MERCURY-FREE DISCHARGE LAMP

摘要

A mercury-free discharge lamp includes a hollow cylindrical body, two capillaries entirely inside the body and hermetically sealed to the body, each with a respective electrode therein, where the capillaries are separated from each other inside the body by a gap that is a discharge chamber of the discharge lamp, and where each of the electrodes has an interior end exposed inside the discharge chamber and an exterior end extending beyond a respective end of the body. A pair of frit seals seal respective electrode exterior ends to respective ones of the capillaries. The discharge chamber preferably includes a mercury-free metal halide salt fill that is 10 to 54.5 wt% NaI, 6.6 to 15 wt% DyI3, 6.7 to 15 wt% HoI3, 6.3 to 15 wt% TmI3, 7.2 to 12 wt % TlI, and 14.5 to 40.7 wt % CaI2.