WO2017164432A1 - Dispositif d'entraînement de lentille - Google Patents

Dispositif d'entraînement de lentille Download PDF

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Publication number
WO2017164432A1
WO2017164432A1 PCT/KR2016/002890 KR2016002890W WO2017164432A1 WO 2017164432 A1 WO2017164432 A1 WO 2017164432A1 KR 2016002890 W KR2016002890 W KR 2016002890W WO 2017164432 A1 WO2017164432 A1 WO 2017164432A1
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WO
WIPO (PCT)
Prior art keywords
autofocus
carrier
magnet
optical axis
coupled
Prior art date
Application number
PCT/KR2016/002890
Other languages
English (en)
Korean (ko)
Inventor
윤금영
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 WO2017164432A1 publication Critical patent/WO2017164432A1/fr

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    • 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
    • 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
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0053—Driving means for the movement of one or more optical element
    • G03B2205/0069—Driving means for the movement of one or more optical element using electromagnetic actuators, e.g. voice coils

Definitions

  • the present invention relates to a 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.
  • optical image stabilizing device capable of compensating for hand shake.
  • the optical image stabilizer is a device for compensating for vibration by moving a lens barrel relative to a sensor.
  • Korean Patent Registration No. 10-1518825 registered on May 4, 2015
  • Japanese Patent Application Laid-Open Publication No. 2013-024944 published February 4, 2013 and the like.
  • 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 be miniaturized.
  • Another object of the present invention is to provide a lens driving apparatus capable of correcting the shake of a precise lens barrel.
  • Another object of the present invention is to provide a lens driving apparatus having a structure in which the overall assembly process can be simplified by separating the assembly process of the autofocus carrier and the autofocus driving unit and the assembly process of the shake compensation carrier and the shake correction driving unit. It is.
  • the lens drive device of the present invention for solving the above problems, the lens drive device comprising a lens barrel containing a lens, the base, the autofocus carrier disposed on the base, the autofocus carrier for moving in the optical axis direction
  • At least one spring and at least one ball bearing positioned between the autofocus carrier and the shake compensation carrier.
  • the spring may include an upper spring and a lower spring located below the upper spring.
  • the spring may be formed of a leaf spring.
  • the spring extends inward from the outer peripheral portion and the outer peripheral portion, and includes an inner peripheral portion that can be elastically deformed in the optical axis direction with respect to the outer peripheral portion, the outer peripheral portion is coupled to the base, An inner circumference may be coupled to the autofocus carrier.
  • the autofocus driving unit at least one autofocus magnet coupled to the autofocus carrier and the base, and at least one opposing at least a portion of the autofocus magnet It may include a coil for autofocus.
  • the autofocus coil may be wound around an optical axis.
  • the autofocus 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 autofocus magnet so as to sense a movement in the optical axis direction of the autofocus carrier.
  • the vibration correction drive unit at least one vibration correction coupled to the base and at least one vibration correction magnet coupled to the vibration correction carrier, at least a portion of the vibration correction magnet is opposed to the vibration correction magnet It may include a coil.
  • the shake compensation coil may be wound around an axis in a direction orthogonal to the optical axis.
  • 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 the vibration correction magnet so as to sense a movement in an optical axis direction or a direction orthogonal to the optical axis of the vibration correction carrier. have.
  • the autofocus driving unit at least one autofocus magnet coupled to the autofocus carrier and the base, and at least one opposing at least a portion of the autofocus magnet
  • an autofocus coil wherein the shake compensation driving unit is coupled to at least one shake correction magnet and the base coupled to the shake correction carrier, and at least one shake correction coil coupled to the base and at least partially opposed to the shake correction magnet.
