Patent ID: 6404130
Filing Date: 2002-06-11
Classification: H01J

Abstract:
A metal halide lamp with a ceramic discharge vessel and containing a fill,said discharge vessel having two ends which are closed off by sealing means, and electrically conductive lead-throughs being guided through these means in a vacuum-tight manner, to which lead-through an electrode is attached, which electrode projects into the interior of the discharge vessel, at least a front part of the lead-through, which front part faces toward the discharge, being designed as a halide-resistant component made from electrically conductive cermet which is composed of a first electrically conductive phase and a second ceramic phase, which composes a ceramic base material, and said fill comprising at least one rare-earth metal, wherein at least at a surface of said electrically conductive cermet which is accessible to said fill, at least some of the ceramic phase comprises the combination of the ceramic base material with one or more rare-earth metal oxides.