WO2017164435A1 - Dispositif d'entraînement de lentille - Google Patents

Dispositif d'entraînement de lentille Download PDF

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Publication number
WO2017164435A1
WO2017164435A1 PCT/KR2016/002893 KR2016002893W WO2017164435A1 WO 2017164435 A1 WO2017164435 A1 WO 2017164435A1 KR 2016002893 W KR2016002893 W KR 2016002893W WO 2017164435 A1 WO2017164435 A1 WO 2017164435A1
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WO
WIPO (PCT)
Prior art keywords
carrier
optical axis
autofocus
shake compensation
spring
Prior art date
Application number
PCT/KR2016/002893
Other languages
English (en)
Korean (ko)
Inventor
정해남
Original Assignee
(주)파트론
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 (주)파트론 filed Critical (주)파트론
Publication of WO2017164435A1 publication Critical patent/WO2017164435A1/fr

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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
    • G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
    • 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
    • G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/023—Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/10—Power-operated focusing
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B5/04—Vertical adjustment of lens; Rising fronts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/682—Vibration or motion blur correction
    • H04N23/685—Vibration or motion blur correction performed by mechanical compensation

Definitions

  • the present invention relates to a lens driving device mounted on a camera module to move the lens barrel in at least one direction.
  • camera modules mounted in mobile electronic devices such as smart phones, tablet computers, and laptop computers are being advanced.
  • the advancement of the camera module is realized by the auto focus function, the high pixel function, and the zoom function.
  • an optical image stabilizing device (OIS, Optical Image Stabilizer) capable of compensating for hand shake has recently been installed.
  • An optical image stabilizer is a device for compensating for vibration by moving a lens barrel relative to a sensor.
  • Such an optical image stabilization apparatus is disclosed in Korean Patent No. 10-1518825 (registered May 4, 2015) and Japanese Patent Application Laid-Open No. 2013-024944 (published February 4, 2013).
  • the mobile electronic device in which the camera module is mounted has been miniaturized.
  • the pixels of the camera module tend to rise. Therefore, there is a demand for a lens driving device that can be miniaturized more precisely and capable of accurate vibration correction.
  • An object of the present invention is to provide a lens driving apparatus that can contribute to miniaturization and thinning of an electronic device mounted by minimizing the height in the optical axis direction.
  • Another object of the present invention is to provide a lens driving apparatus capable of correcting the shake of a precise lens barrel.
  • the lens drive device of the present invention for solving the above problems is a lens drive device comprising a lens barrel in which a lens is accommodated, the direction of the base, the shake correction carrier located on the base, the shake correction carrier orthogonal to the optical axis
  • An oscillation correction drive unit for moving the light source; an autofocus carrier positioned inside the oscillation correction carrier; an autofocus drive unit for moving the autofocus carrier in an optical axis direction; and the oscillation correction carrier in a direction perpendicular to the optical axis with respect to the base
  • the autofocus carrier may further include at least one spring for autofocus to support to move in the optical axis direction with respect to the shake compensation carrier.
  • the spring may include an upper spring and a lower spring located below the upper spring.
  • the autofocus spring may be formed as a leaf spring.
  • the autofocus spring includes an inner circumferential portion extending inwardly from the outer circumferential portion and the outer circumferential portion and elastically deformable in the optical axis direction with respect to the outer circumferential portion, and the outer circumferential portion is the shake compensation carrier.
  • the inner circumference may be coupled to the autofocus carrier.
  • it may further include at least one ball bearing for supporting the shake compensation carrier to be movable in a direction orthogonal to the optical axis with respect to the base.
  • the shake compensation carrier may be located in close contact with the base with the ball bearing therebetween.
  • the vibration correction drive unit at least one magnet coupled to the vibration correction carrier and at least one vibration correction coupled to the base, at least a portion of the magnet to the vibration correction includes Can be.
  • the shake compensation coil may be wound around an axis in a direction orthogonal to the optical axis.
