Patent ID: 6744722
Filing Date: 2004-06-01
Classification: G11B

Abstract:
An optical pickup actuator, comprising:a lens holder with an object lens for focusing an optical beam onto an information recording surface of an optical disc and having a hole at a center portion; focusing/tilt operating means installed inside the hole of the lens holder and generating a magnetic force so as to operate the lens holder in a focusing direction and a radial tilt direction, wherein the focusing/tilt operating means is constructed with a pair of first magnets fixed inside the hole of the lens holder and a pair of focusing coils fixed to a pickup base, projected into the hole of the lens holder and mutually operating with the pair of first magnets, and wherein when a current flows to the pair of focusing coils in the same direction, a movement of the lens holder in the focusing direction is performed, and when a current flows to the pair of focusing coils in different directions, a movement of the lens holder in the radial tilt direction is performed; and tracking operating means respectively installed at the right and the left sides of the lens holder and generating magnetic force in order to operate the lens holder in a tracking direction.