WO2021065150A1 - Lens driving device, interchangeable lens, and imaging apparatus - Google Patents

Lens driving device, interchangeable lens, and imaging apparatus Download PDF

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Publication number
WO2021065150A1
WO2021065150A1 PCT/JP2020/027479 JP2020027479W WO2021065150A1 WO 2021065150 A1 WO2021065150 A1 WO 2021065150A1 JP 2020027479 W JP2020027479 W JP 2020027479W WO 2021065150 A1 WO2021065150 A1 WO 2021065150A1
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WO
WIPO (PCT)
Prior art keywords
lens
driving device
support shaft
supported
leaf spring
Prior art date
Application number
PCT/JP2020/027479
Other languages
French (fr)
Japanese (ja)
Inventor
橋本　光生
正英 古川
加藤　圭太郎
Original Assignee
ソニー株式会社
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 ソニー株式会社 filed Critical ソニー株式会社
Priority to JP2021550358A priority Critical patent/JPWO2021065150A1/ja
Publication of WO2021065150A1 publication Critical patent/WO2021065150A1/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
    • G03B17/14—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets interchangeably
    • 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 technology relates to a technical field of a lens driving device for moving a lens in the optical axis direction, an interchangeable lens equipped with this lens driving device, and an imaging device equipped with this lens driving device.
  • Some cameras, interchangeable lenses, mobile phones, etc. that have an imaging function are provided with a lens driving device that moves the lens in the optical axis direction (see, for example, Patent Document 1).
  • Such a lens driving device has a lens holder for holding the lens, and is also called a camera module.
  • the lens holder is moved in the optical axis direction by an actuator together with the lens, and zooming and focusing are performed by moving the lens in the optical axis direction.
  • an ultrasonic motor in which a driving force is generated by an electromechanical conversion element is used as an actuator for moving a lens in the optical axis direction.
  • the actuator is held by being pressed against one end of an electromechanical conversion element in a state in which a shaft-shaped portion continuous to one end is urged by a leaf spring which is a band-shaped elastic body.
  • a voltage is applied to the electromechanical conversion element of the actuator, the vibration generated in the electromechanical conversion element is transmitted to the lens holder as a driving force, and the above-mentioned axial portion reciprocates due to the transmitted driving force to cause the lens. Is moved in the optical axis direction together with the lens holder.
  • the lens driving device in which a part of the actuator is held in a state of being pressed by a leaf spring as described above, it is necessary that the driving force is transmitted from the actuator to the lens holder in a stable state.
  • the driving force In order to secure a stable transmission state of the driving force from the actuator to the lens holder, it is necessary to secure a stable holding state by the leaf spring for the actuator, and the actuator must be in a state where the leaf spring is not plastically deformed. It is desirable to be pressed.
  • the purpose of the lens driving device, the interchangeable lens, and the imaging device of the present technology is to secure a stable holding state by the leaf spring for the actuator so that a stable driving force is transmitted from the actuator to the lens holder. To do.
  • the lens driving device includes a lens holder having a shaft insertion hole and holding a lens, an actuator for moving the lens holder and the lens in the optical axis direction of the lens, and the shaft insertion hole. It is provided with a leaf spring having a support shaft inserted into the lens holder, a supported portion supported by the support shaft, and a pressing portion for pressing the actuator against the lens holder by an urging force.
  • the support shaft is provided as a separate member from the lens holder, and the support shaft can be inserted into the shaft insertion hole with the leaf spring assembled to the lens holder.
  • annular lens holding portion that holds the lens in the lens holder, a spring mounting portion to which the leaf spring is mounted, and reinforcement coupled to the spring mounting portion. It is desirable that a part is provided.
  • the spring mounting portion is reinforced by the reinforcing portion, so that the deformation of the spring mounting portion due to the force applied from the leaf spring to the lens holder is suppressed.
  • the lens holding portion and the spring mounting portion are formed of a resin material
  • the reinforcing portion is formed of a metal material
  • the reinforcing portion is formed by insert molding. It is desirable that the spring mounting portion and the lens holding portion be integrally formed.
  • the reinforcing portion is provided with a base surface portion facing at least a part of the leaf spring in the thickness direction of the leaf spring.
  • the base surface portion provided on the reinforcing portion is coupled to the spring mounting portion in a state of facing the leaf spring.
  • the reinforcing portion is provided with a bent surface portion bent with respect to the base surface portion.
  • the base surface portion and the bent surface portion bent with respect to the base surface portion are coupled to the spring mounting portion in different directions.
  • the reinforcing portion is provided with a receiving surface portion that receives an actuator pressed by the pressing portion.
  • the leaf spring is attached to the spring attachment portion in a state where a part of the leaf spring and a part of the spring attachment portion are not in contact with each other.
  • the support shaft is formed of a carbon fiber reinforced resin.
  • the support shaft has high strength and high vibration resistance.
  • a part of the support shaft is inserted into the shaft insertion hole in a state of protruding from the lens holder, and the supported portion is the support shaft in the support shaft. It is desirable to be supported by a portion protruding from the lens holder.
  • the supported portion is located on the outside of the lens holder.
  • the interchangeable lens according to the present technology includes a lens driving device arranged inside, and the lens driving device includes a lens holder having a shaft insertion hole and holding a lens, and the lens holder and the lens.
  • An actuator that moves the lens in the optical axis direction, a support shaft that is inserted into the shaft insertion hole, a supported portion that is supported by the support shaft, and a pressing portion that presses the actuator against the lens holder by urging force. It is equipped with a leaf spring to have.
  • the support shaft is provided as a separate member from the lens holder, and the support shaft can be inserted into the shaft insertion hole with the leaf spring assembled to the lens holder.
  • the imaging device includes a lens driving device arranged inside and an imaging element that converts an optical image captured via the lens driving device into an electrical signal, and the lens driving device includes the lens driving device.
  • a lens holder having a shaft insertion hole and holding a lens, an actuator for moving the lens holder and the lens in the optical axis direction of the lens, a support shaft inserted through the shaft insertion hole, and the support shaft. It is provided with a leaf spring having a supported portion to be supported and a pressing portion for pressing the actuator against the lens holder by an urging force.
  • the support shaft is provided as a separate member from the lens holder, and the support shaft can be inserted into the shaft insertion hole with the leaf spring assembled to the lens holder.
  • FIG. 2 to 11 show an embodiment of the lens driving device, the interchangeable lens, and the imaging device of the present technology, and this figure is a perspective view showing an example in which the lens driving device is provided in a mobile phone functioning as the imaging device. It is a figure. It is a perspective view which shows the example which provided the lens driving device in the interchangeable lens. It is a perspective view which shows the example which provided the lens drive device to the camera which is an image pickup apparatus. It is an exploded perspective view of the lens driving device. It is a perspective view of the lens driving device. It is an exploded perspective view of a drive body. It is a front view of a drive body. It is a perspective view which shows the state which the reinforcement part is separated from the spring attachment part in a lens holder.
  • the present technology imaging device is applied to a mobile phone having an imaging function
  • the present technology lens driving device is applied to a lens driving device incorporated in this mobile phone.
  • the scope of application of the image pickup device and the lens drive device of the present technology is not limited to the mobile phone and the lens drive device incorporated in the mobile phone, respectively.
  • the image pickup device and the lens drive device of the present technology include, for example, various image pickup devices such as a still camera, a video camera, a tablet terminal having an image pickup function, and a personal computer having an image pickup function, or various lens drives incorporated in these image pickup devices. It can be widely applied to devices.
  • front-back, up-down, left-right directions are shown with the optical axis direction of the lens as the front-back direction.
  • front-back, up-down, left-right directions shown below are for convenience of explanation, and the implementation of the present technology is not limited to these directions.
  • the lens driving device 1 is arranged inside the image pickup device 100 that functions as a mobile phone, for example (see FIG. 1).
  • the imaging device 100 for example, necessary parts are arranged inside and outside the housing 101 formed in a flat shape, and a photographing lens 102 is attached to one surface side in the thickness direction of the housing 101.
  • a plurality of operation units and display units (not shown) are provided on the other surface of the housing 101 in the thickness direction.
  • the lens driving device 1 is arranged inside the housing 101 at a position corresponding to the photographing lens 102.
  • An image sensor (not shown) such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor) is arranged inside the housing 101 at a position opposite to the photographing lens 102 with the lens driving device 1 interposed therebetween.
  • CCD Charge Coupled Device
  • CMOS Complementary Metal Oxide Semiconductor
  • the lens driving device 1 may be arranged inside the interchangeable lens 200, for example (see FIG. 2).
  • the interchangeable lens 200 is removable from the device body 300.
  • the apparatus main body 300 is formed by arranging necessary parts inside and outside the housing 301.
  • the image pickup device 400 is configured by the interchangeable lens 200 and the device main body 300.
  • various operation units 302, 302, ... are arranged on the upper surface and the rear surface.
  • the operation units 302, 302, ... are provided with, for example, a power button, a shutter button, a zoom knob, a mode switching knob, and the like.
  • a display (display unit) (not shown) is arranged on the rear surface of the housing 301.
  • a circular opening 301a is formed on the front surface of the housing 301, and a portion around the opening 301a is provided as a mount portion 303 for attaching the interchangeable lens 200.
  • An image sensor 304 such as a CCD or CMOS is arranged inside the housing 301, and the image sensor 304 is located behind the opening 301a.
  • a lens mount 201 to be bayonet-coupled is provided on the mount 303 of the apparatus main body 300.
  • the interchangeable lens 200 is provided with a zoom ring 202 and a focus ring 203. Manual zooming is performed by rotating the zoom ring 202, and manual focusing is performed by rotating the focus ring 203.
  • the interchangeable lens 200 has an outer housing 204 formed in a substantially cylindrical shape and a photographing lens 205 arranged on the frontmost side.
  • the zoom ring 202 and the focus ring 203 are rotatably supported on the outer surface side of the outer housing 204.
  • the lens driving device 1 may be arranged inside an imaging device 500 such as a still camera or a video camera (see FIG. 3).
  • the imaging device 500 includes a device main body 501 and a lens barrel 502 that is stretchably supported in the front-rear direction (optical axis direction) by the device main body 501, and the lens barrel 502 is housed in the device main body 501 during non-shooting or the like.
  • This is a so-called collapsible type in which the lens barrel 502 protrudes forward from the device main body 501 during shooting or the like.
  • the image pickup apparatus 500 may be of a type in which the lens barrel 502 does not protrude from the apparatus main body 501.
  • a lens driving device 1 is arranged inside the lens barrel 502.
  • An image sensor such as a CCD or CMOS is arranged inside the device main body 501 at a position opposite to the barrier blades 503 and 503 with the lens driving device 1 interposed therebetween.
  • the device main body 501 is composed of, for example, the required parts arranged inside and outside the horizontally long flat housing 504.
  • a flash 505 is provided on the front surface of the housing 504.
  • Various operation units 506, 506, ... Such as a shutter button, a zoom switch, and a power button are provided on the upper surface of the housing 504.
  • a display (display unit) (not shown) is arranged on the rear surface of the housing 504.
  • the lens driving device 1 has a case 2, a cover 3, and a driving body 4 (see FIGS. 4 and 5).
  • the case 2 has a rectangular base plate 5 facing in the front-rear direction and a support member 6 supported on the front surface of the base plate 5.
  • the left and right ends of the base plate 5 are provided with protruding portions 5a and 5a, respectively.
  • the base plate 5 is formed with circular light transmitting holes 5b penetrating the front and rear.
  • a weight arranging hole 5c penetrated in the front-rear direction is formed in one corner on the lower side of the base plate 5.
  • the support member 6 is thicker than the base plate 5 and has an insertion arrangement hole 6a penetrating back and forth on the front side of the light transmission hole 5b.
  • the diameter of the insertion arrangement hole 6a is formed to be larger than the diameter of the light transmission hole 5b.
  • a guide protrusion 6b is provided at a position on the upper end side of the support member 6, and the guide protrusion 6b projects inward toward the center of the insertion arrangement hole 6a.
  • a plurality of guide protrusions 6b may be provided apart from each other in the circumferential direction.
  • An arrangement space 6c opened in the front and left and right is formed at one end on the side of the support member 6.
  • the support member 6 is formed with an insertion space 6d opened upward and laterally at a position directly below the arrangement space 6c, and the insertion space 6d is communicated with the arrangement space 6c.
  • Bearing holes 6e and 6e penetrated in the front and rear are formed in the front and rear portions of the insertion space 6d in the support member 6, respectively.
  • the cover 3 is formed by integrally forming a covering surface portion 7 having a rectangular outer shape facing in the front-rear direction and a peripheral surface portion 8 protruding rearward from the outer peripheral portion of the covering surface portion 7.
  • a circular passage hole 7a is formed in the covering surface portion 7.
  • Coupling holes 8a and 8a are formed at the rear end portions of the portions of the peripheral surface portion 8 that are separated from each other on the left and right sides, respectively.
  • the drive body 4 has a lens holder 9, a support shaft 10, a leaf spring 11, and an actuator 12 (see FIGS. 4, 6 and 7).
  • the lens holder 9 has, for example, a lens holding portion 13 formed of a resin material, a spring mounting portion 14 formed of a resin material, and a reinforcing portion 15 formed of a metal material, each of which is integrally formed by insert molding. Have.
  • the lens holding portion 13 is formed in an annular shape and has a guided groove 13a that is penetrated in the radial direction and opened rearward. A plurality of guided grooves 13a may be formed so as to be separated in the circumferential direction.
  • the lens holding portion 13 holds the lens 16 or a lens group composed of a plurality of lenses.
  • the spring mounting portion 14 is projected from the outer peripheral surface of the lens holding portion 13, and the lateral protrusion 17 protruding sideways and the inclined protrusion 18 protruding diagonally downward are continuous in the circumferential direction of the lens holding portion 13. (See FIGS. 6 to 8).
  • the outer surfaces of the spring mounting portion 14 are one end surface 14a, which is the upper surface of the side protrusion 17, the other end surface 14b, which is the lower surface of the inclined protrusion 18, and the side (outer side) of the side protrusion 17.
  • the inclined surface 14d which is a surface facing diagonally downward of the inclined protrusion 18, the front surface 14e formed from the side protrusion 17 to the inclined protrusion 18, and the side protrusion 17. It has a rear surface 14f formed over the inclined protrusion 18.
  • a shaft insertion hole 19 penetrated in the front and rear is formed in the side protrusion 17.
  • the shaft insertion hole 19 includes an insertion portion 19a through which the support shaft 10 is inserted and a margin portion 19b continuously formed on the lens holding portion 13 side of the insertion portion 19a (see FIG. 7).
  • the vertical width of the margin portion 19b is larger than the vertical width of the insertion portion 19a.
  • a pair of first guide protrusions 20 and 20 are provided at the upper end of the side protrusion 17, and a pair of second guide protrusions 21 and 21 are provided at the lower end of the side protrusion 17 (. 6 to 8).
  • the first guide protrusions 20 and 20 and the second guide protrusions 21 and 21 are positioned apart from each other in the front-rear direction, and are formed in a shape that protrudes outward on the side.
  • a positioning surface 20a facing sideways is formed between the first guide protrusions 20 and 20, and the positioning surface 20a is located slightly laterally to the surface other than the positioning surface 20a on the side surface 14c. ..
  • a V-shaped groove 18a is formed in the inclined protrusion 18 which is penetrated in the front-rear direction and opens in the inclined surface 14d.
  • a part of the reinforcing portion 15 is embedded in the spring mounting portion 14, is formed integrally with the lens holding portion 13 and the spring mounting portion 14 by insert molding, and is coupled to the spring mounting portion 14.
  • a pear-skin texture is attached to the reinforcing portion 15 for easy understanding.
  • the reinforcing portion 15 includes a base surface portion 15a that extends vertically and faces in the left-right direction, and first bent surface portions 15b and 15b that are bent in the same direction orthogonal to the base surface portion 15a from the front and rear ends of the upper end portion of the base surface portion 15a.
  • the second bent surface portions 15c and 15c bent in the same direction orthogonal to the base surface portion 15a from the front and rear ends of the portion near the lower end of the base surface portion 15a, and the base surface portion 15a continuous with the lower end of the base surface portion 15a.
