Tungsten Halogen Lamp Spectrum

The halogen lamp is also known as a quartz halogen and tungsten halogen lamp.

Tungsten halogen lamp spectrum.

A tungsten halogen lamp also known as halogen lamp is an incandescent light source. A halogen lamp also known as a tungsten halogen quartz halogen or quartz iodine lamp is an incandescent lamp consisting of a tungsten filament sealed into 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. The halogen gas reacts with the tungsten that has evaporated migrated outward and been deposited on the lamp wall. Thorlabs quartz tungsten halogen lamp is a versatile general purpose light source for alignment testing and illumination needs.

Tungsten halogen lamps the most advanced design in this class generate a continuous distribution of light across the visible spectrum although most of the energy emitted by these lamps is dissipated as heat in the infrared wavelengths see figure 1. As the quartz envelope wall reaches a temperature of. Lamps thorlabs broadband lamps include tungsten halogen light sources xenon arc lamps a deuterium uv light source globar sources for the mid ir and high power ir emitters. It consists of a tungsten filament enclosed in an environment of an inert gas and a small amount of a halogen bromine or iodine.

The filament is composed of ductile tungsten and located in a gas filled bulb just like a standard tungsten bulb however the gas in a halogen bulb is at a higher pressure 7 8 atm. Wavelength ranges or corresponding blackbody temperatures are given below. The basis for light sources used as the standard for color perception is a tungsten incandescent lamp operating at a defined temperature. Overview quartz tungsten halogen qth lamps are a popular alternative to arc lamps when compared to arc lamps qth lamps have better output stability do not produce strong uv light emission do not have intense spectral emission lines in their output and do not produce toxic ozone.

The spectrum of light produced by an incandescent lamp closely approximates that of a black body radiator at the same temperature.