Fill gas for miniature high pressure metal vapor arc lamp

Details Fill gas for miniature high pressure metal vapor arc lamp Fill gas for miniature high pressure metal vapor arc lamp

1978-08-10

1980-04-22

Demeo, Palmer C.

Electric lamp and discharge devices

With temperature modifier

Double wall, jacket or casing for envelope

313225, 313226, 313229, 313185, H01J 6116, H01J 6120, H01J 6152

Patent

active

041997018

ABSTRACT:
Miniature metal vapor arc lamps containing mercury and one or more metal halides are subject to severe blackening of the arc tube and poor lumen maintenance unless a high pressure of starting gas is used. A Penning mixture of neon admixed with 0.01 to 10% argon, krypton or xenon at a fill pressure from about 100 to 200 torr provides lower starting voltage together with better lumen maintenance than can be achieved with the conventional argon starting gas.

REFERENCES:
patent: 3351798 (1967-11-01), Bauer
patent: 3753018 (1973-08-01), Beijer et al.
patent: 3814971 (1974-06-01), Bhattacharya
patent: 3900753 (1975-08-01), Richardson
patent: 3937996 (1976-02-01), Cap
patent: 3974410 (1976-08-01), Collins et al.
patent: 4020377 (1977-04-01), Popp et al.

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