Patent ID: 6657388
Filing Date: 2003-12-02
Classification: H01J

Abstract:
A high-pressure discharge lamp including a discharge vessel that encloses a discharge space, said discharge vessel comprising:a ceramic wall; a ceramic plug closing said discharge space; an electrode connected to an electric current conductor by a leadthrough element projecting into the ceramic plug with a tight fit thereto; and a sealing ceramic for sealing the ceramic plug in a gastight manner, wherein the leadthrough element is comprised of: a first part which forms a cermet at the area of the gastight connection, and a second part which is a metal part and extends from the cermet in the direction of the electrode, the second part being of sufficient length so as to space the first part from the electrode thereby substantially reducing a heat exposure of the first part from the electrode, and wherein the first part and the second part are of substantially the same length.