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:
Feb. 26, 2019
Filed:
Dec. 22, 2015
Kuraray Co., Ltd., Kurashiki-shi, JP;
Ryuichi Iwakawa, Tainai, JP;
KURARAY CO., LTD., Kurashiki-shi, JP;
Abstract
An optical fiber rod () according to the present invention includes a center region (), an outer region () formed around the center region (), and an intermediate region () formed between the center region () and the outer region (), and satisfies nA>nB>nC where nA is the refractive index of a material A produced by polymerization of a monomer ma, nB is the refractive index of a material B produced by polymerization of a monomer mb, and nC is the refractive index of a material C produced by polymerization of a monomer mc. The center region () is made of a material produced by polymerization of a monomer mixture containing the monomer ma, the outer region () is made of a material produced by polymerization of a monomer mixture containing the monomer mc, and the intermediate region () is made of a material produced by polymerization of a monomer mixture containing the monomer mb. The refractive index decreases in the order: the center region ()>the intermediate region ()>the outer region ().