 74 is configured in a plate shape, and the portions of the second wire portions 71B are configured to be engageable with each other.
  • a damper member 75 is provided at an engaging portion with the position fixing portion 74.
  • the engaging portion with the position fixing portion 74 is in a free state. Specifically, the position fixing portion 74 is cut out from the portion 74A corresponding to the feeding path portion 70 in the middle in the Z direction, and the feeding path portion 70 in the middle in the Z direction is passed through the portion 74A. There is.
  • the first power feeding terminal 531A is located on the + side in the Z direction with respect to the position before the movement (see FIG. 33) after the mirror accommodating portion 50 is moved. Therefore, after the mirror accommodating portion 50 is moved (see FIG. 34), the spring portions 72A and 72B are in a state of being extended longer than the state before the movement (see FIG. 33).
  • the leaf spring when the board portion and the mirror accommodating portion are connected by using a leaf spring as a feeding path portion, the leaf spring has a relatively strong reaction force, and the reaction force hinders the rotation of the mirror accommodating portion. It's easy to do.
  • the feeding path portion 70 extends in the Y direction and the spring portions 72A and 72B are composed of coil springs, the spring portion 72A follows the rotation of the mirror accommodating portion 50. , 72B can be configured to easily expand and contract.
  • the spring portions 72A and 72B have relatively low reaction forces, it is possible to absorb the displacement of the positional relationship between the substrate portion 20 and the mirror accommodating portion 50 before and after the movement due to the rotation of the mirror accommodating portion 50. can. As a result, the rotation of the mirror accommodating portion 50 can be made smooth while supplying power to the accommodating side substrate portion 53 of the mirror accommodating portion 50.
  • the spring portions 72A and 72B are in the positions where they are extended long.
  • the two adjacent feeding path portions 70 tend to approach each other, so that the spring portions tend to interfere with each other.
  • the positions of the spring portions 72A and 72B of the two power supply path portions 70 adjacent to each other in the Z direction are different from each other in the Y direction, so that the spring portions 72A are different from each other.
  • the spring portions of the two adjacent feeding path portions 70 do not interfere with each other.
  • the power supply by the two power supply path units 70 can be made accurate. It is also possible to provide the spring portion in the entire feeding path portion 70 by reducing the winding diameter of the spring portion of the feeding path portion 70.
  • the distance between the spring parts of two adjacent power supply paths can be widened without changing the distance between the spring parts, as compared with the configuration in which the winding diameter is not reduced. It is possible to further weaken the reaction force as compared with the configuration having a partially spring portion while suppressing the interference of the above.
  • each power feeding path 70 can be arranged as close as possible, the space for arranging the feeding path 70 can be reduced, and the mirror accommodating portion 50 can be miniaturized and reduced in height.
  • the position fixing portion 74 by providing the position fixing portion 74, the positional relationship between the three feeding path portions 70 in the Z direction can be maintained within a certain range, so that the interference of the three feeding path portions 70 is further suppressed. be able to.
  • the deformation of the spring portion when the mirror accommodating portion 50 rotates is different. It is different from the two power supply path units 70. Therefore, similarly to the other two feeding path portions 70, if the feeding path section 70 is fixed to the position fixing section 74, the movement of the feeding path section 70 due to the rotation of the mirror accommodating section 50 is affected.
  • the urging portion 33 has a symmetrical shape in the Z direction such that the arm portion 332 on the + side in the Z direction and the arm portion 332 on the-side in the Z direction have the same shape (FIG. 10), but the present invention is not limited to this, and it does not have to be configured to have a symmetrical shape in the Z direction.
  • the arm portion 332A on the + side in the Z direction and the arm portion 332B on the-side in the Z direction in the urging portion 33 may have different shapes.
  • the arm portion 332A on the + side in the Z direction has a straight portion A1 and a curved portion A2.
  • the straight line portion A1 extends from the end portion on the + side of the annular portion 331 in the Z direction toward the end portion side of the urging portion 33 in the X direction.
  • the end of the straight line portion A1 extends to the vicinity of the connecting portion of the two arm portions 332A and 332B.
  • the curved portion A2 is curved from the end portion of the straight portion A1 opposite to the annular portion 331 to the negative side in the Z direction toward the annular portion 331 in the X direction, and then the annular portion 331 in the X direction. It is curved to the opposite side and connected to the connection portion 333.
  • the arm portion 332B on the-side in the Z direction is curved toward the + side in the Z direction from the portion on the + side in the Z direction at the end of the annular portion 331 in the X direction, and then curved toward the + side in the Z direction. Then, it is connected to the connection unit 333.
  • the urging portion 33 has the urging force of the portion on the + side in the Z direction with respect to the rotation center C1 of the mirror accommodating portion 50 on the-side in the Z direction with respect to the rotation center C1. It becomes larger than the urging force of the part.
