Chapter Corner

Craig Casey

Craig Casey is a leader in applying LED’s disruptive technology to lighting for Lutron as a senior building science engineer. He works at the intersection of theory and applied science, quantifying the human and energy benefits of leading-edge lighting/daylighting control systems. 
He is active in the Illuminating Engineering Society’s (IES) Energy Management Lighting Controls Subcommittee, the Daylighting Terms Task Group, the Education Review Council and its Daylight Metrics Subcommittee, as well as the Architectural Simulation Subcommittee of the International Building Performance Simulation Association.

Six Questions to Guide Tunable White Decisions

Constant changes to LED technology can make keeping up with LED developments seem like a full-time job. Color tuning, and specifically tunable white, is one of today’s most intriguing control opportunities, but where do you start to ensure you’re making the best fixture and control decisions? Historically, fixtures have been purchased with a specific color temperature; however, emerging studies are confirming the human centric benefits of being able to change, or tune, a fixture’s correlated color temperature (CCT). Tunable white applications use more sophisticated LED drivers and light engines to control both the color temperature and the intensity of a fixture. The right solution for any project begins with asking the right questions.