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:
Aug. 28, 2012
Filed:
Dec. 04, 2007
Goichi Akanuma, Kanagawa, JP;
No-cheol Park, Seoul, KR;
Dong-ju Lee, Seoul, KR;
Myeong-gyu Song, Seoul, KR;
Yang-hyun Seok, Seoul, KR;
Goichi Akanuma, Kanagawa, JP;
No-Cheol Park, Seoul, KR;
Dong-Ju Lee, Seoul, KR;
Myeong-Gyu Song, Seoul, KR;
Yang-Hyun Seok, Seoul, KR;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An objective lens drive apparatus configured to drive an objective lens that focuses a laser beam on an optical disk is disclosed, the apparatus including a holding member that holds the objective lens; at least one pair of drive magnets arranged to face each other at opposite sides of the holding member with respect a tangential direction that is parallel to a tangential line of the optical disk, the drive magnets having protruding end portions that protrude from each side of the holding member with respect to a tracking direction that is parallel to a radial direction of the optical disk; and plural drive coils configured to drive the holding member through interaction with the drive magnets, at least one of the drive coils being arranged on each side of the drive magnets with respect to the tangential direction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile