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

doi:10.1364/OE.22.0A1868

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

Stimuli-responsive Functional Materials & Devices

Research output: Contribution to journal › Article › Academic › peer-review

3 Citations (Scopus)

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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.

Original language	English
Pages (from-to)	A1868-A1879
Number of pages	12
Journal	Optics Express
Volume	22
Issue number	25
DOIs	https://doi.org/10.1364/OE.22.0A1868
Publication status	Published - 1 Jan 2014

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title = "Thermoresponsive scattering coating for smart white LEDs",

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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AU - Bauer, Jurica

AU - Verbunt, Paul P C

AU - Lin, Wan Yu

AU - Han, Yang

AU - Van, My Phung

AU - Cornelissen, Hugo J.

AU - Yu, Joan J.H.

AU - Bastiaansen, Cees W.M.

AU - Broer, Dirk J.

PY - 2014/1/1

Y1 - 2014/1/1

N2 - 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.

AB - 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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Thermoresponsive scattering coating for smart white LEDs

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