Metal halide lamp having ionizable iodide salt

Details Metal halide lamp having ionizable iodide salt Metal halide lamp having ionizable iodide salt

2007-03-13

2007-03-13

Williams, Joseph (Department: 2879)

Electric lamp and discharge devices

With gas or vapor

Envelope with particular structure

C313S637000, C313S638000, C313S639000, C313S642000

Reexamination Certificate

active

10521135

ABSTRACT:
A metal halide lamp comprising a substantially cylindrical discharge vessel having an internal diameter Di<2.0 mm and filled with an ionizable filling, wherein two electrodes are present at a mutual distance EA for maintaining a discharge in the discharge vessel, wherein the filling comprises an inert gas, such as Xe, having a pressure at room temperature between 5 and 25 bar, and an ionizable salt, characterized in that said ionizable salt is selected from the group comprising PrI3, NdI3 and LuI3.

REFERENCES:
patent: 4422011 (1983-12-01), Bruninx-Poesen et al.
patent: 5220244 (1993-06-01), Maseki et al.
patent: 5363015 (1994-11-01), Dakin et al.
patent: 0587238 (1993-09-01), None
patent: WO0067294 (2000-11-01), None

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