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:
Nov. 06, 2001
Filed:
Mar. 23, 1999
Takeshi Takahashi, Tokorosawa, JP;
Tajima Hidemi, Hamura, JP;
Hiroshi Kato, Akishima, JP;
Hisayoshi Toratani, Tokyo, JP;
Hoya Corporation, Tokyo, JP;
Abstract
A light polarizing glass article comprising a base glass and metallic copper particles dispersed in said base glass wherein said metallic copper particles have aspect ratios in the range of from about 2:1 to 15:1 and said base glass is selected from the group consisting of silicate, borosilicate, borate and phosphate glasses which contain at least one reductant element. The article is prepared by heating a batch of glass containing copper and halogen containing constituents to develop copper halide particles in the glass, elongating said glass containing copper halide particles at a temperature where said glass exhibits a viscosity of from 1×10,to 1×10,poises, and reducing at least a portion of the copper halide particles in the elongated glass to produce metallic copper particles therein. An optical isolator employing the above light polarizing glass articles is also provided.