Light-transmitting fiber
First Claim
Patent Images
1. A light-transmitting fiber comprising a core component and a sheath component covering the core component, the core component consisting essentially of a polymer comprising 2% to 100% by weight of ring structure units represented by the following general formula (I):
- ##STR3## wherein R stands for a hydrogen atom or an aliphatic, alicyclic, or aromatic hydrocarbon group having 1 to 20 carbon atoms,and 0% to 98% by weight of monomer units composed mainly of methyl methacrylate, and the sheath component being composed of a polymer having a refractive index smaller by at least 1% than that of the polymer of the core component.
1 Assignment
0 Petitions
Accused Products
Abstract
A plastic light-transmitting fiber having a core-sheath structure. A polymer having methacrylimide or N-substituted methacrylimide units is used for the core component. A polymer having a refractive index smaller by at least 1% than that of the polymer of the core component is used for the sheath component. The heat resistance of the light-transmitting fiber is highly improved.
-
Citations
9 Claims
-
1. A light-transmitting fiber comprising a core component and a sheath component covering the core component, the core component consisting essentially of a polymer comprising 2% to 100% by weight of ring structure units represented by the following general formula (I):
- ##STR3## wherein R stands for a hydrogen atom or an aliphatic, alicyclic, or aromatic hydrocarbon group having 1 to 20 carbon atoms,
and 0% to 98% by weight of monomer units composed mainly of methyl methacrylate, and the sheath component being composed of a polymer having a refractive index smaller by at least 1% than that of the polymer of the core component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- ##STR3## wherein R stands for a hydrogen atom or an aliphatic, alicyclic, or aromatic hydrocarbon group having 1 to 20 carbon atoms,
Specification