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. 22, 2001
Filed:
Nov. 04, 1999
Applicant:
Inventors:
Assignee:
Bridgestone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/00 ;
U.S. Cl.
CPC ...
G02B 6/00 ;
Abstract
A light transmitting tube,, which can significantly reduce the loss of light at a bent portion, comprises a tubular cladding,and a solid core,made of material having reflection index higher than that of the material for the tubular cladding,. The cladding,has rigidity higher than the core,. The core,and the cladding,are not bonded to each other. As the light transmitting tube,is bent, an air layer,is appears between the core,and the cladding