  • An inclined surface portion 15d that is inclined with respect to the lower end, a receiving surface portion 15e that is continuously bent at the lower end of the inclined surface portion 15d and bent in a V shape, and an end surface portion 15f that is continuous at the lower end of the receiving surface portion 15e and bent with respect to the receiving surface portion 15e. Consists of.
  • the base surface portion 15a is positioned corresponding to the side surface 14c
  • the first bending surface portion 15b on the front side and the second bending surface portion 15c on the front side are positioned corresponding to the front surface 14e
  • the second bending surface portion 15c on the rear side is located.
  • the bent surface portion 15b of 1 and the second bent surface portion 15c on the rear side are positioned corresponding to the rear surface 14f
  • the inclined surface portion 15d is positioned corresponding to the inclined surface 14d
  • the receiving surface portion 15e corresponds to the groove portion 18a.
  • the end face portion 15f is positioned so as to correspond to the other end face 14b.
  • the spring mounting portion 14 formed of the resin material and the reinforcing portion 15 formed of the metal material are integrally formed, the spring mounting portion 14 is formed by the reinforcing portion 15. It will be reinforced.
  • the lens holding portion 13 and the spring mounting portion 14 are formed of a resin material
  • the reinforcing portion 15 is formed of a metal material
  • the reinforcing portion 15 is insert-molded to form the lens holding portion 13 and the spring mounting portion 14. It is formed integrally with.
  • the reinforcing portion 15 is provided with first bent surface portions 15b and 15b and second bent surface portions 15c and 15c that are bent with respect to the base surface portion 15a, respectively.
  • first bent surface portions 15b and 15b and the second bent surface portions 15c and 15c bent with respect to the base surface portion 15a and the base surface portion 15a are coupled to the spring mounting portion 14 in different directions, so that the reinforcing portion It is possible to secure a high reinforcing effect on the spring mounting portion 14 by 15.
  • the coupling area of the reinforcing portion 15 with respect to the spring mounting portion 14 becomes large, and the reinforcing portion 15 becomes a reinforcing portion. It is possible to secure a higher reinforcing effect on the spring mounting portion 14 by 15.
  • the total area of the first bent surface portions 15b and 15b and the second bent surface portions 15c and 15c is 20% or more of the total area of the reinforcing portion 15.
  • the support shaft 10 is formed in a round shaft shape by, for example, a carbon fiber reinforced resin.
  • the support shaft 10 may be formed of a so-called super engineering resin having high strength and high heat resistance and wear resistance, or may be formed of a metal.
  • the support shaft 10 is inserted into the shaft insertion hole 19 of the spring mounting portion 14 (see FIGS. 6 and 7), and both ends in the axial direction protrude back and forth from the spring mounting portion 14 in the state of being inserted through the shaft insertion hole 19. Will be done.
  • the leaf spring 11 is formed of, for example, a metal material, and the attached portion 22, the supported portion 23, 23, and the pressing portion 24 are integrally formed.
  • the attached portion 22 is formed in a shape that extends vertically and faces the left-right direction.
  • the supported portions 23, 23 are bent with respect to the mounted portion 22, and project from both front and rear ends of the central portion in the vertical direction of the mounted portion 22 in the same direction orthogonal to the mounted portion 22.
  • the supported portion 23 is formed in a hook shape including a connecting portion 25 that is continuous with the mounted portion 22 and extends in the left-right direction and an engaging portion 26 that is bent downward with respect to the tip end portion of the connecting portion 25.
  • the pressing portion 24 is continuous with the lower end of the mounted portion 22 and is inclined with respect to the mounted portion 22.
  • the tip portion of the supported portion 23 may be formed in a U shape.
  • the leaf spring 11 has a pressing portion 24 elastically deformable with respect to the attached portion 22. Further, the leaf spring 11 is made so that the attached portion 22 itself can be elastically deformed in the thickness direction.
  • the actuator 12 is, for example, an ultrasonic motor using a piezoelectric element, and has a drive shaft 27 whose front-rear direction is axially oriented, and an element portion 27a and a weight portion 28 which are continuous at one end in the axial direction of the drive shaft 27.
  • the drive shaft 27 is made of a material having high strength and high slidability, such as carbon fiber reinforced resin.
  • the element portion 27a is formed by alternately laminating piezoelectric ceramics and internal electrodes, and is expanded and contracted by application of a voltage to vibrate and generate a driving force in the front-rear direction with respect to the drive shaft 27.
  • the actuator 12 is attached to the support member 6 in a state where the lens holder 9 for holding the lens 16 is arranged on the support member 6 of the case 2.
  • the lens holder 9 is arranged by inserting the lens holding portion 13 into the insertion arrangement hole 6a, and the spring attachment portion 14 and the reinforcing portion 15 are arranged in the arrangement space 6c and the insertion space 6d.
  • the guide protrusion 6b of the support member 6 is inserted into the guided groove 13a of the lens holder 9.
  • the actuator 12 is attached to the support member 6 by inserting the drive shaft 27 from the rear of the base plate 5 into the bearing holes 6e and 6e via the weight arrangement holes 5c, and the weight portion 28 is arranged in the weight arrangement holes 5c.
  • a part of the drive shaft 27 of the actuator 12 may be fixed to the support member 6 by adhesion or the like. At this time, a part of the drive shaft 27 is inserted into the receiving surface portion 15e of the reinforcing portion 15.
  • the leaf spring 11 is assembled to the spring mounting portion 14.
  • the leaf spring 11 is assembled to the leaf spring 11 by guiding the attached portion 22 to the first guide protrusions 20 and 20 and the second guide protrusions 21 and 21.
  • one end (upper end) 22a of the attached portion 22 is pressed against the positioning surface 20a formed between the first guide protrusions 20, 20 and the pressing portion 24 is the drive shaft of the actuator 12. It is pressed against 27, and the attached portion 22 is positioned so as to face the base surface portion 15a of the reinforcing portion 15 in the thickness direction.
  • the supported portions 23 and 23 do not block the insertion portion 19a of the shaft insertion hole 19, and the engaging portion 26 closes substantially the entire margin portion 19b, respectively, with the front surface 14e of the spring mounting portion 14. It is positioned so as to face the rear surface 14f. At this time, a constant gap H is formed between the mounted portion 22 of the leaf spring 11 and the side surface 14c of the spring mounting portion 14 (see FIG. 7).
  • the support shaft 10 is inserted into the insertion portion 19a of the shaft insertion hole 19 formed in the spring attachment portion 14 of the lens holder 9. At this time, as described above, both ends of the support shaft 10 in the axial direction are projected back and forth from the spring mounting portions 14, respectively.
  • both ends of the support shaft 10 in the axial direction are engaged with the supported portions 23 and 23 of the leaf spring 11, respectively.
  • the support shaft 10 can be inserted into the shaft insertion hole 19 without deforming the leaf spring 11, the leaf spring 11 is not plastically deformed.
  • the edge portions 26a, 26a on the attached portion 22 side of the engaging portions 26, 26 and the engaging portions 26, 26 side edge portions 25a, 25a of the connecting portion 25 are engaged with the support shaft 10. Will be combined.
  • the leaf spring 11 is supported by the support shaft 10 and the leaf spring 11 is prevented from falling off from the spring mounting portion 14.
  • the supported portions 23, 23 are supported by the portion of the support shaft 10 protruding from the lens holder 9 as described above, the supported portions 23, 23 are located outside the lens holder 9, and thus are supported. It is possible to support the supported portions 23 and 23 on the support shaft 10 while visually recognizing the portions 23 and 23, and the supported portions 23 and 23 can be easily and surely supported by the support shaft 10.
  • the supported portions 23 and 23 can be supported by the support shaft 10 in a stable state.
  • the attached portion 22 Since the deformation of the attached portion 22 due to the gap H described above is elastic deformation, the attached portion 22 is not plastically deformed even if the attached portion 22 is deformed by the amount of the gap H. Further, when the force Q applied to the attached portion 22 is removed, the attached portion 22 is elastically restored by the amount of the gap H. When the attached portion 22 is elastically restored, the engaging portion 26 is displaced in the left-right direction in a direction away from the lens holding portion 13, so that the edge portion 26a of the engaging portion 26 is pressed against the support shaft 10 and at the same time. The support shaft 10 is pressed against the wall surface 19c forming the insertion portion 19a, and the leaf spring 11 is stably supported by the support shaft 10.
  • the leaf spring 11 is pressed against the drive shaft 27 of the actuator 12 in a state where the supported portions 23 and 23 are supported by the support shaft 10 and the pressing portion 24 is elastically deformed to generate an urging force.
  • One end portion 22a is pressed against the positioning surface 20a, and a force F is applied to the spring mounting portion 14 from the mounted portion 22 of the leaf spring 11 (see FIG. 7).
  • the force F is applied to the spring mounting portion 14 from the mounted portion 22 of the leaf spring 11, but the reinforcing portion 15 is provided with the base surface portion 15a facing the mounted portion 22.
  • the base surface portion 15a provided on the reinforcing portion 15 is coupled to the spring mounting portion 14 in a state of facing the leaf spring 11, the spring mounting portion 14 due to the force applied from the leaf spring 11 to the lens holder 9 Deformation can be suppressed efficiently.
  • the pressing portion 24 of the leaf spring 11 is pressed against the drive shaft 27 and one end portion 22a of the attached portion 22 is pressed against the positioning surface 20a, the supported portions 23 and 23 are separated from the lens holding portion 13 in the left-right direction. A force P in the direction of the lens is applied. Therefore, the edge portion 26a and the edge portion 25a of the engaging portion 26 are pressed against the support shaft 10, and the support shaft 10 is easily pressed against the wall surface 19c and the wall surface 19d forming the insertion portion 19a, so that the support shaft 10 of the leaf spring 11 is easily pressed. It is possible to secure a stable support state for.
  • the pressing portion 24 is elastically deformed with respect to the supported portion 23 and pressed against the drive shaft 27, and one end portion 22a of the attached portion 22 Is pressed against the positioning surface 20a.
  • the pressing portion 24 is elastically deformed and pressed against the drive shaft 27, the drive shaft 27 is pressed against the receiving surface portion 15e of the reinforcing portion 15 by the urging force of the pressing portion 24.
  • the reinforcing portion 15 is provided with a receiving surface portion 15e that receives the actuator 12 pressed by the pressing portion 24.
  • the gap H is formed between the mounted portion 22 of the leaf spring 11 and the side surface 14c of the spring mounting portion 14, a part of the leaf spring 11 and a part of the spring mounting portion 14 are not in contact with each other. In this state, the leaf spring 11 is attached to the spring mounting portion 14, and it is possible to suppress the generation of dust due to the contact between the leaf spring 11 and the spring mounting portion 14.
  • the presence of the spring mounting portion 14 is less likely to affect the elastic force of the leaf spring 11. , The stable elastic force of the leaf spring 11 can be secured.
  • the assembly of the lens driving device 1 is completed by connecting the case 2 and the cover 3 in the state where the leaf spring 11 is supported by the support shaft 10.
  • the case 2 and the cover 3 are joined by inserting and engaging the coupling protrusions 5a and 5a of the case 2 into the coupling holes 8a and 8a of the cover 3, respectively.
  • the lens driving device 1 assembled as described above, the light of the subject captured at the time of shooting is incident on the lens 16 through the passage hole 7a of the cover 3, and the light incident on the lens 16 is the light transmission hole of the case 2. It is transmitted through 5b and incident on the image sensor.
  • the lens holder 9 and the lens 16 are integrally moved in the optical axis direction by the driving force transmitted from the actuator 12 to the lens holder 9.
  • the guided groove 13a of the lens holder 9 is guided by the guide protrusion 6b of the support member 6, and the lens holder 9 and the lens 16 are moved with high accuracy in the optical axis direction, for example, focusing and zooming are performed.
  • the lens driving device 1 may be provided with a blur correction mechanism that corrects image blur by displacing the driving body 4 in a direction orthogonal to the optical axis direction.
  • both ends of the support shaft 10 inserted into the shaft insertion hole 19 in the axial direction are projected back and forth from the spring mounting portion 14, but the support shaft 10 is projected from the spring mounting portion 14.
  • the supported portions 23, 23 can be supported by the support shaft 10 in a state where they are not projected (see FIG. 10).
  • insertion holes 29, 29 opened in the spring mounting portion 14 on the opposite side of the lens 16 are formed so as to be separated from each other in the front-rear direction, and the insertion holes 29, 29 are communicated with the shaft insertion hole 19.
  • the supported portions 23, 23 are supported by portions closer to both ends in the axial direction of the support shaft 10 in a state of being inserted into the insertion holes 29, 29, respectively.
  • the support shaft 10 Since the supported portions 23 and 23 are supported by the portions near both ends of the support shaft 10 in the state of being inserted into the insertion holes 29 and 29, respectively, the support shaft 10 is not projected back and forth from the spring mounting portion 14.
  • the supported portions 23, 23 can be supported by the support shaft 10. Therefore, since the support shaft 10 does not protrude back and forth from the spring mounting portion 14, it is possible to reduce the size of the lens driving device 1 in the optical axis direction.
  • the lens holder 9 for holding the lens 16 the actuator 12 for moving the lens holder 9 and the lens 16 in the optical axis direction, and the shaft insertion hole 19 are inserted.
  • a leaf spring 11 having a support shaft 10, a supported portion 23 supported by the support shaft 10, and a pressing portion 24 that presses the actuator 12 against the lens holder 9 by an urging force is provided.
  • the support shaft 10 is provided as a separate member from the lens holder 9, and the support shaft 10 can be inserted into the shaft insertion hole 19 with the leaf spring 11 assembled to the lens holder 9.
  • the leaf spring 11 is not plastically deformed, and a stable holding state of the leaf spring 11 with respect to the actuator 12 is ensured so that a stable driving force is transmitted from the actuator 12 to the lens holder 9. it can.
  • the lens holder 9 is provided with an annular lens holding portion 13 for holding the lens 16, a spring mounting portion 14 to which the leaf spring 11 is mounted, and a reinforcing portion 15 coupled to the spring mounting portion 14.
  • the spring mounting portion 14 is reinforced by the reinforcing portion 15, the deformation of the spring mounting portion 14 due to the force applied from the leaf spring 11 to the lens holder 9 is suppressed, and the leaf spring 11 is stable with respect to the spring mounting portion 14. The mounted state can be secured.
  • the lens holder 9 since the overall rigidity of the lens holder 9 is increased by the reinforcing portion 15, it is not necessary to increase the thickness of each portion of the lens holder 9 to increase the rigidity, and the lens holder 9 can be miniaturized.
  • the support shaft 10 is formed of carbon fiber reinforced resin, the support shaft 10 has high strength and high vibration resistance, so that a stable support state of the leaf spring 11 with respect to the support shaft 10 can be ensured. At the same time, it is possible to suppress the generation of abnormal noise called so-called squealing due to ultrasonic vibration generated when the actuator 12 is driven.
  • the image pickup apparatus 100 (400, 500) performs recording / reproduction processing of an image signal, a camera block 90 that performs an imaging function, a camera signal processing unit 91 that performs signal processing such as analog-to-digital conversion of a captured image signal, and an image signal processing unit 91. It has an image processing unit 92. Further, the image pickup device 100 includes a display unit 93 for displaying a captured image and the like, an R / W (reader / writer) 94 for writing and reading an image signal to the memory 99, and the entire image pickup device 100.
  • It has a CPU (Central Processing Unit) 95 for control, a lens drive control unit 96 for controlling the drive of a lens arranged in a camera block 90, and an operation unit 97 for various switches and the like in which a user performs a required operation. doing.
  • CPU Central Processing Unit
  • lens drive control unit 96 for controlling the drive of a lens arranged in a camera block 90
  • operation unit 97 for various switches and the like in which a user performs a required operation. doing.
  • the camera block 90 is a portion having the lens driving device 1, and may be an interchangeable lens 200 or a lens barrel 502.
  • the image pickup device 100 is provided with an image pickup device 98 such as a CCD or CMOS that converts an optical image captured by the camera block 90 into an electrical signal.
  • an image pickup device 98 such as a CCD or CMOS that converts an optical image captured by the camera block 90 into an electrical signal.
  • the camera signal processing unit 91 performs various signal processing such as conversion of the output signal from the image pickup element 98 into a digital signal, noise removal, image quality correction, and conversion into a luminance / color difference signal.
  • the image processing unit 92 performs compression coding / decompression decoding processing of an image signal based on a predetermined image data format, conversion processing of data specifications such as resolution, and the like.
