Mercury lamp, lamp unit, method for producing mercury lamp...

Details Mercury lamp, lamp unit, method for producing mercury lamp... Mercury lamp, lamp unit, method for producing mercury lamp...

H - Electricity

01

J

H01J 9/44 (2006.01) H01J 61/12 (2006.01) H01J 61/20 (2006.01) H01J 61/30 (2006.01) H01J 61/86 (2006.01) H01K 1/50 (2006.01)

Patent

CA 2387851

A high-pressure discharge lamp (100) comprising an arc tube (10) in which at least a rare gas and a halogen are sealed and which is substantially made of vitreous silica and electrodes (12) disposed in the arc tube (10) and substantially made of tungsten, wherein the mole of the halogen is greater than the sum of the total mole of the metal elements (excluding tungsten and mercury) bondable to the halogen and present in the arc tube (10) and the mole of tungsten evaporated from the electrodes (12) during the operation of the lamp and present in the arc tube (10).

L'invention concerne une lampe (100) à décharge haute pression comportant un tube (10) à arc, dans lequel au moins un gaz rare et un halogène sont scellés. Le tube est fait sensiblement de verre de silice, et des électrodes (12) placées dans le tube (10) à arc sont faites sensiblement de tungstène. La mole d'halogène est supérieure à la somme de la mole totale des éléments métalliques (à l'exclusion du tungstène et du mercure) susceptibles de se lier à l'halogène et présents dans le tube (10) à arc, et de la mole de tungstène qui s'est évaporée des électrodes (12) au cours du fonctionnement de la lampe et est présente dans le tube (10) à arc.

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