Halogen Lamps

A halogen lamp has an iodine-cycle tungsten incandescent lamp as the visible/near infra­red (360 nm to >1 pm) light source for spectrophotometry and phototherapy, and recently

Halogen Lamps

it has also been used in IR phototherapy. As it is gas-filled, the tungsten electrode can be heated up to 4000 K. At this temperature, the maximum spectra of emission is about 1max =750 nm (see Fig. 3.1). About 30% of the total power is emitted at wavelengths shorter than 1max and the remaining 70% is emitted at wavelengths longer than 1max.

Updated: September 12, 2015 — 4:04 pm