  • the autofocus magnet and the shake compensation magnet may be disposed so that at least a portion of the magnets for opposing.
  • the attraction force may act between the autofocus magnet and the shake compensation magnet opposing each other.
  • the opposing autofocus magnet and the shake compensation magnet may have different polarities in opposing parts.
  • the autofocus magnet and the shake compensation magnet may be formed in the same number.
  • the autofocus coil and the shake correction coil are respectively disposed to face the sides of the autofocus magnet and the shake correction magnet, the upper surface of the autofocus magnet and the shake correction
  • the lower surfaces of the magnets may be disposed to face each other.
  • the shake compensation carrier may be located in close contact with the autofocus carrier with the ball bearing therebetween.
  • the shake compensation carrier may move in a direction orthogonal to the optical axis relative to the autofocus carrier.
  • the shake compensation carrier when the autofocus carrier is moved in the optical axis direction, the shake compensation carrier may be moved in the optical axis direction together with the autofocus 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.
  • the autofocus carrier may be located spaced apart from the lower surface of the base.
  • the lens driving apparatus according to the embodiment of the present invention can be miniaturized, and the shake compensation of the lens barrel can be precisely performed.
  • the lens driving apparatus may simplify the overall assembly process by separating the assembly process of the autofocus carrier and the autofocus driver and the assembly process of the shake compensation carrier and the shake compensation driver.
  • 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 showing a part corresponding to the lens barrel, the autofocus carrier, the stabilizer carrier, the ball bearing and the magnet of the lens driving device of the present invention.
  • FIG. 8 is an exploded perspective view illustrating parts corresponding to the lens barrel, the autofocus carrier, the stabilizer carrier, the ball bearing, and the magnet of the lens driving apparatus of the present invention.
  • 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 illustrating a lens barrel, an autofocus carrier, a stabilizer carrier, a ball bearing, and a magnet coupled to a coil holder for autofocus among bases through a spring of the lens driving apparatus of the present invention.
  • FIG. 12 is an exploded perspective view illustrating a lens barrel, an autofocus carrier, a stabilizer carrier, a ball bearing, and a magnet coupled to a coil holder for autofocus through a spring.
  • 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.
  • FIG. 15 is a perspective view showing a lens barrel, an autofocus carrier, a shake compensation carrier, a ball bearing, and a magnet disposed opposite to a shake compensation coil of the lens driving device of the present invention.
  • FIG. 16 is a cross-sectional view of a portion of the lens driving apparatus according to the exemplary embodiment of the present invention, cut along the line GG ′ of FIG. 15.
  • FIG. 17 is a cross-sectional view of a portion of the lens driving apparatus according to the exemplary embodiment of the present invention, cut along the line HH ′ of FIG. 15.
  • FIGS. 1 to 17 a lens driving apparatus according to an exemplary embodiment of the present invention will be described with reference to FIGS. 1 to 17.
  • FIG. 1 is a perspective view illustrating an external appearance of a lens driving apparatus according to an exemplary embodiment of the present invention.
  • FIG. 1 illustrates a three-axis coordinate system composed of an x-axis, a y-axis, and a z-axis.
  • 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 top surface of the lens barrel 100 is exposed through the top opening 211 of the shield case 210.
  • the lens accommodated by the lens barrel 100 is positioned to be exposed through the opening 211.
  • 100 may be moved by the autofocus driver 600 and the shake compensation driver 700, which will be described later, and the opening 211 of the shield case 210 may be configured in consideration of the movement of the lens barrel 100. It may be formed larger than the upper surface of 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 a base 200, an autofocus carrier 300, an autofocus driving unit 600, an oscillation correction carrier 400, an oscillation correction driving unit 700, and a spring. 800, a ball bearing 500, a flexible circuit board 240, and a position detection sensor 900.
