METAL HALIDE LAMP FOR AUTOMOBILE HEADLIGHT

文件类型：PDF文档
文件大小：36K
PROBLEM TO BE SOLVED : To decrease changes of luminescent colors generated at initial usage, and improve a luminescent color maintenance rate, in a metal halide lamp for an automobile headlight containing halides mainly of sodium, thallium and indium. SOLUTION : In the metal halide lamp for the automobile headlight having mercury, buffer gas and metal halides sealed in an arc tube made of quartz glass equipped with a pair of electrodes, the metal halides include halides of sodium, thallium, and indium, the indium halide by 10% or more and 55% or less to a total volume of halides, a kind or more of halides of rare-earth metal consisting of lanthanum, neodymium, gadolinium, dysprosium, holmium, thulium and lutetium, and further, halides of cesium by 5% or more to a total volume of metal halides in a weight ratio. COPYRIGHT : (C)2010, JPO&INPIT