Halogen lamp
INCANDESCENT LAMP VARIETY
Halogen Lamp; Halogen light; Tungsten-halogen lamp; Tungsten-halogen light; Tungsten-halogen light bulb; Tungsten-halogen bulb; Halogen bulb; Halogen lamps; Quartz halogen; Quartz halogen lamp; Halogen light bulb; Halogen bulbs; Halogen cycle; Tungsten halogen lamp; Halogen down lighter; Halogen lighting; Tungsten halogen; Tungsten Halogen; Quartz-halogen lamp; R7S
A halogen lamp (also called tungsten halogen, quartz-halogen, and quartz iodine lamp) is an incandescent lamp consisting of a tungsten filament sealed in a compact transparent envelope that is filled with a mixture of an inert gas and a small amount of a halogen, such as iodine or bromine. The combination of the halogen gas and the tungsten filament produces a halogen-cycle chemical reaction, which redeposits evaporated tungsten on the filament, increasing its life and maintaining the clarity of the envelope.