WO2022196440A1 - Dispositif d'entraînement d'élément optique - Google Patents

Dispositif d'entraînement d'élément optique Download PDF

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Publication number
WO2022196440A1
WO2022196440A1 PCT/JP2022/009989 JP2022009989W WO2022196440A1 WO 2022196440 A1 WO2022196440 A1 WO 2022196440A1 JP 2022009989 W JP2022009989 W JP 2022009989W WO 2022196440 A1 WO2022196440 A1 WO 2022196440A1
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WO
WIPO (PCT)
Prior art keywords
optical element
holding member
element holding
driving device
fixed
Prior art date
Application number
PCT/JP2022/009989
Other languages
English (en)
Japanese (ja)
Inventor
潤 安藤
清行 伊藤
丈剛 村山
拓也 加藤
Original Assignee
アルプスアルパイン株式会社
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.)
Filing date
Publication date
Application filed by アルプスアルパイン株式会社 filed Critical アルプスアルパイン株式会社
Priority to CN202280016618.XA priority Critical patent/CN116940891A/zh
Priority to JP2023506995A priority patent/JP7467762B2/ja
Publication of WO2022196440A1 publication Critical patent/WO2022196440A1/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
    • 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
    • H04N23/60—Control of cameras or camera modules

Definitions

  • the present disclosure relates to an optical element driving device.
  • a lens driving device in which a movable part and a fixed part are connected by a suspension wire with four balls arranged between the movable part and the fixed part (see Patent Document 1).
  • the movable portion is arranged so as to be biased toward the fixed portion and come into contact with the fixed portion.
  • this lens driving device uses the frictional force acting between the ball and each of the fixed and movable parts when moving the movable part to which the lens is attached and converging it on the target position. Therefore, in this lens driving device, there is a possibility that the settling time, which is the time from when a command for moving the movable portion to the target position is input until the movable portion settles to the target position, becomes long. be.
  • an optical element driving device that can more quickly move an optical element such as a lens to a target position.
  • An optical element driving device comprises a stationary member including a base member, an optical element holding member disposed above the base member and capable of holding an optical element, the base member and the optical element. a support member arranged between the holding member; a biasing member that biases the optical element holding member downward; and a driving mechanism for moving along the optical element holding member, wherein the optical element holding member has a housing portion for housing a vibration damping member, and the fixed side member has a distal end portion inserted into the housing portion. and the distal end of the protrusion is in contact with the damping member provided in the housing.
  • the optical element driving device described above can move the optical element to the target position more quickly.
  • FIG. 1 is a perspective view of an optical element driving device;
  • FIG. 1 is an exploded perspective view of an optical element driving device;
  • FIG. 4 is an exploded perspective view of a lower member; It is an exploded perspective view of a movable side member.
  • FIG. 4 is a bottom perspective view of an optical element holding member to which a biasing member is attached; It is a lower perspective view of the optical element holding member to which a magnet is further attached. It is a lower perspective view of the optical element holding member to which the support member is further attached. It is an exploded perspective view of a fixed side member.
  • FIG. 3 is a perspective view of a biasing member, metal member, wire and base member; FIG.
  • FIG. 4 is a perspective view of a biasing member, metal members and wires; It is a left side view of the whole lower member. 4 is an enlarged view of a biasing member attached to the optical element holding member; FIG. It is a left side view of the whole lower member. It is a top view of an optical element drive.
  • 1 is a cross-sectional view of an optical element driving device;
  • FIG. 1 is a cross-sectional view of an optical element driving device;
  • FIG. FIG. 4 is a top view of a damping member, magnets, coils, and an insulating substrate;
  • FIG. 4 is a top view of an optical element holding member;
  • FIG. 11 is an exploded perspective view of another configuration example of the optical element driving device;
  • FIG. 11 is a perspective view of another configuration example of the base member;
  • FIG. 10 is a top view of another configuration example of the optical element holding member;
  • FIG. 11 is a top view of still another configuration example of the optical element holding member;
  • FIG. 1 is a perspective view of the optical element driving device 101.
  • FIG. FIG. 2 is an exploded perspective view of the optical element driving device 101 composed of the case 4 and the lower member LB, showing a state where the case 4 is separated from the lower member LB.
  • FIG. 3 is an exploded perspective view of the lower member LB, showing a state where the movable member MB is separated from the fixed member FB.
  • FIG. 4 is an exploded perspective view of the movable-side member MB.
  • 5A to 5C are bottom perspective views of the movable side member MB.
  • FIG. 6 is an exploded perspective view of the fixed member FB.
  • X1 represents one direction of the X-axis forming the three-dimensional orthogonal coordinate system
  • X2 represents the other direction of the X-axis
  • Y1 represents one direction of the Y-axis forming the three-dimensional orthogonal coordinate system
  • Y2 represents the other direction of the Y-axis
  • Z1 represents one direction of the Z-axis forming the three-dimensional orthogonal coordinate system
  • Z2 represents the other direction of the Z-axis.
  • the X1 side of the optical element driving device 101 corresponds to the front side (front side) of the optical element driving device 101
  • the X2 side of the optical element driving device 101 corresponds to the rear side of the optical element driving device 101. (back side).
  • the Y1 side of the optical element driving device 101 corresponds to the left side of the optical element driving device 101
  • the Y2 side of the optical element driving device 101 corresponds to the right side of the optical element driving device 101
  • the Z1 side of the optical element driving device 101 corresponds to the upper side of the optical element driving device 101 (object side)
  • the Z2 side of the optical element driving device 101 corresponds to the lower side of the optical element driving device 101 (image sensor side). corresponds to The same applies to other members in other drawings.
  • the optical element driving device 101 is a device for moving the optical element OE as shown in FIG. 2 on a virtual plane parallel to the XY plane.
  • the optical element OE is shown as having a substantially rectangular parallelepiped shape, but may have other shapes such as a cylindrical shape.
  • illustration of the optical element OE is omitted for clarity.
  • the optical element OE is a lens body, mirror, prism, optical filter, or the like.
  • the lens body is a cylindrical lens barrel with at least one lens.
  • the optical element OE is a lens body.
