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

H - Electricity

01

J

313/138

H01J 61/12 (2006.01) H01J 61/16 (2006.01) H01J 61/18 (2006.01)

Patent

CA 1125352

LD 7650 FILL GAS FOR MINIATURE HIGH PRESSURE METAL VAPOR ARC LAMP ABSTRACT Miniature metal vapor larc lamps containing mer- cury and one or more metal halides are subject to se- vere blackening of the arc tube and poor lumen mainte- nance unless a high pressure of starting gas is used. A Penning mixture of neon admixed with 0.01 to 10% ar- gon, 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.

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