Healthy, natural, efficient and tunable lighting: four-package white LEDs for optimizing the circadian effect, color quality and vision performance

Ji Hye Oh; Su Ji Yang; Young Rag Do

doi:10.1038/lsa.2014.22

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Healthy, natural, efficient and tunable lighting: four-package white LEDs for optimizing the circadian effect, color quality and vision performance

Original Articles

- Healthy, natural, efficient and tunable lighting: four-package white LEDs for optimizing the circadian effect, color quality and vision performance
- Light: Science & Applications Vol. 3, Issue 1, (2014)
- Affiliations：
  
  Department of Chemistry, Kookmin University, Seoul 136-702, Korea
- Author bio：
  
  Professor YR Do, Department of Chemistry, Kookmin University, Seoul 136-702, Korea E-mail: yrdo@kookmin.ac.kr
- Funds：
- DOI：10.1038/lsa.2014.22
  CLC：
- Published：2014-03，
  
  Published Online：14 February 2014，
  
  Received：12 July 2013，
  
  Revised：06 September 2013，
  
  Accepted：17 October 2013
- Accepted：
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Oh, J. H., Yang, S. J. & Do, Y. R. Healthy, natural, efficient and tunable lighting: four-package white LEDs for optimizing the circadian effect, color quality and vision performance. Light: Science & Applications, 3, e141 (2014).
DOI：

Oh, J. H., Yang, S. J. & Do, Y. R. Healthy, natural, efficient and tunable lighting: four-package white LEDs for optimizing the circadian effect, color quality and vision performance. Light: Science & Applications, 3, e141 (2014). DOI： 10.1038/lsa.2014.22.

摘要

Abstract

To date

most current reports on the development and optimization of artificial lighting sources have focused on the energy performance levels and limited color qualities of white light-emitting diodes (LEDs). However

these properties are insufficient in terms of representing all performance levels required when adjusting white LEDs for healthy and smart lighting. Here

we introduce essential and advanced figures of merit pertaining to circadian performance as well as vision performance and color quality. We compare all possible properties of commercialized artificial lighting

daylight and four-package white LEDs which consist of long-wavelength pass dichroic filter (LPDF)-capped

phosphor-converted red

amber and green LEDs (pc-LEDs) and a blue LED. We show that these tunable four-package white LEDs produce a tunable circadian effect for melatonin suppression/secretion

a high color quality for color perception/reproduction

high efficiency for energy savings and tunable figures of merit for the smart LED lighting market.

关键词

Keywords

circadian effectcolor qualitysolid-state lightingvision performancewhite LED

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