  • the shake compensation coil may include two or more shake compensation coils oriented in two different directions perpendicular to the optical axis.
  • the two or more shake compensation coils oriented in two different directions may be oriented to be orthogonal to each other.
  • the vibration correction coil is coupled to the flexible circuit board can receive an electrical signal from a circuit formed on the flexible circuit board.
  • the flexible circuit board may further include a position sensing sensor coupled to face the magnet and detecting a movement in a direction orthogonal to the optical axis of the shake compensation carrier.
  • the autofocus driving unit at least one magnet coupled to the autofocus coil and the shake compensation carrier wound on the autofocus carrier, the at least a portion of the autofocus coil facing It may include.
  • the autofocus coil may be wound around an optical axis.
  • the autofocus carrier may further include a position sensing sensor coupled to face the magnet to detect movement of the autofocus carrier in the optical axis direction.
  • the shake compensation driving unit may include at least one shake compensation coil coupled to the magnet and the base, the at least one opposing to the magnet.
  • the autofocus carrier can move in the optical axis direction relative to the shake compensation carrier.
  • the autofocus carrier when the shake compensation carrier moves in a direction orthogonal to the optical axis, the autofocus carrier may move in a direction orthogonal to the optical axis together with the shake compensation carrier.
  • the lens barrel is moved in the optical axis direction in accordance with the movement of the optical axis direction of the autofocus carrier, the direction orthogonal to the optical axis in accordance with the movement in the direction orthogonal to the optical axis of the shake compensation carrier Can be moved.
  • one end of the shake compensation spring is coupled to the shake compensation carrier, the other end may be coupled to the base.
  • the shake compensation spring is not elastically deformed in the optical axis direction, but elastically deformed in the direction orthogonal to the optical axis can elastically support the movement of the shake compensation carrier.
  • the shake compensation spring may be formed in a plate shape standing in the vertical direction.
  • the shake compensation spring extends in a direction perpendicular to the optical axis and may be bent at least once.
  • the shake compensation spring may transmit an electrical signal applied to the coil of the autofocus drive unit.
  • the lens driving apparatus may contribute to miniaturization and thinning of the mounted electronic device by minimizing the height in the optical axis direction.
  • the lens driving apparatus is capable of accurately correcting the shake of the lens barrel.
  • FIG. 1 is a perspective view illustrating an appearance of a lens driving apparatus according to an exemplary embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of the lens driving apparatus according to the exemplary embodiment of the present invention, taken along line AA ′ of FIG. 1.
  • FIG. 3 is a cross-sectional view of the lens driving apparatus according to the exemplary embodiment of the present invention, taken along the line BB ′ of FIG. 1.
  • FIG. 4 is an exploded perspective view of a lens driving apparatus according to an embodiment of the present invention.
  • FIG. 5 is an exploded perspective view illustrating a portion corresponding to the base portion of the lens driving apparatus of the present invention.
  • FIG. 6 is a cross-sectional view of a portion corresponding to the base portion of the lens driving apparatus of the present invention.
  • FIG. 7 is a perspective view illustrating portions corresponding to a lens barrel, a lower plate, a shake compensation carrier, a shake compensation driver, an autofocus carrier, an autofocus driver, a ball bearing, and a spring of the lens driving apparatus of the present invention.
  • FIG. 8 is an exploded perspective view illustrating each component of FIG. 7.
  • FIG. 9 is a cross-sectional view of a portion of a lens driving apparatus according to an exemplary embodiment of the present invention, taken along line CC ′ of FIG. 7.
  • FIG. 10 is a cross-sectional view of a part of the lens driving apparatus according to the exemplary embodiment of the present invention, cut along the line DD ′ of FIG. 7.
  • FIG. 11 is a perspective view showing a part corresponding to a lens barrel, an autofocus carrier, an autofocus driving unit, and a shake compensation carrier of the lens driving apparatus of the present invention.
