Method for providing a high-pressure discharge lamp, method...

H - Electricity – 01 – J

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H01J 61/86 (2006.01) H01J 61/073 (2006.01) G03B 21/14 (2006.01)

Patent

CA 2719973

In order to obtain a particularly high maximum light density of a high pressure discharge lamp (10) in a space, without the lamp being heated too much, the parameters of the lamp are specifically determined in accordance with the construction thereof to adapt to a desired power and a maximum current strengthI max defined for the desired power. In formula (I), R .kappa. represents the curvature radius (in mm) of the tip of the cathode, e0 represents the distance between electrodes in mm, and P represents the room temperature filling pressure of the xenon gas (in bar) in the high-pressure discharge lamp (10). Higher maximum light densities are obtained, and c is higher.

L'objectif de l'invention est d'obtenir une lampe à décharge haute pression (10) présentant une luminance maximale dans l'espace particulièrement élevée, sans échauffement trop important de la lampe. À cet effet, les paramètres de la lampe sont fixés de manière spécifique lors de sa fabrication de manière à correspondre à une puissance nominale et à une intensité maximale I max définie par rapport à la puissance nominale. Dans la formule (I), R? représente le rayon de courbure (en mm) de la pointe de la cathode, e0 représente la distance entre les électrodes (en mm) et P la pression de remplissage à température ambiante du gaz xénon (en bar) dans la lampe à décharge haute pression (10). Plus on obtient des luminances maximales élevées, plus c est élevé.

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