PULSED METAL HALIDE SALT SOURCE

摘要

The present invention is directed to a new type of colored light source especially well suited for use as a signal and/or navigational aid. The source is also adaptable to many other applications requiring momentary flashes of a particular color of light. The mercury-free, pulsed metal halide light source of the present invention comprises in combination: (a) a light transmissive glass vacuum outer jacket; (b) a light transmissive glass arc tube disposed within said outer jacket; (c) emissive material comprising at least one metal halide salt and an inert gas; and (d) an anode and a cathode, disposed within said arc tube, forming a gap therebetween; said cathode being completely covered by said metal halide salt.