Infrared Radiation

What do infrared rays do?

Infrared radiation – IR radiation, also called ultra-red radiation – or thermal radiation refers to electromagnetic waves in the spectral range between visible light and the longer wavelength microwave radiation. This corresponds to a wavelength range of about 780 nm to 1 mm.

Short-wave IR radiation (from 780 nm) is often referred to as near infrared (NIR), while wavelengths of around 5-25 micrometers are referred to as mid infrared (MIR). Extremely long wavelength IR radiation (25 µm-1 mm) is called far infrared (FIR). Near infrared penetrates deep into and under the skin, while mid infrared in particular is already absorbed at the surface of the skin and the cornea of the eye (risk of cataract). Near infrared of high intensity (laser radiation) is therefore particularly dangerous for the eyes and skin, as it reaches the retina in the eye unnoticed and causes destruction. On the body, near infrared is absorbed in regions where there are no temperature sensors and can therefore also often cause damage there unnoticed: Infrared rays penetrate the skin to a high degree and, in extreme cases, can cause sunstroke.

However, infrared radiation is also vital because it provides warmth, stimulates microcirculation, activates the activity of sweat glands and affects blood vessels. Attention. Too much infrared radiation while sunbathing can also cause vascular damage – especially in the facial area.