  • 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 lower surface of the shield case 210 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 300 and moves in the direction orthogonal to the optical axis together with the shake compensation carrier 400.
  • 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 and coil holders 220 and 230.
  • the coil holders 220 and 230 may include an autofocus coil holder 220 and a shake compensation coil holder 230.
  • the autofocus coil holder 220 and the shake compensation coil holder 230 may be used.
  • the autofocus coil holder 220 may be located below the vibration compensation coil holder 230.
  • Coupling holders 220 and 230 may be formed with coupling portions so that the autofocus coil 620 and the vibration compensation coil 720 may be coupled, respectively.
  • the coupling portion may have a shape of an opening 231 into which the coil is inserted and coupled.
  • the coil may be formed in the form of a bobbin 221 which can be wound and wound.
  • the flexible printed circuit board 240 may be coupled to the base 200.
  • the flexible printed circuit board 240 has an external connection terminal 241 formed at one side thereof, and the external connection terminal 241 is external to the base 200. It can be formed to be exposed.
  • a plurality of coil connection terminals 242 may be formed on the flexible circuit board 240 so that the autofocus coil 620 and the shake compensation coil 720 may be electrically connected to each other.
  • the flexible circuit board 240 may be coupled to the coil holders 220 and 230.
  • the flexible circuit board 240 may be positioned between the shield case 210 and the coil holders 220 and 230.
  • the coil holders 220 and 230 may have protrusions 233 for fixing and coupling the flexible circuit board 240, and the holes 243 into which the protrusions 233 may be inserted into the flexible circuit board 240. It may be formed.
  • FIG. 7 is a perspective view showing a part corresponding to the lens barrel, the autofocus carrier, the stabilizer carrier, the ball bearing and the magnet of the lens driving device of the present invention.
  • 8 is an exploded perspective view illustrating parts corresponding to the lens barrel, the autofocus carrier, the stabilizer carrier, the ball bearing, and the magnet of the lens driving apparatus of the present invention.
  • 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 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 shake compensation carrier 400 may be formed to have a hollow portion 401 therein.
  • the hollow part 401 is open in the optical axis direction.
  • the lens barrel 100 may be coupled to the hollow portion 401.
  • the lens barrel 100 is fixedly coupled to the hollow portion 401 of the shake compensation carrier 400, such that the lens barrel 100 and the shake compensation carrier 400 are integrally moved.
  • the outer surface of the lens barrel 100 may be combined with the inner circumferential surface of the hollow portion 401 of the shake compensation carrier 400.
  • the upper portion of the outer surface of the lens barrel 100 is coupled to the inner circumferential surface of the hollow portion 401 of the shake compensation carrier 400, the lower portion of the lens barrel 100 to the lower portion of the shake compensation carrier 400 It may protrude.
  • the shake compensation carrier 400 may be formed in a polygonal pillar shape having an outer surface with a plurality of surfaces.
  • the shake compensation carrier 400 may be formed in the shape of a square pillar or an octagonal pillar having four sides or eight sides.
  • the shake compensation carrier 400 is preferably formed to be symmetrical about the optical axis for accuracy of control while moving for shake compensation.
  • the shake compensation carrier 400 may function as a holder for the shake compensation magnet 710.
  • the vibration compensation carrier 400 is preferably formed of a resin material such as plastic so that the magnetic force of the magnet can pass therethrough.
  • the shaking compensation carrier 400 may include a coupling part 402 to which the shaking compensation magnet 710 may be coupled.
  • the vibration compensation magnet coupling part 402 may be formed in the shape of a groove so that the vibration compensation magnet 710 may be inserted into and coupled to the groove.
  • the shaking compensation magnet 710 is integrally coupled to the shaking compensation carrier 400 to move together.
  • One or more tremor correction magnets 710 may be formed. Accordingly, the tremor correction magnet coupling portion 402 may be formed in the same number.
  • the shake compensation magnet coupling part 402 is formed on a plurality of side surfaces of the shake compensation carrier 400, and is preferably formed at a position symmetrical to the optical axis.
