Electric lamp and discharge devices – With temperature modifier – Double wall – jacket or casing for envelope
Patent
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.
DeMeo Palmer C.
General Electric Company
Kempton Lawrence R.
Legree Ernest W.
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