Nondestructive measurement of oxygen level in a tungsten-halogen

Details Nondestructive measurement of oxygen level in a tungsten-halogen Nondestructive measurement of oxygen level in a tungsten-halogen

1983-11-16

1986-05-20

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Electric lamp or discharge device

Electric lamp

H01J 942

Patent

active

045904294

ABSTRACT:
A previously unlit tungsten filament bulb with a fill gas is flashed for about one second to form a dispersion of tungsten oxide particles therein. In a preferred embodiment, a laser beam is passed through the dispersion and the scattered light is detected to provide a measure of the oxygen content of the bulb.

REFERENCES:
patent: 2664543 (1953-12-01), Thayer
patent: 3249859 (1966-05-01), Speros
patent: 3569766 (1971-03-01), Larson
patent: 4005324 (1977-01-01), Dolenga
patent: 4037964 (1977-07-01), Wertheimer
patent: 4053229 (1977-10-01), McCluney

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