  • the autofocus carrier 300 is positioned below the shake compensation carrier 400.
  • Autofocus carrier 300 may also be formed to have a hollow portion 301 in the central portion.
  • the hollow part 301 is open in the optical axis direction.
  • a part of the lens barrel 100 may be inserted into the hollow part 301 of the autofocus carrier 300.
  • the lower portion of the lens barrel 100 may be inserted into the hollow portion 301 of the autofocus carrier 300.
  • the hollow portion 301 of the autofocus carrier 300 and the lens barrel 100 are not fixedly coupled and remain separated from each other.
  • the lens barrel 100 is hollow of the autofocus carrier 300. It can be moved in the direction orthogonal to the optical axis alone in the state inserted into the portion 301.
  • the hollow portion 301 of the autofocus carrier 300 is larger than the lens barrel 100 to provide a displacement in which the lens barrel 100 can move in a direction orthogonal to the optical axis.
  • the outer circumferential surface of the lens barrel 100 is an autofocus carrier ( Maintaining a state spaced apart from the inner peripheral surface of the hollow portion 301 of 300.
  • the hollow portion of the autofocus carrier 300 than the hollow portion 401 of the shake compensation carrier 400 301 becomes larger.
  • the autofocus carrier 300 may be formed in the shape of a polygonal column having an outer surface with a plurality of surfaces.
  • the autofocus carrier 300 may be formed in the shape of a square pillar or an octagonal pillar having four sides or eight sides.
  • the autofocus carrier 300 is preferably formed to be symmetrical about the optical axis for accuracy of control while moving for autofocus.
  • the autofocus carrier 300 may function as a holder for the magnet 610 for autofocus.
  • the autofocus carrier 300 is preferably formed of a resin material such as plastic so that the magnetic force of the magnet can pass therethrough.
  • the autofocus carrier 300 may include a coupling part 302 to which the autofocus magnet 610 may be coupled.
  • the autofocus magnet coupling portion 302 may be formed in the shape of a groove so that the autofocus magnet 610 may be inserted into and coupled to the groove.
  • the autofocus magnet 610 is integrally coupled to the autofocus carrier 300 to move together.
  • One or more autofocus magnets 610 may be formed, and accordingly, the same number of autofocus magnet coupling portions 302 may be formed.
  • a plurality of autofocus magnet coupling portions 302 are formed.
  • the autofocus magnet coupling portion 302 is formed on a plurality of side surfaces of the autofocus carrier 300, but is preferably formed at a position symmetrical to the optical axis.
  • the autofocus carrier 300 and the shake compensation carrier 400 may be arranged to be stacked up and down.
  • the shake compensation carrier 400 may be positioned above the autofocus carrier 300.
  • the ball bearing 500 may be positioned between the autofocus carrier 300 and the shake compensation carrier 400.
  • the ball bearing 500 may have the shake compensation carrier 400 orthogonal to the optical axis on the autofocus carrier 300. In moving in the direction, it performs a function of reducing friction.
  • At least three ball bearings 500 may be formed to evenly support the lower surface of the shake compensation carrier 400.
  • the ball bearing 500 may include a plate 510 and a ball 520.
  • the plate 510 may be located between the upper surface of the autofocus carrier 300 and the lower surface of the shake compensation carrier 400. Plate 510 may also be formed to have a hollow portion 501 in the central portion. The hollow part 501 is open in the optical axis direction. A part of the lens barrel 100 may be inserted into the hollow part of the plate 510.
  • the plate 510 may be fixedly coupled to one of the top surface of the autofocus carrier 300 or the bottom surface of the shake compensation carrier 400.
  • the plate 510 is fixedly coupled to the top surface of the autofocus carrier 300, but may be fixedly coupled to the bottom surface of the vibration compensation carrier 400.
  • grooves and protrusions may be formed.
  • the projection 303 is formed on the upper surface of the autofocus carrier 300, the projection 303 may be inserted into the groove 513 formed in the plate 510 may be coupled.
  • At least one hole 511 into which the ball 520 is inserted may be formed in the plate 510.
  • the hole 511 is formed to penetrate the upper and lower surfaces of the plate 510.
