Definitions for "Metal halide lamp"
Keywords:  halide, indium, hid, mercury, thallium
Discharge lamp in which the major portion of the light is produced by the radiation from a mixture of a metallic vapor (for example, mercury) and the products of the dissociation of halides (for example, halides of thallium, indium or sodium) - for example: HPI-T lamps.
Light source for some projectors. They provide light of defined spectral lines by heating metal.
A lamp often used in higher-end projectors, with a half life of between 1000 and 2000 hours.