In 2016 I wrote a paper for Thorn Lighting which turned into Masterclass for the Society of Light and Lighting. It was based around getting the balance of light in a space right before you added worries of Human Centric lighting as it was being called then.
Glare is a wonderful thing; it creates sparkle, glints and artistic flare. On the other hand glare is an awful thing; creating difficulty to see, veiling detail and tiring the eye.
Whether you love it or not depends on the situation, a club compared to the office, relaxing in the sun compared to driving the car. But we have developed measures to try and quantify glare and what the limits should be. UGR, or the unified glare rating, has been around for a long time. No, it’s not perfect. For one thing, how often do you sit, head at 1.2m above the floor, half way along a wall in a rectangular space and look directly across the room. Continue reading “Bright lights, another headache?”