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:
May. 09, 1989
Filed:
Jan. 08, 1986
Applicant:
Inventors:
Yoshinobu Ueba, Osaka, JP;
Norifumi Matsumiya, Osaka, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 9634 ; 264-15 ; 350 9630 ;
Abstract
An optical waveguide for illumination comprising a core made of a transparent polymer having a glass transition temperature not higher than 50.degree. C. and a cladding made of a polymer having a lower refractive index than that of the core, which has good light transmission property and flexibility and is useful as an illumination element of an optical sensor.