Method of making optical glass article

Details Method of making optical glass article Method of making optical glass article

1991-03-29

1993-06-08

Jones, W. Gary

Glass manufacturing

Processes

Forming product or preform from molten glass

65 2, 65 182, 65DIG16, C03B 37014

Patent

active

052175162

ABSTRACT:
A refractive index profile in a glass article is easily controlled by heating a solid or hollow cylindrical glass soot preform in an atmosphere comprising a fluorine-containing compound under such conditions that a partial pressure of the fluorine-containing compound is changed as the heating proceeds so as to control a fluorine concentration in a radial direction of the optical glass article.

REFERENCES:
patent: 4593050 (1986-06-01), Cohen
patent: 4610709 (1986-09-01), Kawauchi
patent: 4618354 (1986-10-01), Suda
patent: 4620861 (1986-11-01), Berkey
patent: 4629485 (1986-12-01), Berkey
patent: 4693738 (1987-09-01), Hoshikawa

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