Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1990-09-27
1992-04-21
Fisher, Richard V.
Glass manufacturing
Processes
Forming product or preform from molten glass
65 182, 385127, 156643, 156662, 427163, C03C 2502
Patent
active
051064022
ABSTRACT:
In the manufacture of preforms for optical fibres, the materials of the core (.alpha.) and of the light-conducting cladding layer (.beta..sub.1) are previously deposited from the gaseous phase. Deposition time is here considerably reduced in that only the materials of the core (.alpha.) and a part of the light-conducting cladding layer (.beta..sub.1) are deposited from the gaseous phase and the remaining light-conducting cladding material (.beta..sub.2 +.beta..sub.3) is supplied as pre-formed tubes of cladding material.
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Geittner Peter E. E.
Hagemann Hans-Jurgen E.
Lydtin Hans-Jurgen
Bruckner John J.
Fisher Richard V.
Fox John C.
Rhyne Lesley A.
U.S. Philips Corp.
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