Objective lens driving device for laser optical head

Application Number: 00109277
Application Date: 2000.06.20
Publication Number: 1296259
Publication Date: 2001.05.23
Priority Information: 1999/11/10 KR 49645/1999
International: G11B7/09;G11B21/10
Applicant(s) Name: Samsung Electric-Mechanics Co., Ltd.
Inventor(s) Name: Chong Gi-Moon
Patent Agency Code: 11219
Patent Agent: xie lina
Abstract An objective lens driving apparatus of an optical pickup is provided, which includes a fixed part; a blade fixed on the fixed part moving along the focus and the tracking direction; an objective lens mounted thereof; a focus coil rolling on the outside of the center; a batch of tracking coil mounted on the four corners of the both side of the blades; a exterior yoke disposed on both sides of the blade; a main magnet mounted between the end of the blade and the adjacent tracking coil; two auxiliary magnets having the opposite polarity on the outside of the main magnet; an inside yoke mounted in the insertion slot of the blade end. Because there is disposed the auxiliary magnets, the objective lens tracking induction intensity is improved evidently and it is suitable to a variety of high-speed optical head, such as video disc player.