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Optical Radiation

UV Radiation - Sun - Solaria - Infrared Radiation - Laser

Optische Strahlung
Elektromagnetisches Spektrum

What is infrared radiation?

Infrared radiation (IR radiation) - also referred to as thermal radiation - is part of the electromagnetic spectrum. It follows the visible radiation in the direction of longer wavelengths ranging from 780 nanometres to 1 millimetre.


Compared to microwaves the absorption of Infrared (IR) radiation is much stronger at the body surface. Organs situated deeper in the body are primarily heated by thermal conduction. Eye and skin are therefore the first organs affected by IR irradiation.

Infrared radiation in technology

Sun and fire are natural IR radiation sources. The radiation of fire mainly consists of infrared radiation causing the heat effects, visible light is insignificant. Practical application of infrared radiation mainly occurs in contactless transformation of heat, for example in the drying and processing of materials.

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