What is optical radiation?

Optical radiation is part of the electromagnetic spectrum. It is subdivided into

• ultraviolet radiation (UV),
• the spectrum of light visible for man (VIS) and
• infrared radiation (IR).

Optical radiation may produce positive as well as negative effects. It is therefore necessary to arrange for reasonable exposure to optical radiation. Primarily UV-radiation, but also IR-radiation, may be both beneficial and detrimental for man. The natural source of both types of radiation is sun. Artificial sources of UV-radiation are among others UV-lamps or emitters as for example in solaria. Artificial IR-radiation is generated by devices such as light bulbs or radiant heaters.

Excessive exposure to natural or artificial UV-radiation means immediate (acute) and long-term (chronic) damage to the eye and skin. Excess of IR-radiation may also cause health detriment. Recent studies have shown that chronic exposure to IR-radiation alone or combined with UV-radiation may induce skin damage. It is therefore necessary to arrange for reasonable exposure to optical radiation.