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:
Oct. 07, 2008
Filed:
Oct. 23, 2003
Koji Ieki, Ehime, JP;
Hiroshi Yamamoto, Yawata, JP;
Yoshihiro Ikawa, Higashiosaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In order to obtain a preferred recording/reproducing characteristic in an apparatus for optical disks having higher density, an objective lens drive is provided for driving an objective lens () in the optical axis direction, a direction perpendicular to the optical axis, and a tilting direction along the radius of an optical disk, by which operating sensitivity is improved and a stable operating characteristic is realized. Sections of two () of six fixing portions (to) for supporting six support members (to) which support a movable part (), are set lower in stiffness than another sections of the other four fixing portions (), thereby improving the operating sensitivity of the movable part () and stabilizing the operation of the movable part ().