| 摘要 |
PROBLEM TO BE SOLVED: To provide a metal halide lamp emitting magenta light over a long period of time. SOLUTION: The metal halide lamp includes a ceramic arc tube. At least mercury, and halide containing lithium iodide and cesium iodide are added and sealed. A weight ratio of the cesium iodide with respect to the lithium iodide is 1/20 to 1/10. COPYRIGHT: (C)2011,JPO&INPIT
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