Electric discharge lamp

Details Electric discharge lamp Electric discharge lamp

2006-01-31

2006-01-31

Patel, Ashok (Department: 2879)

Electric lamp and discharge devices

Electrode and shield structures

With lead wire or connector

C313S332000, C313S633000

Reexamination Certificate

active

06992430

ABSTRACT:
An electric discharge lamp comprising: a light-transmissive ceramic lamp vessel (1); a first and a second current conductor (2,3) entering the lamp vessel (1), and each supporting an electrode (4,5) in the lamp vessel (1); an ionizable filling comprising a rare gas and a metal halide in the lamp vessel (1); at least the first current conductor (2) within the lamp vessel (1) being halide-resistant, characterized in that the first current conductor (2) at least substantially comprises a material with an at least substantially isotropic coefficient of thermal expansion, said material preferably being chosen from the group of pentamolybdenum boride disilicide, pentamolybdenum diboride silicide, or a combination of these two materials.

REFERENCES:
patent: 6060829 (2000-05-01), Kubon et al.
patent: 6169365 (2001-01-01), Kubon et al.
patent: 6215254 (2001-04-01), Honda et al.
patent: 6590342 (2003-07-01), Onnekes-Van Der Voort et al.
patent: 6781292 (2004-08-01), Ishida et al.
patent: 6791266 (2004-09-01), Venkataramani et al.
patent: WO0034980 (2000-06-01), None

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