  • the optical element driving device 101 includes a case 4 and a lower member LB which are part of the fixed side member FB.
  • the case 4 is a cover member that covers the lower member LB.
  • the case 4 is produced by punching, drawing, and the like on a plate material formed of non-magnetic metal such as austenitic stainless steel. Since the case 4 is made of non-magnetic metal, the case 4 does not magnetically affect the drive mechanism DM and the like that use electromagnetic force.
  • the case 4 has a lidded rectangular cylindrical outer shape that defines the storage portion 4s.
  • the case 4 includes a substantially rectangular cylindrical outer wall portion 4A, and a substantially rectangular annular flat plate-shaped top plate portion provided so as to be continuous with the upper end (the end on the Z1 side) of the outer peripheral wall portion 4A. 4B and.
  • a substantially rectangular opening 4K is formed in the center of the top plate portion 4B.
  • the outer peripheral wall portion 4A includes a first side plate portion 4A1 to a fourth side plate portion 4A4.
  • the first side plate portion 4A1 and the third side plate portion 4A3 face each other, and the second side plate portion 4A2 and the fourth side plate portion 4A4 face each other.
  • the second side plate portion 4A2 and the fourth side plate portion 4A4 extend perpendicularly to the first side plate portion 4A1 and the third side plate portion 4A3. Further, as shown in FIG. 1, the case 4 is joined to the base member 18 with an adhesive to form a housing HS together with the base member 18. As shown in FIG.
  • the lower member LB as shown in FIG. 3, includes a wire 8, an insulating substrate 17, a base member 18, and a movable member MB, which are part of the fixed member FB.
  • the wire 8 is configured to movably support the movable member MB in the direction parallel to the XY plane with respect to the fixed member FB.
  • the wire 8 is a suspension wire made of a highly elastic metal material, and includes a first wire 8A to a fourth wire 8D.
  • each of the first wire 8A to the fourth wire 8D has its lower end (Z2 side end) fixed to the metal member 7 by soldering or adhesive or the like, and its upper end (Z1 side end) is fixed to the biasing member 6 by soldering, adhesive, or the like.
  • the metal member 7 is a member embedded in the base member 18 .
  • the movable-side member MB is supported by the first wire 8A to the fourth wire 8D so as to be movable in the X-axis direction and the Y-axis direction, which are parallel to the XY plane.
  • the insulating substrate 17 is a substrate on which a conductive pattern is formed.
  • the insulating substrate 17 may be any of a flexible printed circuit board, a rigid printed circuit board, and a flexible rigid printed circuit board.
  • the insulating substrate 17 is a multilayer substrate and includes the coil 9 that constitutes the drive mechanism DM.
  • the coil 9 is a film-type coil formed on the insulating substrate 17 by a conductive pattern, and includes first to fourth coils 9A to 9D, as shown in FIG.
  • the coil 9 may be of the wound type or of the laminated type.
  • the drive mechanism DM includes a first drive mechanism that moves the movable-side member MB along the X-axis direction, and a second drive mechanism that moves the movable-side member MB along the Y-axis direction.
  • the first drive mechanism includes a first coil 9A and a third coil 9C provided on the insulating substrate 17, a first magnet 5A that is spaced apart so as to face the first coil 9A in the Z-axis direction, and a Z and a third magnet 5C spaced apart so as to face the third coil 9C in the axial direction.
  • the second drive mechanism includes a second coil 9B and a fourth coil 9D provided on the insulating substrate 17, a second magnet 5B spaced apart so as to face the second coil 9B in the Z-axis direction, a Z and a fourth magnet 5D spaced apart so as to face the fourth coil 9D in the axial direction.
  • An optical element driving device 101 having a substantially rectangular parallelepiped shape is mounted on, for example, a main substrate (not shown).
  • the coil 9 is connected to a current supply source through the insulating substrate 17, the metal member 7 and the main substrate.
  • the driving mechanism DM When the coil 9 is energized, the driving mechanism DM generates an electromagnetic force along a direction parallel to the XY plane.
  • the optical element driving device 101 utilizes electromagnetic force along the direction parallel to the XY plane by the driving mechanism DM, and as the optical element OE along the direction parallel to the XY plane A shift function (camera shake correction function) can be realized by moving the lens.
  • the movable side member MB includes an optical element holding member 2, a damping member 3, a magnet 5, and a biasing member 6, as shown in FIG.
  • the damping member 3 is configured to suppress vibration of the movable member MB with respect to the fixed member FB.
  • the vibration damping member 3 is configured to elastically expand and contract according to the movement of the movable member MB with respect to the fixed member FB.
  • the damping member 3 is configured to suppress vibration of the movable member MB without affecting the original movement of the movable member MB.
  • the damping member 3 is a gel-like damper material formed by curing a fluid resin (adhesive) with ultraviolet light or heat.
  • the damping member 3 may be made of other materials such as thermosetting resin, UV-curable resin, thermosetting silicone rubber, or UV-curable silicone rubber.
  • the damping member 3 has a fine dot pattern for clarity. The same applies to other drawings.
  • the damping member 3 is held on the upper surface of the optical element holding member 2 so as to be movable together with the optical element holding member 2 that constitutes the movable member MB. It is arranged so as to contact a part of the case 4 that constitutes the fixed member FB.
  • the magnets 5 include first magnets 5A to fourth magnets 5D.
  • each of the first magnet 5A to the fourth magnet 5D is a rectangular parallelepiped permanent magnet magnetized to have two poles, the inner side being magnetized to the S pole and the outer side being magnetized to the N pole. ing.
  • FIG. 4 shows a cross pattern of the portion magnetized to the N pole.
  • Each of the first magnet 5A to the fourth magnet 5D is arranged apart from the coil 9 so as to face the coil 9 in the Z-axis direction.
  • Each of the first magnet 5A to the fourth magnet 5D may be magnetized with an N pole on the inside and an S pole on the outside.
  • the optical element holding member 2 is configured to hold the optical element OE and the magnet 5.
  • the optical element holding member 2 is formed by injection molding synthetic resin such as liquid crystal polymer (LCP).
