Mercury-free high-pressure discharge lamp and luminaire...

Details Mercury-free high-pressure discharge lamp and luminaire... Mercury-free high-pressure discharge lamp and luminaire...

2006-11-07

2009-08-11

Ton, Toan (Department: 2889)

Electric lamp and discharge devices

With gas or vapor

With particular gas or vapor

C313S484000, C313S567000, C313S638000, C313S643000

Reexamination Certificate

active

07573203

ABSTRACT:
A mercury-free high-pressure discharge lamp includes a light-transmissive airtight envelope enclosing therein a discharge space, and a pair of electrodes sealed inside the light-transmissive airtight envelope and facing the discharge space, and the primary halide includes at least thulium bromide having an innumerable emission spectrum primarily around the peak of a luminosity curve and alkali metal halide, and the accessory halide contains one or more metal halides mostly selected from a group of Magnesium (Mg), Iron (Fe), Cobalt (Co), Chromium (Cr), Zinc (Zn), Nickel (Ni), Manganese (Mn), Aluminum (Al), Antimony (Sb), Bismuth (Bi), Beryllium (Be), Rhenium (Re), Gallium (Ga), Titanium (Ti), Zirconium (Zr), and Hafnium (Hf) which primarily contribute to fix lamp voltage.

REFERENCES:
patent: 6353289 (2002-03-01), Ishigami et al.
patent: 2006/0255741 (2006-11-01), Ishigami et al.
patent: 2007/0085482 (2007-04-01), Lambrechts et al.
patent: 55032338 (1980-03-01), None

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