The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 11, 2007
Filed:
Jul. 02, 2004
Applicants:
IN Ho Choi, Seongnam-si, KR;
Sam Nyol Hong, Suwon-si, KR;
Inventors:
In Ho Choi, Seongnam-si, KR;
Sam Nyol Hong, Suwon-si, KR;
Assignee:
LG Electronics Inc., Seoul, KR;
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention discloses an optical pickup actuator including a lens holder having an object lens, and a driving means for changing a position of the lens holder by using an electromagnetic force. The driving means includes multipolar magnets and tracking coils for changing the position of the lens holder to the tracking direction, each of the tracking coils has a top coil, a bottom coil and side coils, and the whole or part of the side coils has an angle smaller than 90° to a horizontal line.