Electric lamp and discharge devices – With gas or vapor – Having a particular total or partial pressure
Patent
1986-04-04
1987-06-09
DeMeo, Palmer C.
Electric lamp and discharge devices
With gas or vapor
Having a particular total or partial pressure
313642, H01J 6120
Patent
active
046722670
ABSTRACT:
A fill composition for a high intensity discharge device including mercury, niobium oxytrihalide, and a molecular stabilization agent is provided. The molar ratio of niobium oxytrihalide to the molecular stabilization agent in the fill is in the range of from about 5:1 to about 7.5:1. Niobium oxytrihalide is present in the fill in sufficient amount to produce, by dissociation in the discharge, atomic niobium, niobium oxide, NbO, and niobium dioxide, NbO.sub.2, with the molar ratio of niobium-containing vapor species to mercury in the fill being in the range of from about 0.01:1 to about 0.50:1; and mercury pressure of about 1 to about 50 atmospheres at lamp operating temperature. There is also provided a high intensity discharge device comprising a sealed light-transmissive arc tube; the arc tube including the above-described fill; and an energizing means for producing an electric discharge within the arc tube.
REFERENCES:
patent: 3720855 (1973-03-01), Gardner et al.
patent: 3748520 (1973-07-01), Silver
Metal Oxide Containing High Intensity Discharge Lamp" by Lapatovich et al; 4th International Symposium on Science and Technology of Light Sources 4/7-10/1986.
Keeffe William M.
Lapatovich Walter P.
Liebermann Richard W.
Maya Jakob
DeMeo Palmer C.
Finnegan Martha Ann
GTE Laboratories Incorporated
GTE Products Corporation
O'Shea Sandra L.
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