What are thermal light sources and cold light sources?
A cold light source is a light source that shines through chemical and biological energy.A thermal light source is a light source that is luminous through heat energy.
1.: the use of thermal light source heat excitation (incandescent lamp, lamp etc.).2., cold light source: the use of chemical energy, electricity to stimulate the light source (fireflies, neon lights, etc.).The 3. cold light source is a new high-tech light source after the incandescent lamp, LED and LCD light source products. Because of the principle of light emitting, it produces electron collision under the electric field, and the luminescence of the fluorescent material is excited. It has excellent optical and flicker characteristics. When the cold light source is working, no heat is generated, and a series of problems related to heat accumulation are avoided.
The fluorescent lamp is cold light, incandescent lamp is the heat source, 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 lighting light the. 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.