  • LCP liquid crystal polymer
  • the optical element holding member 2 is a substantially rectangular annular frame body RF when viewed from above, and the first magnet 5A to the fourth magnet 5D are located below each of the four sides that constitute the frame body RF. placed. Each of the first magnet 5A to the fourth magnet 5D is fixed to the optical element holding member 2 with an adhesive.
  • the optical element holding member 2 includes a through hole 2K extending parallel to the Z axis.
  • the optical element OE is fixed to the inner peripheral surface of the through hole 2K with an adhesive.
  • a pedestal portion 2d is provided on the end face of the optical element holding member 2 on the subject side (Z1 side). As shown in FIG. 3, the inner portion 6i of the biasing member 6 is attached to the pedestal portion 2d.
  • a housing portion 2Q is provided on the end face of the optical element holding member 2 on the object side (Z1 side).
  • the damping member 3 is accommodated in the accommodating portion 2Q.
  • the housing portion 2Q is a concave portion recessed in the Z2 direction and includes a first housing portion 2Q1 to a fourth housing portion 2Q4.
  • a first damping member 3A is housed in the first housing portion 2Q1
  • a second damping member 3B is housed in the second housing portion 2Q2
  • a third damping member 3C is housed in the third housing portion 2Q3.
  • the fourth damping member 3D is accommodated in the fourth accommodation portion 2Q4.
  • the accommodating portion 2Q may be a through hole extending parallel to the Z-axis. Since the accommodation portion 2Q configured as a through hole allows air to flow out in the Z2 direction, it has the effect of facilitating the injection of the vibration damping member 3 (fluid adhesive) before hardening from the Z1 side. bring.
  • a concave portion 2R (see FIG. 5A) is provided on the end surface of the optical element holding member 2 on the imaging element side (Z2 side).
  • the magnet 5 is housed in the recess 2R.
  • the recess 2R includes a first recess 2R1 to a fourth recess 2R4.
  • the first recess 2R1 houses the first magnet 5A
  • the second recess 2R2 houses the second magnet 5B
  • the third recess 2R3 houses the third magnet 5C.
  • a fourth magnet 5D is accommodated in the fourth recess 2R4.
  • the optical element holding member 2 is provided with a rough dot pattern for clarity.
  • a circular concave portion 2S (see FIG. 5A) is provided on the end surface of the optical element holding member 2 on the imaging element side (Z2 side). The upper portion of the support member 11 is accommodated in the circular recess 2S.
  • the support member 11 is a member for supporting the optical element holding member 2 so that the optical element holding member 2 can move in the direction parallel to the XY plane.
  • the support member 11 is a metal ball having a spherical shape.
  • the support member 11 may be made of a material other than metal, such as resin or ceramics.
  • the support member 11 includes four balls (first ball 11A to fourth ball 11D).
  • the circular recess 2S includes a first circular recess 2S1 to a fourth circular recess 2S4. Then, as shown in FIG. 5C, the upper portion of the first ball 11A is accommodated in the first circular recess 2S1, the upper portion of the second ball 11B is accommodated in the second circular recess 2S2, and the third circular recess 2S1 accommodates the upper portion of the second ball 11B.
  • the recess 2S3 accommodates the upper portion of the third ball 11C, and the fourth circular recess 2S4 accommodates the upper portion of the fourth ball 11D.
  • the lower portions of the first to fourth balls 11A to 11D are accommodated in circular recesses 18S (see FIG. 6) formed on the upper surface of the base member 18. As shown in FIG.
  • the biasing member 6 is configured to bias the optical element holding member 2 downward.
  • the biasing member 6 is a leaf spring.
  • the leaf spring is made of a metal plate whose main material is, for example, a copper alloy, a titanium-copper alloy (titanium-copper), or a copper-nickel alloy (nickel-tin-copper).
  • the biasing member 6 is arranged on the end face of the optical element holding member 2 on the Z1 side, as shown in FIG.
  • the biasing member 6 has an inner portion 6i as a movable side support portion fixed to the optical element holding member 2 and an outer portion 6e as a fixed side support portion fixed to the fixed side member FB via the wire 8. and a resilient arm 6g located between the inner portion 6i and the outer portion 6e.
  • the inner portion 6i includes a first inner portion 6i1 to a fourth inner portion 6i4, the outer portion 6e includes a first outer portion 6e1 to a fourth outer portion 6e4, and the elastic arm portion 6g includes a fourth inner portion 6i1 to a fourth inner portion 6i4. It includes one elastic arm portion 6g1 to a fourth elastic arm portion 6g4.
  • a through hole 6x through which the upper end of the wire 8 is inserted and fixed is formed in the outer portion 6e.
  • the first outer portion 6e1 is formed with a first through hole 6x1 through which the upper end of the first wire 8A is inserted and fixed, and the second outer portion 6e2 is formed with the upper end of the second wire 8B.
  • a second through hole 6x2 is formed through which the part is inserted and fixed.
  • the third outer portion 6e3 is formed with a third through hole 6x3 through which the upper end of the third wire 8C is inserted and fixed, and the fourth outer portion 6e4 is formed with the upper end of the fourth wire 8D.
  • a fourth through hole 6x4 is formed to be inserted and fixed.
  • the upper end of the wire 8 and the outer portion 6e of the biasing member 6 are joined by solder.
  • the inner portion 6i is attached to the pedestal portion 2d (see FIG. 4) of the optical element holding member 2 as described above.
  • the inner portion 6i is fixed to the upper surface of the optical element holding member 2 (surface on the Z1 side).
  • a circular protruding portion 2t (see FIG. 4) that protrudes upward (in the Z1 direction) is formed.
  • Fixing of the inner portion 6i is realized by inserting the protrusion 2t into the through hole TH1 (see FIG. 4) formed in the inner portion 6i and applying an adhesive.
  • the fixing of the inner portion 6i may be achieved by inserting the protrusion 2t into the through hole TH1 formed in the inner portion 6i and performing hot crimping or cold crimping.
