Share Email Print
cover

Proceedings Paper

Thermoresponsive scattering coating for smart white LEDs
Author(s): Hugo J. Cornelissen; Joan Yu; Giovanni Cennini; Jurica Bauer; Paul P. C. Verbunt; Cees W. M. Bastiaansen; Dirk J. Broer
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

A novel responsive lighting system is presented capable of lowering the color temperature of emitted light on dimming. It is based on a single white light emitting LED and a thermo-responsive scattering coating. The coated LED automatically emits light of lower correlated color temperature (CCT) when the power is reduced, while maintaining a chromaticity close to the black body curve. Existing systems all use multiple color LEDs, additional control circuitry and mixing optics. An optical ray tracing model can explain the experimental results.

Paper Details

Date Published: 8 September 2015
PDF: 8 pages
Proc. SPIE 9571, Fourteenth International Conference on Solid State Lighting and LED-based Illumination Systems, 957106 (8 September 2015); doi: 10.1117/12.2189030
Show Author Affiliations
Hugo J. Cornelissen, Philips Group Innovation (Netherlands)
Joan Yu, Philips Group Innovation (Netherlands)
Giovanni Cennini, Philips Group Innovation (Netherlands)
Jurica Bauer, Technische Univ. Eindhoven (Netherlands)
Paul P. C. Verbunt, Technische Univ. Eindhoven (Netherlands)
Cees W. M. Bastiaansen, Technische Univ. Eindhoven (Netherlands)
Dirk J. Broer, Technische Univ. Eindhoven (Netherlands)


Published in SPIE Proceedings Vol. 9571:
Fourteenth International Conference on Solid State Lighting and LED-based Illumination Systems
Matthew H. Kane; Jianzhong Jiao; Nikolaus Dietz; Jian-Jang Huang, Editor(s)

© SPIE. Terms of Use
Back to Top