Conventional LED bulbs, lighting, screens and projectors do not pose a health risk if used properly. This also applies to sensitive population groups such as children or people with very clear eye lenses.
LEDs (light-emitting diodes) lend themselves to energy-efficient indoor and outdoor lighting, as well as for screens, displays and projectors. For technical reasons, LED lights cannot produce white light, but instead emit yellow and blue light which when blended produces white light. Since blue light poses a risk to the retina of the eye above a certain intensity and irradiation time, LED lights must comply with the blue light hazard limit. This limit is reached after varying irradiation times, depending on the intensity of the blue light. Blue light can also influence human physiology.
Last modification 29.03.2022
Federal Office of Public Health FOPH
Division of Radiological Protection
Non-ionising Radiation and Dosimetry Section
Tel. +41 58 462 96 14