  • the urging portion 33 shown in FIG. 35 the urging force on the + side in the Z direction is increased from the rotation center C1, so that the cap portion 40 is more stable and easily receives the load in the Y direction. As a result, the rotation of the mirror accommodating portion 50 can be stabilized.
  • the hole 55A of the first spacing holding portion 55 has a size capable of arranging the three first sliding portions 54, but the present invention is not limited to this, and the present invention is not limited to this, for example, FIG. As shown in 36, the size may be such that only one first sliding portion 54 can be arranged.
  • the hole 55B of the first spacing holding portion 55 has a diameter substantially equal to that of one first sliding portion 54, and has a diameter such that one first sliding portion 54 can rotate in the hole 55B. ..
  • the spacing between the first sliding portions 54 can be maintained at equal intervals.
  • the first interval holding portion 55 is fixed to the mirror accommodating portion 50, but the present invention is not limited to this, and is not fixed to the mirror accommodating portion 50 and the cap portion 40. It may be arranged in.
  • the first interval holding portion 55 can easily follow the movement of the first sliding portion 54.
  • the second space holding portion 57 is arranged in a non-fixed state with respect to the mirror accommodating portion 50 and the exit wall 12, but the present invention is not limited to this, and for example, FIG. 37 shows. As shown, it may be fixed to the mirror accommodating portion 50.
  • the second interval holding portion 57 has an arc portion 571 and an overhanging portion 572.
  • the arc portion 571 is configured in an arc shape that is convex on the + side in the Z direction, and is provided at a position corresponding to the second sliding groove portion 513B of the second sliding wall 513.
  • the arc portion 571 is provided with a hole 57A in which the second sliding portion 56 is arranged.
  • the overhanging portion 572 is provided so as to overhang from the arc portion 571 toward both ends in the X direction.
  • the overhanging portion 572 is provided with an engaging hole 57B.
  • a protruding portion 513C projecting to the + side in the Y direction is provided at a position corresponding to the engaging hole 57B at both ends of the second sliding wall 513 in the X direction.
  • the second spacing holding portion 57 is fixed to the mirror accommodating portion 50 by engaging the engaging hole 57B with the protruding portion 513C.
  • the spacing between the holes 57A may be set to the maximum spacing.
  • the maximum interval is appropriately set according to the second sliding groove portion 513B.
  • the position of the second sliding portion 56 is fixed along with the fixing of the second spacing holding portion 57, but the present invention is not limited to this, and the second The structure may allow the sliding portion 56 to move.
  • the hole 57C provided in the second spacing holding portion 57 (arc portion 571) is formed in a size such that about three second sliding portions 56 can be inserted.
  • three holes 57A in which the second sliding portion 56 of the second spacing holding portion 57 is arranged are provided, but the present invention is not limited to this, and three or more holes are provided. You may be.
  • the second interval holding portion 57 is provided with five holes 57A.
  • the distance between two holes 57A adjacent to each other in the rotation direction is equal.
  • the hole 57A into which the second sliding portion 56 is inserted can be appropriately adjusted, and three or more second sliding portions 56 (for example, 5 in accordance with the hole 57A) can be appropriately adjusted. It is also possible to place one).
  • the first interval holding portion and the second interval holding portion are configured to have holes, but the present invention is not limited to this, and the present invention is configured to have a notch in which the sliding portion can be arranged. It may be.
  • each groove has a shape that tapers toward it, but the present invention is not limited to this, and it is not necessary to have the shape.
  • each sliding portion is configured to be spherical, but the present invention is not limited to this, and as long as it is slidable between the movable portion and the facing portion thereof, how is it? It may have a different shape.
  • the yoke portion 515 is arranged on the mirror accommodating portion 50 side and the magnet portion 623 is arranged on the mirror holding portion 60 side, but the present invention is not limited to this.
  • the magnet portion may be arranged in the mirror accommodating portion type, and the yoke portion may be arranged on the mirror holding portion side.
  • the shape of the facing surface between the yoke portion 515 and the magnet portion 623 is matched with the shape of the guide surface in the mirror guide portion 511, but the present invention is not limited to this.
  • the shape of the facing surface between the yoke portion and the magnet portion may be any shape as long as the guide of the mirror holding portion in the mirror guide portion is not obstructed.
  • the magnet portion that generates the pressurization that attracts the mirror accommodating portion and the mirror holding portion also serves as a magnet for position detection, but the present invention is not limited to this and is for position detection.
  • a magnet portion may be provided separately.
  • the third sliding portion is interposed between the mirror guide portion and the mirror holding portion, but the present invention is not limited to this, and the mirror guide portion can guide the mirror holding portion. As long as it is, the third sliding portion does not have to intervene.
  • the mirror guide portion and the mirror holding portion are magnetically attracted to each other, but the present invention is not limited to this, and the mirror guide portion and the mirror holding portion are held by using, for example, an urging member or the like. Pressurization that is attracted to the part may be generated.