  • the insulating substrate 17 is a multi-layer substrate attached to the base member 18, and is configured to allow electrical connection between the coil 9 and the sensor 10 and the outside. Specifically, in addition to the conductive pattern connected to the coil 9, the insulating substrate 17 includes solder lands for mounting the sensor 10, conductive patterns, and the like (hereinafter referred to as "conductive patterns, etc.”). It is included. An opening 17K is formed in the center of the insulating substrate 17. As shown in FIG.
  • the base member 18 is formed by injection molding using synthetic resin such as liquid crystal polymer.
  • the base member 18 has a substantially rectangular contour in top view and has an opening 18K in the center.
  • the base member 18 is provided with a fine dot pattern for clarity.
  • An insulating substrate 17 is fixed to the upper surface of the base member 18 on the subject side (Z1 side surface) with an adhesive.
  • the opening 18K corresponds to the opening 17K formed in the insulating substrate 17.
  • a recess 18B for accommodating the sensor 10 is formed on the upper surface of the base member 18.
  • the recess 18B includes a first recess 18B1 and a second recess 18B2.
  • the sensor 10 is configured to detect the position of the movable side member MB.
  • a plurality of sensors 10 are provided so as to detect the displacement of the movable member MB in the X-axis direction and the displacement in the Y-axis direction.
  • the sensor 10 includes a first sensor 10A and a second sensor 10B.
  • the sensor 10 is accommodated in the recess 18B while attached to the lower side (Z2 side) of the insulating substrate 17.
  • the first sensor 10A is housed in the first recess 18B1
  • the second sensor 10B is housed in the second recess 18B2.
  • the senor 10 is composed of a Hall element, and by measuring the output voltage of the Hall element that changes according to the magnitude of the magnetic field from the magnet 5 received by the Hall element, the movable sensor including the magnet 5 is detected. It is configured to be able to detect the position of the side member MB.
  • the sensor 10 is a giant magneto-resistive effect (GMR) element, a semiconductor magneto-resistive (SMR) element, an anisotropic magneto-resistive (AMR) element, or a tunnel magneto-resistive (Tunnel Magneto Resistive: TMR) element or other magnetoresistive element may be used to detect the position of the movable side member MB.
  • GMR giant magneto-resistive effect
  • SMR semiconductor magneto-resistive
  • AMR anisotropic magneto-resistive
  • TMR tunnel magneto-resistive
  • a circular recess 18S for accommodating the support member 11 is formed on the upper surface of the base member 18. As shown in FIG. Specifically, at the four corners of the base member 18, there are four circular recesses 18S (first circular recess 18S1 to fourth circular recess 18S4) are formed.
  • the metal member 7 is embedded in the base member 18 by insert molding.
  • the metal member 7 is formed of, for example, a metal plate containing a material such as copper, iron, or an alloy containing them as a main component.
  • 7A and 7B are perspective views of biasing member 6, metal member 7, and wire 8.
  • FIG. 7A shows the relationship between the metal member 7 embedded in the base member 18 and the biasing member 6 and wire 8 .
  • FIG. 7B shows the relationship between the metal member 7 not embedded in the base member 18, the biasing member 6, and the wire 8.
  • the base member 18 is provided with a fine dot pattern for clarity.
  • the metal member 7 has a corner portion 7C exposed from the base member 18 and a connecting portion 7D that connects two adjacent corner portions 7C.
  • the corner 7C includes a first corner 7C1 to a fourth corner 7C4.
  • the connecting portion 7D includes a first connecting portion 7D1 connecting the first corner portion 7C1 and the second corner portion 7C2, a second connecting portion 7D2 connecting the second corner portion 7C2 and the third corner portion 7C3, and a third corner portion 7D2. It includes a third connecting portion 7D3 connecting the portion 7C3 and the fourth corner portion 7C4, and a fourth connecting portion 7D4 connecting the fourth corner portion 7C4 and the first corner portion 7C1.
  • the first wire 8A has its upper end joined to the first outer portion 6e1 of the biasing member 6 and its lower end joined to the first corner 7C1 of the metal member 7.
  • the second wire 8B has its upper end joined to the second outer portion 6e2 of the biasing member 6 and its lower end joined to the second corner 7C2 of the metal member 7.
  • the third wire 8C has its upper end joined to the third outer portion 6e3 of the biasing member 6 and its lower end joined to the third corner 7C3 of the metal member 7.
  • the fourth wire 8D has its upper end joined to the fourth outer portion 6e4 of the biasing member 6 and its lower end joined to the fourth corner 7C4 of the metal member 7. As shown in FIG.
  • FIGS. 8A to 8C are left side views of the lower member LB.
  • FIG. 8A is a left side view of the entire lower member LB, showing the state of the lower member LB when the optical element holding member 2 is in the initial state.
  • the initial state of the optical element holding member 2 means the state of the optical element holding member 2 when no current is supplied to the coil 9 .
  • FIG. 8B is an enlarged view of range R1 surrounded by a dashed line in FIG. 8A.
  • FIG. 8C is a left side view of the entire lower member LB, showing the state of the lower member LB when the optical element holding member 2 is displaced forward (X1 side) by a distance G2.
  • FIGS. 8A and 8C illustration of the insulating substrate 17 is omitted for clarity.
  • 8A to 8C a coarse dot pattern is applied to the optical element holding member 2, and a fine dot pattern is applied to the base member 18 in FIGS. 8A and 8C.
  • the biasing member 6 is The outer portion 6e is configured to be lower than the inner portion 6i in the vertical direction (Z-axis direction).
  • the third outer portion 6e3 of the biasing member 6 fixed to the third corner portion 7C3 of the metal member 7 via the third wire 8C is the third outer portion 6e3 of the biasing member 6. It is configured to be positioned lower (on the side of the base member 18) than the second inner portion 6i2 and the third inner portion 6i3 by a distance G1. That is, the third elastic arm portion 6g3 is configured to be in an elastically deformed state. The same applies to the first elastic arm portion 6g1, the second elastic arm portion 6g2, and the fourth elastic arm portion 6g4.
