Metal halide discharge lamp, lighting device for metal...

Details Metal halide discharge lamp, lighting device for metal... Metal halide discharge lamp, lighting device for metal...

2005-03-29

2005-03-29

Santiago, Mariceli (Department: 2879)

Electric lamp and discharge devices

With gas or vapor

With particular gas or vapor

C313S637000, C313S638000, C313S641000, C313S572000

Reexamination Certificate

active

06873109

ABSTRACT:
Disclosed is a metal halide discharge lamp which essentially permits disusing mercury. The metal halide discharge lamp comprises a refractory and transparent hermetic vessel, a pair of electrodes fixed to the hermetic vessel, and a discharge medium sealed in the hermetic vessel and containing a first halide, a second halide and a rare gas, the first halide being a halide of a metal which achieves a desired light emission, the second halide having a relatively high vapor pressure, being at least one halide of a metal which is unlikely to emit a visible light compared with the metal of the first halide, and acting as a buffer gas.

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