  • the ball 520 is accommodated in the hole 511, and the ball 520 rolls inside the hole 511 to function as a bearing. Therefore, the diameter of the hole 511 is larger than the diameter of the ball 520, the ball 520 is formed to be able to move or roll inside.
  • a plurality of holes 511 are formed in a position symmetrical to the optical axis As a result, the ball 520 can stably support the shake compensation carrier 400.
  • the plate 510 is formed to have a thickness smaller than the height of the ball 520. Therefore, the plate 510 is positioned between the upper surface of the autofocus carrier 300 and the lower surface of the shake compensation carrier 400, and the upper and lower ends of the ball 520 in the state where the ball 520 is accommodated in the hole of the plate 510.
  • the lower surface of each of the shake compensation carriers 400 is in contact with the upper surface of the autofocus carrier 300.
  • only one surface of the upper surface and the lower surface of the plate 510 is in contact with the lower surface of the shake compensation carrier 400 and the upper surface of the autofocus carrier 300.
  • the ball 520 may be formed in a spherical shape to support movement in a direction orthogonal to the optical axis in a state in which the position in the optical axis direction of the shake compensation carrier 400 is not changed. Friction can be suppressed around the ball 520. Grease may be applied.
  • the upper surface of the autofocus carrier 300 and the lower surface of the shake compensation carrier 400 are preferably formed in a planar shape. However, in some cases, a groove is formed in a portion where the ball 520 is in contact with the upper surface of the autofocus carrier 300 and the lower surface of the shake compensation carrier 400, so that a portion of the ball 520 may be formed in a shape in which the groove is accommodated. have.
  • the autofocus magnet 610 and the shake compensation magnet 710 may be coupled to the autofocus magnet coupling part 302 and the shake compensation magnet coupling part 402, respectively.
  • the autofocus magnet 610 is part of the autofocus driver 600.
  • the shake compensation magnet 710 is a part of the shake compensation driver 700.
  • the autofocus magnet 610 and the shake compensation magnet 710 may be formed of a hexahedron.
  • the hexahedral shape autofocus magnet 610 and the shake compensation magnet 710 have one side and a side opposite thereto. It may be formed in a plate shape larger than the other surface.
  • a surface corresponding to a large side surface may be coupled to face the outer side of the carrier for autofocus and the shake compensation carrier 400.
  • the autofocus magnet 610 and the shake compensation magnet 710 are formed in the same number, and when the autofocus carrier 300 and the shake compensation carrier 400 are arranged in a stacked form, they are positioned to overlap each other. Can be.
  • the shake compensation magnet 710 may be positioned on the autofocus magnet 610. Accordingly, the upper surface of the autofocus magnet 610 and the lower surface of the shake compensation magnet 710 are opposed to each other.
  • the attraction force is applied between the autofocus magnet 610 and the vibration compensation magnet 710 facing each other.
  • the top surface of the autofocus magnet 610 and the bottom surface of the shake compensation magnet 710 may be formed to have different polarities, thereby causing attraction by a magnetic field.
  • the shake compensation carrier 400 may be automatically It may be in close contact with the focus carrier 300 side.
  • the lower surface of the shake compensation carrier 400 is in close contact with the upper surface of the autofocus carrier 300 with the ball bearing 500 therebetween.
  • the shake compensation carrier 400 moves in the direction orthogonal to the optical axis by the shake compensation driver 700, when the external force is removed, the attraction force between the autofocus magnet 610 and the shake compensation magnet 710 is reduced. It will return to the initial position.
  • FIG. 11 is a perspective view illustrating that a lens barrel, an autofocus carrier, an anti-shake carrier, a ball bearing, and a magnet are coupled to an autofocus coil holder of a base through a spring of the lens driving apparatus of the present invention.
  • 11 is a cross-sectional view of a part of the lens driving apparatus according to the exemplary embodiment of the present invention, which is cut away.
  • the autofocus driver 600 is coupled to the at least one autofocus magnet 610 and the base 200 coupled to the autofocus carrier 300 and at least one of which faces at least a portion of the autofocus magnet 610.
  • Autofocus coil 620 is included.
  • the autofocus coil 620 is coupled to the autofocus coil holder 220.
