Optical radiation

Under the concept of optical radiation, both ultraviolet radiation, the visible light and infrared radiation falls. The UV radiation has the lowest wavelengths from 100nm to 400NM and is the most energy-efficient part of the optical radiation. The light visible for the human eye then is between 400nm and 780nm and the IR radiation includes the high wavelengths from 780nm to 1mm. It is also referred to as heat radiation.

Optical radiation then not only delivers the sun in a natural way, but also artificial light radiates. It applies to both variants that excess can be harmful to our eyes and the skin. This is known, for example, from a sunburn after too long direct sunlight or also from the fact that you don't normally see directly in light sources, as this feels uncomfortable.

For the natural source of optical radiation, the sun, it then applies that the complete spectrum of radiation is emitted, whereas lamps can also be limited to certain areas and thus dangerous UV radiation can be filtered out.