| 简介 |
A metal halide lamp ( 10 ) includes a discharge vessel ( 12 ) which may be formed of a ceramic material. The vessel defines an interior space ( 16 ). An ionizable fill ( 17 ) is disposed in the interior space. The ionizable fill includes an inert gas, mercury, and a halide component. The halide component includes an alkali metal halide, an alkaline earth metal halide component, and optionally at least one of a rare earth halide and a Group IIIA halide. The alkaline earth metal halide component includes at least one of a barium halide and a strontium halide. At least one electrode ( 18, 20 ) is positioned within the discharge vessel so as to energize the fill when an electric current is applied thereto. The lamp having a wall loading, when energized, which is sufficient to maintain an active tungsten halogen cycle. |
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