  • the display unit 93 has a function of displaying various data such as an operation state of the user's operation unit 97 and a captured image.
  • the image pickup device 100 may not be provided with the display unit 93, and may be configured so that the captured image data is sent to another display device to display the image.
  • the R / W 94 writes the image data encoded by the image processing unit 92 to the memory 99 and reads the image data recorded in the memory 99.
  • the CPU 95 functions as a control processing unit that controls each circuit block provided in the image pickup apparatus 100, and controls each circuit block based on an instruction input signal or the like from the operation unit 97.
  • the lens drive control unit 96 controls a drive source for moving the lens based on a control signal from the CPU 95.
  • the operation unit 97 outputs an instruction input signal corresponding to the operation by the user to the CPU 95.
  • the memory 99 is, for example, a semiconductor memory that can be attached to and detached from a slot connected to the R / W 94, or a semiconductor memory that is preliminarily incorporated inside the image pickup apparatus 100.
  • the shot image signal is output to the display unit 93 via the camera signal processing unit 91 and displayed as a camera-through image.
  • the CPU 95 outputs a control signal to the lens drive control unit 96, and the lens is moved based on the control of the lens drive control unit 96.
  • the shot image signal is output from the camera signal processing unit 91 to the image processing unit 92, compressed and encoded, and converted into digital data in a predetermined data format. Will be converted.
  • the converted data is output to R / W 94 and written to memory 99.
  • the R / W 94 reads the predetermined image data from the memory 99 in response to the operation on the operation unit 97, and the image processing unit 92 performs the decompression / decoding process. After that, the reproduced image signal is output to the display unit 93 and the reproduced image is displayed.
  • imaging means converting the photoelectric conversion process for converting the light captured by the image pickup element 98 into an electric signal to the digital signal for the output signal from the image pickup element 98 by the camera signal processing unit 91.
  • imaging may refer only to the photoelectric conversion process for converting the light captured by the image pickup element 98 into an electric signal, and from the photoelectric conversion process for converting the light captured by the image pickup element 98 into an electric signal. It may also refer to processing such as conversion of the output signal from the image pickup element 98 by the camera signal processing unit 91 into a digital signal, noise removal, image quality correction, and conversion into a brightness / color difference signal, and is captured by the image pickup element 98. After the photoelectric conversion process for converting light into an electric signal, the camera signal processing unit 91 converts the output signal from the image pickup element 98 into a digital signal, noise removal, image quality correction, conversion into a brightness / color difference signal, and the like.
  • the camera block 90 and the image pickup device 100 are configured to include only a part or all of the image pickup element 98, the camera signal processing section 91, the image processing section 92, and the R / W 94 that perform the above processing. You may be.
  • the camera block 90 may be configured to include a part of the image sensor 98, the camera signal processing unit 91, the image processing unit 92, and the R / W 94, and the apparatus main body includes the rest.
  • the present technology can also be configured as follows.
  • a lens holder that has a shaft insertion hole and holds the lens, An actuator that moves the lens holder and the lens in the optical axis direction of the lens, and A support shaft inserted into the shaft insertion hole and A lens driving device including a leaf spring having a supported portion supported by the support shaft and a pressing portion for pressing the actuator against the lens holder by an urging force.
  • the lens holding portion and the spring mounting portion are formed of a resin material, and the lens holding portion and the spring mounting portion are formed of a resin material.
  • the reinforcing portion is formed of a metal material, The lens driving device according to (2), wherein the reinforcing portion is integrally formed with the spring mounting portion and the lens holding portion by insert molding.
  • the lens driving device is A lens holder that has a shaft insertion hole and holds the lens, An actuator that moves the lens holder and the lens in the optical axis direction of the lens, and A support shaft inserted into the shaft insertion hole and An interchangeable lens including a leaf spring having a supported portion supported by the support shaft and a pressing portion for pressing the actuator against the lens holder by an urging force.
  • the lens driving device is A lens holder that has a shaft insertion hole and holds the lens, An actuator that moves the lens holder and the lens in the optical axis direction of the lens, and A support shaft inserted into the shaft insertion hole and An image pickup apparatus including a leaf spring having a supported portion supported by the support shaft and a pressing portion for pressing the actuator against the lens holder by an urging force.
  • Image sensor 400 Image sensor 200 Interchangeable lens 304 Image sensor 500 Image sensor 1
  • Lens drive device 9 Lens holder 10
  • Leaf spring 12 Actuator 13
  • Lens holding part 14 Spring mounting part 15 Reinforcing part 15a Base surface part 15b First bending surface part 15c Second bent surface portion 15e Receiving surface portion 16 Lens 19 Shaft insertion hole 23 Supported portion 24 Pressing portion 98 Image sensor H Gap

Abstract

This lens driving device is provided with: a lens holder that has a shaft insertion hole and holds a lens; an actuator that moves the lens holder and the lens in the optical axis direction of the lens; a support shaft that is inserted into the shaft insertion hole; and a plate spring having a supported part that is supported by the support shaft and a pressing part that presses the actuator against the lens holder by biasing force.

Description

レンズ駆動装置、交換レンズ及び撮像装置Lens drive device, interchangeable lens and image pickup device
　本技術は、レンズを光軸方向へ移動させるレンズ駆動装置、このレンズ駆動装置を備えた交換レンズ及びこのレンズ駆動装置を備えた撮像装置についての技術分野に関する。 The present technology relates to a technical field of a lens driving device for moving a lens in the optical axis direction, an interchangeable lens equipped with this lens driving device, and an imaging device equipped with this lens driving device.
　撮像機能を有するカメラや交換レンズや携帯電話等にはレンズを光軸方向へ移動させるレンズ駆動装置が設けられているものがある（例えば、特許文献１参照）。 Some cameras, interchangeable lenses, mobile phones, etc. that have an imaging function are provided with a lens driving device that moves the lens in the optical axis direction (see, for example, Patent Document 1).
　このようなレンズ駆動装置はレンズを保持するレンズホルダーを備え、カメラモジュールとも称される。レンズホルダーはレンズとともにアクチュエーターによって光軸方向へ移動され、レンズが光軸方向へ移動されることによりズーミングやフォーカシングが行われる。 Such a lens driving device has a lens holder for holding the lens, and is also called a camera module. The lens holder is moved in the optical axis direction by an actuator together with the lens, and zooming and focusing are performed by moving the lens in the optical axis direction.
　特許文献１においては、レンズを光軸方向へ移動させるアクチュエーターとして電気機械変換素子（圧電素子）によって駆動力が生じる超音波モーターが用いられている。特許文献１において、アクチュエーターは電気機械変換素子の一端に連続された軸状の部分が帯状の弾性体である板バネによって付勢された状態で押し付けられて保持されている。アクチュエーターの電気機械変換素子に電圧が印加されると、電気機械変換素子に生じる振動がレンズホルダーに駆動力として伝達され、伝達された駆動力によって上記した軸状の部分が往復運動することによりレンズがレンズホルダーとともに光軸方向へ移動される。 In Patent Document 1, an ultrasonic motor in which a driving force is generated by an electromechanical conversion element (piezoelectric element) is used as an actuator for moving a lens in the optical axis direction. In Patent Document 1, the actuator is held by being pressed against one end of an electromechanical conversion element in a state in which a shaft-shaped portion continuous to one end is urged by a leaf spring which is a band-shaped elastic body. When a voltage is applied to the electromechanical conversion element of the actuator, the vibration generated in the electromechanical conversion element is transmitted to the lens holder as a driving force, and the above-mentioned axial portion reciprocates due to the transmitted driving force to cause the lens. Is moved in the optical axis direction together with the lens holder.
特開２０１５－１０５９８８号公報Japanese Unexamined Patent Publication No. 2015-105988
　ところで、上記のようなアクチュエーターの一部が板バネによって押し付けられた状態で保持されるレンズ駆動装置においては、アクチュエーターからレンズホルダーに対して駆動力が安定した状態で伝達される必要がある。アクチュエーターからレンズホルダーへの駆動力の安定した伝達状態を確保するためには、アクチュエーターに対する板バネによる安定した保持状態が確保される必要があり、板バネが塑性変形を生じていない状態でアクチュエーターに押し付けられることが望ましい。 By the way, in the lens driving device in which a part of the actuator is held in a state of being pressed by a leaf spring as described above, it is necessary that the driving force is transmitted from the actuator to the lens holder in a stable state. In order to secure a stable transmission state of the driving force from the actuator to the lens holder, it is necessary to secure a stable holding state by the leaf spring for the actuator, and the actuator must be in a state where the leaf spring is not plastically deformed. It is desirable to be pressed.
　そこで、本技術レンズ駆動装置、交換レンズ及び撮像装置は、アクチュエーターに対する板バネによる安定した保持状態を確保してアクチュエーターからレンズホルダーに対して安定した駆動力が伝達されるようにすることを目的とする。 Therefore, the purpose of the lens driving device, the interchangeable lens, and the imaging device of the present technology is to secure a stable holding state by the leaf spring for the actuator so that a stable driving force is transmitted from the actuator to the lens holder. To do.
　第１に、本技術に係るレンズ駆動装置は、シャフト挿通孔を有しレンズを保持するレンズホルダーと、前記レンズホルダーと前記レンズを前記レンズの光軸方向へ移動させるアクチュエーターと、前記シャフト挿通孔に挿通される支持シャフトと、前記支持シャフトに支持される被支持部と付勢力によって前記アクチュエーターを前記レンズホルダーに押し付ける押付部とを有する板バネとを備えたものである。 First, the lens driving device according to the present technology includes a lens holder having a shaft insertion hole and holding a lens, an actuator for moving the lens holder and the lens in the optical axis direction of the lens, and the shaft insertion hole. It is provided with a leaf spring having a support shaft inserted into the lens holder, a supported portion supported by the support shaft, and a pressing portion for pressing the actuator against the lens holder by an urging force.
　これにより、支持シャフトがレンズホルダーとは別部材として設けられ、板バネをレンズホルダーに組み付けた状態で支持シャフトをシャフト挿通孔に挿通することが可能になる。 As a result, the support shaft is provided as a separate member from the lens holder, and the support shaft can be inserted into the shaft insertion hole with the leaf spring assembled to the lens holder.
　第２に、上記した本技術に係るレンズ駆動装置においては、前記レンズホルダーに前記レンズを保持する環状のレンズ保持部と前記板バネが取り付けられるバネ取付部と前記バネ取付部に結合された補強部とが設けられることが望ましい。 Secondly, in the lens driving device according to the present technology described above, an annular lens holding portion that holds the lens in the lens holder, a spring mounting portion to which the leaf spring is mounted, and reinforcement coupled to the spring mounting portion. It is desirable that a part is provided.
　これにより、補強部によってバネ取付部が補強されるため、板バネからレンズホルダーに付与される力によるバネ取付部の変形が抑制される。 As a result, the spring mounting portion is reinforced by the reinforcing portion, so that the deformation of the spring mounting portion due to the force applied from the leaf spring to the lens holder is suppressed.
　第３に、上記した本技術に係るレンズ駆動装置においては、前記レンズ保持部と前記バネ取付部が樹脂材料によって形成され、前記補強部が金属材料によって形成され、前記補強部がインサート成形により前記バネ取付部及び前記レンズ保持部と一体に形成されることが望ましい。 Third, in the lens driving device according to the present technology described above, the lens holding portion and the spring mounting portion are formed of a resin material, the reinforcing portion is formed of a metal material, and the reinforcing portion is formed by insert molding. It is desirable that the spring mounting portion and the lens holding portion be integrally formed.
　これにより、補強部をバネ取付部に結合する作業が不要になる。 This eliminates the need to connect the reinforcing part to the spring mounting part.
　第４に、上記した本技術に係るレンズ駆動装置においては、前記補強部には前記板バネの厚み方向において前記板バネの少なくとも一部に対向するベース面部が設けられることが望ましい。 Fourth, in the lens driving device according to the present technology described above, it is desirable that the reinforcing portion is provided with a base surface portion facing at least a part of the leaf spring in the thickness direction of the leaf spring.
　これにより、補強部に設けられたベース面部が板バネに対向した状態でバネ取付部に結合される。 As a result, the base surface portion provided on the reinforcing portion is coupled to the spring mounting portion in a state of facing the leaf spring.
　第５に、上記した本技術に係るレンズ駆動装置においては、前記補強部には前記ベース面部に対して折り曲げられた曲げ面部が設けられることが望ましい。 Fifth, in the lens driving device according to the present technology described above, it is desirable that the reinforcing portion is provided with a bent surface portion bent with respect to the base surface portion.
　これにより、ベース面部とベース面部に対して折り曲げられた曲げ面部とがバネ取付部に異なる向きで結合される。 As a result, the base surface portion and the bent surface portion bent with respect to the base surface portion are coupled to the spring mounting portion in different directions.
　第６に、上記した本技術に係るレンズ駆動装置においては、前記補強部には前記押付部によって押し付けられるアクチュエーターを受ける受け面部が設けられることが望ましい。 Sixth, in the lens driving device according to the present technology described above, it is desirable that the reinforcing portion is provided with a receiving surface portion that receives an actuator pressed by the pressing portion.
　これにより、アクチュエーターを介してバネ取付部に付与される押付力が補強部の一部によって受けられる。 As a result, the pressing force applied to the spring mounting portion via the actuator is received by a part of the reinforcing portion.
　第７に、上記した本技術に係るレンズ駆動装置においては、前記板バネの一部と前記バネ取付部の一部との間に隙間が形成されることが望ましい。 Seventh, in the lens driving device according to the present technology described above, it is desirable that a gap is formed between a part of the leaf spring and a part of the spring mounting portion.
　これにより、板バネの一部とバネ取付部の一部とが非接触の状態で板バネがバネ取付部に取り付けられる。 As a result, the leaf spring is attached to the spring attachment portion in a state where a part of the leaf spring and a part of the spring attachment portion are not in contact with each other.
　第８に、上記した本技術に係るレンズ駆動装置においては、前記支持シャフトが炭素繊維強化樹脂によって形成されることが望ましい。 Eighth, in the lens driving device according to the present technology described above, it is desirable that the support shaft is formed of a carbon fiber reinforced resin.
　これにより、支持シャフトが高い強度と高い耐振動性を有する。 As a result, the support shaft has high strength and high vibration resistance.
　第９に、上記した本技術に係るレンズ駆動装置においては、前記支持シャフトの一部が前記レンズホルダーから突出された状態で前記シャフト挿通孔に挿通され、前記被支持部が前記支持シャフトにおける前記レンズホルダーから突出された部分に支持されることが望ましい。 Ninth, in the lens driving device according to the present technology described above, a part of the support shaft is inserted into the shaft insertion hole in a state of protruding from the lens holder, and the supported portion is the support shaft in the support shaft. It is desirable to be supported by a portion protruding from the lens holder.
　これにより、被支持部がレンズホルダーの外側に位置される。 As a result, the supported portion is located on the outside of the lens holder.
　第１０に、本技術に係る交換レンズは、内部に配置されたレンズ駆動装置を備え、前記レンズ駆動装置は、シャフト挿通孔を有しレンズを保持するレンズホルダーと、前記レンズホルダーと前記レンズを前記レンズの光軸方向へ移動させるアクチュエーターと、前記シャフト挿通孔に挿通される支持シャフトと、前記支持シャフトに支持される被支持部と付勢力によって前記アクチュエーターを前記レンズホルダーに押し付ける押付部とを有する板バネとを備えたものである。 Tenth, the interchangeable lens according to the present technology includes a lens driving device arranged inside, and the lens driving device includes a lens holder having a shaft insertion hole and holding a lens, and the lens holder and the lens. An actuator that moves the lens in the optical axis direction, a support shaft that is inserted into the shaft insertion hole, a supported portion that is supported by the support shaft, and a pressing portion that presses the actuator against the lens holder by urging force. It is equipped with a leaf spring to have.
　これにより、レンズ駆動装置において、支持シャフトがレンズホルダーとは別部材として設けられ、板バネをレンズホルダーに組み付けた状態で支持シャフトをシャフト挿通孔に挿通することが可能になる。 As a result, in the lens drive device, the support shaft is provided as a separate member from the lens holder, and the support shaft can be inserted into the shaft insertion hole with the leaf spring assembled to the lens holder.