  • FIG. 12 is an exploded perspective view illustrating each component of FIG. 11.
  • FIG. 13 is a cross-sectional view of a part of a lens driving apparatus according to an exemplary embodiment of the present invention, cut along the line EE ′ of FIG. 11.
  • FIG. 14 is a cross-sectional view of a part of the lens driving apparatus according to the exemplary embodiment of the present invention, taken along the line FF ′ of FIG. 11.
  • FIGS. 1 to 5 a lens driving apparatus according to an exemplary embodiment of the present invention will be described with reference to FIGS. 1 to 5.
  • 1 is a perspective view illustrating an appearance of a lens driving apparatus according to an exemplary embodiment of the present invention.
  • 1 shows a three-axis coordinate system composed of x, y, and z axes.
  • the lens is disposed with the z-axis as the optical axis.
  • the optical axis of the lens means a direction in which light passing through the center of the lens travels.
  • the positive direction of the z-axis is defined upward, and the negative direction of the z-axis is defined downward.
  • the x- and y-axis directions will be defined laterally to be described.
  • the lens driving device is shielded by the shield case 210 so that only a part of the internal structure thereof is visible.
  • the shield case 210 may typically be formed in a polyhedron shape. Specifically, the shield case 210 may be formed in a hexahedron shape.
  • the shield case 210 may form a part of the base 200 of the lens driving apparatus to be described later, and accommodate various components of the lens driving apparatus therein.
  • the shield case 210 may be formed of a hard material to protect various components accommodated therein.
  • the shield case 210 may be formed of a metal material to perform a function of shielding electromagnetic noise (EMI) noise flowing in from the outside or generated inside the outflow.
  • EMI shielding electromagnetic noise
  • the shield case 210 has an opening 211 through which an upper surface of the lens barrel 100 may be exposed. And although not shown, the lower surface of the shield case 210 is also formed in an open form. The open path of the light traveling along the optical axis is secured by the open portions of the upper surface opening 211 and the lower surface of the shield case 210.
  • the upper surface of the lens barrel 100 is exposed through the upper opening 211 of the shield case 210. Specifically, the lens accommodated by the lens barrel 100 is positioned to be exposed through the opening 211.
  • the lens barrel 100 may be moved by the autofocus driver 600 and the shake compensation driver 400 and 700 which will be described later, and the opening 211 of the shield case 210 may move the lens barrel 100.
  • the lens barrel 100 may be formed larger than the upper surface of the lens barrel 100.
  • FIG. 2 is a cross-sectional view of the lens driving apparatus according to the exemplary embodiment of the present invention, taken along line AA ′ of FIG. 1.
  • 3 is a cross-sectional view of the lens driving apparatus according to the exemplary embodiment of the present invention, taken along the line BB ′ of FIG. 1.
  • 4 is an exploded perspective view of a lens driving apparatus according to an embodiment of the present invention.
  • the lens driving apparatus of the present invention includes the lens barrel 100, the base 200, the shake compensation carrier 300, the shake compensation driver 400, the autofocus carrier 500, and the autofocus.
  • the driving unit 600, the ball bearing 700, the autofocus spring 800, the flexible circuit board 240, and a position sensing sensor are included.
  • the image sensor unit may be coupled to the lower portion of the lens driving apparatus of the present invention.
  • the image sensor unit may include an image sensor, a circuit board on which the image sensor is mounted, an optical filter covering the image sensor, and the like.
  • the image sensor unit is coupled to cover the bottom surface of the base 200 is positioned below the lens barrel 100.
  • Light traveling in the optical axis direction passes through the lens barrel 100 and forms an image in the image sensor.
  • the image sensor converts the irradiated optical signal into an electrical signal and outputs the electrical signal.
  • FIGS. 5 to 17 illustrate an exploded view of part or all of the lens driving apparatus of the present invention.
  • each part of the lens driving apparatus of the present invention will be described in detail with reference to FIGS. 5 to 17 along with FIGS. 2 to 4.
