Leonid P. Yaroslavsky is a professor emeritus at Tel Aviv University. A fellow of the Optical Society of America, Dr. Yaroslavsky has authored more than 100 papers on digital image processing and digital holography.
M. Nisa Khan received her bachelor's degree in physics and mathematics from Macalester College, St. Paul, Minnesota, and her master's and PhD degrees in electrical engineering from the University of Minnesota, Minneapolis. In 2006, she started an independent research and engineering company in LED lighting and has been involved in innovation and technology development for making solid-state lighting more suitable for general lighting. Dr. Khan performs feasibility studies for LED lighting used in entertainment and signage industries and offers platform design and development solutions for general lighting applications. Since 2007, she has been writing the "LED Update" column for Signs of the Times magazine.