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:
Feb. 11, 2003
Filed:
May. 31, 2000
Applicant:
Inventors:
Masataka Izawa, Saitama-ken, JP;
Kiyoshi Takei, Saitama-ken, JP;
Assignee:
Pioneer Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/12 ;
U.S. Cl.
CPC ...
G02B 6/12 ;
Abstract
An optical integrated device is used in an optical pickup device which irradiates a light onto an optical information storage medium and receives a reflected light reflected by the storage medium. The optical integrated device includes: a light wave coupling element for generating at least a guided light from the reflected light; an optical waveguide unit for propagating the guided light, the optical waveguide unit including a multiple optical waveguides and at least a clad layer formed between the optical waveguides; and a light receiving element for receiving the light from the optical waveguide unit.