  • 5 is an exploded perspective view illustrating a portion corresponding to the base portion of the lens driving apparatus of the present invention.
  • 6 is a cross-sectional view of a portion corresponding to the base portion of the lens driving apparatus of the present invention.
  • the base 200 is positioned relatively fixed to the lens barrel 100 in the lens driving apparatus.
  • the lens barrel 100 is accommodated in the base 200 to move in the optical axis direction together with the autofocus carrier 500 and moves in the direction orthogonal to the optical axis together with the shake compensation carrier 300.
  • the movement in the optical axis direction may be the movement in the z-axis direction
  • the movement in the direction orthogonal to the optical axis may be the movement in the x-axis or y-axis direction.
  • the movement of the lens barrel 100 corresponds to the relative movement with respect to the base 200.
  • the base 200 may include a shield case 210, a cover housing 220, and a lower plate 230.
  • the cover housing 220 is located inside the shield case 210.
  • the cover housing 220 has an opening through which an upper surface of the lens barrel 100 may be exposed, and a lower surface thereof may be open.
  • the cover housing 220 is formed to have a plurality of side surfaces.
  • the cover housing 220 may be formed to have four side surfaces, for example, as shown in the accompanying drawings.
  • the cover housing 220 may be coupled to the flexible circuit board 240 and the vibration compensation coil 420.
  • the cover housing 220 may be formed with a coupling portion to which the flexible circuit board 240 may be coupled.
  • the coupling part may be formed of a protrusion or the like, and may be coupled to be inserted into a hole of the flexible circuit board 240.
  • the vibration compensation coil 420 may be coupled to the side of the cover housing 220.
  • One end of the flexible circuit board 240 may be formed to be exposed to the outside of the base 200.
  • An input / output terminal 241 is formed in the exposed portion of the flexible circuit board 240 to transmit a signal and supply power.
  • the lower plate 230 is coupled to the open lower surface of the shield case 210 and the cover housing 220.
  • An opening is formed in the center of the lower plate 230.
  • the opening of the lower plate 230 is formed at a position opposite to the opening of the upper surface of the shield case 210 and the cover housing 220 to secure a path of light traveling along the optical axis.
  • the lens barrel 100 is positioned between the opening of the upper surface of the shield case 210 and the cover housing 220 and the opening of the lower plate 230.
  • FIG. 7 illustrates a lens barrel 100, a lower plate 230, a shake compensation carrier 300, a shake compensation driver 400, an autofocus carrier 500, an autofocus driver 600, and a lens barrel 100 of the present invention. It is a perspective view which shows the part corresponding to the ball bearing 700 and the spring for autofocus. 8 is an exploded perspective view illustrating each component of FIG. 7.
  • FIG. 9 is a cross-sectional view of a portion of a lens driving apparatus according to an exemplary embodiment of the present invention, taken along line CC ′ of FIG. 7.
  • FIG. 10 is a cross-sectional view of a part of the lens driving apparatus according to the exemplary embodiment of the present invention, cut along the line DD ′ of FIG. 7.
  • the shake compensation driving unit 400 will be described for driving the shake compensation carrier 300.
  • the shake compensation carrier 300 has an upper surface and a lower surface and is formed to have a plurality of side surfaces.
  • the side of the shake compensation carrier 300 is preferably formed to face the side of the base 200.
  • the shake compensation carrier 300 may be formed to have four sides facing the side of the base 200 of four sides.
  • the shake compensation carrier 300 may include a magnet holder 310 and a lower surface 320.
  • the magnet holder 310 may be formed to surround the side of the shake compensation carrier 300.
  • the side of the magnet holder 310 is opposite to the side of the cover housing 220, a magnet coupling portion 311 to which the magnet 410 is coupled is formed.
  • the magnet 410 is coupled to the magnet coupling portion 311, and at least a portion of the magnet 410 is disposed to face the vibration compensation coil 420 coupled to the cover housing 220.
