Tungsten halogen incandescent lamps containing mixed halogens

Details Tungsten halogen incandescent lamps containing mixed halogens Tungsten halogen incandescent lamps containing mixed halogens

1982-06-21

1985-07-30

Moore, David K.

Electric lamp and discharge devices

With gas or vapor

Incandescent filament lamp

313637, H01K 150

Patent

active

045324557

ABSTRACT:
The invention provides a tungsten halogen linear incandescent lamp having a gas fill comprising a mixture of CHI.sub.3 and (PNBr.sub.2).sub.3. Gas fills according to the invention comprise from 6 to 32 micrograms of (PNBr.sub.2).sub.3 per c.c. of the lamp internal volume with a ratio of CHI.sub.3 to (PNBr.sub.2).sub.3 of from 1:1 to 5:1 and result in lamps having a increased efficacy and a life of more than 2,000 hours.

REFERENCES:
patent: 3738729 (1973-06-01), Coxon et al.
patent: 3898500 (1975-08-01), Johnston et al.
patent: 3919578 (1975-11-01), Coaton et al.
patent: 3930178 (1975-12-01), Coaton

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