| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a discharge lamp capable of being operated at less than the full rated power without suffering undesirable color shift, loss of lumen maintenance or loss of lamp efficacy. <P>SOLUTION: A ceramic metal halide lamp fill is free of halides of thallium but includes: (a) an inert gas, (b) mercury, and (c) a further halide component including: (i) an alkali metal halide, (ii) an alkaline earth metal halide, and (iii) at least one of a rare earth halide selected from the group consisting of lanthanum and cerium, and optionally praseodymium, neodymium, and samarium, and a combination thereof. <P>COPYRIGHT: (C)2012,JPO&INPIT |