  • the biasing member 6 can press the optical element holding member 2 downward (Z2 direction) as indicated by the arrow AR1 regardless of whether the optical element holding member 2 is in the initial state. . Specifically, the optical element holding member 2 is pressed against the upper portion of the ball serving as the support member 11 whose lower portion is accommodated in the circular recess 18S formed on the upper surface of the base member 18 . Therefore, even when the optical element holding member 2 is displaced from the initial state, the biasing member 6 keeps the optical element holding member 2 and the support member 11 in contact with each other, It can maintain a stable contact state.
  • each of the first ball 11A to the fourth ball 11D forming the support member 11 is in a state of being able to roll in the direction parallel to the XY plane. It is sandwiched between the base member 18 and the base member 18 . Therefore, the optical element holding member 2 does not rotate (tilt) about the X axis and does not rotate (tilt) about the Y axis. It can translate along VP1. Mechanically, this parallel movement consists of elastic deformation of the elastic arm portion 6g of the biasing member 6, rolling of the first ball 11A to the fourth ball 11D, and movement of the first wire 8A as shown in FIG. 8C. to the bending of each of the fourth wires 8D.
  • Each of the first to fourth balls 11A to 11D forming the support member 11 rolls on one of the optical element holding member 2 and the base member 18 in a direction parallel to the XY plane. Instead, it may be sandwiched between the optical element holding member 2 and the base member 18 so as to be slidable and rotatable on the spot. Alternatively, each of the first ball 11A to the fourth ball 11D may be sandwiched between the optical element holding member 2 and the base member 18 in a rollable and slidably rotatable state. In these configurations as well, the optical element holding member 2 does not rotate (tilt) about the X-axis and rotate (tilt) about the Y-axis along the virtual plane VP1 parallel to the XY plane. Can move parallel.
  • FIGS. 9A to 9C are diagrams showing configuration examples of the optical element driving device 101.
  • FIG. 9A is a top view of the optical element driving device 101.
  • FIG. 9B is a cross-sectional view of the optical element driving device 101 viewed from the X1 side on a virtual plane parallel to the YZ plane including the dashed-dotted line L1 in FIG. 9A.
  • 9C is a cross-sectional view of the optical element driving device 101 viewed from the X1 side on a virtual plane parallel to the YZ plane including the dashed-dotted line L2 in FIG. 9A.
  • the vibration damping member 3 moving together with the optical element holding member 2 as the movable side member MB is arranged so as to come into contact with the protrusion 4T formed on the top plate portion 4B of the case 4 to hold the optical element. It is arranged in a housing portion 2Q (see FIG. 9B) formed on the upper surface of the member 2. As shown in FIG. 9A, the vibration damping member 3 moving together with the optical element holding member 2 as the movable side member MB is arranged so as to come into contact with the protrusion 4T formed on the top plate portion 4B of the case 4 to hold the optical element. It is arranged in a housing portion 2Q (see FIG. 9B) formed on the upper surface of the member 2. As shown in FIG.
  • the projecting portion 4T is composed of four bending pieces (first bending piece 4T1 to fourth bending piece 4T4) formed at the edge of the opening 4K in the center of the top plate portion 4B.
  • the second bending piece 4T2 is placed inside the second vibration damping member 3B accommodated in the second accommodating portion 2Q2 formed on the upper surface of the optical element holding member 2. It is configured such that the tip portion TP is inserted.
  • the fourth bending piece 4T4 is configured such that the distal end portion TP thereof enters the fourth damping member 3D accommodated in the fourth accommodation portion 2Q4 formed on the upper surface of the optical element holding member 2. there is The same applies to the first bent piece 4T1 and the third bent piece 4T3.
  • the drive mechanism DM displaces the optical element holding member 2 parallel to the virtual plane VP1 (see FIG. 8C) and positions it at the target position, the optical element holding member 2 is positioned at the target position. can be suppressed from vibrating with the center of vibration. Therefore, compared to the case without the vibration damping member 3, the optical element holding member 2 can be displaced from the current position to the target position after the current is supplied to the coil 9. It is possible to shorten the settling time, which is the time it takes to reach the target position.
  • FIG. 9C shows a state in which each of the first balls 11A and the second balls 11B constituting the support member 11 can roll in the direction parallel to the XY plane, and is positioned between the optical element holding member 2 and the base member 18. It shows a state sandwiched between. Specifically, FIG. 9C shows the inner bottom surface (Z1 side surface) of a circular recess 2S formed in the lower surface of the optical element holding member 2 and the inner bottom surface of a circular recess 18S formed in the upper surface of the base member 18. (the surface on the Z2 side) is a plane parallel to the XY plane.
  • FIG. 9C shows the inner bottom surface (Z1 side surface) of a circular recess 2S formed in the lower surface of the optical element holding member 2 and the inner bottom surface of a circular recess 18S formed in the upper surface of the base member 18. (the surface on the Z2 side) is a plane parallel to the XY plane.
  • FIG. 9C also shows that the diameter of the first ball 11A is smaller than the diameter of the first circular recess 2S1 and smaller than the diameter of the first circular recess 18S1 in the Y-axis direction.
  • FIG. 9C also shows that the diameter of the second ball 11B is smaller than the diameter of the second circular recess 2S2 and smaller than the diameter of the second circular recess 18S2 in the Y-axis direction.
  • FIG. 9C shows a configuration in which the first ball 11A and the second ball 11B are sandwiched between the optical element holding member 2 and the base member 18 in a state in which they can roll in directions parallel to the XY plane. is shown. The same applies to the third ball 11C and the fourth ball 11D.
  • the optical element driving device 101 can rotate (tilt) the optical element holding member 2 around the X-axis and rotate (tilt) the optical element holding member 2 around the Y-axis.
  • the optical element holding member 2 can be moved parallel to the XY plane with respect to the member 18 .
  • the optical element driving device 101 may move the optical element holding member 2 parallel to the XY plane with respect to the base member 18 while rotating the optical element holding member 2 around the Z axis.
  • FIG. 10 is a top view of the damping member 3, the magnet 5, the coil 9, and the insulating substrate 17, which are the components of the optical element driving device 101.
  • FIG. 10 illustration of components other than the damping member 3, the magnet 5, the coil 9, and the insulating substrate 17 is omitted for clarity.
  • the magnet 5 is indicated by a dashed line so that the state of the coil 9 located below the magnet 5 can be seen.
