OBJECTIVE LENS DRIVING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an objective lens driving device capable of improving the tracking driving sensitivity and restraining the generation of a tilt when a movable part performs tracking operation and focusing operation. SOLUTION: The device is provided with a magnet, which has a nearly rectangular focusing coil and a nearly rectangular tracking coil which are fixed to a lens holder in order to drive a lens holder holding an objective lens and which are arranged on the same flat surface, in which inverse magnetic poles are respectively and oppositely arranged in the winding parts of two sides orthogonal to the focusing direction of the focusing coil and in which inverse magnetic poles are respectively and oppositely arranged in the winding parts of two sides orthogonal to the tracking direction of the tracking coil.