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:
Apr. 24, 2012
Filed:
Jan. 29, 2007
Katsuhiko Kimura, Kasumigaura, JP;
Hidenao Saito, Yokohama, JP;
Jun Hato, Yokohama, JP;
Takahiro Yamaguchi, Yokohama, JP;
Katsuhiko Kimura, Kasumigaura, JP;
Hidenao Saito, Yokohama, JP;
Jun Hato, Yokohama, JP;
Takahiro Yamaguchi, Yokohama, JP;
Hitachi Media Electronics Co., Ltd., Iwate-ken, JP;
Abstract
An optical pickup in which the position of a magnet can be adjusted with respect to a yoke is provided. The optical pickup has an objective lens, a lens holder that holds the objective lens, a magnet disposed opposite to a side surface of the lens holder, and a yoke to the inside of which the magnet is attached. The yoke has an opening at least near the bottom of the magnet, through which the magnet can be visually observed from the outside of the yoke, the bottom being on the side of the yoke that is farther from an optical disc and the top being on the side of the yoke that is closer to the optical disc along the optical axis of the objective lens.