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. 21, 2025
Filed:
Jun. 21, 2021
Toray Industries, Inc., Tokyo, JP;
Toray Industries, Inc., Tokyo, JP;
Abstract
A plastic optical fiber that has a multilayer structure that includes a core (X), a first cladding (Y), and a second cladding (Z), wherein the core is made of an organic polymer material having a water-absorbing ratio of not less than 0.001% and not more than 0.29% and a total light transmittance of not less than 80% and containing not less than 0.01% by weight and not more than 10% by weight of a plasticizer; a relationship between a refractive index of the core (X) and the refractive index of the first cladding (Y) is defined by inequality: X−Y>0.01, and a relationship between a refractive index of the first cladding (Y) and the refractive index of a second cladding (Z) is defined by inequality: Y−Z>0.05, wherein the plastic optical fiber has high humidity resistance and excellent bending resistance.