A variable color filter for fluorescent lamps has a color tube supporting colored filter strips disposed longitudinally along the color tube so that the strips are circumferentially adjacent to each other. A motor rotates the color tube inside a mask so that an aperture in the mask limits emission to...http://www.google.fr/patents/US6796685?utm_source=gb-gplus-shareBrevet US6796685 - Variable color lighting with linear fluorescent lamps
Variable color lighting with linear fluorescent lamps
