a lamp in which light is produced by a tungsten filament heated to incandescence by an electric current. The glass bulb enclosing the filament contains a low pressure of inert gas, usually argon. Sometimes small amounts of a halogen, such as iodine, are added to improve the intensity (tungsten-halogen lamp)
halogen lamp in American English
noun
a gas-filled, high-intensity incandescent lamp having a tungsten filament and containing a small amount of a halogen, suchas iodine, that vaporizes on heating and redeposits any evaporated tungsten particles back onto the filament: used esp. in motion-picture projectors and automobile headlights
Examples of 'halogen lamp' in a sentence
halogen lamp
Choose one that incorporates a tungsten halogen lamp, as opposed to a fluorescent lamp, as this will make colours look as they would in daylight.
Times, Sunday Times (2007)
The system uses a quartz-tungsten halogen lamp rather than a laser light source, broadening the excitation wavelength range.