Radiation source introduction
The radiation source is an electric light source that can radiate a large amount of ultraviolet spectrum (1 to 380 nm) and infrared spectrum (780 to 1 x 106 nm) for illumination purposes, and includes an ultraviolet light source, an infrared light source, and a visible light source for non-illumination. The above two types of light sources are all incoherent light sources. In addition, there is a kind of coherent light source, which emits light under the action of excited radiation by excited state particles, and the output light wave wavelength is from short-wave ultraviolet to far-infrared. This kind of light source is called laser light source.