Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1975-07-08
1976-11-09
Lindsay, Jr., Robert L.
Glass manufacturing
Processes
Forming product or preform from molten glass
65 13, 219121LM, C03B 3702
Patent
active
039908739
ABSTRACT:
A process and an apparatus for pulling cladded light conducting fibers from one end of a blank characterized by utilizing a blank having a hollow tubular core with an exterior casing, directing laser radiation, which will be absorbed by the material of the blank, axially along the blank to heat the one end to create a melting zone from which the cladded fiber is pulled. To aid in directing the laser radiation an optical element is mounted on the open end of the tube to move therewith and to aid in concentrating the radiant energy at the melting zone the one end is positioned at a focal point of substantially spherical reflecting surface so that heat radiating therefrom is reflected and concentrated at the melting zone.
REFERENCES:
patent: 2825183 (1958-03-01), Riedel
patent: 3521192 (1970-07-01), DeMaria et al.
patent: 3711262 (1973-01-01), Keck et al.
patent: 3865564 (1975-02-01), Jaeger et al.
Beck, heir by Erna
Knetzlstorfer, deceased Anton
Knetzlstorfer, heir by Christine
Knetzlstorfer, heir by Hans
Lindsay, Jr. Robert L.
Siemens Aktiengesellschaft
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