Illuminating system having sequential color filtering and a...

Details Illuminating system having sequential color filtering and a... Illuminating system having sequential color filtering and a...

H - Electricity

04

N

H04N 5/74 (2006.01) H01J 61/40 (2006.01) H05B 41/44 (2006.01)

Patent

CA 2495025

The invention relates to a novel method for operating lighting systems provided with a sequential colour filtering and a high-pressure discharge lamp using alternate current. The invention also relates to corresponding ballast for said lighting systems. According to said invention, at least three communications for current supply to said lamp are used during the colour filtration sequence in order to favourably operate said lamp without the excessive increase of the colour filtering operation frequency.

L'invention concerne un nouveau procédé pour faire fonctionner des systèmes d'éclairage comportant un système de filtrage chromatique séquentiel temporel et une lampe à décharge haute pression fonctionnant en courant alternatif. L'invention concerne également un ballast correspondant, destiné auxdits systèmes d'éclairage. Selon l'invention, au moins trois commutations du courant de la lampe sont utilisées au cours d'une séquence de filtration chromatique pour faire fonctionner la lampe de manière avantageuse, sans élévation excessive de la fréquence de fonctionnement du système de filtrage chromatique.

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