Essentially colorless silver-containing glasses through ion exch

Details Essentially colorless silver-containing glasses through ion exch Essentially colorless silver-containing glasses through ion exch

1990-03-19

1991-04-16

Lindsay, Robert L.

Glass manufacturing

Processes

With chemically reactive treatment of glass preform

65 314, 350 9634, 350164, 501 13, 501 78, C03C 2100

Patent

active

050079484

ABSTRACT:
This invention relates to the production of an essentially colorless alkali meal oxide-Al.sub.2 O.sub.3 and/or B.sub.2 O.sub.3 -SiO.sub.2, wherein at least a portion thereof contains silver ions resulting from an ion exchange reaction wherein Ag.sup.+ ions from an external source are exchanged with alkali metal ions in the glass. The amount of exchange can be varied across a portion of the glass to impart a gradient in refractive index thereto. Such technology is especially suited to the optical engineering field, particularly the making of high performance fiber-optic components.

REFERENCES:
patent: 3703388 (1972-11-01), Araujo et al.
patent: 3765913 (1973-10-01), Murakami et al.
patent: 3873408 (1975-03-01), Hensler
patent: 4108621 (1978-08-01), Asahara et al.
patent: 4191547 (1980-03-01), Wu

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