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. 09, 2001
Filed:
Oct. 20, 1998
Applicant:
Inventor:
Hayato Yuuki, Yokkaichi, JP;
Assignee:
Sumitomo Wiring Systems, Ltd., Yokkaichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/26 ;
U.S. Cl.
CPC ...
G02B 6/26 ;
Abstract
A light-relay element is interposed between a light-emitting end face of a plastic optical fiber and a light-receiving face of a light receptor such as a photo-diode unit. The light-relay is in the form of a fiber and has a graded index. The light-relay element contains a core portion, the diameter of which decreases gradually from the end adjacent the fiber to the end adjacent the photo-diode unit. This configuration enables minimization of the connection loss between the fiber and the light receptor.