  • the mirror holding portion 60 is arranged in a state where the housing housing 51 does not have a fixed point, but the present invention is not limited to this, and the mirror holding portion 60 is the housing housing 51. It may have a fixed point inside.
  • the feeding path portion 70 extends over both ends of the mirror accommodating portion 50 in the Y direction, but the present invention is not limited to this, and as long as it extends in the Y direction, it extends over both ends. It doesn't have to be.
  • three power feeding path portions 70 are provided on the positive electrode side and three on the negative electrode side, but the present invention is not limited to this, and the feeding path section is limited to the number of parts to be fed. The number of 70 may be changed as appropriate.
  • the position fixing portion 74 holds only the middle feeding path portion 70 in a free state, but the present invention is not limited to this, and only the middle feeding path portion 70 is fixed. May be.
  • the power feeding path portion 70 extends in the direction along the Y direction, but the present invention is not limited to this, and the mirror accommodating portion rotates about the rotation axis along the Y direction, and As long as the feeding path portion includes the coil spring, it does not have to extend in the direction along the Y direction.
  • the drive control unit, the lens drive control unit, and the image pickup control unit are separately provided, but the present invention is not limited to this, and the drive control unit, the lens drive control unit, and the image pickup control unit are provided. At least two of them may be composed of one control unit.
  • a smartphone which is a mobile terminal with a camera
  • a camera-mounted device including the camera module 1 has been described as an example of a camera-mounted device including the camera module 1.
  • the present invention has described the images obtained by the camera module and the camera module. It can be applied to a camera-mounted device having an image processing unit for processing information.
  • Camera-mounted devices include information equipment and transportation equipment.
  • the information device includes, for example, a mobile phone with a camera, a notebook computer, a tablet terminal, a portable game machine, a web camera, a drone, and an in-vehicle device with a camera (for example, a back monitor device and a drive recorder device).
  • Transportation equipment also includes, for example, automobiles and drones.
  • FIGS. 40A and 40B are diagrams showing an automobile V as a camera-mounted device on which an in-vehicle camera module VC (Vehicle Camera) is mounted.
  • 40A is a front view of the automobile V
  • FIG. 40B is a rear perspective view of the automobile V.
  • the automobile V is equipped with the camera module 1 described in the embodiment as the in-vehicle camera module VC.
  • the vehicle-mounted camera module VC may be attached to the windshield toward the front or attached to the rear gate toward the rear, for example.
  • This in-vehicle camera module VC is used for a back monitor, a drive recorder, a collision avoidance control, an automatic driving control, and the like.
  • the above embodiments are merely examples of embodiment of the present invention, and the technical scope of the present invention should not be construed in a limited manner by these. That is, the present invention can be implemented in various forms without departing from its gist or its main features. For example, the shape, size, number, and material of each part described in the above embodiment are merely examples, and can be changed as appropriate.
  • the optical element driving device is useful as an optical element driving device, a camera module, and a camera-mounted device capable of reliably holding an optical element.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Devices (AREA)
  • Camera Bodies And Camera Details Or Accessories (AREA)
  • Adjustment Of Camera Lenses (AREA)

Abstract

Le présent dispositif d'entraînement d'élément optique comprend : une partie mobile qui peut maintenir un élément optique servant à courber la lumière incidente ; une partie de guidage servant à guider le mouvement de la partie mobile ; une partie d'entraînement servant à entraîner la partie mobile de façon à ce qu'elle se déplace sur la partie de guidage ; un corps de roulement disposé entre la partie mobile et la partie de guidage ; et une partie de génération de précharge servant à générer une précharge pour attirer la partie mobile vers le côté où se trouve la partie de guidage par l'intermédiaire du corps de roulement.
PCT/JP2021/042783 2020-12-24 2021-11-22 Dispositif d'entraînement d'élément optique, module de caméra et dispositif équipé d'une caméra WO2022137938A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020214973A JP2022100779A (ja) 2020-12-24 2020-12-24 光学素子駆動装置、カメラモジュールおよびカメラ搭載装置
JP2020-214973 2020-12-24

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180239161A1 (en) * 2017-02-20 2018-08-23 Jahwa Electronics Co., Ltd. Apparatus for driving optical-reflector for ois with multi-axial structure
US20190243156A1 (en) * 2018-02-08 2019-08-08 Jahwa Electronics Co., Ltd. Apparatus for driving optical system with memory unit
JP2019139223A (ja) * 2018-01-25 2019-08-22 台湾東電化股▲ふん▼有限公司 光学システム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180239161A1 (en) * 2017-02-20 2018-08-23 Jahwa Electronics Co., Ltd. Apparatus for driving optical-reflector for ois with multi-axial structure
JP2019139223A (ja) * 2018-01-25 2019-08-22 台湾東電化股▲ふん▼有限公司 光学システム
US20190243156A1 (en) * 2018-02-08 2019-08-08 Jahwa Electronics Co., Ltd. Apparatus for driving optical system with memory unit

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