A classification of incandescent lamps in which the quartz glass envelope (or bulb) is filled with a halogen gas. Advantages over standard incandescent lamps include longer lamp life and the ability to create much more compact filament designs. Tungsten-halogen lamps typically burn at much higher temperatures than their plain incandescent counterparts. See Also: Incandescent Lamp

A type of incandescent lamp that contains a halogen gas in the bulb, which reduces the filament evaporation rate increasing the lamp life. The high operating temperature and need for special fixtures limits their use to commercial applications and for use in projector lamps and spotlights.