Halogen incandescent lamp

Details Halogen incandescent lamp Halogen incandescent lamp

1980-06-05

1982-11-30

Demeo, Palmer C.

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

For plural electrodes of discharge device

313178, H01K 156

Patent

active

043617808

ABSTRACT:
In halogen incandescent lamps with bromine as the halogen and having a tantalum getter to absorb any free oxygen, the getter also absorbs bromine at high operating temperatures and affects the tungsten-bromine cycle adversely.
Tantalum alloyed with tungsten in a weight ratio range of 9/1 to 1/9 has a very much larger affinity to oxygen than it has to bromine. As a result of this the alloys are excellently suitable for use as an oxygen getter in tungsten/bromine cycle lamps.

REFERENCES:
patent: 2444423 (1948-07-01), Braunsdorff
patent: 3748519 (1973-07-01), Martin et al.
patent: 3829729 (1974-08-01), Westlund, Jr. et al.
patent: 3829731 (1974-08-01), T'Jampens et al.
patent: 3849687 (1974-11-01), Huston et al.
patent: 4096405 (1978-06-01), Goto
patent: 4128783 (1978-12-01), Giller et al.

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