　第１１に、本技術に係る撮像装置は、内部に配置されたレンズ駆動装置と前記レンズ駆動装置を介して取り込まれる光学像を電気的信号に変換する撮像素子とを備え、前記レンズ駆動装置は、シャフト挿通孔を有しレンズを保持するレンズホルダーと、前記レンズホルダーと前記レンズを前記レンズの光軸方向へ移動させるアクチュエーターと、前記シャフト挿通孔に挿通される支持シャフトと、前記支持シャフトに支持される被支持部と付勢力によって前記アクチュエーターを前記レンズホルダーに押し付ける押付部とを有する板バネとを備えたものである。 Eleventh, the imaging device according to the present technology includes a lens driving device arranged inside and an imaging element that converts an optical image captured via the lens driving device into an electrical signal, and the lens driving device includes the lens driving device. A lens holder having a shaft insertion hole and holding a lens, an actuator for moving the lens holder and the lens in the optical axis direction of the lens, a support shaft inserted through the shaft insertion hole, and the support shaft. It is provided with a leaf spring having a supported portion to be supported and a pressing portion for pressing the actuator against the lens holder by an urging force.
　これにより、レンズ駆動装置において、支持シャフトがレンズホルダーとは別部材として設けられ、板バネをレンズホルダーに組み付けた状態で支持シャフトをシャフト挿通孔に挿通することが可能になる。 As a result, in the lens drive device, the support shaft is provided as a separate member from the lens holder, and the support shaft can be inserted into the shaft insertion hole with the leaf spring assembled to the lens holder.
図２乃至図１１と共に本技術レンズ駆動装置、交換レンズ及び撮像装置の実施の形態を示すものであり、本図は、撮像装置として機能する携帯電話にレンズ駆動装置が設けられた例を示す斜視図である。2 to 11 show an embodiment of the lens driving device, the interchangeable lens, and the imaging device of the present technology, and this figure is a perspective view showing an example in which the lens driving device is provided in a mobile phone functioning as the imaging device. It is a figure. 交換レンズにレンズ駆動装置が設けられた例を示す斜視図である。It is a perspective view which shows the example which provided the lens driving device in the interchangeable lens. 撮像装置であるカメラにレンズ駆動装置が設けられた例を示す斜視図である。It is a perspective view which shows the example which provided the lens drive device to the camera which is an image pickup apparatus. レンズ駆動装置の分解斜視図である。It is an exploded perspective view of the lens driving device. レンズ駆動装置の斜視図である。It is a perspective view of the lens driving device. 駆動体の分解斜視図である。It is an exploded perspective view of a drive body. 駆動体の正面図である。It is a front view of a drive body. レンズホルダーにおいてバネ取付部から補強部を分離した状態で示す斜視図である。It is a perspective view which shows the state which the reinforcement part is separated from the spring attachment part in a lens holder. 板バネの被取付部が隙間分だけ弾性変形された状態を示す正面図である。It is a front view which shows the state which the attached part of the leaf spring is elastically deformed by the gap. 支持シャフトがレンズホルダーから突出されない状態で板バネの被支持部が支持シャフトに支持された例を概念的に示す断面図である。It is sectional drawing which shows conceptually an example in which the supported portion of a leaf spring is supported by the support shaft in a state where the support shaft is not projected from the lens holder. 撮像装置のブロック図である。It is a block diagram of an image pickup apparatus.
　以下に、本技術レンズ駆動装置、交換レンズ及び撮像装置を実施するための形態を添付図面に従って説明する。 Hereinafter, modes for implementing the present technology lens driving device, interchangeable lens, and imaging device will be described with reference to the attached drawings.
　以下に示した実施の形態は、本技術撮像装置を撮像機能を有する携帯電話に適用し、本技術レンズ駆動装置をこの携帯電話に組み込まれたレンズ駆動装置に適用したものである。 In the embodiment shown below, the present technology imaging device is applied to a mobile phone having an imaging function, and the present technology lens driving device is applied to a lens driving device incorporated in this mobile phone.
　尚、本技術撮像装置及びレンズ駆動装置の適用範囲はそれぞれ携帯電話及び携帯電話に組み込まれたレンズ駆動装置に限られることはない。本技術撮像装置及びレンズ駆動装置は、例えば、スチルカメラ、ビデオカメラ、撮像機能を有するタブレット端末、撮像機能を有するパーソナルコンピューター等の各種の撮像装置又はこれらの撮像装置に組み込まれた各種のレンズ駆動装置に広く適用することができる。 The scope of application of the image pickup device and the lens drive device of the present technology is not limited to the mobile phone and the lens drive device incorporated in the mobile phone, respectively. The image pickup device and the lens drive device of the present technology include, for example, various image pickup devices such as a still camera, a video camera, a tablet terminal having an image pickup function, and a personal computer having an image pickup function, or various lens drives incorporated in these image pickup devices. It can be widely applied to devices.
　以下の説明にあっては、レンズの光軸方向を前後方向として前後上下左右の方向を示す。但し、以下に示す前後上下左右の方向は説明の便宜上のものであり、本技術の実施に関しては、これらの方向に限定されることはない。 In the following explanation, the front-back, up-down, left-right directions are shown with the optical axis direction of the lens as the front-back direction. However, the front-back, up-down, left-right directions shown below are for convenience of explanation, and the implementation of the present technology is not limited to these directions.
　＜レンズ駆動装置が設けられる構成の例＞
　レンズ駆動装置１は、例えば、携帯電話として機能する撮像装置１００の内部に配置されている（図１参照）。 <Example of configuration in which a lens drive device is provided>
The lens driving device 1 is arranged inside the image pickup device 100 that functions as a mobile phone, for example (see FIG. 1).
　撮像装置１００は、例えば、扁平な形状に形成された筐体１０１の内外に所要の各部が配置され、筐体１０１の厚み方向における一方の面側に撮影レンズ１０２が取り付けられている。筐体１０１の厚み方向における他方の面には、図示しない複数の操作部や表示部が設けられている。 In the imaging device 100, for example, necessary parts are arranged inside and outside the housing 101 formed in a flat shape, and a photographing lens 102 is attached to one surface side in the thickness direction of the housing 101. A plurality of operation units and display units (not shown) are provided on the other surface of the housing 101 in the thickness direction.
　筐体１０１の内部には撮影レンズ１０２に対応する位置にレンズ駆動装置１が配置されている。筐体１０１の内部にはレンズ駆動装置１を挟んで撮影レンズ１０２の反対側の位置に、ＣＣＤ（Charge Coupled Device）やＣＭＯＳ（Complementary Metal Oxide Semiconductor）等の図示しない撮像素子が配置されている。 The lens driving device 1 is arranged inside the housing 101 at a position corresponding to the photographing lens 102. An image sensor (not shown) such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor) is arranged inside the housing 101 at a position opposite to the photographing lens 102 with the lens driving device 1 interposed therebetween.
　また、レンズ駆動装置１は、例えば、交換レンズ２００の内部に配置されていてもよい（図２参照）。 Further, the lens driving device 1 may be arranged inside the interchangeable lens 200, for example (see FIG. 2).
　交換レンズ２００は装置本体３００に着脱可能にされている。装置本体３００は筐体３０１の内外に所要の各部が配置されて成る。このような構成においては、交換レンズ２００と装置本体３００によって撮像装置４００が構成される。 The interchangeable lens 200 is removable from the device body 300. The apparatus main body 300 is formed by arranging necessary parts inside and outside the housing 301. In such a configuration, the image pickup device 400 is configured by the interchangeable lens 200 and the device main body 300.
　筐体３０１には、例えば、上面や後面に各種の操作部３０２、３０２、・・・が配置されている。操作部３０２、３０２、・・・としては、例えば、電源釦、シャッター釦、ズーム摘子、モード切替摘子等が設けられている。筐体３０１の後面には図示しないディスプレイ（表示部）が配置されている。 In the housing 301, for example, various operation units 302, 302, ... Are arranged on the upper surface and the rear surface. The operation units 302, 302, ... Are provided with, for example, a power button, a shutter button, a zoom knob, a mode switching knob, and the like. A display (display unit) (not shown) is arranged on the rear surface of the housing 301.
　筐体３０１の前面には円形状の開口３０１ａが形成され、開口３０１ａの周囲の部分が交換レンズ２００を取り付けるためのマウント部３０３として設けられている。筐体３０１の内部にはＣＣＤやＣＭＯＳ等の撮像素子３０４が配置され、撮像素子３０４は開口３０１ａの後方に位置されている。 A circular opening 301a is formed on the front surface of the housing 301, and a portion around the opening 301a is provided as a mount portion 303 for attaching the interchangeable lens 200. An image sensor 304 such as a CCD or CMOS is arranged inside the housing 301, and the image sensor 304 is located behind the opening 301a.
　交換レンズ２００の後端部には、装置本体３００のマウント部３０３に、例えば、バヨネット結合されるレンズマウント２０１が設けられている。交換レンズ２００にはズームリング２０２とフォーカスリング２０３が設けられている。ズームリング２０２が回転操作されることによりマニュアルズーミングが行われ、フォーカスリング２０３が回転操作されることによりマニュアルフォーカシングが行われる。 At the rear end of the interchangeable lens 200, for example, a lens mount 201 to be bayonet-coupled is provided on the mount 303 of the apparatus main body 300. The interchangeable lens 200 is provided with a zoom ring 202 and a focus ring 203. Manual zooming is performed by rotating the zoom ring 202, and manual focusing is performed by rotating the focus ring 203.
　交換レンズ２００は略円筒状に形成された外筐２０４と最も前側に配置された撮影レンズ２０５とを有している。ズームリング２０２とフォーカスリング２０３は外筐２０４の外面側に回転自在に支持されている。 The interchangeable lens 200 has an outer housing 204 formed in a substantially cylindrical shape and a photographing lens 205 arranged on the frontmost side. The zoom ring 202 and the focus ring 203 are rotatably supported on the outer surface side of the outer housing 204.
　さらに、レンズ駆動装置１は、例えば、スチルカメラやビデオカメラ等の撮像装置５００の内部に配置されていてもよい（図３参照）。 Further, the lens driving device 1 may be arranged inside an imaging device 500 such as a still camera or a video camera (see FIG. 3).
　撮像装置５００は装置本体５０１と装置本体５０１に前後方向（光軸方向）へ伸縮自在に支持されたレンズ鏡筒５０２とを備え、非撮影時等にレンズ鏡筒５０２が装置本体５０１に収納され、撮影時等にレンズ鏡筒５０２が装置本体５０１から前方へ突出される所謂沈胴タイプである。但し、撮像装置５００はレンズ鏡筒５０２が装置本体５０１から突出されないタイプであってもよい。 The imaging device 500 includes a device main body 501 and a lens barrel 502 that is stretchably supported in the front-rear direction (optical axis direction) by the device main body 501, and the lens barrel 502 is housed in the device main body 501 during non-shooting or the like. This is a so-called collapsible type in which the lens barrel 502 protrudes forward from the device main body 501 during shooting or the like. However, the image pickup apparatus 500 may be of a type in which the lens barrel 502 does not protrude from the apparatus main body 501.
　レンズ鏡筒５０２は装置本体５０１に収納された状態において、バリア羽根５０３、５０３によって内部に配置されたレンズ等が前方から閉塞される。レンズ鏡筒５０２の内部にはレンズ駆動装置１が配置されている。装置本体５０１の内部にはレンズ駆動装置１を挟んでバリア羽根５０３、５０３の反対側の位置に、ＣＣＤやＣＭＯＳ等の図示しない撮像素子が配置されている。 In the state where the lens barrel 502 is housed in the apparatus main body 501, the lenses and the like arranged inside are blocked from the front by the barrier blades 503 and 503. A lens driving device 1 is arranged inside the lens barrel 502. An image sensor (not shown) such as a CCD or CMOS is arranged inside the device main body 501 at a position opposite to the barrier blades 503 and 503 with the lens driving device 1 interposed therebetween.
　装置本体５０１は、例えば、横長の扁平な筐体５０４の内外に所要の各部が配置されて成る。筐体５０４の前面にはフラッシュ５０５が設けられている。筐体５０４の上面にはシャッター釦やズームスイッチや電源釦等の各種の操作部５０６、５０６、・・・が設けられている。筐体５０４の後面には図示しないディスプレイ（表示部）が配置されている。 The device main body 501 is composed of, for example, the required parts arranged inside and outside the horizontally long flat housing 504. A flash 505 is provided on the front surface of the housing 504. Various operation units 506, 506, ... Such as a shutter button, a zoom switch, and a power button are provided on the upper surface of the housing 504. A display (display unit) (not shown) is arranged on the rear surface of the housing 504.
　＜レンズ駆動装置の構成＞
　レンズ駆動装置１はケース２とカバー３と駆動体４を有している（図４及び図５参照）。 <Structure of lens drive device>
The lens driving device 1 has a case 2, a cover 3, and a driving body 4 (see FIGS. 4 and 5).
　ケース２は前後方向を向く矩形のベース板５とベース板５の前面に支持された支持部材６とを有している。 The case 2 has a rectangular base plate 5 facing in the front-rear direction and a support member 6 supported on the front surface of the base plate 5.
　ベース板５の左右両端部にはそれぞれ結合用突部５ａ、５ａが設けられている。ベース板５には前後に貫通された円形状の光透過孔５ｂが形成されている。ベース板５の下側の一方の角部には前後に貫通された錘配置孔５ｃが形成されている。 The left and right ends of the base plate 5 are provided with protruding portions 5a and 5a, respectively. The base plate 5 is formed with circular light transmitting holes 5b penetrating the front and rear. A weight arranging hole 5c penetrated in the front-rear direction is formed in one corner on the lower side of the base plate 5.
　支持部材６は厚みがベース板５より厚くされ、光透過孔５ｂの前側に前後に貫通された挿入配置孔６ａを有している。挿入配置孔６ａの径は光透過孔５ｂの径より大きく形成されている。支持部材６の上端側の位置には案内突部６ｂが設けられ、案内突部６ｂは挿入配置孔６ａの中心へ向けて内方に突出されている。尚、案内突部６ｂは周方向に離隔して複数が設けられていてもよい。 The support member 6 is thicker than the base plate 5 and has an insertion arrangement hole 6a penetrating back and forth on the front side of the light transmission hole 5b. The diameter of the insertion arrangement hole 6a is formed to be larger than the diameter of the light transmission hole 5b. A guide protrusion 6b is provided at a position on the upper end side of the support member 6, and the guide protrusion 6b projects inward toward the center of the insertion arrangement hole 6a. A plurality of guide protrusions 6b may be provided apart from each other in the circumferential direction.
　支持部材６における側方の一端部には前方及び左右に開口された配置空間６ｃが形成されている。支持部材６には配置空間６ｃの真下の位置に上方及び側方に開口された挿入空間６ｄが形成され、挿入空間６ｄは配置空間６ｃと連通されている。支持部材６における挿入空間６ｄの前後の部分にはそれぞれ前後に貫通された軸受孔６ｅ、６ｅが形成されている。 An arrangement space 6c opened in the front and left and right is formed at one end on the side of the support member 6. The support member 6 is formed with an insertion space 6d opened upward and laterally at a position directly below the arrangement space 6c, and the insertion space 6d is communicated with the arrangement space 6c. Bearing holes 6e and 6e penetrated in the front and rear are formed in the front and rear portions of the insertion space 6d in the support member 6, respectively.
　カバー３は前後方向を向き外形状が矩形状の覆い面部７と覆い面部７の外周部から後方に突出された周面部８とが一体に形成されて成る。覆い面部７には円形の通過孔７ａが形成されている。周面部８の左右に離隔して位置された部分の後端部にはそれぞれ結合孔８ａ、８ａが形成されている。 The cover 3 is formed by integrally forming a covering surface portion 7 having a rectangular outer shape facing in the front-rear direction and a peripheral surface portion 8 protruding rearward from the outer peripheral portion of the covering surface portion 7. A circular passage hole 7a is formed in the covering surface portion 7. Coupling holes 8a and 8a are formed at the rear end portions of the portions of the peripheral surface portion 8 that are separated from each other on the left and right sides, respectively.
　駆動体４はレンズホルダー９と支持シャフト１０と板バネ１１とアクチュエーター１２を有している（図４、図６及び図７参照）。 The drive body 4 has a lens holder 9, a support shaft 10, a leaf spring 11, and an actuator 12 (see FIGS. 4, 6 and 7).
