HIGH PRESSURE METAL HALIDE LAMP

摘要

The invention relates to a high-pressure metal halide lamp, comprising an arc tube (1) comprising a metal halide containing discharge medium for supporting an electrical discharge, an outer envelope (15) surrounding said arc tube (1), and a phosphor coating (14) on the inner surface of said outer envelope (15), said phosphor coating comprising a blue emitting phosphor. Preferably, the blue emitting phoshor is selected from the group consisting of (Ba,Ca)1.29A112019,29:Eu, Sr5(P04)3CI:Eu, BaMgA110017:Eu, Si2A16011:Eu, BaA18013:Eu, Sr4A114025:Eu, and BaMgA110O17:Eu,Mn.