Degradation of biological potency in led light sources with lifetime

S. Belgers; Luc J.M. Schlangen; Raymond H. Cuijpers; Ingrid E.J. Heynderickx

doi:10.25039/x50.2023.PP003

Degradation of biological potency in led light sources with lifetime

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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-2	Engels
Titel	Proceedings of the 30th session of the CIE, CIE 2023
Uitgeverij	CIE
Pagina's	689-696
Aantal pagina's	8
Volume	1
ISBN van geprinte versie	978-3-902842-77-0
DOI's	https://doi.org/10.25039/x50.2023.PP003
Status	Gepubliceerd - 18 sep 2023
Evenement	The 30th Quadrennial Session of the CIE (CIE 2023) - Ljubljana, Slovenië Duur: 18 sep 2023 → 20 sep 2023 https://slovenia2023.cie.co.at/

Congres

Congres	The 30th Quadrennial Session of the CIE (CIE 2023)
Verkorte titel	CIE 2023
Land/Regio	Slovenië
Stad	Ljubljana
Periode	18/09/23 → 20/09/23
Internet adres	https://slovenia2023.cie.co.at/

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Belgers_CIE2023_degradation_biological_potency_LED_sourcesDefinitieve gepubliceerde versie, 1,88 MBLicentie: Onbepaald

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@inproceedings{93df71cbd17d42168a8a924ae9adce3b,

title = "Degradation of biological potency in led light sources with lifetime",

abstract = "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.",

keywords = "LED aging, Melanopic equivalent daylight illuminance, Biological potency, Blue light hazard, Chromaticity, lumen maintenance",

author = "S. Belgers and Schlangen, \{Luc J.M.\} and Cuijpers, \{Raymond H.\} and Heynderickx, \{Ingrid E.J.\}",

year = "2023",

month = sep,

day = "18",

doi = "10.25039/x50.2023.PP003",

language = "English",

isbn = "978-3-902842-77-0",

volume = "1",

pages = "689--696",

booktitle = "Proceedings of the 30th session of the CIE, CIE 2023",

publisher = "CIE",

note = "The 30th Quadrennial Session of the CIE (CIE 2023), CIE 2023 ; Conference date: 18-09-2023 Through 20-09-2023",

url = "https://slovenia2023.cie.co.at/",

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TY - GEN

T1 - Degradation of biological potency in led light sources with lifetime

AU - Belgers, S.

AU - Schlangen, Luc J.M.

AU - Cuijpers, Raymond H.

AU - Heynderickx, Ingrid E.J.

PY - 2023/9/18

Y1 - 2023/9/18

N2 - 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.

AB - 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.

KW - LED aging

KW - Melanopic equivalent daylight illuminance

KW - Biological potency

KW - Blue light hazard

KW - Chromaticity

KW - lumen maintenance

U2 - 10.25039/x50.2023.PP003

DO - 10.25039/x50.2023.PP003

M3 - Conference contribution

SN - 978-3-902842-77-0

VL - 1

SP - 689

EP - 696

BT - Proceedings of the 30th session of the CIE, CIE 2023

PB - CIE

T2 - The 30th Quadrennial Session of the CIE (CIE 2023)

Y2 - 18 September 2023 through 20 September 2023

ER -

Degradation of biological potency in led light sources with lifetime

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