© 2017 Bürklin GmbH & Co. KG
The natural daily rhythm of human beings has always been determined by sunlight. Unfortunately, the actual daily routine of most people does not follow this cycle and artificial light sources dominate the working day, e.g. in offices, schools, production facilities and public buildings. This means, wherever human beings are subject to the prolonged exposure to artificial and poor lighting conditions, they may suffer a loss of performance, reduced well-being, and risk to their health. The effect is not only a deterioration of productivity, but also of the quality of work.
LEDs and lighting concepts can contribute to a balanced illumination of rooms and support the adaptation of these to suit their respective purpose. In this context, the quality of the lighting is a decisive factor in terms of luminosity, color rendering, and naturalness of the colors compared to daylight. Modern LEDs can reach particularly high values under this aspect and are capable of an almost perfect simulation of the daylight.
In the year 2011, the lighting manufacturer OSRAM published the study "Effect of the lighting on the performance of pupils" in cooperation with the Transferzentrum für Neurowissenschaft und Lernen in Ulm, Germany, with the finding that the receptors in the human eye respond particularly well to blue light. Especially in the morning this has a positive impact on the performance and well-being. In this experiment, light for the classroom was generated using LED luminaires with a combination of blue and cool-white LEDs that reached a very high color temperature of 14,000 Kelvin, which is very close to the value of daylight.
While blue light has a particularly positive effect on performance in the daytime, the focus should be set on providing an indirect reddish lighting in the late afternoon and evening hours. Such a dynamic lighting system is realized, for example, using LEDs with color chips. An optimized control and color concept makes it always possible to generate any mood and to provide a pleasant and productive working atmosphere that avoids fatigue and maintains concentration capabilities. In combination with sensors it is possible to illuminate more rarely used areas in offices or larger areas in halls to suit requirements and, in addition, to save energy.
LED solutions return positive echoes not only from workplaces. This was confirmed by the "Municipalities in a new light" competition, in the wake of which German city and town municipalities were called upon to convert to LED technology for the lighting of public areas such as streets or squares. The results are quite impressive. There has been a significant improvement in lighting quality and the public has responded with increasing acceptance. A particularly positive emphasis was put on the color fidelity, as well as on the perception of brightness and security that comes along with the LED technology.