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AssigneeKoninklijke Philips Electronics N.V.
InventorsChristoffel Wijenberg, Antonius Ludovicus Johannes Cornelis Heijnen
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The invention relates to a high-pressure discharge lamp which is provided with a discharge vessel which encloses a discharge space. The discharge vessel has a ceramic wall and is closed by a ceramic plug. An electrode which is located inside the discharge space is connected to an electric conductor by way of a leadthrough element. The leadthrough element projects through the ceramic plug with a close fit and is connected thereto in a gastight manner by way of a sealing ceramic. The leadthrough element has a first part which is formed by a cermet at the area of the gastight connection. In accordance with the invention the leadthrough element has a second part which is a metal part which extends from the cermet in the direction of the electrode.
A high-pressure discharge lamp which is provided with a discharge vessel that encloses a discharge space, has a ceramic wall and is closed by a ceramic plug, said discharge space accommodating an electrode which is connected to an electric current conductor by means of a leadthrough element which projects into the ceramic plug with a tight fit, is connected thereto in a gastight manner by means of a sealing ceramic and has a first part which forms a cermet at the area of the gastight connection, characterized in that the leadthrough element also includes a second part which is a metal part and extends from the cermet in the direction of the electrode.
Dependencies are inferred from the claim text.