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20 August 2009 Improving the color uniformity of a LED-array based illumination system with a tailored light distribution
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Abstract
We designed a compact illumination system based on a linear array of single package RGB LEDs which creates a tailored light distribution. Realistic optical simulations in Advanced Systems Analysis Program (ASAP ®) and a statistical approach in Matlab ® , are used to investigate the color uniformity. A clear trade-off between the capability to tailor the obtained light distribution and the color uniformity is found. Two methods to improve the color uniformity while maintaining the light tailoring capabilities of the optical design, are investigated: mixing the LED orientations and using anisotropic scattering properties. The aimed application is an illumination module for Ambilight ® television sets, although the investigated methods can be applied to other LED based illumination systems.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Youri Meuret, Lieve Lanoye, Filip Bruyneel, and Hugo Thienpont "Improving the color uniformity of a LED-array based illumination system with a tailored light distribution", Proc. SPIE 7423, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration VI, 74230N (20 August 2009); https://doi.org/10.1117/12.825255
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