Characteristics of a multi-pairs of electrodes flat lamp

Abstract

Mercury which is used in fluoresent lamps for general lighting has a possibility to cause environmental problems. We have been developing lamps which contain only rare gases in place of mercury. The rare gas lamps are environmentally-friendly, but it has lower luminance than the mercury lamp has. Therefore, we have tried expanding positive column by setting an external electrode.
By setting an external electrode on the outside wall of the flat lamp which has multi-pairs of electrodes, positive column expands and uniformity of luminance improves.