　レンズホルダー９は、例えば、インサート成形によって各部が一体に形成され、樹脂材料によって形成されたレンズ保持部１３と樹脂材料によって形成されたバネ取付部１４と金属材料によって形成された補強部１５とを有している。 The lens holder 9 has, for example, a lens holding portion 13 formed of a resin material, a spring mounting portion 14 formed of a resin material, and a reinforcing portion 15 formed of a metal material, each of which is integrally formed by insert molding. Have.
　レンズ保持部１３は円環状に形成され、径方向に貫通され後方に開口された被案内溝１３ａを有している。尚、被案内溝１３ａは周方向に離隔して複数が形成されていてもよい。レンズ保持部１３にはレンズ１６又は複数のレンズによって構成されたレンズ群が保持されている。 The lens holding portion 13 is formed in an annular shape and has a guided groove 13a that is penetrated in the radial direction and opened rearward. A plurality of guided grooves 13a may be formed so as to be separated in the circumferential direction. The lens holding portion 13 holds the lens 16 or a lens group composed of a plurality of lenses.
　バネ取付部１４はレンズ保持部１３の外周面から突出され、側方に突出された側突部１７と下斜め側方に突出された傾斜突部１８とがレンズ保持部１３の周方向において連続して設けられている（図６乃至図８参照）。バネ取付部１４の外面は、側突部１７の上側の面である一端面１４ａと、傾斜突部１８の下側の面である他端面１４ｂと、側突部１７の側方（外方）を向く面である側面１４ｃと、傾斜突部１８の斜め下方を向く面である傾斜面１４ｄと、側突部１７から傾斜突部１８に亘って形成された前面１４ｅと、側突部１７から傾斜突部１８に亘って形成された後面１４ｆとを有している。 The spring mounting portion 14 is projected from the outer peripheral surface of the lens holding portion 13, and the lateral protrusion 17 protruding sideways and the inclined protrusion 18 protruding diagonally downward are continuous in the circumferential direction of the lens holding portion 13. (See FIGS. 6 to 8). The outer surfaces of the spring mounting portion 14 are one end surface 14a, which is the upper surface of the side protrusion 17, the other end surface 14b, which is the lower surface of the inclined protrusion 18, and the side (outer side) of the side protrusion 17. From the side surface 14c, which is a surface facing the surface, the inclined surface 14d, which is a surface facing diagonally downward of the inclined protrusion 18, the front surface 14e formed from the side protrusion 17 to the inclined protrusion 18, and the side protrusion 17. It has a rear surface 14f formed over the inclined protrusion 18.
　側突部１７には前後に貫通されたシャフト挿通孔１９が形成されている。シャフト挿通孔１９は支持シャフト１０が挿通される挿通部１９ａと挿通部１９ａのレンズ保持部１３側に連続して形成された余裕部１９ｂとから成る（図７参照）。余裕部１９ｂは上下の幅が挿通部１９ａの上下の幅より大きくされている。 A shaft insertion hole 19 penetrated in the front and rear is formed in the side protrusion 17. The shaft insertion hole 19 includes an insertion portion 19a through which the support shaft 10 is inserted and a margin portion 19b continuously formed on the lens holding portion 13 side of the insertion portion 19a (see FIG. 7). The vertical width of the margin portion 19b is larger than the vertical width of the insertion portion 19a.
　側突部１７の上端部には一対の第１のガイド突部２０、２０が設けられ、側突部１７の下端部には一対の第２のガイド突部２１、２１が設けられている（図６乃至図８参照）。第１のガイド突部２０、２０と第２のガイド突部２１、２１はそれぞれ前後に離隔して位置され、側方における外方に突出する形状に形成されている。第１のガイド突部２０、２０の間には側方を向く位置決め面２０ａが形成され、位置決め面２０ａは側面１４ｃにおける位置決め面２０ａ以外の面より僅かに側方における外方に位置されている。 A pair of first guide protrusions 20 and 20 are provided at the upper end of the side protrusion 17, and a pair of second guide protrusions 21 and 21 are provided at the lower end of the side protrusion 17 (. 6 to 8). The first guide protrusions 20 and 20 and the second guide protrusions 21 and 21 are positioned apart from each other in the front-rear direction, and are formed in a shape that protrudes outward on the side. A positioning surface 20a facing sideways is formed between the first guide protrusions 20 and 20, and the positioning surface 20a is located slightly laterally to the surface other than the positioning surface 20a on the side surface 14c. ..
　傾斜突部１８には前後に貫通され傾斜面１４ｄに開口するＶ字状の溝部１８ａが形成されている。 A V-shaped groove 18a is formed in the inclined protrusion 18 which is penetrated in the front-rear direction and opens in the inclined surface 14d.
　補強部１５は一部がバネ取付部１４に埋め込まれた状態にされ、インサート成形によってレンズ保持部１３及びバネ取付部１４と一体に形成され、バネ取付部１４に結合されている。尚、図６乃至図９には、理解を容易にするために、補強部１５に梨子地を付している。 A part of the reinforcing portion 15 is embedded in the spring mounting portion 14, is formed integrally with the lens holding portion 13 and the spring mounting portion 14 by insert molding, and is coupled to the spring mounting portion 14. In addition, in FIGS. 6 to 9, a pear-skin texture is attached to the reinforcing portion 15 for easy understanding.
　補強部１５は、上下に延び左右方向を向くベース面部１５ａと、ベース面部１５ａにおける上端部の前後両端部からベース面部１５ａに対して直交する同じ方向へ折り曲げられた第１の曲げ面部１５ｂ、１５ｂと、ベース面部１５ａにおける下端寄りの部分の前後両端部からベース面部１５ａに対して直交する同じ方向へ折り曲げられた第２の曲げ面部１５ｃ、１５ｃと、ベース面部１５ａの下端に連続されベース面部１５ａに対して傾斜する傾斜面部１５ｄと、傾斜面部１５ｄの下端に連続されＶ字状に屈曲された受け面部１５ｅと、受け面部１５ｅの下端に連続され受け面部１５ｅに対して屈曲された端面部１５ｆとから成る。 The reinforcing portion 15 includes a base surface portion 15a that extends vertically and faces in the left-right direction, and first bent surface portions 15b and 15b that are bent in the same direction orthogonal to the base surface portion 15a from the front and rear ends of the upper end portion of the base surface portion 15a. The second bent surface portions 15c and 15c bent in the same direction orthogonal to the base surface portion 15a from the front and rear ends of the portion near the lower end of the base surface portion 15a, and the base surface portion 15a continuous with the lower end of the base surface portion 15a. An inclined surface portion 15d that is inclined with respect to the lower end, a receiving surface portion 15e that is continuously bent at the lower end of the inclined surface portion 15d and bent in a V shape, and an end surface portion 15f that is continuous at the lower end of the receiving surface portion 15e and bent with respect to the receiving surface portion 15e. Consists of.
　補強部１５は、ベース面部１５ａが側面１４ｃに対応して位置され、前側の第１の曲げ面部１５ｂと前側の第２の曲げ面部１５ｃとが前面１４ｅに対応して位置され、後側の第１の曲げ面部１５ｂと後側の第２の曲げ面部１５ｃとが後面１４ｆに対応して位置され、傾斜面部１５ｄが傾斜面１４ｄに対応して位置され、受け面部１５ｅが溝部１８ａに対応して位置され、端面部１５ｆが他端面１４ｂに対応して位置されている。 In the reinforcing portion 15, the base surface portion 15a is positioned corresponding to the side surface 14c, the first bending surface portion 15b on the front side and the second bending surface portion 15c on the front side are positioned corresponding to the front surface 14e, and the second bending surface portion 15c on the rear side is located. The bent surface portion 15b of 1 and the second bent surface portion 15c on the rear side are positioned corresponding to the rear surface 14f, the inclined surface portion 15d is positioned corresponding to the inclined surface 14d, and the receiving surface portion 15e corresponds to the groove portion 18a. The end face portion 15f is positioned so as to correspond to the other end face 14b.
　上記したように、レンズホルダー９においては、樹脂材料によって形成されたバネ取付部１４と金属材料によって形成された補強部１５とが一体に形成されているため、補強部１５によってバネ取付部１４が補強される。 As described above, in the lens holder 9, since the spring mounting portion 14 formed of the resin material and the reinforcing portion 15 formed of the metal material are integrally formed, the spring mounting portion 14 is formed by the reinforcing portion 15. It will be reinforced.
　また、レンズホルダー９においては、レンズ保持部１３とバネ取付部１４が樹脂材料によって形成され、補強部１５が金属材料によって形成され、補強部１５がインサート成形によりレンズ保持部１３及びバネ取付部１４と一体に形成されている。 Further, in the lens holder 9, the lens holding portion 13 and the spring mounting portion 14 are formed of a resin material, the reinforcing portion 15 is formed of a metal material, and the reinforcing portion 15 is insert-molded to form the lens holding portion 13 and the spring mounting portion 14. It is formed integrally with.
　従って、補強部１５をバネ取付部１４に結合する作業が不要になり、レンズ駆動装置１における各部の組付工数の低減及び部品点数の削減による製造コストの低減を図ることができる。 Therefore, the work of connecting the reinforcing portion 15 to the spring mounting portion 14 becomes unnecessary, and the manufacturing cost can be reduced by reducing the man-hours for assembling each part in the lens driving device 1 and the number of parts.
　さらに、補強部１５にはベース面部１５ａに対してそれぞれ折り曲げられた第１の曲げ面部１５ｂ、１５ｂと第２の曲げ面部１５ｃ、１５ｃが設けられている。 Further, the reinforcing portion 15 is provided with first bent surface portions 15b and 15b and second bent surface portions 15c and 15c that are bent with respect to the base surface portion 15a, respectively.
　従って、ベース面部１５ａとベース面部１５ａに対してそれぞれ折り曲げられた第１の曲げ面部１５ｂ、１５ｂ及び第２の曲げ面部１５ｃ、１５ｃとがバネ取付部１４に異なる向きで結合されるため、補強部１５によるバネ取付部１４に対する高い補強効果を確保することができる。 Therefore, the first bent surface portions 15b and 15b and the second bent surface portions 15c and 15c bent with respect to the base surface portion 15a and the base surface portion 15a are coupled to the spring mounting portion 14 in different directions, so that the reinforcing portion It is possible to secure a high reinforcing effect on the spring mounting portion 14 by 15.
　また、補強部１５にベース面部１５ａと第１の曲げ面部１５ｂ、１５ｂと第２の曲げ面部１５ｃ、１５ｃが設けられることにより、バネ取付部１４に対する補強部１５の結合面積が大きくなり、補強部１５によるバネ取付部１４に対する一層高い補強効果を確保することができる。 Further, by providing the base surface portion 15a, the first bent surface portions 15b, 15b, and the second bent surface portions 15c, 15c on the reinforcing portion 15, the coupling area of the reinforcing portion 15 with respect to the spring mounting portion 14 becomes large, and the reinforcing portion 15 becomes a reinforcing portion. It is possible to secure a higher reinforcing effect on the spring mounting portion 14 by 15.
　尚、補強部１５においては、第１の曲げ面部１５ｂ、１５ｂと第２の曲げ面部１５ｃ、１５ｃの合計の面積が補強部１５の全体の面積に対して２０％以上にされることが望ましい。 In the reinforcing portion 15, it is desirable that the total area of the first bent surface portions 15b and 15b and the second bent surface portions 15c and 15c is 20% or more of the total area of the reinforcing portion 15.
　支持シャフト１０は、例えば、炭素繊維強化樹脂によって丸軸状に形成されている。尚、支持シャフト１０は高い強度を有し耐熱性及び耐摩耗性の高い所謂スーパーエンジニアリング樹脂によって形成されてもよく、金属によって形成されていてもよい。支持シャフト１０はバネ取付部１４のシャフト挿通孔１９に挿通され（図６及び図７参照）、シャフト挿通孔１９に挿通された状態において軸方向における両端部がそれぞれバネ取付部１４から前後に突出される。 The support shaft 10 is formed in a round shaft shape by, for example, a carbon fiber reinforced resin. The support shaft 10 may be formed of a so-called super engineering resin having high strength and high heat resistance and wear resistance, or may be formed of a metal. The support shaft 10 is inserted into the shaft insertion hole 19 of the spring mounting portion 14 (see FIGS. 6 and 7), and both ends in the axial direction protrude back and forth from the spring mounting portion 14 in the state of being inserted through the shaft insertion hole 19. Will be done.
　板バネ１１は、例えば、金属材料によって形成され、被取付部２２と被支持部２３、２３と押付部２４が一体に形成されて成る。 The leaf spring 11 is formed of, for example, a metal material, and the attached portion 22, the supported portion 23, 23, and the pressing portion 24 are integrally formed.
　被取付部２２は上下に延び左右方向を向く形状に形成されている。被支持部２３、２３は被取付部２２に対して折り曲げられ、被取付部２２の上下方向における中央部の前後両端部から被取付部２２に直交する同じ方向に突出されている。被支持部２３は被取付部２２に連続され左右方向に延びる連結部２５と連結部２５の先端部に対して下方に屈曲された係合部２６とから成るフック状に形成されている。押付部２４は被取付部２２の下端に連続され被取付部２２に対して傾斜されている。 The attached portion 22 is formed in a shape that extends vertically and faces the left-right direction. The supported portions 23, 23 are bent with respect to the mounted portion 22, and project from both front and rear ends of the central portion in the vertical direction of the mounted portion 22 in the same direction orthogonal to the mounted portion 22. The supported portion 23 is formed in a hook shape including a connecting portion 25 that is continuous with the mounted portion 22 and extends in the left-right direction and an engaging portion 26 that is bent downward with respect to the tip end portion of the connecting portion 25. The pressing portion 24 is continuous with the lower end of the mounted portion 22 and is inclined with respect to the mounted portion 22.
　尚、上記には、被支持部２３がフック状に形成された例を示したが、被支持部２３は先端部がＵ字状に形成されていてもよい。 Although the example in which the supported portion 23 is formed in a hook shape is shown above, the tip portion of the supported portion 23 may be formed in a U shape.
　板バネ１１は被取付部２２に対して押付部２４が弾性変形可能にされている。また、板バネ１１は被取付部２２自身が厚み方向において弾性変形可能にされている。 The leaf spring 11 has a pressing portion 24 elastically deformable with respect to the attached portion 22. Further, the leaf spring 11 is made so that the attached portion 22 itself can be elastically deformed in the thickness direction.
　アクチュエーター１２は、例えば、圧電素子を用いた超音波モーターであり、前後方向が軸方向にされた駆動軸２７と駆動軸２７の軸方向における一端に連続された素子部２７ａと錘部２８とを有している。駆動軸２７は、例えば、炭素繊維強化樹脂のように高い強度と高い摺動性を有する材料によって形成されている。素子部２７ａは圧電セラミックと内部電極とが交互に積層されて構成され、電圧の印加により膨張及び収縮されて振動し駆動軸２７に対する前後方向への駆動力を生じる。 The actuator 12 is, for example, an ultrasonic motor using a piezoelectric element, and has a drive shaft 27 whose front-rear direction is axially oriented, and an element portion 27a and a weight portion 28 which are continuous at one end in the axial direction of the drive shaft 27. Have. The drive shaft 27 is made of a material having high strength and high slidability, such as carbon fiber reinforced resin. The element portion 27a is formed by alternately laminating piezoelectric ceramics and internal electrodes, and is expanded and contracted by application of a voltage to vibrate and generate a driving force in the front-rear direction with respect to the drive shaft 27.
　＜レンズ駆動装置の組付＞
　上記のように構成されたレンズ駆動装置１は、以下のようにして各部が組み付けられる。 <Assembly of lens drive device>
Each part of the lens driving device 1 configured as described above is assembled as follows.
　先ず、ケース２の支持部材６にレンズ１６を保持するレンズホルダー９が配置された状態において、アクチュエーター１２が支持部材６に取り付けられる。このときレンズホルダー９は、レンズ保持部１３が挿入配置孔６ａに挿入されて配置され、バネ取付部１４と補強部１５が配置空間６ｃと挿入空間６ｄに配置される。また、レンズホルダー９の被案内溝１３ａに支持部材６の案内突部６ｂが挿入される。 First, the actuator 12 is attached to the support member 6 in a state where the lens holder 9 for holding the lens 16 is arranged on the support member 6 of the case 2. At this time, the lens holder 9 is arranged by inserting the lens holding portion 13 into the insertion arrangement hole 6a, and the spring attachment portion 14 and the reinforcing portion 15 are arranged in the arrangement space 6c and the insertion space 6d. Further, the guide protrusion 6b of the support member 6 is inserted into the guided groove 13a of the lens holder 9.
