High-pressure discharge lamp

H - Electricity – 01 – J

Patent

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Details

H01J 61/36 (2006.01) H01J 61/82 (2006.01)

Patent

CA 2588555

The invention relates to a high-pressure discharge lamp comprising a quartz glass discharge chamber (1) having at least one end (11) provided with a molybdenum film sealing element (2) and at least one electrode (4) which is connected to the sealing element (2) and is protruded in the lower chamber (10) of the discharge chamber (1), wherein said lamp comprises a spiral (5) whose slope is equal to or grater than 600 % and which encompasses the part of the electrode (4) in the end (11) area provided with the sealing element (2) of the discharge chamber (1) outside of said sealing element (2).

L'invention concerne une lampe à décharge haute pression, qui comporte une enceinte de décharge (1) en verre de quartz, présentant au moins une extrémité (11) pourvue d'un élément d'étanchéité (2) sous la forme d'un film de molybdène, et au moins une électrode (4) raccordée à l'élément d'étanchéité (2) et faisant saillie dans la chambre intérieure (10) de l'enceinte de décharge (1). Cette lampe présente un filament spiralé (5) dont le pas est supérieur ou égal à 600 % et qui entoure une partie de l'électrode (4) se trouvant dans la région de l'extrémité (11), pourvue de l'élément d'étanchéité (2), de l'enceinte de décharge (1), à l'extérieur de l'élément d'étanchéité (2).

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