Patent ID: 8699136
Filing Date: 2014-04-15
Classification: G02B,G03B,H04N

Abstract:
1. An apparatus for adjusting a position of an optical element, the apparatus comprising: a support; a movement unit that supports an optical element and is movable relative to the support; a magnet unit disposed on a member selected from the group consisting of the support and the movement unit; a coil unit disposed on the other member of the group consisting of the support and the movement unit to correspond to the magnet unit and generates a magnetic force for moving the movement unit when an electrical signal is applied; a sensor unit disposed in a position corresponding to the magnet unit and detects a relative position of the movement unit with respect to the support; a locking unit disposed between the support and the movement unit, wherein the locking unit limits or allows movement of the movement unit; and a controlling unit connected to the coil unit that controls the coil unit and determines whether the movement unit is in a state where movement of the movement unit is limited by the locking unit, based on a signal output from the sensor unit.