Over the past two years, I had the pleasure of working with an extraordinary group of lighting professionals–Carol Jones, Naomi Miller, Leslie North, Peter Ngai, Dawn DeGrazio, Veda Clark and Yukiko Yoshida–on the development of Light + Design: A Guide to Designing Quality Lighting for People and Buildings. This 192-page document is a practical guide [...]

The International Dark-Sky Association (IDA) is promoting BUG, a classification system for outdoor luminaires (PDF file). Based on the TM-15–the upgrade of the roadway shielding classification system by the Illuminating Engineering Society and the Lighting Research Center–the BUG system addresses light emitted from the luminaire in all directions, not just up into the sky. Called [...]

I wrote the below column for the April issue of Illuminate, published by Architectural Products Magazine, about the Commercial Lighting Solutions program produced by DOE to support organizations seeking to generate energy savings beyond ASHRAE 90.1-2004 without sacrificing lighting quality. I was also honored to take part in a charrette in Washington, DC to contribute [...]

Traditionally, lighting design for office applications has focused on making sure that there are sufficient maintained light levels on horizontal surfaces such as desktops. But research suggests that office workers prefer some light on vertical surfaces, confirming the beliefs of many lighting designers. Designing lighting to create brightness on vertical surfaces in the field of [...]