Thermoresponsive scattering coating for smart white LEDs

Jurica Bauer, Paul P C Verbunt, Wan Yu Lin, Yang Han, My Phung Van, Hugo J. Cornelissen, Joan J.H. Yu, Cees W.M. Bastiaansen, Dirk J. Broer

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)

Abstract

White light emitting diode (LED) systems, capable of lowering the color temperature of emitted light on dimming, have been reported in the literature. These systems all use multiple color LEDs and complex control circuitry. Here we present a novel responsive lighting system based on a single white light emitting LED and a thermoresponsive scattering coating. The coated LED automatically emits light of lower correlated color temperature (CCT) when the power is reduced. We also present results on the use of multiple phosphors in the white light LED allowing for the emission of warm white light in the range between 2900 K and 4150 K, and with a chromaticity complying with the ANSI standards (C78.377). This responsive warm white light LED-system with close-to-ideal emission characteristics is highly interesting for the lighting industry.

LanguageEnglish
PagesA1868-A1879
Number of pages12
JournalOptics Express
Volume22
Issue number25
DOIs
StatePublished - 1 Jan 2014

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light emitting diodes
coatings
scattering
color
illuminating
dimming
phosphors
industries
temperature

Cite this

Bauer, J., Verbunt, P. P. C., Lin, W. Y., Han, Y., Van, M. P., Cornelissen, H. J., ... Broer, D. J. (2014). Thermoresponsive scattering coating for smart white LEDs. Optics Express, 22(25), A1868-A1879. DOI: 10.1364/OE.22.0A1868
Bauer, Jurica ; Verbunt, Paul P C ; Lin, Wan Yu ; Han, Yang ; Van, My Phung ; Cornelissen, Hugo J. ; Yu, Joan J.H. ; Bastiaansen, Cees W.M. ; Broer, Dirk J./ Thermoresponsive scattering coating for smart white LEDs. In: Optics Express. 2014 ; Vol. 22, No. 25. pp. A1868-A1879
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abstract = "White light emitting diode (LED) systems, capable of lowering the color temperature of emitted light on dimming, have been reported in the literature. These systems all use multiple color LEDs and complex control circuitry. Here we present a novel responsive lighting system based on a single white light emitting LED and a thermoresponsive scattering coating. The coated LED automatically emits light of lower correlated color temperature (CCT) when the power is reduced. We also present results on the use of multiple phosphors in the white light LED allowing for the emission of warm white light in the range between 2900 K and 4150 K, and with a chromaticity complying with the ANSI standards (C78.377). This responsive warm white light LED-system with close-to-ideal emission characteristics is highly interesting for the lighting industry.",
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Bauer, J, Verbunt, PPC, Lin, WY, Han, Y, Van, MP, Cornelissen, HJ, Yu, JJH, Bastiaansen, CWM & Broer, DJ 2014, 'Thermoresponsive scattering coating for smart white LEDs' Optics Express, vol. 22, no. 25, pp. A1868-A1879. DOI: 10.1364/OE.22.0A1868

Thermoresponsive scattering coating for smart white LEDs. / Bauer, Jurica; Verbunt, Paul P C; Lin, Wan Yu; Han, Yang; Van, My Phung; Cornelissen, Hugo J.; Yu, Joan J.H.; Bastiaansen, Cees W.M.; Broer, Dirk J.

In: Optics Express, Vol. 22, No. 25, 01.01.2014, p. A1868-A1879.

Research output: Contribution to journalArticleAcademicpeer-review

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Bauer J, Verbunt PPC, Lin WY, Han Y, Van MP, Cornelissen HJ et al. Thermoresponsive scattering coating for smart white LEDs. Optics Express. 2014 Jan 1;22(25):A1868-A1879. Available from, DOI: 10.1364/OE.22.0A1868