　アクチュエーター１２は駆動軸２７がベース板５の後方から錘配置孔５ｃを経て軸受孔６ｅ、６ｅに挿入されて支持部材６に取り付けられ、錘部２８が錘配置孔５ｃに配置される。アクチュエーター１２は駆動軸２７の一部が支持部材６に接着等によって固定されてもよい。このとき駆動軸２７は一部が補強部１５の受け面部１５ｅに挿入される。 The actuator 12 is attached to the support member 6 by inserting the drive shaft 27 from the rear of the base plate 5 into the bearing holes 6e and 6e via the weight arrangement holes 5c, and the weight portion 28 is arranged in the weight arrangement holes 5c. A part of the drive shaft 27 of the actuator 12 may be fixed to the support member 6 by adhesion or the like. At this time, a part of the drive shaft 27 is inserted into the receiving surface portion 15e of the reinforcing portion 15.
　次に、バネ取付部１４に板バネ１１が組み付けられる。板バネ１１は被取付部２２が第１のガイド突部２０、２０と第２のガイド突部２１、２１に案内されて板バネ１１に組み付けられる。板バネ１１は、被取付部２２の一端部（上端部）２２ａが第１のガイド突部２０、２０の間に形成された位置決め面２０ａに押し当てられると共に押付部２４がアクチュエーター１２の駆動軸２７に押し当てられ、被取付部２２が厚み方向において補強部１５のベース面部１５ａに対向して位置される。 Next, the leaf spring 11 is assembled to the spring mounting portion 14. The leaf spring 11 is assembled to the leaf spring 11 by guiding the attached portion 22 to the first guide protrusions 20 and 20 and the second guide protrusions 21 and 21. In the leaf spring 11, one end (upper end) 22a of the attached portion 22 is pressed against the positioning surface 20a formed between the first guide protrusions 20, 20 and the pressing portion 24 is the drive shaft of the actuator 12. It is pressed against 27, and the attached portion 22 is positioned so as to face the base surface portion 15a of the reinforcing portion 15 in the thickness direction.
　また、板バネ１１は被支持部２３、２３がシャフト挿通孔１９の挿通部１９ａを閉塞せず余裕部１９ｂの略全体を係合部２６が閉塞した状態でそれぞれバネ取付部１４の前面１４ｅと後面１４ｆに対向して位置される。このとき板バネ１１の被取付部２２とバネ取付部１４の側面１４ｃとの間に一定の隙間Ｈが形成される（図７参照）。 Further, in the leaf spring 11, the supported portions 23 and 23 do not block the insertion portion 19a of the shaft insertion hole 19, and the engaging portion 26 closes substantially the entire margin portion 19b, respectively, with the front surface 14e of the spring mounting portion 14. It is positioned so as to face the rear surface 14f. At this time, a constant gap H is formed between the mounted portion 22 of the leaf spring 11 and the side surface 14c of the spring mounting portion 14 (see FIG. 7).
　次いで、支持シャフト１０がレンズホルダー９のバネ取付部１４に形成されたシャフト挿通孔１９の挿通部１９ａに挿通される。このとき、上記したように、支持シャフト１０の軸方向における両端部がそれぞれバネ取付部１４から前後に突出される。 Next, the support shaft 10 is inserted into the insertion portion 19a of the shaft insertion hole 19 formed in the spring attachment portion 14 of the lens holder 9. At this time, as described above, both ends of the support shaft 10 in the axial direction are projected back and forth from the spring mounting portions 14, respectively.
　支持シャフト１０がシャフト挿通孔１９に挿通されることにより、支持シャフト１０の軸方向における両端部がそれぞれ板バネ１１の被支持部２３、２３に係合される。このとき支持シャフト１０のシャフト挿通孔１９への挿通は板バネ１１を変形させることなく行うことが可能であるため、板バネ１１に塑性変形が生じない。 By inserting the support shaft 10 into the shaft insertion hole 19, both ends of the support shaft 10 in the axial direction are engaged with the supported portions 23 and 23 of the leaf spring 11, respectively. At this time, since the support shaft 10 can be inserted into the shaft insertion hole 19 without deforming the leaf spring 11, the leaf spring 11 is not plastically deformed.
　被支持部２３、２３は係合部２６、２６における被取付部２２側の縁部２６ａ、２６ａと連結部２５における係合部２６、２６側の縁部２５ａ、２５ａとが支持シャフト１０に係合される。被支持部２３、２３が支持シャフト１０に係合されることにより、板バネ１１が支持シャフト１０に支持され板バネ１１のバネ取付部１４からの脱落が防止される。　 In the supported portions 23, 23, the edge portions 26a, 26a on the attached portion 22 side of the engaging portions 26, 26 and the engaging portions 26, 26 side edge portions 25a, 25a of the connecting portion 25 are engaged with the support shaft 10. Will be combined. By engaging the supported portions 23, 23 with the support shaft 10, the leaf spring 11 is supported by the support shaft 10 and the leaf spring 11 is prevented from falling off from the spring mounting portion 14.
　上記のように被支持部２３、２３が支持シャフト１０におけるレンズホルダー９から突出された部分に支持されることにより、被支持部２３、２３がレンズホルダー９の外側に位置されるため、被支持部２３、２３を視認した状態で支持シャフト１０に支持させることが可能になり、被支持部２３、２３を支持シャフト１０に容易かつ確実に支持させることができる。 Since the supported portions 23, 23 are supported by the portion of the support shaft 10 protruding from the lens holder 9 as described above, the supported portions 23, 23 are located outside the lens holder 9, and thus are supported. It is possible to support the supported portions 23 and 23 on the support shaft 10 while visually recognizing the portions 23 and 23, and the supported portions 23 and 23 can be easily and surely supported by the support shaft 10.
　また、被支持部２３、２３間の距離が大きくなるため、被支持部２３、２３を支持シャフト１０に安定した状態で支持させることができる。 Further, since the distance between the supported portions 23 and 23 becomes large, the supported portions 23 and 23 can be supported by the support shaft 10 in a stable state.
　尚、支持シャフト１０の挿通部１９ａへの挿通に際し、被支持部２３、２３のシャフト挿通孔１９に対する位置によっては支持シャフト１０を挿通部１９ａに挿通し難い場合が生じる可能性があるが、板バネ１１の被取付部２２とバネ取付部１４の側面１４ｃとの間には隙間Ｈが形成されているため、隙間Ｈの分だけ、被取付部２２を弾性変形させてバネ取付部１４の側面１４ｃに押し付けることが可能である（図９参照）。被取付部２２に力Ｑを付与して隙間Ｈの分、被取付部２２を弾性変形させると、被取付部２３が左右方向においてレンズ保持部１３側に変位するため、余裕部１９ｂにおける係合部２６による閉塞部分が小さくなる。従って、シャフト挿通孔１９における支持シャフト１０の挿入が可能な部分が大きくなり、支持シャフト１０のシャフト挿通孔１９への挿通を容易に行うことができる。 When inserting the support shaft 10 into the insertion portion 19a, it may be difficult to insert the support shaft 10 into the insertion portion 19a depending on the positions of the supported portions 23 and 23 with respect to the shaft insertion hole 19. Since a gap H is formed between the mounted portion 22 of the spring 11 and the side surface 14c of the spring mounting portion 14, the mounted portion 22 is elastically deformed by the amount of the gap H to elastically deform the side surface of the spring mounting portion 14. It can be pressed against 14c (see FIG. 9). When a force Q is applied to the attached portion 22 to elastically deform the attached portion 22 by the amount of the gap H, the attached portion 23 is displaced toward the lens holding portion 13 in the left-right direction, so that the engagement portion 19b is engaged. The closed portion by the portion 26 becomes smaller. Therefore, the portion of the shaft insertion hole 19 into which the support shaft 10 can be inserted becomes large, and the support shaft 10 can be easily inserted into the shaft insertion hole 19.
　上記した隙間Ｈの分の被取付部２２の変形は弾性変形であるため、隙間Ｈの分、被取付部２２を変形させても被取付部２２が塑性変形することはない。また、被取付部２２に対して付与されていた力Ｑが取り除かれると、隙間Ｈの分、被取付部２２が弾性復帰される。被取付部２２が弾性復帰されることにより、係合部２６が左右方向においてレンズ保持部１３から離隔する方向へ変位されるため、係合部２６の縁部２６ａが支持シャフト１０に押し付けられると共に支持シャフト１０が挿通部１９ａを形成する壁面１９ｃに押し付けられ、板バネ１１が支持シャフト１０に安定した状態で支持される。 Since the deformation of the attached portion 22 due to the gap H described above is elastic deformation, the attached portion 22 is not plastically deformed even if the attached portion 22 is deformed by the amount of the gap H. Further, when the force Q applied to the attached portion 22 is removed, the attached portion 22 is elastically restored by the amount of the gap H. When the attached portion 22 is elastically restored, the engaging portion 26 is displaced in the left-right direction in a direction away from the lens holding portion 13, so that the edge portion 26a of the engaging portion 26 is pressed against the support shaft 10 and at the same time. The support shaft 10 is pressed against the wall surface 19c forming the insertion portion 19a, and the leaf spring 11 is stably supported by the support shaft 10.
　また、板バネ１１は被支持部２３、２３が支持シャフト１０に支持され押付部２４が弾性変形されて付勢力が生じた状態でアクチュエーター１２の駆動軸２７に押し付けられるため、被取付部２２の一端部２２ａが位置決め面２０ａに押し付けられ、バネ取付部１４には板バネ１１の被取付部２２から力Ｆが付与される（図７参照）。 Further, the leaf spring 11 is pressed against the drive shaft 27 of the actuator 12 in a state where the supported portions 23 and 23 are supported by the support shaft 10 and the pressing portion 24 is elastically deformed to generate an urging force. One end portion 22a is pressed against the positioning surface 20a, and a force F is applied to the spring mounting portion 14 from the mounted portion 22 of the leaf spring 11 (see FIG. 7).
　このようにバネ取付部１４には板バネ１１の被取付部２２から力Ｆが付与されるが、補強部１５には被取付部２２に対向するベース面部１５ａが設けられている。 In this way, the force F is applied to the spring mounting portion 14 from the mounted portion 22 of the leaf spring 11, but the reinforcing portion 15 is provided with the base surface portion 15a facing the mounted portion 22.
　従って、補強部１５に設けられたベース面部１５ａが板バネ１１に対向した状態でバネ取付部１４に結合されているため、板バネ１１からレンズホルダー９に付与される力によるバネ取付部１４の変形を効率的に抑制することができる。 Therefore, since the base surface portion 15a provided on the reinforcing portion 15 is coupled to the spring mounting portion 14 in a state of facing the leaf spring 11, the spring mounting portion 14 due to the force applied from the leaf spring 11 to the lens holder 9 Deformation can be suppressed efficiently.
　また、板バネ１１は押付部２４が駆動軸２７に押し付けられ被取付部２２の一端部２２ａが位置決め面２０ａに押し付けられるため、被支持部２３、２３には左右方向においてレンズ保持部１３から離隔する方向への力Ｐが付与される。従って、係合部２６の縁部２６ａと縁部２５ａが支持シャフト１０に押し付けられると共に支持シャフト１０が挿通部１９ａを形成する壁面１９ｃと壁面１９ｄに押し付けられ易くなり、板バネ１１の支持シャフト１０に対する安定した支持状態を確保することができる。 Further, since the pressing portion 24 of the leaf spring 11 is pressed against the drive shaft 27 and one end portion 22a of the attached portion 22 is pressed against the positioning surface 20a, the supported portions 23 and 23 are separated from the lens holding portion 13 in the left-right direction. A force P in the direction of the lens is applied. Therefore, the edge portion 26a and the edge portion 25a of the engaging portion 26 are pressed against the support shaft 10, and the support shaft 10 is easily pressed against the wall surface 19c and the wall surface 19d forming the insertion portion 19a, so that the support shaft 10 of the leaf spring 11 is easily pressed. It is possible to secure a stable support state for.
　上記したように、板バネ１１が支持シャフト１０に支持された状態においては、押付部２４が被支持部２３に対して弾性変形されて駆動軸２７に押し付けられ、被取付部２２の一端部２２ａが位置決め面２０ａに押し付けられる。押付部２４が弾性変形されて駆動軸２７に押し付けられることにより、駆動軸２７は押付部２４の付勢力によって補強部１５の受け面部１５ｅに押し付けられる。 As described above, in the state where the leaf spring 11 is supported by the support shaft 10, the pressing portion 24 is elastically deformed with respect to the supported portion 23 and pressed against the drive shaft 27, and one end portion 22a of the attached portion 22 Is pressed against the positioning surface 20a. When the pressing portion 24 is elastically deformed and pressed against the drive shaft 27, the drive shaft 27 is pressed against the receiving surface portion 15e of the reinforcing portion 15 by the urging force of the pressing portion 24.
　このように補強部１５には押付部２４によって押し付けられるアクチュエーター１２を受ける受け面部１５ｅが設けられている。 In this way, the reinforcing portion 15 is provided with a receiving surface portion 15e that receives the actuator 12 pressed by the pressing portion 24.
　従って、アクチュエーター１２を介してバネ取付部１３に付与される押付力が補強部１５の一部によって受けられるため、板バネ１１による押付力によるバネ取付部１３の変形を抑制することができると共にアクチュエーター１２を板バネ１１によって安定した状態で押し付けることができる。 Therefore, since the pressing force applied to the spring mounting portion 13 via the actuator 12 is received by a part of the reinforcing portion 15, the deformation of the spring mounting portion 13 due to the pressing force by the leaf spring 11 can be suppressed and the actuator can be suppressed. 12 can be pressed in a stable state by the leaf spring 11.
　板バネ１１が支持シャフト１０に支持された状態においては、上記したように、板バネ１１の被取付部２２とバネ取付部１４の側面１４ｃとの間に一定の隙間Ｈが形成される。 When the leaf spring 11 is supported by the support shaft 10, a constant gap H is formed between the mounted portion 22 of the leaf spring 11 and the side surface 14c of the spring mounting portion 14 as described above.
　このように板バネ１１の被取付部２２とバネ取付部１４の側面１４ｃとの間に隙間Ｈが形成されるため、板バネ１１の一部とバネ取付部１４の一部とが非接触の状態で板バネ１１がバネ取付部１４に取り付けられ、板バネ１１とバネ取付部１４の接触による粉塵の発生を抑制することができる。 Since the gap H is formed between the mounted portion 22 of the leaf spring 11 and the side surface 14c of the spring mounting portion 14, a part of the leaf spring 11 and a part of the spring mounting portion 14 are not in contact with each other. In this state, the leaf spring 11 is attached to the spring mounting portion 14, and it is possible to suppress the generation of dust due to the contact between the leaf spring 11 and the spring mounting portion 14.
　また、隙間Ｈによりバネ取付部１４と板バネ１１の被取付部２２の少なくとも一部が離隔して位置されるため、バネ取付部１４の存在が板バネ１１の弾性力に影響を及ぼし難くなり、板バネ１１の安定した弾性力を確保することができる。 Further, since at least a part of the spring mounting portion 14 and the mounted portion 22 of the leaf spring 11 is separated from each other by the gap H, the presence of the spring mounting portion 14 is less likely to affect the elastic force of the leaf spring 11. , The stable elastic force of the leaf spring 11 can be secured.
　上記のように、支持シャフト１０に板バネ１１が支持された状態において、ケース２とカバー３を結合することによりレンズ駆動装置１の組付が完了される。ケース２とカバー３の結合は、ケース２の結合用突部５ａ、５ａがそれぞれカバー３の結合孔８ａ、８ａに挿入されて係合されることにより行われる。 As described above, the assembly of the lens driving device 1 is completed by connecting the case 2 and the cover 3 in the state where the leaf spring 11 is supported by the support shaft 10. The case 2 and the cover 3 are joined by inserting and engaging the coupling protrusions 5a and 5a of the case 2 into the coupling holes 8a and 8a of the cover 3, respectively.