  • the drive mechanism DM includes a plurality of magnets 5 (first magnets 5A to 4th magnets 5D) fixed to the optical element holding member 2 (not shown in FIG. 10), and the magnets 5 so as to face the plurality of magnets 5. and a plurality of coils 9 (first coil 9A to fourth coil 9D) provided on an insulating substrate 17.
  • the damping member 3 is housed in a housing portion 2Q formed on the upper surface of the optical element holding member 2 so as to be positioned inside the magnet 5 when viewed from above.
  • the position inside the magnet 5 means a position closer to the central axis AX1 of the optical element holding member 2, which is the central axis of the optical element OE, than the magnet 5 is.
  • the first damping member 3A is arranged on the upper surface of the optical element holding member 2 so as to be positioned inside (the X2 side) of the first magnet 5A
  • the second damping member 3B is positioned inside the first magnet 5A. It is arranged on the upper surface of the optical element holding member 2 so as to be positioned inside (Y2 side) of 5B.
  • damping member 3 is arranged on the upper surface of the optical element holding member 2 so as to be positioned above the magnet 5 in a front view, as shown in FIG. 9B.
  • a position above the magnet 5 means a position higher than the magnet 5 in the Z-axis direction.
  • This configuration has the effect of preventing the size of the optical element driving device 101 from increasing due to the addition of the damping member 3 . This is because, in this configuration, the damping member 3 is attached to the existing structure of the optical element holding member 2 . That is, in this configuration, it is not necessary to add a structure for attaching the damping member 3 .
  • FIG. 11 is a top view of the optical element holding member 2.
  • the corner 2C of the optical element holding member 2 is provided with a dot pattern so that the corner 2C and the side 2E can be distinguished from each other.
  • the division between the corner portion 2C and the side portion 2E shown in FIG. 11 is an example, and the division may be made according to another criterion.
  • the four housing portions 2Q for housing the damping member 3 are configured to be symmetrical with respect to a virtual plane VP2 that includes the central axis AX1 of the optical element holding member 2 and is parallel to the YZ plane. It is Moreover, the four housing portions 2Q are configured to be symmetrical with respect to a virtual plane VP3 that includes the central axis AX1 of the optical element holding member 2 and is parallel to the XZ plane.
  • the optical element holding member 2 is a frame RF having four corners 2C (first corner 2C1 to fourth corner 2C4) and four sides 2E (first side 2E1 to fourth side 2E4). is configured to form Each of the four housing portions 2Q is arranged so as to be adjacent to the edge of the through hole 2K.
  • the first accommodating portion 2Q1 is provided in the inner portion (the portion on the X2 side) of the first side portion 2E1
  • the second accommodating portion 2Q2 is provided in the inner portion (the portion on the Y2 side) of the second side portion 2E2.
  • the third accommodation portion 2Q3 is provided in the inner portion (X1 side portion) of the third side portion 2E3
  • the fourth accommodation portion 2Q4 is provided in the inner portion (Y1 side portion) of the fourth side portion 2E4. ).
  • This configuration in which the four housing portions 2Q are provided in a well-balanced manner around the central axis AX1, is such that when the movable side member MB (optical element holding member 2) is displaced with respect to the fixed side member FB, the vibration damping member 3 is displaced. Undesirable force acting on the movable side member MB (optical element holding member 2) due to elastic deformation can be prevented.
  • housing portion 2Q may be provided on the outer side portion of the side portion 2E, or may be provided on the corner portion 2C. Moreover, two or more housing portions 2Q may be provided on one side portion 2E.
  • FIG. 12 is an exploded perspective view of the optical element driving device 101A.
  • the optical element driving device 101A is different from the optical element driving device 101 in that the biasing member 6 is configured to be directly attached to the base member 18 .
  • the optical element driving device 101 is configured such that the biasing member 6 is attached to the base member 18 via the wire 8 .
  • the base member 18 has four columnar portions 18P (first columnar portion 18P1 to fourth columnar portion 18P4) at four corners. is configured to
  • the biasing member 6 includes one inner portion 6i, four outer portions 6e (first outer portion 6e1 to fourth outer portion 6e4), and between the inner portion 6i and the four outer portions 6e. It is configured to have elastic arm portions 6g (first elastic arm portion 6g1 to fourth elastic arm portion 6g4).
  • FIG. 13 is a top perspective view of the base member 18 to which the biasing member 6 is attached. In FIG. 13, the base member 18 is marked with a dot pattern for clarity.
  • first outer portion 6e1 of the biasing member 6 is attached to the upper end surface of the first columnar portion 18P1
  • the second outer portion 6e2 of the biasing member 6 is attached to the upper end surface of the second columnar portion 18P2.
  • third outer portion 6e3 of the biasing member 6 is attached to the upper end surface of the third columnar portion 18P3
  • the fourth outer portion 6e4 of the biasing member 6 is attached to the upper end surface of the fourth columnar portion 18P4.
  • the fixing of the outer portion 6e to the upper end surface of the columnar portion 18P is achieved by inserting the protrusion 18t projecting upward from the upper end surface of the columnar portion 18P into the through hole TH2 (see FIG. 12) formed in the outer portion 6e. It is realized by applying an adhesive.
  • the fixing of the outer portion 6e to the upper end surface of the columnar portion 18P is realized by inserting the projection portion 18t into the through hole TH2 formed in the outer portion 6e and performing hot or cold crimping. good too.
  • the optical element driving device 101A can be manufactured with a smaller number of parts than the optical element driving device 101 while achieving the same effect as the optical element driving device 101.
  • the optical element driving device 101A has two projections 4T (a left bent piece 4TL and a right bent piece 4TR) formed on the case 4 and two damping members 3 provided on the optical element holding member 2. It differs from the optical element driving device 101 in this point.
  • the optical element driving device 101 has four protrusions 4T formed on the case 4 and four vibration damping members 3 provided on the optical element holding member 2 .
  • the damping member 3 includes a left damping member 3L provided on the upper surface of the second side portion 2E2 of the optical element holding member 2, and an optical damping member 3L. and a right damping member 3R provided on the upper surface of the fourth side portion 2E4 of the element holding member 2.
