How does a halogen lamp work?
A Halogen lamp is an incandescent lamp. It is also called Tungsten Halogen or quartz-halogen or quartz iodine lamp. It consists of a tungsten filament that is sealed in a transparent envelope. This envelope is filled with an inert gas mixture.
The inert gas mixture consists of a small amount of halogen i.e iodine or bromine. This halogen gas and tungsten filament produce a halogen cycle chemical reaction.
This chemical reaction redeposits the evaporated tungsten on the filament. This increases the life and maintains the clarity of the envelope. This process allows the filament operates at a higher temperature that a standard incandescent lamp.