Kevin Houser (PhD, PE, FIES, LC, LEED AP) is a professor at Oregon State University, editor-in-chief of LEUKOS, the journal of the Illuminating Engineering Society (IES), and co-founder of Lyralux, Inc. He has published more than 125 publications about light and lighting. He has won the CIBSE Leon Gaster Award, IES Taylor Technical Talent Award three times, the IES Presidential Award, and is a Fellow of IES. His recent work focuses on human perceptual and biological responses to optical radiation and the application of that knowledge to the spectral design of light sources.