High pressure discharge lamp and method of manufacturing an...

Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium

Reexamination Certificate

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C313S631000

Reexamination Certificate

active

07122953

ABSTRACT:
A high-pressure discharge lamp includes a discharge vessel having a wall of a ceramic material. The lamp also includes at least a feedthrough of an electrode having a cermet rod. The cermet rod is connected at a first end to a first end of a predominantly tungsten electrode pin by a welded joint. The electrode pin is in line with the cermet rod and has, at its first end, a solidified tungsten melt that is located near the interface between electrode pin and cermet rod.

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