GL Optic is proudly supporting this important event organized by the CIE at the Hight Tech Campus in Eindhoven. We know by now that the quality of lighting affects our circadian timing system and our well-being. We learned that contemporary lighting is not biologically neutral for human sleep, performance, alertness and mood. There are also reports that light can increase heart rate, improve alertness, alleviate seasonal and non-seasonal depression, influence thermoregulation, and affect the electroencephalogram (EEG) spectrum.