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:
Aug. 31, 2004
Filed:
Jun. 30, 2000
Kazuo Shiba, Nagano, JP;
Fumio Kobayashi, Nagano, JP;
Kabushiki Kaisha Sankyo Seiki Seisakusho, Nagano, JP;
Abstract
A grating mounting section for mounting a laser diode and a diffraction grating element is formed in a frame body of an optical pickup device. The diffraction grating element includes a main body provided with a grating face , a holder being integral with the main body while surrounding the same, and an arm portion protruded outward from the outer circumferential face of the holder as viewed in the radial direction. The arm portion is protruded outward through a groove formed in the grating mounting section of the frame body side. An angular position adjustment of the diffraction grating element can be carried out by turning the arm portion about the optical axis.