Electric lamp and discharge devices – With gas or vapor – Having a particular total or partial pressure
Patent
1992-06-03
1998-01-13
O'Shea, Sandra L.
Electric lamp and discharge devices
With gas or vapor
Having a particular total or partial pressure
313620, 313634, 313635, H01J 1716
Patent
active
057083282
ABSTRACT:
A metal halide arc discharge lamp rated for not more than 150 watts and 100 volts and which can be operated in either a horizontal or vertical position without a significant change in color temperature or lumen output has an ellipsoidal arc chamber mounted within a nitrogen-containing outer envelope. The arc chamber contains a pair of electrodes, mercury and sodium and scandium iodides and is coated at each end with a heat reflective coating. The chamber aspect ratio, electrode insertion length, metal halide density, coating length and wall loading are defined within narrow ranges.
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Gordon Brian L.
Hassink Martin N.
Korow David E.
Mathews Paul G.
General Electric Company
Hawranko George E.
O'Shea Sandra L.
Patel Vip
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