Energy efficient lighting for the biological clock

摘要: Unexpectedly the existence of a formerly unknown type photoreceptor in human eye has been proven about 10 years ago. Primarily sensitive blue spectral range it is responsible for transducing light signals directly into the brain, controlling essential biological functions like setting circadian clock or daytime activation. Recent scientific research enabled beneficial applications. The paradigms good lighting design are shifting and standardization activities have started to build up sound base description application biologically effective lighting. Latest improvements LED technology now allowing realizeation advanced solutions based on SSL. Optimization effects possible while demands vision maintained. As addressing second system besides body measure beyond lumen per watt required proper energy efficiency.