  • FIG. 14A the vibration damping member 3 is housed in a housing portion 2Q formed on the upper surface of the optical element holding member 2.
  • FIG. 14A and 14B are top views of the optical element holding member 2.
  • FIG. 14A is a top view of the optical element holding member 2 that constitutes the optical element driving device 101A.
  • FIG. 14B is a top view of another example of the optical element holding member 2 that constitutes the optical element driving device 101A.
  • the housing portion 2Q is formed on the left side housing portion 2QL formed on the upper surface of the second side portion 2E2 of the optical element holding member 2 and on the upper surface of the fourth side portion 2E4 of the optical element holding member 2. and a right accommodation portion 2QR.
  • the left accommodation portion 2QL is provided in the central portion of the second side portion 2E2
  • the right accommodation portion 2QR is provided in the central portion of the fourth side portion 2E4.
  • the left damping member 3L is housed in the left housing portion 2QL
  • the right damping member 3R is housed in the right housing portion 2QR.
  • the left damping member 3L and the right damping member 3R are symmetrical with respect to a virtual plane VP4 that includes the central axis AX1 of the optical element holding member 2 and is parallel to the YZ plane. It is configured to be symmetrical with respect to a virtual plane VP5 that includes AX1 and is parallel to the XZ plane.
  • This configuration in which the two accommodating portions 2Q are provided in a well-balanced manner with the central axis AX1 interposed therebetween, prevents the damping member 3 from vibrating when the movable side member MB (optical element holding member 2) is displaced with respect to the fixed side member FB. Undesirable force acting on the movable side member MB (optical element holding member 2) due to elastic deformation can be prevented.
  • the housing portion 2Q is configured to have a rectangular or elliptical outer shape when viewed from above, but is configured to have a circular or polygonal outer shape when viewed from above. may have been
  • the housing portion 2Q may be provided in a portion other than the central portion of the side portion 2E.
  • the housing portion 2Q may be provided on the inner portion of the side portion 2E or may be provided on the outer portion of the side portion 2E.
  • the accommodating part 2Q may be provided at the corner.
  • two or more housing portions 2Q may be provided on one side portion 2E.
  • the housing portion 2Q may be composed only of the rear housing portion 2QB formed on the upper surface of the third side portion 2E3 of the optical element holding member 2.
  • the optical element driving device 101 includes, for example, as shown in FIGS.
  • An optical element holding member 2 arranged above the member 18 and capable of holding the optical element OE, a support member 11 arranged between the base member 18 and the optical element holding member 2, and the optical element holding member 2 as a base.
  • the biasing member 6 that biases the member 18 side downward, and the optical element holding member 2 supported by the supporting member 11 are perpendicular to the vertical direction (the direction in which the base member 18 and the optical element holding member 2 face each other).
  • a driving mechanism DM for moving along a plane (virtual plane VP1 (see FIG. 8C) parallel to the XY plane orthogonal to the Z axis).
  • the drive mechanism DM is configured as an electromagnetic drive mechanism having at least a coil 9 and a magnet 5 in the example shown in FIG.
  • the optical element holding member 2 has an accommodating portion 2Q (see FIG. 4) that accommodates the damping member 3.
  • the case 4 that constitutes the fixed member FB has a projecting portion 4T whose tip portion TP is inserted into the accommodating portion 2Q. A tip portion TP of the projecting portion 4T is in contact with the damping member 3 provided in the housing portion 2Q.
  • the optical element driving device 101 can more quickly move the optical element OE to the target position. That is, the optical element driving device 101 can shorten the time until the displacement (movement) settles down when the optical element holding member 2 moves.
  • the damping member 3 can quickly converge the vibration of the optical element holding member 2 (optical element OE) about the target position when the optical element holding member 2 (optical element OE) is positioned at the target position. Because we can.
  • the fixed-side member FB desirably includes a housing HS (case 4) having an outer peripheral wall portion 4A and a top plate portion 4B.
  • the optical element holding member 2 is arranged inside the housing HS.
  • the housing portion 2Q formed on the upper surface of the optical element holding member 2 is open upward (on the side of the top plate portion 4B).
  • the projecting portion 4T is configured to extend downward (toward the base member 18 side) from the top plate portion 4B so that the tip portion TP is inserted into the housing portion 2Q.
  • This configuration ensures that the vibration damping member 3 is held in the housing portion 2Q, and can prevent the vibration damping member 3 from falling off from the optical element holding member 2.
  • the top plate portion 4B is desirably made of a metal plate and has an opening 4K.
  • the projecting portion 4T is configured by a bent piece that is bent at the edge of the opening 4K.
  • the protruding portion 4T includes first bending piece 4T1 to fourth bending piece 4T4.
  • This configuration has the effect of realizing a damping structure using the damping member 3 without excessively increasing the number of parts by using the existing member (case 4).
  • the drive mechanism DM desirably includes a plurality of magnets 5 fixed to the optical element holding member 2 and a plurality of coils 9 supported by the base member 18 so as to face the magnets 5 .
  • the accommodating portion 2Q is arranged inside the magnet 5 when viewed from above.
  • This configuration has the effect of suppressing an increase in the dimension of the driving mechanism DM in the Z-axis direction and realizing a thin optical element driving device 101 .
  • the optical element holding member 2 is configured to form a frame RF including four side portions 2E, as shown in FIG.
  • the accommodating portion 2Q is provided on each of the four side portions 2E.
  • the accommodation portion 2Q may be provided on one, two, or three of the four side portions 2E.
  • This configuration has the effect of suppressing an increase in the size of the optical element driving device 101 because the empty space in the side portion 2E of the optical element holding member 2 is used to form the housing portion 2Q.
  • the biasing member 6 is typically a leaf spring, and has an inner portion 6i as a movable side support portion fixed to the optical element holding member 2 and a fixed side support portion 6i fixed to the fixed side member FB. It includes an outer portion 6e and a resilient arm 6g located between the inner portion 6i and the outer portion 6e.
  • the outer portion 6e as a fixed-side support portion is fixed to the base member 18 via a suspension wire, or fixed directly to the base member 18.
