Metal halide lamp containing sci.sub.3 with added cadmium or...

Details Metal halide lamp containing sci.sub.3 with added cadmium or... Metal halide lamp containing sci.sub.3 with added cadmium or...

H - Electricity

01

J

313/137

H01J 61/12 (2006.01) H01J 61/18 (2006.01)

Patent

CA 1170307

LD 8590 METAL HALIDE LAMP CONTAINING ScI3 WITH ADDED CADMIUM OR ZINC ABSTRACT OF THE DISCLOSURE A high intensity metal halide discharge lamp has a fill comprising mercury, sodium iodide and scandium triiodide puls an inert starting gas. Cadmium or zinc may be added in a molar ratio relative to ScI3 within the range of 0.04 to 1.0 to achieve a lowering in color temperature of several hundred degrees Kelvin at the cost of a minor decrease in lumens which is offset by an improvement in maintenance.

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