  • the autofocus coil 620 is formed to be wound around an optical axis. Specifically, the autofocus coil 620 is wound in a spiral or concentric shape around the optical axis using the autofocus coil holder 220 as a bobbin. Therefore, the inner circumferential surface of the autofocus coil 620 is for autofocus. It may be disposed to face the outer surface of the magnet 610. Here, a part of the autofocus carrier 300 may be located between the inner circumferential surface of the autofocus coil 620 and the outer surface of the autofocus magnet 610.
  • Both ends of the autofocus coil 620 may be connected to the coil connection terminal 242 of the flexible circuit board 240 to receive an electric signal from the outside.
  • the autofocus driver 600 drives the autofocus carrier 300 by an interaction between the autofocus magnet 610 and the autofocus coil 620. Specifically, a force in the optical axis direction is applied to the autofocus carrier 300 according to the magnetized polarity of the autofocus magnet 610 and the direction of the current applied to the autofocus coil 620.
  • the autofocus carrier 300 is moved in the optical axis direction by the autofocus driver 600.
  • moving in the optical axis direction means moving in the optical axis direction with respect to the base 200.
  • 8 and 9 illustrate only the autofocus coil holder 220 which is a part of the base 200, and the autofocus carrier 300 may move in the optical axis direction with respect to the autofocus coil holder 220.
  • the shake compensation carrier 400 positioned above the autofocus carrier 300 also moves in the optical axis direction.
  • the lens barrel 100 fixedly coupled to the shake compensation carrier 400 also moves in the optical axis direction.
  • the spring 800 supports the autofocus carrier 300 to be movable in the optical axis direction with respect to the base 200. Specifically, one end of the spring 800 is coupled to the base 200 portion and the other end is the autofocus carrier. It is coupled to the portion 300, and elastically deformed in the optical axis direction to support the movement of the autofocus carrier 300 in the optical axis direction.
  • the spring 800 may be formed in the form of a leaf spring.
  • the leaf spring 800 may include an outer circumferential portion 801 and an inner circumferential portion 802.
  • the inner circumference 802 may include a moving part 803 coupled to the autofocus carrier 300, and a connecting part 804 connecting the outer circumference part 801 and the moving part 803.
  • the leaf spring 800 may have an opening formed inside the inner circumference 802.
  • the moving part 803 of the leaf spring 800 may move in the optical axis direction with respect to the outer circumferential part 801. In this process, the connection part 804 may be elastically deformed.
  • the outer circumference 801 of the leaf spring 800 is a portion fixedly coupled to the moving part 803.
  • the outer circumference 801 of the leaf spring 800 is coupled to the base 200.
  • the outer circumferential portion 801 of the leaf spring 800 may be coupled to the autofocus coil holder 220 of the base 200.
  • the moving part 803 of the inner circumferential part 802 of the leaf spring 800 may be coupled to the autofocus carrier 300.
  • One or more springs 800 may be formed.
  • the spring 800 may be composed of an upper spring 810 and a lower spring 820.
  • the upper spring 810 may be coupled to an upper portion of the autofocus carrier 300 than the lower spring 820.
  • the upper spring 810 may be coupled to the vicinity of the upper surface of the autofocus carrier 300
  • the lower spring 820 may be coupled to the vicinity of the lower surface of the autofocus carrier 300.
  • the spring 800 is elastically deformed to support the movement.
  • the autofocus carrier 300 returns to the initial position by the restoring force of the spring 800.
  • FIG. 15 is a perspective view showing a lens barrel, an autofocus carrier, a shake compensation carrier, a ball bearing, and a magnet disposed opposite to a shake compensation coil of the lens driving device of the present invention.
  • FIG. 16 is a cross-sectional view of a portion of the lens driving apparatus according to the exemplary embodiment of the present invention, cut along the line GG ′ of FIG. 15.
  • FIG. 17 is a cross-sectional view of a portion of the lens driving apparatus according to the exemplary embodiment of the present invention, cut along the line HH ′ of FIG. 15.
  • the vibration correction driver 700 is coupled to the at least one vibration correction magnet 710 and the base 200 coupled to the vibration correction carrier 400, and at least one vibration that at least partially faces the vibration correction magnet 710.
