RAPID RE-STRIKE CERAMIC DISCHARGE METAL HALIDE LAMP

摘要

The hot re- strike time of a high wattage (150W or greater) ceramic discharge metal halide (CDM) lamp is reduced by: (a) increasing the ratio A of the diameter (D2) of the outer bulb (1) to the inner diameter (ID) of the discharge vessel (3); or (b) filling the outer bulb with an inactive gas such as nitrogen, helium, neon, argon, krypton or xenon; or by implementing both (a) and (b). The hot re- strike time can be further reduced by combining (a) and/or (b) with (c), the addition of a getter metal for iodine, such as Sc, Ce or Na, to the discharge vessel (3).