Blue light hazard – new recommendations on the assessment of LED lamps and luminaires

Introduction The EN 62471 standard is one of the most important documents discussing photobiological hazards. The standard defines principles which should be followed to assess photobiological hazards and safety of artificial and natural sources of optical radiation. It covers all kinds of sources emitting optical radiation in a very wide range of wavelength – in [...]

Understand the causes, consequences, and measurement of light flicker

As modern energy-efficient lighting technologies, including LED-based solid-state lighting (SSL), proliferate in our environment, awareness of their impact on biology and even technology evolves as well. LED lighting’s rapid development and assimilation, often without clear standards, may result in lighting flicker with adverse effects. Many organizations, including international standards bodies and regulatory agencies, and industry [...]

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