Evaluation of light-emitting diodes for signage applications Jean Paul Freyssinier, Yutao Zhou, Vasudha Ramamurthy, Andrew Bierman, John D. Bullough and Nadarajah Narendran Lighting Research Center Rensselaer Polytechnic Institute, Troy, NY 12180 www.lrc.rpi.edu Freyssinier, J.P., Y. Zhou, V. Ramamurthy, A. Bierman, J.D. Bullough, and N. Narendran. 2004. Evaluation of light-emitting diodes for signage applications. Third International Conference on Solid State Lighting, Proceedings of SPIE 5187: 309-317. Copyright 2004 Society of Photo-Optical Instrumentation Engineers. This paper was published in the Third International Conference on Solid State Lighting, Proceedings of SPIE and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.