Patent ID: 8670195
Filing Date: 2014-03-11
Classification: G02B

Abstract:
1. A lens actuator comprising: a movable unit that includes a first OIS coil that is located on an opposite side to the axis with respect to the first magnet and farther from the axis than 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 farther from the axis than the second magnet, wherein the first to fourth magnets are arranged to generate a first magnetic field reaching the first AF coil, the first magnet is arranged to generate a second magnetic field reaching the first OIS coil, the second magnet is arranged to generate a third magnetic field reaching the second OIS coil, the first AF coil is arranged to flow a first current there through to move the carrier in a vertical direction along the axis due to a force generated by the first magnetic field and the first current flowing through the first AF coil, and the first OIS coil is arranged to flow a second current therethrough, to move the movable unit in a front-back direction, which is perpendicular to the vertical direction, due to a force generated by the first magnetic field and the second current flowing through the first AF coil, and the second OIS coil is arranged to flow a third current therethrough to move the movable unit in a left-right direction, which is perpendicular to the vertical direction and different from the front-back direction, due to a force generated by the third magnetic field and the third current flowing through the second AF coil.