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:
Nov. 04, 2003
Filed:
Jan. 28, 2000
Hideo Yamaguchi, Fukuoka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
There is disclosed an optical pickup apparatus in which an optical axis of an objective lens can be kept perpendicular to a recording surface of an optical disk regardless of a warp or a curvature of the optical disk. In this optical pickup apparatus, a lens holder can be moved in a focusing direction and a tracking direction. In order that the objective lens can be tilted in accordance with a skew of the optical disk in a radial direction, second magnets are mounted on the lens holder whereas second coils are mounted in opposed relation to the second magnets, respectively. The second magnets and the second coils cooperate with each other to tilt the objective lens.