Low-pressure metal vapour discharge lamp

Details Low-pressure metal vapour discharge lamp Low-pressure metal vapour discharge lamp

H - Electricity

01

J

313/108

H01J 61/26 (2006.01)

Patent

CA 1155903

PHN 9584 9 ABSTRACT: The invention relates to a low-pressure metal vapour discharge lamp comprising a discharge tube and an outer bulb enveloping the discharge tube. Provided between the discharge tube and the outer bulb are a bar- ium-containing getter and an electrical resistor which, in operation assumes a temperature of at least 500°C, for cracking CH4 gas. According to the invention, the resis- tor is enveloped for the greater part by a ceramic tube, which prevents the electrons emitted by the hot resistor from being deposited on the exterior of the discharge tube wall.

361435

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