MERCURY-FREE METAL HALIDE LAMP Russian patent published in 1995 - IPC

FIELD: electrical engineering. SUBSTANCE: metal halide lamp has optically transparent envelope with hermetically sealed electrodes filled with inert gas and additions to provide envelope with radiating metal halides. Novelty is that additions are used to provide envelope with helium halides in amount of 0,95-3 мкмоль/см³,, inert gas pressure is from 13.3 to 200.0 kPa and additions to provide envelope with ferrum halides in amount of 0,1-5 мкмоль/см³. are additionally introduced. EFFECT: increased radiant flux in range of 350-450 nm. 2 cl, 1 tbl, 1 dwg