Electric lamp and discharge devices – With gas or vapor – Having a particular total or partial pressure
Patent
1993-11-10
1998-08-25
Oberly, Alvin E.
Electric lamp and discharge devices
With gas or vapor
Having a particular total or partial pressure
31323161, H01J 6118
Patent
active
057986118
ABSTRACT:
The spectral energy characteristic of a discharge lamp is controlled by changing the density of the fill substance. The spectral characteristic can be shifted while substantially maintaining its shape by changing the density of the fill. A sulfur or selenium containing discharge lamp which is operated at a pressure of at least about 1 atmosphere contains a low ionization potential substance in the fill. Characteristics which are improved are one or more of spatial color uniformity, extinguishing characteristics, and bulb starting reliability. Particular substances which are added to the fill are alkalai metal containing substances, III B metal containing substances, and alkaline earth metal containing substances. When light is reflected back into the bulb, the light which is re-emitted is stronger in the higher wavelengths.
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Dolan James T.
Turner Brian
Ury Michael G.
Wood Charles H.
Fusion Lighting Inc.
Oberly Alvin E.
Richardson Lawrence O.
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