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:
Oct. 07, 1986
Filed:
Feb. 22, 1984
Applicant:
Inventors:
Koichi Tsuno, Osaka, JP;
Kunio Fujiwara, Kanagawa, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 9633 ; 350 9625 ; 350 9626 ; 350 9623 ;
Abstract
An image fiber in which the contrast of the viewed image is improved. The image fiber of the invention is composed of a plurality of optical fiber cores with a cladding layer provided around the cores and filled into the spaces between the cores. A primary coating covers the cores and cladding layer. The primary coating contains a light-absorbing substance, for instance, carbon particles. Preferably, the primary coating is composed mainly of silicone resin.