Patent ID: 6504813
Filing Date: 2003-01-07
Classification: G11B

Abstract:
An apparatus for driving an objective lens for use with a disk player, comprising a movable lens holder provided with driving coils and the objective lens, and a magnetic flux producing assembly for producing magnetic flux to the driving coils to move the objective lens in tracking and focusing directions of a disk,wherein the driving coils comprise at least one set of two tracking coils, each of the tracking coils having a flat coil face, wherein the magnetic flux producing assembly produces a first magnetic flux orthogonal to a coil face of each of the tracking coils in a first area including a first part of each of the tracking coils, and a second magnetic flux in a second area including a second part of each of the tracking coils other than the first part, said second magnetic flux having a direction opposite to that of the first magnetic flux, and wherein at least a portion of a boundary surface between the first and second areas is inclined from a focusing direction of the objective lens.