Patent ID: 6747921
Filing Date: 2004-06-08
Classification: G11B

Abstract:
An apparatus for driving an objective lens, comprising:a base which is moved along an optical disk; an objective lens disposed so as to be opposed to the optical disk and having an optical axis in a vertical direction with respect to the optical disk, for optically recording information onto the optical disk or optically reproducing information from the optical disk; a holder portion for holding the objective lens; a plurality of elastic arms extending between the base and the holder portion in a tangent direction of the optical disk, for supporting the holder portion moveably with respect to the base; and a driving portion for generating an electromagnetic force for moving the holder portion with respect to the base, wherein the plurality of elastic arms are disposed away from each other in the vertical direction, the base includes a plurality of moveable portions for supporting, respectively, one end of each of the elastic arms, and each of the movable portions is supported at each position in a vertical direction outside of one end of each of the elastic arms, so as to be elastically pivotable around each axis in a radius direction of the optical disk.