  • the lower surface 320 of the stabilizer carrier may be coupled to a lower portion of the magnet holder 310.
  • the lower surface 320 of the stabilizer carrier may be positioned to face the lower plate 230 of the base 200.
  • the shake compensation carrier 300 may be supported by the shake compensation spring 350.
  • the shake compensation spring 350 may support the shake compensation carrier 300 to be supported on the lower plate 230 of the base 200.
  • the vibration compensation spring 350 may be coupled between the vibration compensation carrier 300 and the side of the base 200.
  • one end of the shake compensation spring 350 may be coupled to the bottom surface 320 of the shake compensation carrier, and the other end of the shake compensation spring 350 may be coupled to the side of the cover housing 220 of the base 200. .
  • the vibration compensation spring 350 may be formed in a plate shape extending in a direction perpendicular to the optical axis. Vibration correction spring 350 in the form of a plate may be arranged in a vertically erect form. That is, the thin part corresponding to the thickness of a board is oriented upwards and downwards, and the wide part corresponding to the front and back surface of a board is oriented laterally. The vibration compensation spring 350 may be bent at least once while extending in a direction perpendicular to the optical axis.
  • the vibration compensation spring 350 is formed to be hardly elastically deformed in the optical axis direction to limit the movement of the vibration compensation carrier 300 in the optical axis direction.
  • the vibration compensation spring 350 may be elastically deformed in a direction perpendicular to the optical axis. Accordingly, the shake compensation spring 350 restricts the movement of the shake compensation carrier 300 in the optical axis direction, and allows the movement by elastically deforming in the direction orthogonal to the optical axis.
  • the vibration compensation spring 350 may be coupled to a plurality of sides of the vibration compensation carrier 300.
  • a plurality of vibration correction springs 350 may be formed at positions symmetrical with respect to the optical axis to stably support the vibration correction carrier 300.
  • the electrical signal may be transmitted through the shake compensation spring 350.
  • the vibration compensation spring 350 may be formed of a conductive material.
  • the electrical signal may be a signal applied from the outside to the autofocus coil 620.
  • the other end of the vibration compensation spring 350 may be formed with a terminal extension 351 that can receive an electrical signal.
  • the terminal extension 351 is extended to be exposed to the outside of the base 200 so that an external signal can be applied.
  • At least one ball bearing 700 may be located between the vibration compensation carrier 300 and the lower plate 230.
  • the ball bearing 700 supports the shake compensation carrier 300 to be movable in a direction perpendicular to the optical axis with respect to the base 200.
  • the movement of the vibration compensation carrier 300 in the optical axis direction due to the slight deformation of the optical axis direction of the vibration compensation spring 350 may be limited as much as possible.
  • the stabilizer carrier 300 is positioned in close contact with the lower plate 230 with the ball bearing 700 therebetween.
  • the shake compensation carrier 300 and the lower plate 230 may be in close contact by magnetic force.
  • the yoke 231 or the magnet 231 may be disposed on the lower plate 230.
  • the yoke 231 or the magnet 231 of the lower plate 230 is disposed at a position opposite to the magnet 410 coupled to the shake compensation carrier 300, so that attraction between each other may occur. By this attraction, the shake compensation carrier 300 may be in close contact with the ball bearing 700 interposed between the lower plate 230.
  • the shake compensation carrier 300 after the shake compensation carrier 300 is moved in a direction orthogonal to the optical axis by the attraction force, when the external force is removed, it may return to the initial position by the attraction force.
  • the ball bearing 700 may include a ball 710 and a cavity 721 that provides a limited space in which the ball can be housed and moved.
  • the cavity 721 may be formed in a groove shape on the lower surface 320 and the lower plate 230 of the shake compensation carrier.
  • the cavity 721 may also be formed by an opening formed in the bearing plate 720 positioned between the lower surface 320 of the shake compensation carrier and the upper surface of the lower plate 230.