  • the outer portion 6e is fixed to corners 7C of the metal member 7 embedded in the base member 18 via wires 8 as suspension wires.
  • the outer portion 6e is directly fixed to the columnar portion 18P of the base member 18 without suspension wires.
  • This configuration brings about the effect that the movable side member MB can be easily pressed downward by the leaf spring having a simple configuration.
  • the support member 11 is, for example, a plurality of balls arranged between the base member 18 and the optical element holding member 2.
  • the support member 11 includes a circular recess 2S (see FIG. 5A) formed in the lower surface of the optical element holding member 2 and a circular recess 18S formed in the upper surface of the base member 18 (see FIG. 6). ) and four balls (first ball 11A to fourth ball 11D).
  • This configuration has the effect of easily maintaining the distance between the movable-side member MB and the fixed-side member FB when the movable-side member MB moves in parallel with a ball having a simple configuration.
  • the lower end of the wire 8 is fixed to the corner 7C of the metal member 7 embedded in the base member 18. It may be fixed.
  • the accommodating portion 2Q for accommodating the damping member 3 is formed so as to open upward on the upper surface of the optical element holding member 2. It may be formed so as to open sideways.
  • the projecting portion 4T may be formed as a bent piece extending inward from the outer peripheral wall portion 4A of the case 4 .
  • the housing portion 2Q may be formed on the lower surface of the optical element holding member 2.
  • the projecting portion may be configured to extend upward from the upper surface of the base member 18 .
  • the support member 11 is configured using four balls, but may be configured using one or more shafts and one or more rails. It may be configured using
  • the optical element driving device 101 is configured so that the optical element holding member 2 can move in any direction along the virtual plane VP1 parallel to the XY plane. 2 may be configured so that the movement direction thereof is limited.
  • the optical element driving device 101 may be configured so that the optical element holding member 2 can move only in the X-axis direction, or can be configured so that the optical element holding member 2 can move only in the Y-axis direction. good too.
  • damping member 3A first damping member 3B ... second damping member 3C ... third damping member 3D ; fourth damping member 3L ... left damping member 3R ... right damping member 4 ...
  • Fourth outer part 6g Elastic arm 6g1... First elastic arm 6g2... Second elastic arm 6g3... Third elastic arm 6g4... Fourth elastic arm 6i... Inner portion 6i1... First inner part 6i2... Second inner part 6i3 ... third inner part 6i4 ... fourth inner part 6x ... through hole 6x1 ... first through hole 6x2 ... second through hole 6x3 ... third through hole 6x4 ... third 4 through holes 7... metal member 7C... corner 7C1... first corner 7C2... second corner 7C3... third corner 7C4... fourth corner 7D... ⁇ Connecting portion 7D1... First connecting portion 7 D2... second connecting part 7D3... third connecting part 7D4... fourth connecting part 8... wire 8A... first wire 8B...

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Lens Barrels (AREA)

Abstract

Le présent dispositif d'entraînement d'élément optique (101) comprend : un élément côté fixe (FB) comprenant un élément de base (18) ; un élément de maintien d'élément optique (2) disposé au-dessus de l'élément de base (18) et apte à maintenir un élément optique ; un élément de support disposé entre l'élément de base (18) et l'élément de maintien d'élément optique (2) ; un élément de sollicitation (6) qui sollicite l'élément de maintien d'élément optique (2) vers le bas ; et un mécanisme d'entraînement servant à déplacer l'élément de maintien d'élément optique (2) supporté par l'élément de support le long d'un plan perpendiculaire à la direction verticale. L'élément de maintien d'élément optique (2) comporte une partie de réception servant à recevoir un élément d'amortissement de vibrations (3). Un boîtier (4) servant d'élément côté fixe (FB) comporte une partie en saillie (4T) ayant une partie de pointe insérée dans la partie de réception. La partie de pointe de la partie en saillie (4T) est en contact avec l'élément d'amortissement de vibrations (3) disposé dans la partie de réception.
PCT/JP2022/009989 2021-03-17 2022-03-08 Dispositif d'entraînement d'élément optique WO2022196440A1 (fr)

Priority Applications (2)

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CN202280016618.XA CN116940891A (zh) 2021-03-17 2022-03-08 光学元件驱动装置
JP2023506995A JP7467762B2 (ja) 2021-03-17 2022-03-08 光学素子駆動装置

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JP2021043897 2021-03-17
JP2021-043897 2021-03-17

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WO2022196440A1 true WO2022196440A1 (fr) 2022-09-22

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007155801A (ja) * 2005-11-30 2007-06-21 Mitsumi Electric Co Ltd カメラモジュール
WO2015045527A1 (fr) * 2013-09-27 2015-04-02 シャープ株式会社 Module d'appareil photo
CN106842479A (zh) * 2015-12-07 2017-06-13 三星电机株式会社 相机模块
JP2017219779A (ja) * 2016-06-10 2017-12-14 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． レンズユニット
JP2020166129A (ja) * 2019-03-29 2020-10-08 エーエーシー コミュニケーション テクノロジーズ（ジョウシュウ）カンパニーリミテッド カメラ用レンズ駆動装置
JP2021140017A (ja) * 2020-03-04 2021-09-16 日本電産コパル株式会社 レンズユニット駆動装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007155801A (ja) * 2005-11-30 2007-06-21 Mitsumi Electric Co Ltd カメラモジュール
WO2015045527A1 (fr) * 2013-09-27 2015-04-02 シャープ株式会社 Module d'appareil photo
CN106842479A (zh) * 2015-12-07 2017-06-13 三星电机株式会社 相机模块
JP2017219779A (ja) * 2016-06-10 2017-12-14 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． レンズユニット
JP2020166129A (ja) * 2019-03-29 2020-10-08 エーエーシー コミュニケーション テクノロジーズ（ジョウシュウ）カンパニーリミテッド カメラ用レンズ駆動装置
JP2021140017A (ja) * 2020-03-04 2021-09-16 日本電産コパル株式会社 レンズユニット駆動装置

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CN116940891A (zh) 2023-10-24
JP7467762B2 (ja) 2024-04-15

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