　上記のように組み立てられたレンズ駆動装置１において、撮影時に取り込まれる被写体の光はカバー３の通過孔７ａを介してレンズ１６に入射され、レンズ１６に入射された光がケース２の光透過孔５ｂを透過されて撮像素子に入射される。このときアクチュエーター１２からレンズホルダー９に伝達される駆動力によってレンズホルダー９とレンズ１６が一体になって光軸方向へ移動される。このとき支持部材６の案内突部６ｂによってレンズホルダー９の被案内溝１３ａが案内されレンズホルダー９とレンズ１６が光軸方向へ高い精度で移動され、例えば、フォーカシングやズーミングが行われる。 In the lens driving device 1 assembled as described above, the light of the subject captured at the time of shooting is incident on the lens 16 through the passage hole 7a of the cover 3, and the light incident on the lens 16 is the light transmission hole of the case 2. It is transmitted through 5b and incident on the image sensor. At this time, the lens holder 9 and the lens 16 are integrally moved in the optical axis direction by the driving force transmitted from the actuator 12 to the lens holder 9. At this time, the guided groove 13a of the lens holder 9 is guided by the guide protrusion 6b of the support member 6, and the lens holder 9 and the lens 16 are moved with high accuracy in the optical axis direction, for example, focusing and zooming are performed.
　尚、レンズ駆動装置１には駆動体４を光軸方向に直交する方向へ変位させ、像ぶれの補正を行うぶれ補正機構が設けられていてもよい。 Note that the lens driving device 1 may be provided with a blur correction mechanism that corrects image blur by displacing the driving body 4 in a direction orthogonal to the optical axis direction.
　尚、上記には、シャフト挿通孔１９に挿通された支持シャフト１０の軸方向における両端部がそれぞれバネ取付部１４から前後に突出された例を示したが、支持シャフト１０がバネ取付部１４から突出されない状態で被支持部２３、２３が支持シャフト１０に支持される構成にすることも可能である（図１０参照）。この場合には、例えば、バネ取付部１４にレンズ１６と反対側に開口された挿入穴２９、２９が前後に離隔して形成され、挿入穴２９、２９がシャフト挿通孔１９に連通される。被支持部２３、２３はそれぞれ挿入穴２９、２９に挿入された状態で支持シャフト１０の軸方向における両端寄りの部分に支持される。 In the above, both ends of the support shaft 10 inserted into the shaft insertion hole 19 in the axial direction are projected back and forth from the spring mounting portion 14, but the support shaft 10 is projected from the spring mounting portion 14. It is also possible to configure the supported portions 23, 23 to be supported by the support shaft 10 in a state where they are not projected (see FIG. 10). In this case, for example, insertion holes 29, 29 opened in the spring mounting portion 14 on the opposite side of the lens 16 are formed so as to be separated from each other in the front-rear direction, and the insertion holes 29, 29 are communicated with the shaft insertion hole 19. The supported portions 23, 23 are supported by portions closer to both ends in the axial direction of the support shaft 10 in a state of being inserted into the insertion holes 29, 29, respectively.
　このように被支持部２３、２３がそれぞれ挿入穴２９、２９に挿入された状態で支持シャフト１０の両端寄りの部分に支持されるため、支持シャフト１０がバネ取付部１４から前後に突出されない状態で被支持部２３、２３を支持シャフト１０に支持させることが可能になる。従って、支持シャフト１０がバネ取付部１４から前後に突出されないため、レンズ駆動装置１の光軸方向における小型化を図ることが可能になる。 Since the supported portions 23 and 23 are supported by the portions near both ends of the support shaft 10 in the state of being inserted into the insertion holes 29 and 29, respectively, the support shaft 10 is not projected back and forth from the spring mounting portion 14. The supported portions 23, 23 can be supported by the support shaft 10. Therefore, since the support shaft 10 does not protrude back and forth from the spring mounting portion 14, it is possible to reduce the size of the lens driving device 1 in the optical axis direction.
　＜まとめ＞
　以上に記載した通り、レンズ駆動装置１にあっては、レンズ１６を保持するレンズホルダー９と、レンズホルダー９とレンズ１６を光軸方向へ移動させるアクチュエーター１２と、シャフト挿通孔１９に挿通される支持シャフト１０と、支持シャフト１０に支持される被支持部２３と付勢力によってアクチュエーター１２をレンズホルダー９に押し付ける押付部２４とを有する板バネ１１とが設けられている。 <Summary>
As described above, in the lens driving device 1, the lens holder 9 for holding the lens 16, the actuator 12 for moving the lens holder 9 and the lens 16 in the optical axis direction, and the shaft insertion hole 19 are inserted. A leaf spring 11 having a support shaft 10, a supported portion 23 supported by the support shaft 10, and a pressing portion 24 that presses the actuator 12 against the lens holder 9 by an urging force is provided.
　従って、支持シャフト１０がレンズホルダー９とは別部材として設けられ、板バネ１１をレンズホルダー９に組み付けた状態で支持シャフト１０をシャフト挿通孔１９に挿通することが可能である。これにより、板バネ１１に塑性変形が生じず、アクチュエーター１２に対する板バネ１１による安定した保持状態を確保してアクチュエーター１２からレンズホルダー９に対して安定した駆動力が伝達されるようにすることができる。 Therefore, the support shaft 10 is provided as a separate member from the lens holder 9, and the support shaft 10 can be inserted into the shaft insertion hole 19 with the leaf spring 11 assembled to the lens holder 9. As a result, the leaf spring 11 is not plastically deformed, and a stable holding state of the leaf spring 11 with respect to the actuator 12 is ensured so that a stable driving force is transmitted from the actuator 12 to the lens holder 9. it can.
　また、レンズホルダー９にレンズ１６を保持する環状のレンズ保持部１３と板バネ１１が取り付けられるバネ取付部１４とバネ取付部１４に結合された補強部１５とが設けられている。 Further, the lens holder 9 is provided with an annular lens holding portion 13 for holding the lens 16, a spring mounting portion 14 to which the leaf spring 11 is mounted, and a reinforcing portion 15 coupled to the spring mounting portion 14.
　従って、補強部１５によってバネ取付部１４が補強されるため、板バネ１１からレンズホルダー９に付与される力によるバネ取付部１４の変形が抑制され、板バネ１１のバネ取付部１４に対する安定した取付状態を確保することができる。 Therefore, since the spring mounting portion 14 is reinforced by the reinforcing portion 15, the deformation of the spring mounting portion 14 due to the force applied from the leaf spring 11 to the lens holder 9 is suppressed, and the leaf spring 11 is stable with respect to the spring mounting portion 14. The mounted state can be secured.
　さらにまた、補強部１５によってレンズホルダー９の全体の剛性が高くなるため、レンズホルダー９の各部の厚みを厚くして剛性を高める必要がなく、レンズホルダー９の小型化を図ることができる。 Furthermore, since the overall rigidity of the lens holder 9 is increased by the reinforcing portion 15, it is not necessary to increase the thickness of each portion of the lens holder 9 to increase the rigidity, and the lens holder 9 can be miniaturized.
　加えて、支持シャフト１０が炭素繊維強化樹脂によって形成されることにより、支持シャフト１０が高い強度と高い耐振動性を有するため、板バネ１１の支持シャフト１０に対する安定した支持状態を確保することができると共にアクチュエーター１２の駆動時に生じる超音波振動による所謂音鳴きと称される異音の発生を抑制することができる。 In addition, since the support shaft 10 is formed of carbon fiber reinforced resin, the support shaft 10 has high strength and high vibration resistance, so that a stable support state of the leaf spring 11 with respect to the support shaft 10 can be ensured. At the same time, it is possible to suppress the generation of abnormal noise called so-called squealing due to ultrasonic vibration generated when the actuator 12 is driven.
　＜撮像装置の一実施形態＞
　以下に、本技術撮像装置の一実施形態の構成例について説明する（図１０参照）。 <One Embodiment of the Imaging Device>
Hereinafter, a configuration example of an embodiment of the imaging device of the present technology will be described (see FIG. 10).
　撮像装置１００（４００、５００）は、撮像機能を担うカメラブロック９０と、撮影された画像信号のアナログ－デジタル変換等の信号処理を行うカメラ信号処理部９１と、画像信号の記録再生処理を行う画像処理部９２とを有している。また、撮像装置１００は、撮影された画像等を表示する表示部９３と、メモリー９９への画像信号の書込及び読出を行うＲ／Ｗ（リーダ／ライタ）９４と、撮像装置１００の全体を制御するＣＰＵ（Central Processing Unit）９５と、カメラブロック９０に配置されたレンズの駆動を制御するレンズ駆動制御部９６と、ユーザーによって所要の操作が行われる各種のスイッチ等の操作部９７とを有している。 The image pickup apparatus 100 (400, 500) performs recording / reproduction processing of an image signal, a camera block 90 that performs an imaging function, a camera signal processing unit 91 that performs signal processing such as analog-to-digital conversion of a captured image signal, and an image signal processing unit 91. It has an image processing unit 92. Further, the image pickup device 100 includes a display unit 93 for displaying a captured image and the like, an R / W (reader / writer) 94 for writing and reading an image signal to the memory 99, and the entire image pickup device 100. It has a CPU (Central Processing Unit) 95 for control, a lens drive control unit 96 for controlling the drive of a lens arranged in a camera block 90, and an operation unit 97 for various switches and the like in which a user performs a required operation. doing.
　カメラブロック９０はレンズ駆動装置１を有する部分であり、交換レンズ２００やレンズ鏡筒５０２であってもよい。 The camera block 90 is a portion having the lens driving device 1, and may be an interchangeable lens 200 or a lens barrel 502.
　撮像装置１００には、カメラブロック９０によって取り込まれた光学像を電気的信号に変換するＣＣＤやＣＭＯＳ等の撮像素子９８が設けられている。 The image pickup device 100 is provided with an image pickup device 98 such as a CCD or CMOS that converts an optical image captured by the camera block 90 into an electrical signal.
　カメラ信号処理部９１は、撮像素子９８からの出力信号に対するデジタル信号への変換、ノイズ除去、画質補正、輝度・色差信号への変換等の各種の信号処理を行う。 The camera signal processing unit 91 performs various signal processing such as conversion of the output signal from the image pickup element 98 into a digital signal, noise removal, image quality correction, and conversion into a luminance / color difference signal.
　画像処理部９２は、所定の画像データフォーマットに基づく画像信号の圧縮符号化・伸張復号化処理や解像度等のデータ仕様の変換処理等を行う。 The image processing unit 92 performs compression coding / decompression decoding processing of an image signal based on a predetermined image data format, conversion processing of data specifications such as resolution, and the like.
　表示部９３はユーザーの操作部９７に対する操作状態や撮影した画像等の各種のデータを表示する機能を有している。尚、撮像装置１００においては、表示部９３が設けられていなくてもよく、撮影された画像データが他の表示装置に送出されて画像が表示されるように構成されていてもよい。 The display unit 93 has a function of displaying various data such as an operation state of the user's operation unit 97 and a captured image. The image pickup device 100 may not be provided with the display unit 93, and may be configured so that the captured image data is sent to another display device to display the image.
　Ｒ／Ｗ９４は、画像処理部９２によって符号化された画像データのメモリー９９への書込及びメモリー９９に記録された画像データの読出を行う。 The R / W 94 writes the image data encoded by the image processing unit 92 to the memory 99 and reads the image data recorded in the memory 99.
　ＣＰＵ９５は、撮像装置１００に設けられた各回路ブロックを制御する制御処理部として機能し、操作部９７からの指示入力信号等に基づいて各回路ブロックを制御する。 The CPU 95 functions as a control processing unit that controls each circuit block provided in the image pickup apparatus 100, and controls each circuit block based on an instruction input signal or the like from the operation unit 97.
　レンズ駆動制御部９６は、ＣＰＵ９５からの制御信号に基づいてレンズを移動させる駆動源を制御する。 The lens drive control unit 96 controls a drive source for moving the lens based on a control signal from the CPU 95.
　操作部９７はユーザーによる操作に応じた指示入力信号をＣＰＵ９５に対して出力する。 The operation unit 97 outputs an instruction input signal corresponding to the operation by the user to the CPU 95.
　メモリー９９は、例えば、Ｒ／Ｗ９４に接続されたスロットに対して着脱可能な半導体メモリー又は撮像装置１００の内部に予め組み込まれている半導体メモリーである。 The memory 99 is, for example, a semiconductor memory that can be attached to and detached from a slot connected to the R / W 94, or a semiconductor memory that is preliminarily incorporated inside the image pickup apparatus 100.
　以下に、撮像装置１００における動作を説明する。 The operation of the image pickup apparatus 100 will be described below.
　撮影の待機状態では、ＣＰＵ９５による制御の下で、撮影された画像信号がカメラ信号処理部９１を介して表示部９３に出力され、カメラスルー画像として表示される。また、操作部９７からの指示入力信号が入力されると、ＣＰＵ９５がレンズ駆動制御部９６に制御信号を出力し、レンズ駆動制御部９６の制御に基づいてレンズが移動される。 In the shooting standby state, under the control of the CPU 95, the shot image signal is output to the display unit 93 via the camera signal processing unit 91 and displayed as a camera-through image. When the instruction input signal from the operation unit 97 is input, the CPU 95 outputs a control signal to the lens drive control unit 96, and the lens is moved based on the control of the lens drive control unit 96.
　操作部９７からの指示入力信号により撮影動作が行われると、撮影された画像信号がカメラ信号処理部９１から画像処理部９２に出力されて圧縮符号化処理され、所定のデータフォーマットのデジタルデータに変換される。変換されたデータはＲ／Ｗ９４に出力され、メモリー９９に書き込まれる。 When the shooting operation is performed by the instruction input signal from the operation unit 97, the shot image signal is output from the camera signal processing unit 91 to the image processing unit 92, compressed and encoded, and converted into digital data in a predetermined data format. Will be converted. The converted data is output to R / W 94 and written to memory 99.
　メモリー９９に記録された画像データを再生する場合には、操作部９７に対する操作に応じて、Ｒ／Ｗ９４によってメモリー９９から所定の画像データが読み出され、画像処理部９２によって伸張復号化処理が行われた後に、再生画像信号が表示部９３に出力されて再生画像が表示される。 When the image data recorded in the memory 99 is reproduced, the R / W 94 reads the predetermined image data from the memory 99 in response to the operation on the operation unit 97, and the image processing unit 92 performs the decompression / decoding process. After that, the reproduced image signal is output to the display unit 93 and the reproduced image is displayed.
　尚、本技術において、「撮像」とは、撮像素子９８による取り込まれた光を電気信号に変換する光電変換処理から、カメラ信号処理部９１による撮像素子９８からの出力信号に対するデジタル信号への変換、ノイズ除去、画質補正、輝度・色差信号への変換等の処理、画像処理部９２による所定の画像データフォーマットに基づく画像信号の圧縮符号化・伸張復号化処理や解像度等のデータ仕様の変換処理、Ｒ／Ｗ９４によるメモリー９９への画像信号の書込処理までの一連の処理の一部のみ、または全てを含む処理のことを言う。 In the present technology, "imaging" means converting the photoelectric conversion process for converting the light captured by the image pickup element 98 into an electric signal to the digital signal for the output signal from the image pickup element 98 by the camera signal processing unit 91. , Noise removal, image quality correction, conversion to brightness / color difference signals, etc., compression coding / decompression decoding processing of image signals based on a predetermined image data format by the image processing unit 92, conversion processing of data specifications such as resolution, etc. , A process including only a part or all of a series of processes up to the process of writing an image signal to the memory 99 by the R / W 94.
