A halogen lamp or tungsten halogen lamp is a type incandescent lamp. The halogen lamp consists of a tungsten filament enclosed in an environment of an inert gas like argon and a small amount of a halogen like bromine or iodine. The combination of the tungsten filament and the halogen results in a chemical reaction (called regenerative cycle or halogen cycle).
- Widely used in automobiles as headlamps.
- Infrared light source.
- Stage lighting.
- Projection lamps in motion pictures and slide projectors.
- under-cabinet lighting
- Work lights
- Halogen reflectors like MR and PAR lamps are often preferred for directed lighting such as spotlights and floodlights.