Patent ID: 6657944
Filing Date: 2003-12-02
Classification: G11B

Abstract:
An objective lens driving device comprising:an objective lens for recording on or reproducing from a disk; a lens holder for holding the objective lens; a damage prevention system for preventing the disk and the objective lens from being damaged by a collision of the objective lens or the lens holder with the disk; a base; a supporting member for supporting the lens holder elastically with respect to the base; and a driving system for moving the lens holder at least in a direction substantially parallel to an optical axis of the objective lens with respect to the base; wherein the damage prevention system comprises a substantially spherical protecting member formed of an elastic member and a fitting portion that is provided in the lens holder and in which the protecting member is inserted while being deformed; and wherein the fitting portion has a slot shape, a width smaller than a diameter of the protecting member and a depth greater than a radius of the protecting member.