Do all LED lights belong to cold light sources?
A cold light source is a luminous light source with almost no infrared spectrum. For example, the more popular LED light source is a typical cold light source. The traditional incandescent and halogen light sources are typical thermal light sources.
The excitation of Phosphors by electron collisions produces luminescence, with excellent optical properties and relatively high luminous efficiency. Products like bright lights are fine.
Yes. Generally speaking, the principle of a cold light source is under the action of an electric field
The characteristics of cold light source to other almost all the energy into visible light, and a few other wavelengths of light, thermal light is different, in addition there are a lot of visible light infrared light, a part of energy into the contributions of the infrared illumination. When the thermal light source is added to the infrared filter, the light should be about the same as that of the cold light source because the infrared light has been filtered out.
