Human centric lighting put to the test

December 05, 2019 //By Julien Happich
Human centric lighting
GL Optic was the first company in the world to introduce a device enabling measurement of lighting taking into account the requirements of human centric lighting.

Last year, the International Commission on Illumination issued a new standard CIE SO26:2018, which defines the ways of measuring lighting in terms of human centric lighting, i.e. the assessment of the impact of lighting on the human circadian cycle. The document describes an indicator called Melanopic Equivalent Daylight Illuminance (M-EDI). Based on this value, it is possible to determine to what extent a given spectral distribution of light can effectively inhibit melatonin secretion during the day and thus influence our rhythm of work and rest. This is the first international document that sets out the calculation method of human centric lighting. The company‘s GL Spectis 1.0 Touch + Flicker, equipped with special software, enables the calculation of radiometric and photometric values such as Esc, Emc, Erh, Eml, Melanopic Ratio, M-EDI and others, as a result of the effectiveness of lighting on humans. With GL Spectis 1.0 Touch + Flicker it is possible not only to examine the lighting conditions in terms of visibility (light intensity, colour temperature and light ripple), but also to examine the parameters associated with non-visual impact - the impact on the human circadian cycle.

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