Refractory-bonded glass fibers

US5208890A · kind A · utility

Assignee

• Schott Glaswerke · DE

Inventors

• Matthias Kohler · Grafenau, DE
• Rudolf Wolter · Schweinfurt, DE

Key dates

• Filing date: Feb 6, 1992
• Grant date: May 4, 1993
• Expiry date: Feb 6, 2012

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/04
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

High-temperature resistant fiber optic units are produced by coating individual glass fibers, either individually or in a bundle of fibers and with or without encasing the coated fiber or fiber with a sheath or sleeve, a liquid silica sol bonding agent which optionally contains an inorganic filler and then hardening the coated fiber, bundle of fibers or a plurality of the bundles with heat or under vacuum, to produce a fiber optic unit which can be stressed at temperatures of up to about 600.degree. C.