  • the correction coil 720 is included.
  • the vibration correction coil 720 is coupled to the vibration correction coil holder 230.
  • the vibration compensation coil 720 is formed in a wound form about an axis in a direction orthogonal to the optical axis.
  • the vibration compensation coil 720 may be oriented in a direction orthogonal to each other with the autofocus coil 620.
  • the wound surface of the shake compensation coil 720 is disposed to face the side of the shake compensation magnet 710.
  • a plurality of vibration correction coils 720 may be formed to face the plurality of vibration correction magnets 710.
  • Both ends of the vibration correction coil 720 may be connected to the coil connection terminal 242 of the flexible circuit board 240 to receive an electric signal from the outside.
  • the shake compensation driver 700 drives the shake compensation carrier 400 by an interaction between the shake compensation magnet 710 and the shake compensation coil 720.
  • the shake compensation driving unit 700 may include a first shake correction driving unit and a second shake correction driving unit.
  • the first shake correction driving unit may be orthogonal to the second shake correction driving unit in a direction perpendicular to each other.
  • the first shake compensation driving unit may move the shake compensation carrier 400 in the x-axis direction
  • the second shake compensation driving unit may move the shake compensation carrier 400 in the y-axis direction.
  • the first and second shake compensation driver 700 may include a shake correction magnet 710 and a shake correction coil 720, respectively.
  • the magnet, the coil, and the magnet and the coil of the second shake compensation driver of the first shake compensation driver may be oriented to be orthogonal to each other.
  • Movement of the shake compensation carrier 400 in the direction orthogonal to the optical axis by the shake compensation driver 700 is performed in a state in which the shake compensation carrier 400 is supported by the ball bearing 500 on the autofocus carrier 300. It means to move.
  • the movement of the vibration correction carrier 400 by the vibration compensation driver 700 may be to compensate for the shaking of the camera module itself on which the lens driving apparatus is mounted due to hand shaking. Therefore, even if the camera module itself is shaken, a clear image can be obtained.
  • the position sensor 900 is coupled to the flexible circuit board 240.
  • the position sensor 900 is coupled to face the autofocus magnet 610 and / or the shake compensation magnet 710.
  • the position detection sensor 900 When the position detection sensor 900 is coupled to face the autofocus magnet 610, the position detection sensor 900 may detect a movement in the optical axis direction of the autofocus carrier 300.
  • the position sensor 900 may be a hall sensor that detects a change in magnetic force. As the distance between the position sensor 900 and the autofocus magnet 610 changes, the movement of the autofocus carrier 300 in the optical axis direction is detected.
  • the position detecting sensor 900 may detect a movement in the optical axis direction or a direction orthogonal to the optical axis of the shake compensation carrier 400.
  • the position sensor 900 may be a hall sensor.
  • the position detection sensor 900 may detect the movement of the optical axis direction of the shake compensation carrier 400. Can be.
  • the position detection sensor 900 when the position detection sensor 900 is arranged to detect a change in the magnetic force in accordance with the movement in the direction orthogonal to the optical axis of the shake compensation carrier 400, the position detection sensor 900 to the optical axis of the shake compensation carrier 400 The movement in the orthogonal direction can be detected.
  • the autofocus carrier 300 since the autofocus carrier 300 is supported by the spring 800, the autofocus carrier 300 may be stably driven.
  • the carrier is driven for the shake compensation, since the shake compensation carrier 400 is driven independently of the autofocus carrier 300, precise driving is possible.
  • the shake compensation carrier 400 and the shake compensation driver 700 after assembling the autofocus carrier 300 and the autofocus driver 600, it is possible to assemble the shake compensation carrier 400 and the shake compensation driver 700, so that the two processes may be separated. This can simplify the process and increase the efficiency.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Adjustment Of Camera Lenses (AREA)
  • Lens Barrels (AREA)

