CERMET FOR LAMP AND CERAMIC DISCHARGE LAMP

摘要

Cermet for a lamp which contains a material with a coefficient of liner expansion which is greater than or equal to that of a translucent ceramic comprising the discharge vessel (10) of a ceramic discharge lamp, and which furthermore contains a material with a coefficient of linear expansion which is smaller than that of the translucent ceramic. A ceramic discharge lamp is furthermore described which has a ceramic discharge vessel with an arc tube part (11) and side tube parts (12), in which furthermore in the arc tube part (11) there are a pair of electrodes (21), and in which a hermetically sealed arrangement is formed by fritting-welding of the hermetically sealed components (24) on the side tube parts (12), into which hermetically sealed components the base parts of the upholding parts (22) of the electrodes are inserted, the tips of which are provided with electrodes (21), characterized in that the hermetically sealed components (24) consist of the above described cermet for a lamp.