Light Quality Blog

LEDs OLEDs and other light sources quality measures and technology

Tag: CIE

New TM-30-18 and CIE 224:2017 Colour Rendition Metrics

Design, Standards, Technology
The design and application of lighting systems should take into account not only illuminance levels but also spectral power distribution and proper colour rendering, which are connected to human wellbeing. The highest number of available studies and measures which help  evaluate LED illumination products better are related to vision. The most obvious ones are the [...]

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

Instruments, Photobiology, Publications, Standards
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 [...]

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