Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Utilizing plasma – electric – electromagnetic – particulate – or...
Patent
1989-04-10
1991-03-12
Lowe, James
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Utilizing plasma, electric, electromagnetic, particulate, or...
264 15, B29D 1100
Patent
active
049991418
ABSTRACT:
The present invention provides a method of manufacturing an optical fiber of high heat-resisting and light-receiving properties as well as greater flexibility. The optical fiber of the present invention comprises a core made of a setting type transparent silicone rubber, and an outer portion made of a high molecular weight transparent substance whose refractive index is at least 0.02 less than that of the core. Silicon rubber is injected into the cylindrical outer portion and set, and the silicone rubber and the outer portion are thereafter subjected to heat treatment at a temperature of 120.degree. C. or more for at least 1 hour.
REFERENCES:
patent: 4161500 (1979-07-01), Schleinitz et al.
patent: 4541979 (1985-09-01), Cooke et al.
patent: 4564263 (1986-11-01), Ueba et al.
patent: 4708833 (1987-11-01), Ohsawa et al.
Saen Haruo
Ueno Keiji
Lowe James
Sumitomo Electric Industries Ltd.
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