  • the bearing plate 720 may be fixedly coupled to one of the lower surface 320 of the shake compensation carrier or the upper surface of the lower plate 230. In the accompanying drawings, the bearing plate 720 is fixedly coupled to the lower surface 320 of the shake compensation carrier, but may be fixedly coupled to the upper surface of the lower plate 230.
  • grooves and protrusions may be formed.
  • a protrusion may be formed on the lower surface 320 or the upper surface of the lower plate 230 of the shake compensation carrier, and the protrusion may be inserted into and coupled to the groove formed in the bearing plate 720.
  • the cavity 721 is formed larger than the diameter of the ball 710 so that when the shake compensation carrier 300 is moved in a direction perpendicular to the optical axis by an external force, the ball 710 rolls inside the cavity 721 to function as a bearing. do. Lubricant is applied around the ball 710 to minimize friction.
  • a plurality of balls 710 are formed to stably support the shake compensation carrier 300.
  • a plurality of balls 710 may be formed at positions symmetrical to the optical axis to stably support the shake compensation carrier 300.
  • the shake compensation carrier 300 accommodates the lens barrel 100 and the autofocus carrier 500 therein. As the shake compensation carrier 300 moves in a direction orthogonal to the optical axis, the lens barrel 100 and the autofocus carrier 500 also move with the shake compensation carrier 300.
  • the vibration correction driver 400 includes a magnet 410 and a vibration correction coil 420.
  • the magnet 410 is coupled to the shake compensation carrier 300.
  • the magnet 410 may be coupled to the magnet holder 310 of the shake compensation carrier 300.
  • the vibration compensation coil 420 is coupled to the base 200.
  • the vibration compensation coil 420 may be coupled to the cover housing 220.
  • the magnet 410 and the vibration compensation coil 420 may be disposed to at least partially face each other.
  • the magnet 410 and the vibration compensation coil 420 may be formed in plural numbers.
  • the plurality of magnets 410 and the shake compensation coil 420 are oriented in different directions perpendicular to the optical axis.
  • the magnet 410 and the vibration compensation coil 420 may be disposed to be opposed to each other coupled to each of the four sides.
  • the magnet 410 and the shake compensation coil 420 may be orthogonal to the neighboring magnet 410 and the shake compensation coil 420.
  • the vibration compensation coil 420 is formed in a shape wound around an axis in a direction orthogonal to the optical axis.
  • the vibration compensation coil 420 may be coupled to the flexible circuit board 240 coupled to the base 200.
  • the vibration compensation coil 420 may receive an electrical signal from a circuit formed on the flexible circuit board 240.
  • the circuit formed on the flexible circuit board 240 may be connected to the input / output terminal 241 to receive electric signals and power from the outside.
  • the shake compensation carrier 300 When current is applied to the shake compensation coil 420, the shake compensation carrier 300 is moved in a direction orthogonal to the optical axis by interaction with the magnet 410. The movement direction of the shake compensation carrier 300 may be adjusted by the direction of the current applied to the shake compensation coil 420.
  • the position sensing sensor may be coupled to the flexible circuit board 240 coupled to the base 200.
  • the position detection sensor may be coupled to face the magnet 410 to sense that the shake compensation carrier 300 moves in a direction perpendicular to the optical axis.
  • the position sensing sensor may be formed of, for example, a hall element.
  • FIG. 11 is a perspective view illustrating portions corresponding to the lens barrel 100, the autofocus carrier 500, the autofocus driver 600, and the shake compensation carrier 300 of the lens driving apparatus of the present invention.
  • 12 is an exploded perspective view illustrating each component of FIG. 11.
  • FIG. 13 is a cross-sectional view of a part of a lens driving apparatus according to an exemplary embodiment of the present invention, cut along the line EE ′ of FIG. 11.
  • 14 is a cross-sectional view of a part of the lens driving apparatus according to the exemplary embodiment of the present invention, taken along the line FF ′ of FIG. 11.
