Ian Ashdown, FIES, Chief Scientist, Lighting Analysts Inc.
Ian Ashdown is a consultant with forty years’ experience in lighting design, research and development, and software engineering. He is currently Chief Scientist for Lighting Analysts Incorporated (Littleton, CO), and President of byHeart Consultants and SunTracker Technologies (West Vancouver, BC). He is an Illuminating Engineering Society Fellow and an International Lighting Commission (CIE) Advisory member. With a Bachelor’s degree in electric engineering and a Master’s degree in computer science, he holds more than 120 patents and patents pending, mostly with Philips and Cooledge Lighting. He has written 42 academic papers, 91 articles, 6 book chapters, and a book – Radiosity: A Programmer’s Perspective – that today is the foundation of Lighting Analysts’ AGi32 and ElumTools lighting design and analysis software. His current research interests include circadian-based lighting design and analysis. In particular, the capabilities of today’s software tools for architectural lighting design need to be extended to encompass spectral power distributions, non-visual spatial responsivity of the human eye, and temporal aspects related to human-centric lighting.