Abstract

L'invention concerne un dispositif d'entraînement de lentille. Un dispositif d'entraînement de lentille, qui a un barillet de lentille recevant une lentille, comprend : une base ; un support de mise au point automatique disposé sur la base ; une unité d'entraînement de mise au point automatique pour déplacer le support de mise au point automatique dans la direction de l'axe optique ; un support de stabilisation positionné sur la partie supérieure du support de mise au point automatique ; une unité d'entraînement de stabilisation pour déplacer le support de stabilisation dans la direction croisant l'axe optique à angle droit ; un ou plusieurs ressorts portant de manière à permettre au support de mise au point automatique de se déplacer par rapport à la base dans la direction de l'axe optique ; et un ou plusieurs roulements à billes positionnés entre le support de mise au point automatique et le support de stabilisation.
PCT/KR2016/002890 2016-03-22 2016-03-23 Dispositif d'entraînement de lentille WO2017164432A1 (fr)

Applications Claiming Priority (2)

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KR1020160033748A KR102595275B1 (ko) 2016-03-22 2016-03-22 렌즈 구동 장치
KR10-2016-0033748 2016-03-22

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112698465A (zh) * 2020-12-30 2021-04-23 维沃移动通信有限公司 摄像头模组及电子设备
WO2021159275A1 (fr) * 2020-02-11 2021-08-19 Huawei Technologies Co., Ltd. Appareil pour déplacer une unité de lentille
CN113934086A (zh) * 2020-06-26 2022-01-14 三星电机株式会社 相机模块及电子装置
CN114859628A (zh) * 2021-02-04 2022-08-05 三星电机株式会社 相机模块

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102154200B1 (ko) * 2018-12-07 2020-09-09 삼성전기주식회사 카메라 모듈

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013024944A (ja) * 2011-07-15 2013-02-04 Mitsumi Electric Co Ltd レンズ駆動装置
KR101421223B1 (ko) * 2014-03-25 2014-07-22 넥스타테크놀로지 주식회사 자동 초점 및 손떨림 보정기능을 구비한 카메라 모듈
KR101518825B1 (ko) * 2013-11-08 2015-05-13 자화전자(주) 카메라 모듈 액츄에이터
KR20150117237A (ko) * 2015-09-25 2015-10-19 자화전자(주) 카메라 렌즈 모듈
KR20160023386A (ko) * 2014-08-22 2016-03-03 엘지이노텍 주식회사 렌즈 구동 장치

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102166262B1 (ko) * 2013-06-10 2020-10-15 삼성전자주식회사 카메라 렌즈 어셈블리
KR101725442B1 (ko) * 2014-03-07 2017-04-11 자화전자(주) 카메라 렌즈 모듈
JP5760116B2 (ja) * 2014-04-14 2015-08-05 シャープ株式会社 カメラモジュール

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013024944A (ja) * 2011-07-15 2013-02-04 Mitsumi Electric Co Ltd レンズ駆動装置
KR101518825B1 (ko) * 2013-11-08 2015-05-13 자화전자(주) 카메라 모듈 액츄에이터
KR101421223B1 (ko) * 2014-03-25 2014-07-22 넥스타테크놀로지 주식회사 자동 초점 및 손떨림 보정기능을 구비한 카메라 모듈
KR20160023386A (ko) * 2014-08-22 2016-03-03 엘지이노텍 주식회사 렌즈 구동 장치
KR20150117237A (ko) * 2015-09-25 2015-10-19 자화전자(주) 카메라 렌즈 모듈

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021159275A1 (fr) * 2020-02-11 2021-08-19 Huawei Technologies Co., Ltd. Appareil pour déplacer une unité de lentille
CN115087900A (zh) * 2020-02-11 2022-09-20 华为技术有限公司 一种用于移动透镜单元的装置
CN115087900B (zh) * 2020-02-11 2023-10-20 华为技术有限公司 一种用于移动透镜单元的装置
CN113934086A (zh) * 2020-06-26 2022-01-14 三星电机株式会社 相机模块及电子装置
CN113934086B (zh) * 2020-06-26 2024-01-16 三星电机株式会社 相机模块及电子装置
CN112698465A (zh) * 2020-12-30 2021-04-23 维沃移动通信有限公司 摄像头模组及电子设备
CN114859628A (zh) * 2021-02-04 2022-08-05 三星电机株式会社 相机模块

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