　即ち、「撮像」とは、撮像素子９８による取り込まれた光を電気信号に変換する光電変換処理のみを指してもよく、撮像素子９８による取り込まれた光を電気信号に変換する光電変換処理からカメラ信号処理部９１による撮像素子９８からの出力信号に対するデジタル信号への変換、ノイズ除去、画質補正、輝度・色差信号への変換等の処理までを指してもよく、撮像素子９８による取り込まれた光を電気信号に変換する光電変換処理からカメラ信号処理部９１による撮像素子９８からの出力信号に対するデジタル信号への変換、ノイズ除去、画質補正、輝度・色差信号への変換等の処理を経て、画像処理部９２による所定の画像データフォーマットに基づく画像信号の圧縮符号化・伸張復号化処理や解像度等のデータ仕様の変換処理までを指してもよく、撮像素子９８による取り込まれた光を電気信号に変換する光電変換処理からカメラ信号処理部９１による撮像素子９８からの出力信号に対するデジタル信号への変換、ノイズ除去、画質補正、輝度・色差信号への変換等の処理、及び画像処理部９２による所定の画像データフォーマットに基づく画像信号の圧縮符号化・伸張復号化処理や解像度等のデータ仕様の変換処理を経て指してもよく、Ｒ／Ｗ９４によるメモリー９９への画像信号の書込処理までを指してもよい。 That is, "imaging" may refer only to the photoelectric conversion process for converting the light captured by the image pickup element 98 into an electric signal, and from the photoelectric conversion process for converting the light captured by the image pickup element 98 into an electric signal. It may also refer to processing such as conversion of the output signal from the image pickup element 98 by the camera signal processing unit 91 into a digital signal, noise removal, image quality correction, and conversion into a brightness / color difference signal, and is captured by the image pickup element 98. After the photoelectric conversion process for converting light into an electric signal, the camera signal processing unit 91 converts the output signal from the image pickup element 98 into a digital signal, noise removal, image quality correction, conversion into a brightness / color difference signal, and the like. It may also refer to compression coding / decompression decoding processing of an image signal based on a predetermined image data format by the image processing unit 92 and conversion processing of data specifications such as resolution, and the light captured by the image pickup element 98 is an electric signal. The photoelectric conversion process for converting to a digital signal by the camera signal processing unit 91 to a digital signal for the output signal from the image pickup element 98, noise removal, image quality correction, conversion to a brightness / color difference signal, and the like, and the image processing unit 92. It may be pointed out through compression coding / decompression decoding processing of an image signal based on a predetermined image data format and conversion processing of data specifications such as resolution, and even writing processing of an image signal to the memory 99 by R / W 94. You may point.
　上記の処理において各処理の順番は適宜入れ替わってもよい。 In the above processing, the order of each processing may be changed as appropriate.
　また、本技術において、カメラブロック９０及び撮像装置１００は、上記の処理を行う撮像素子９８、カメラ信号処理部９１、画像処理部９２、Ｒ／Ｗ９４の一部のみまたは全てを含むように構成されていてもよい。 Further, in the present technology, the camera block 90 and the image pickup device 100 are configured to include only a part or all of the image pickup element 98, the camera signal processing section 91, the image processing section 92, and the R / W 94 that perform the above processing. You may be.
　さらに、カメラブロック９０が撮像素子９８、カメラ信号処理部９１、画像処理部９２、Ｒ／Ｗ９４のうち一部を含み、装置本体が残りを含むように構成されていてもよい。 Further, the camera block 90 may be configured to include a part of the image sensor 98, the camera signal processing unit 91, the image processing unit 92, and the R / W 94, and the apparatus main body includes the rest.
　＜本技術＞
　本技術は、以下のような構成にすることもできる。 <This technology>
The present technology can also be configured as follows.
　（１）
　シャフト挿通孔を有しレンズを保持するレンズホルダーと、
　前記レンズホルダーと前記レンズを前記レンズの光軸方向へ移動させるアクチュエーターと、
　前記シャフト挿通孔に挿通される支持シャフトと、
　前記支持シャフトに支持される被支持部と付勢力によって前記アクチュエーターを前記レンズホルダーに押し付ける押付部とを有する板バネとを備えた
　レンズ駆動装置。 (1)
A lens holder that has a shaft insertion hole and holds the lens,
An actuator that moves the lens holder and the lens in the optical axis direction of the lens, and
A support shaft inserted into the shaft insertion hole and
A lens driving device including a leaf spring having a supported portion supported by the support shaft and a pressing portion for pressing the actuator against the lens holder by an urging force.
　（２）
　前記レンズホルダーに前記レンズを保持する環状のレンズ保持部と前記板バネが取り付けられるバネ取付部と前記バネ取付部に結合された補強部とが設けられた
　前記（１）に記載のレンズ駆動装置。 (2)
The lens driving device according to (1) above, wherein the lens holder is provided with an annular lens holding portion for holding the lens, a spring mounting portion to which the leaf spring is mounted, and a reinforcing portion coupled to the spring mounting portion. ..
　（３）
　前記レンズ保持部と前記バネ取付部が樹脂材料によって形成され、
　前記補強部が金属材料によって形成され、
　前記補強部がインサート成形により前記バネ取付部及び前記レンズ保持部と一体に形成された
　前記（２）に記載のレンズ駆動装置。 (3)
The lens holding portion and the spring mounting portion are formed of a resin material, and the lens holding portion and the spring mounting portion are formed of a resin material.
The reinforcing portion is formed of a metal material,
The lens driving device according to (2), wherein the reinforcing portion is integrally formed with the spring mounting portion and the lens holding portion by insert molding.
　（４）
　前記補強部には前記板バネの厚み方向において前記板バネの少なくとも一部に対向するベース面部が設けられた
　前記（２）又は前記（３）に記載のレンズ駆動装置。 (4)
The lens driving device according to (2) or (3) above, wherein the reinforcing portion is provided with a base surface portion facing at least a part of the leaf spring in the thickness direction of the leaf spring.
　（５）
　前記補強部には前記ベース面部に対して折り曲げられた曲げ面部が設けられた
　前記（４）に記載のレンズ駆動装置。 (5)
The lens driving device according to (4), wherein the reinforcing portion is provided with a bent surface portion that is bent with respect to the base surface portion.
　（６）
　前記補強部には前記押付部によって押し付けられるアクチュエーターを受ける受け面部が設けられた
　前記（２）から前記（５）の何れかに記載のレンズ駆動装置。 (6)
The lens driving device according to any one of (2) to (5) above, wherein the reinforcing portion is provided with a receiving surface portion for receiving an actuator pressed by the pressing portion.
　（７）
　前記板バネの一部と前記バネ取付部の一部との間に隙間が形成された
　前記（２）から前記（６）の何れかに記載のレンズ駆動装置。 (7)
The lens driving device according to any one of (2) to (6) above, wherein a gap is formed between a part of the leaf spring and a part of the spring mounting portion.
　（８）
　前記支持シャフトが炭素繊維強化樹脂によって形成された
　前記（１）から前記（７）の何れかに記載のレンズ駆動装置。 (8)
The lens driving device according to any one of (1) to (7) above, wherein the support shaft is formed of a carbon fiber reinforced resin.
　（９）
　前記支持シャフトの一部が前記レンズホルダーから突出された状態で前記シャフト挿通孔に挿通され、前記被支持部が前記支持シャフトにおける前記レンズホルダーから突出された部分に支持される
　前記（１）から前記（８）の何れかに記載のレンズ駆動装置。 (9)
From the above (1), a part of the support shaft is inserted into the shaft insertion hole in a state of protruding from the lens holder, and the supported portion is supported by a portion of the support shaft protruding from the lens holder. The lens driving device according to any one of (8) above.
　（１０）
　内部に配置されたレンズ駆動装置を備え、
　前記レンズ駆動装置は、
　シャフト挿通孔を有しレンズを保持するレンズホルダーと、
　前記レンズホルダーと前記レンズを前記レンズの光軸方向へ移動させるアクチュエーターと、
　前記シャフト挿通孔に挿通される支持シャフトと、
　前記支持シャフトに支持される被支持部と付勢力によって前記アクチュエーターを前記レンズホルダーに押し付ける押付部とを有する板バネとを備えた
　交換レンズ。 (10)
Equipped with a lens drive device located inside
The lens driving device is
A lens holder that has a shaft insertion hole and holds the lens,
An actuator that moves the lens holder and the lens in the optical axis direction of the lens, and
A support shaft inserted into the shaft insertion hole and
An interchangeable lens including a leaf spring having a supported portion supported by the support shaft and a pressing portion for pressing the actuator against the lens holder by an urging force.
　（１１）
　内部に配置されたレンズ駆動装置と前記レンズ駆動装置を介して取り込まれる光学像を電気的信号に変換する撮像素子とを備え、
　前記レンズ駆動装置は、
　シャフト挿通孔を有しレンズを保持するレンズホルダーと、
　前記レンズホルダーと前記レンズを前記レンズの光軸方向へ移動させるアクチュエーターと、
　前記シャフト挿通孔に挿通される支持シャフトと、
　前記支持シャフトに支持される被支持部と付勢力によって前記アクチュエーターを前記レンズホルダーに押し付ける押付部とを有する板バネとを備えた
　撮像装置。 (11)
It includes a lens driving device arranged inside and an image sensor that converts an optical image captured via the lens driving device into an electrical signal.
The lens driving device is
A lens holder that has a shaft insertion hole and holds the lens,
An actuator that moves the lens holder and the lens in the optical axis direction of the lens, and
A support shaft inserted into the shaft insertion hole and
An image pickup apparatus including a leaf spring having a supported portion supported by the support shaft and a pressing portion for pressing the actuator against the lens holder by an urging force.
１００　撮像装置
４００　撮像装置
２００　交換レンズ
３０４　撮像素子
５００　撮像装置
１　　　レンズ駆動装置
９　　　レンズホルダー
１０　　支持シャフト
１１　　板バネ
１２　　アクチュエーター
１３　　レンズ保持部
１４　　バネ取付部
１５　　補強部
１５ａ　ベース面部
１５ｂ　第１の曲げ面部
１５ｃ　第２の曲げ面部
１５ｅ　受け面部
１６　　レンズ
１９　　シャフト挿通孔
２３　　被支持部
２４　　押付部
９８　　撮像素子
Ｈ　　　隙間 100 Image sensor 400 Image sensor 200 Interchangeable lens 304 Image sensor 500 Image sensor 1 Lens drive device 9 Lens holder 10 Support shaft 11 Leaf spring 12 Actuator 13 Lens holding part 14 Spring mounting part 15 Reinforcing part 15a Base surface part 15b First bending surface part 15c Second bent surface portion 15e Receiving surface portion 16 Lens 19 Shaft insertion hole 23 Supported portion 24 Pressing portion 98 Image sensor H Gap

Claims (11)

  1. 　シャフト挿通孔を有しレンズを保持するレンズホルダーと、
    　前記レンズホルダーと前記レンズを前記レンズの光軸方向へ移動させるアクチュエーターと、
    　前記シャフト挿通孔に挿通される支持シャフトと、
    　前記支持シャフトに支持される被支持部と付勢力によって前記アクチュエーターを前記レンズホルダーに押し付ける押付部とを有する板バネとを備えた
    　レンズ駆動装置。     A lens holder that has a shaft insertion hole and holds the lens,
    An actuator that moves the lens holder and the lens in the optical axis direction of the lens, and
    A support shaft inserted into the shaft insertion hole and
    A lens driving device including a leaf spring having a supported portion supported by the support shaft and a pressing portion for pressing the actuator against the lens holder by an urging force.
  2. 　前記レンズホルダーに前記レンズを保持する環状のレンズ保持部と前記板バネが取り付けられるバネ取付部と前記バネ取付部に結合された補強部とが設けられた
    　請求項１に記載のレンズ駆動装置。     The lens driving device according to claim 1, wherein the lens holder is provided with an annular lens holding portion for holding the lens, a spring mounting portion to which the leaf spring is mounted, and a reinforcing portion coupled to the spring mounting portion.
  3. 　前記レンズ保持部と前記バネ取付部が樹脂材料によって形成され、
    　前記補強部が金属材料によって形成され、
    　前記補強部がインサート成形により前記バネ取付部及び前記レンズ保持部と一体に形成された
    　請求項２に記載のレンズ駆動装置。     The lens holding portion and the spring mounting portion are formed of a resin material, and the lens holding portion and the spring mounting portion are formed of a resin material.
    The reinforcing portion is formed of a metal material,
    The lens driving device according to claim 2, wherein the reinforcing portion is integrally formed with the spring mounting portion and the lens holding portion by insert molding.
  4. 　前記補強部には前記板バネの厚み方向において前記板バネの少なくとも一部に対向するベース面部が設けられた
    　請求項２に記載のレンズ駆動装置。     The lens driving device according to claim 2, wherein the reinforcing portion is provided with a base surface portion facing at least a part of the leaf spring in the thickness direction of the leaf spring.
  5. 　前記補強部には前記ベース面部に対して折り曲げられた曲げ面部が設けられた
    　請求項４に記載のレンズ駆動装置。     The lens driving device according to claim 4, wherein the reinforcing portion is provided with a bent surface portion that is bent with respect to the base surface portion.
  6. 　前記補強部には前記押付部によって押し付けられるアクチュエーターを受ける受け面部が設けられた
    　請求項２に記載のレンズ駆動装置。     The lens driving device according to claim 2, wherein the reinforcing portion is provided with a receiving surface portion for receiving an actuator pressed by the pressing portion.
  7. 　前記板バネの一部と前記バネ取付部の一部との間に隙間が形成された
    　請求項２に記載のレンズ駆動装置。     The lens driving device according to claim 2, wherein a gap is formed between a part of the leaf spring and a part of the spring mounting portion.
  8. 　前記支持シャフトが炭素繊維強化樹脂によって形成された
    　請求項１に記載のレンズ駆動装置。     The lens driving device according to claim 1, wherein the support shaft is made of a carbon fiber reinforced resin.
  9. 　前記支持シャフトの一部が前記レンズホルダーから突出された状態で前記シャフト挿通孔に挿通され、
    　前記被支持部が前記支持シャフトにおける前記レンズホルダーから突出された部分に支持される
    　請求項１に記載のレンズ駆動装置。     A part of the support shaft is inserted into the shaft insertion hole in a state of protruding from the lens holder.
    The lens driving device according to claim 1, wherein the supported portion is supported by a portion of the support shaft that protrudes from the lens holder.
  10. 　内部に配置されたレンズ駆動装置を備え、
    　前記レンズ駆動装置は、
    　シャフト挿通孔を有しレンズを保持するレンズホルダーと、
    　前記レンズホルダーと前記レンズを前記レンズの光軸方向へ移動させるアクチュエーターと、
    　前記シャフト挿通孔に挿通される支持シャフトと、
    　前記支持シャフトに支持される被支持部と付勢力によって前記アクチュエーターを前記レンズホルダーに押し付ける押付部とを有する板バネとを備えた
    　交換レンズ。     Equipped with a lens drive device located inside
    The lens driving device is
    A lens holder that has a shaft insertion hole and holds the lens,
    An actuator that moves the lens holder and the lens in the optical axis direction of the lens, and
    A support shaft inserted into the shaft insertion hole and
    An interchangeable lens including a leaf spring having a supported portion supported by the support shaft and a pressing portion for pressing the actuator against the lens holder by an urging force.
  11. 　内部に配置されたレンズ駆動装置と前記レンズ駆動装置を介して取り込まれる光学像を電気的信号に変換する撮像素子とを備え、
    　前記レンズ駆動装置は、
    　シャフト挿通孔を有しレンズを保持するレンズホルダーと、
    　前記レンズホルダーと前記レンズを前記レンズの光軸方向へ移動させるアクチュエーターと、
    　前記シャフト挿通孔に挿通される支持シャフトと、
    　前記支持シャフトに支持される被支持部と付勢力によって前記アクチュエーターを前記レンズホルダーに押し付ける押付部とを有する板バネとを備えた
    　撮像装置。     It includes a lens driving device arranged inside and an image sensor that converts an optical image captured via the lens driving device into an electrical signal.
    The lens driving device is
    A lens holder that has a shaft insertion hole and holds the lens,
    An actuator that moves the lens holder and the lens in the optical axis direction of the lens, and
    A support shaft inserted into the shaft insertion hole and
    An image pickup apparatus including a leaf spring having a supported portion supported by the support shaft and a pressing portion for pressing the actuator against the lens holder by an urging force.
PCT/JP2020/027479 2019-10-02 2020-07-15 Lens driving device, interchangeable lens, and imaging apparatus WO2021065150A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007226234A (en) * 2006-02-20 2007-09-06 Samsung Electro-Mechanics Co Ltd Lens driving device
JP2010081778A (en) * 2008-08-27 2010-04-08 Mitsumi Electric Co Ltd Driving method of driving apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007226234A (en) * 2006-02-20 2007-09-06 Samsung Electro-Mechanics Co Ltd Lens driving device
JP2010081778A (en) * 2008-08-27 2010-04-08 Mitsumi Electric Co Ltd Driving method of driving apparatus

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