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:
Feb. 08, 2005
Filed:
Oct. 19, 2000
Tatsuki Wade, Nagano, JP;
Hiroshi Sugihara, Nagano, JP;
Tatsuki Wade, Nagano, JP;
Hiroshi Sugihara, Nagano, JP;
Sankyo Seiki Mfg. Co., Ltd., Nagano-ken, JP;
Abstract
An optical pickup apparatus has an objective lens that converges a laser beam on an optical recording medium and a lens holder that retains objective lens. The optical pickup apparatus also has a base member, four linear members having base ends supported by the base member and distal ends coupled to the lens holder. A driving device generates a magnetic force between the lens holder and the base member to elastically deform the linear members to thereby drive the objective lens in a focusing direction and/or a tracking direction. The four linear members have generally an identical configuration, and at least one portion of each of the four linear members in a longitudinal direction thereof has a cross section that is compressed and deformed in the focusing direction and/or tracking direction.