  • the autofocus driving unit 600 drives the autofocus carrier 500.
  • the lens barrel 100 may be formed in a cylindrical shape.
  • the lens barrel 100 is formed to have an open top and bottom surfaces so that light may pass through the top and bottom surfaces. At least one lens is accommodated in the lens barrel 100. The lens moves with the lens barrel 100 as it moves.
  • the autofocus carrier 500 is coupled to accommodate the lens barrel 100.
  • the autofocus carrier 500 and the lens barrel 100 are integrally moved.
  • the autofocus carrier 500 and the lens barrel 100 are located inside the shake compensation carrier 300.
  • the autofocus driver 600 includes a magnet 610 and an autofocus coil 620.
  • the magnet 610 of the autofocus driver 600 is coupled to the shake compensation carrier 300.
  • the magnet 610 of the autofocus driver 600 may be the same as the magnet 410 of the shake compensation driver 400. That is, one magnet 410 or 610 may be used as the magnet 610 of the autofocus driver 600 and the magnet 410 of the shake compensation driver 400.
  • the autofocus coil 620 is coupled to the autofocus carrier 500.
  • the autofocus coil 620 is at least partially opposed to the magnet 610.
  • the autofocus coil 620 is wound around the optical axis.
  • the autofocus carrier 500 When current is applied to the autofocus coil 620, the autofocus carrier 500 is moved in the optical axis direction by interaction.
  • the moving direction of the autofocus carrier 500 may be adjusted by the direction of the current applied to the autofocus coil 620.
  • Position detection sensor may be coupled to the autofocus carrier 500.
  • the position detection sensor may be coupled to face the magnet 610 to detect that the autofocus carrier 500 moves in the optical axis direction.
  • the position sensing sensor may be formed of, for example, a hall element.
  • the autofocus carrier 500 may be supported to move in the optical axis direction by the autofocus spring 800.
  • the autofocus spring 800 may include an upper spring 810 coupled to an upper portion of the autofocus carrier 500 and a lower spring 820 coupled to a lower portion of the autofocus carrier 500.
  • the autofocus spring 800 may elastically support movement of the autofocus carrier 500 in the optical axis direction.
  • the autofocus spring 800 may be formed in the form of a leaf spring, and may include an inner circumference portion, an outer circumference portion, and an extension portion extending the inner circumference portion and the outer circumference portion.
  • the inner circumference of the autofocus spring 800 may be coupled to the autofocus carrier 500.
  • the outer circumferential portion of the autofocus spring 800 may be coupled to the shake compensation carrier 300.
  • An extension of the autofocus spring 800 is elastically deformed to support movement of the autofocus carrier 500 in the optical axis direction with respect to the shake compensation carrier 300.
  • the autofocus spring 800 may be integrally formed with the vibration compensating spring 350 described above. Specifically, the outer circumferential portion of the autofocus spring 800 is coupled to the shake compensation carrier 300, and a portion extending from the outer circumferential portion corresponds to one end of the shake correction spring 350 and extends to the other end connected to the base 200. Can be.
  • the electrical signal may be transmitted through the autofocus spring 800.
  • the electrical signal may be a signal applied from the outside to the autofocus coil 620.
  • the autofocus spring 800 may be formed of a conductive material.
  • an electrical signal may be transmitted through the integral spring structure.
  • the lens barrel 100 may move in the optical axis direction with respect to the base 200, and may move in the direction orthogonal to the optical axis.
  • the autofocus carrier 500 may move the lens barrel 100 by moving in the optical axis direction relative to the shake compensation carrier 300.
  • the shake compensation carrier 300 may move in a direction orthogonal to the optical axis relative to the base 200 to move the lens barrel 100 in a direction orthogonal to the optical axis.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Adjustment Of Camera Lenses (AREA)
  • Lens Barrels (AREA)

Abstract

L'invention concerne un dispositif d'entraînement de lentille. Le dispositif d'entraînement de lentille comprend : une base ; un support de stabilisation d'image placé sur la base ; une unité de commande de stabilisation d'image qui déplace le support de stabilisation d'image dans un sens perpendiculaire à un axe optique ; un support de mise au point automatique placé à l'intérieur du support de stabilisation d'image ; une unité de commande de mise au point automatique qui déplace le support de mise au point automatique dans le sens de l'axe optique ; et au moins un ressort pour la stabilisation d'image, fournissant un support de sorte que le support de stabilisation d'image puisse être déplacé dans le sens perpendiculaire à l'axe optique par rapport à la base.
PCT/KR2016/002893 2016-03-22 2016-03-23 Dispositif d'entraînement de lentille WO2017164435A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2016-0033751 2016-03-22
KR1020160033751A KR20170109767A (ko) 2016-03-22 2016-03-22 렌즈 구동 장치

Publications (1)

Publication Number Publication Date
WO2017164435A1 true WO2017164435A1 (fr) 2017-09-28

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KR (1) KR20170109767A (fr)
WO (1) WO2017164435A1 (fr)

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WO2021215775A1 (fr) * 2020-04-20 2021-10-28 엘지이노텍 주식회사 Module de caméra
CN114415442A (zh) * 2020-10-14 2022-04-29 宁波舜宇光电信息有限公司 用于光学致动器的驱动结构及相应的摄像模组

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KR102503859B1 (ko) * 2018-04-05 2023-02-24 엘지이노텍 주식회사 렌즈구동장치 및 이를 포함하는 카메라장치
US11333951B2 (en) * 2019-04-22 2022-05-17 Jahwa Electronics Co., Ltd. Actuator for camera

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JP2012058555A (ja) * 2010-09-10 2012-03-22 Panasonic Corp レンズアクチュエータ
US20150062421A1 (en) * 2013-08-27 2015-03-05 Samsung Electro-Mechanics Co., Ltd. Camera module
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WO2021215775A1 (fr) * 2020-04-20 2021-10-28 엘지이노텍 주식회사 Module de caméra
CN114415442A (zh) * 2020-10-14 2022-04-29 宁波舜宇光电信息有限公司 用于光学致动器的驱动结构及相应的摄像模组
CN114428435A (zh) * 2020-10-14 2022-05-03 宁波舜宇光电信息有限公司 用于光学致动器的驱动结构及相应的摄像模组
CN114428431A (zh) * 2020-10-14 2022-05-03 宁波舜宇光电信息有限公司 光学防抖摄像模组及其组装方法
CN114428432A (zh) * 2020-10-14 2022-05-03 宁波舜宇光电信息有限公司 用于光学致动器的驱动结构及相应的摄像模组
CN114428436A (zh) * 2020-10-14 2022-05-03 宁波舜宇光电信息有限公司 光学防抖摄像模组
CN114428433A (zh) * 2020-10-14 2022-05-03 宁波舜宇光电信息有限公司 用于光学致动器的驱动结构及相应的摄像模组
CN114428431B (zh) * 2020-10-14 2023-12-19 宁波舜宇光电信息有限公司 光学防抖摄像模组及其组装方法
CN114428435B (zh) * 2020-10-14 2023-12-19 宁波舜宇光电信息有限公司 用于光学致动器的驱动结构及相应的摄像模组
CN114428432B (zh) * 2020-10-14 2023-12-19 宁波舜宇光电信息有限公司 用于光学致动器的驱动结构及相应的摄像模组
CN114428433B (zh) * 2020-10-14 2023-12-19 宁波舜宇光电信息有限公司 用于光学致动器的驱动结构及相应的摄像模组
CN114415442B (zh) * 2020-10-14 2023-12-19 宁波舜宇光电信息有限公司 用于光学致动器的驱动结构及相应的摄像模组
CN114428436B (zh) * 2020-10-14 2023-12-22 宁波舜宇光电信息有限公司 光学防抖摄像模组

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