摘要 |
The invention provides a metal halide lamp with a ceramic discharge vessel and two electrodes. The discharge vessel encloses a discharge volume containing an ionisable salt filling. The ionisable salt filling comprises 3.5-82 mol % sodium iodide, 0.5-8.5 mol % thallium iodide, 14-92 mol % calcium iodide, 0.5-5.5 mol % cerium iodide and 0.5-3.5 mol % indium iodide. The mol percentages are relative to the total amount of ionisable salt filling. The lamp is dimmable, at least in a range of 50-100% of nominal intensity, while maintaining its light-technical properties and while not substantially deviating from the black body locus. Further, the lamp has a relatively high efficacy. Further, the lamp can be operated horizontally and vertically, i.e. the lamp is suitable for universal burning. |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V.;STAPPERS, OSCAR, G.;VAN ERK, WILLEM;BROECKX, WOUTER, E., K. |
发明人 |
STAPPERS, OSCAR, G.;VAN ERK, WILLEM;BROECKX, WOUTER, E., K. |