Our eyes can play tricks on us when it comes to color and how the eyes adapt. Lighting designs are affected, positively and negatively, by this. Understanding basic vision science, and how the eye perceives colors of objects and the environment, are important elements in design considerations. Comprehending color metrics that are used with conventional […]

Life ratings for SSL devices are often boiled down to a lumen maintenance (L70) level at a defined time. This specification applies only to the LED’s as measured by the chip's manufacturer. This seminar will explore IES TM21 and explain how LED chip manufacturers generate life ratings. We will also ask the question is there […]