LENS ACTUATOR
First Claim
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.
1 Assignment
0 Petitions
Accused Products
Abstract
A lens actuator includes a carrier that is configured to retain a lens; a first AF coil that is disposed in the carrier while wound about an axis perpendicular to a lens retaining surface; first to fourth magnets that are disposed opposite the first AF coil in four directions parallel to the lens retaining surface; a first OIS coil that is disposed opposite the first magnet; and a second OIS coil that is disposed opposite the second magnet. A current is passed through the first AF coil to move the carrier in a vertical direction along an axis. The currents are passed through the first and second OIS coils to a movable unit in front-back and left-right directions. Therefore, weight reduction of the movable unit can be achieved to provide a lens actuator, in which electric power saving can be achieved.
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Citations
6 Claims
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1. A lens actuator comprising:
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a movable unit that includes a 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, and first 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, wherein the first AF coil is arranged to flow a current there through to move the carrier in a vertical direction along the axis, and the 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. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification