Degradation of biological potency in led light sources with lifetime

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademic

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This paper investigates the degradation of biological potency in LED light sources over their lifetime. Biological potency refers to the ability of light to generate biological effects, for instance on sleep, mood, and circadian rhythms. Current lifetime metrics for LEDs typically do not consider the biological potency, despite its relevance for human health and well-being. Therefore, we investigate such metrics and explore blue light hazard changes over the lifetime of LEDs.
Using a dataset of accelerated aging of LEDs, we show that the melanopic equivalent daylight luminance maintenance decreases faster than lumen maintenance, this effect is smaller in LEDs of 4000K versus 2700K. Over lifetime, the melanopic daylight efficacy ratio also decreases, while the blue light hazard does not significantly increase.
Our findings highlight the need to consider changes in biological potency over time in the design and implementation of LED lighting solutions.
Originele taal-2Engels
TitelProceedings of the 30th session of the CIE, CIE 2023
Aantal pagina's8
ISBN van geprinte versie978-3-902842-77-0
StatusGepubliceerd - 18 sep. 2023
EvenementThe 30th Quadrennial Session of the CIE (CIE 2023) - Ljubljana, Slovenië
Duur: 18 sep. 202320 sep. 2023


CongresThe 30th Quadrennial Session of the CIE (CIE 2023)
Verkorte titelCIE 2023
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