High intensity vapour discharge lamp

Details High intensity vapour discharge lamp High intensity vapour discharge lamp

H - Electricity

01

J

313/10

H01J 61/02 (2006.01) H01J 61/04 (2006.01) H01J 61/073 (2006.01)

Patent

CA 1194074

13 ABSTRACT: High intensity vapour discharge lamp. In the high intensity vapour discharge lamp (10) of the invention a sintering aid is employed admixed with the electron emissive material present on the electrodes (14) accommodated within the arc tube (12). The sintering aid is Nb2O5, Ta2O5 or a mixture thereof along with an alkaline earth oxide. The sinte- ring aid amounts to 2 - 15 weight percent of the ad- mixture. The alkaline earth oxide constituent amounts 5 - 55 weight percent of the sintering aid. The sintering aid substantially eliminates dusting of the electron emissive material.

435901

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