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:
Mar. 16, 1993
Filed:
Jul. 12, 1990
Masataka Shiba, Yokohama, JP;
Kazumi Kawamoto, Yokohama, JP;
Yasuo Hira, Yokohama, JP;
Akira Inagaki, Yokohama, JP;
Hidemi Sato, Yokohama, JP;
Kenchi Ito, Yokohama, JP;
Atsuko Fukushima, Yokohama, JP;
Ryuichi Funatsu, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Using an optical pickup, recording/reproducing of information is performed by irradiating light beams to an optical recording medium to form light spots. The optical pickup includes means for generating plural light beams, an optical waveguide for guiding the plural light beams in a row into a flat space, and a light deflecting element for deflecting the light beams, which run in the optical waveguide, within a plane formed by a vector perpendicular to a plane of the optical waveguide and a directional vector of the light beams. The light deflecting element deflects the plural light spots, which are to be arranged in a row, in a direction perpendicular to the light spot row to perform micro seek.