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LENS ACTUATOR

  • US 20120314307A1
  • Filed: 06/01/2012
  • Published: 12/13/2012
  • Est. Priority Date: 06/09/2011
  • Status: Active Grant
First Claim
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1. A lens actuator comprising:

  • a movable unit that includesa carrier retaining a lens such that the lens is located along a lens retaining surface,a first AF coil being disposed in the carrier and wound about an axis perpendicular to the lens retaining surface, andfirst to fourth magnets being disposed to face the first AF coil in four directions parallel to the lens retaining surface;

    a first OIS coil that is located on an opposite side to the axis with respect to the first magnet and disposed opposite the first magnet; and

    a second OIS coil that is located on an opposite side to the axis with respect to the second magnet and disposed opposite the second magnet, whereinthe first AF coil is arranged to flow a current there through to move the carrier in a vertical direction along the axis, andthe first OIS coil and the second OIS coil are arranged to flow first and second currents therethrough, respectively, to move the movable unit in a front-back direction, which is perpendicular to the vertical direction, and a left-right direction, which is perpendicular to the vertical direction and different from the front-back direction.

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