Method and apparatus for adjusting position of optical element

摘要

An apparatus for adjusting a position of an optical element is disclosed. The apparatus includes: a support; a movement unit for supporting an optical element and being movable relative to the support; a magnet unit; a coil unit for generating 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 for detecting a relative position of the movement unit with respect to the support; a locking unit for limiting or allowing movement of the movement unit; and a controlling unit connected to the coil unit for controlling the coil unit and determining 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.

主权项

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 being movable relative to the support; a magnet unit disposed on one 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, the coil unit 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, the sensor unit detects a relative position of the movement unit with respect to the support; a locking unit that limits or allows movement of the movement unit, wherein the locking unit comprises:
a first locking member disposed on the support to be separable from an outside of the movement unit, wherein the first locking member is selected from the group consisting of a magnet and a yoke; anda second locking member disposed on the movement unit to correspond to the first locking member, wherein the second locking member is the other member of the group consisting of the magnet and the yoke; and a controlling unit connected to the coil unit for controlling the coil unit in order to rotate the movement unit for limiting or allowing movement of the movement unit and determining 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.