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:
Jan. 05, 2010
Filed:
Jul. 29, 2005
Manabu Ochi, Fujisawa, JP;
Katsuhiko Kimura, Kasumigaura, JP;
Masaya Horino, Yasato, JP;
Junichi Senga, Yokohama, JP;
Masayoshi Watanabe, Yokohama, JP;
Tetsuo Itou, Yokohama, JP;
Manabu Ochi, Fujisawa, JP;
Katsuhiko Kimura, Kasumigaura, JP;
Masaya Horino, Yasato, JP;
Junichi Senga, Yokohama, JP;
Masayoshi Watanabe, Yokohama, JP;
Tetsuo Itou, Yokohama, JP;
Hitachi Media Electronics Co., Ltd., Iwate-ken, JP;
Abstract
To improve the reliability to an environmental temperature change of an optical pickup, an optical pickuphas a semiconductor laserfor generating a laser beam. An objective lens drive leads the laser beam to a predetermined position of a disk. The semiconductor laser and objective lens drive are mounted on a pickup hosing. The objective lens drive has a movable portionand the movable portion has an objective lensfor condensing the laser beam on the recording face of the disk. A fixed portionholds the movable portion through a support member. The fixed portion has a magnetic yoke. An extended portion formed by extending a part of the yoke to the fixed portion side and the upsideof a cutout formed at the intermediate portion of the fixed portion in the tracking direction are adhered and fixed.