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. 30, 1976
Filed:
Feb. 22, 1973
Applicant:
Inventors:
Hirosuke Furuta, Kawasaki, JA;
Hideki Noda, Mitaka, JA;
Assignee:
Fujitsu Limited, Kawasaki, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 / ; 350 / ; 427163 ;
Abstract
A dielectric thin film optical transmission device in which a dielectric substrate has formed thereon a dielectric thin film of a refractive index larger than that of the substrate and the dielectric thin film has formed thereon in a desired pattern a dielectric layer of a refractive index smaller than that of the dielectric thin film and in which the dielectric thin film underlying the dielectric layer chiefly serves as a light waveguide to transmit light therethrough.