Germany uses LED technology will blue sky and white clouds into the Office

Work in the blue sky, many office workers yearning. Researchers at the Furlong Hoff Institute of labor management and organization (IAO) in Germany, working with a LED technology company, developed a special roof light source. The light source to simulate the movement of the wind over the clouds, the natural state of light changes, resulting in the work of the vast sky feeling. New light level by 50 pieces of porcelain tile size of 50 cm, covering the entire roof. Each tile on the circuit board has 288 LED lights, circuit board fixed on the roof, in the LED lamp under the 30 cm with a white diffusion film, so that the surface is bright and uniform, can not see the light. In order to get the desired spectrum, the researchers used red, blue, green and white LED, through the combination can produce about 16000000 kinds of light. In addition, the white light-emitting diode power consumption less than color, more energy efficiency.

Key development is to replicate the virtual sky cloudy light. To this end, the researchers made a study of natural light, the clouds to grasp the changing patterns of time and speed of the spectrum, and then LED to simulate the dynamic. The researchers are committed to having enough light to change the mind of the indoor workers, while not allowing them to feel the changes in the light directly and avoid distracting them. Technical team doing preliminary research: asked 10 volunteers to work 4 days at 30X60 cm under the roof light: the first day of the second day use static light, light changes slowly, third days of changing speed, fourth days by the volunteers to choose, finally 8 people chose to quickly change the light. Survey results show that users feel comfortable for dynamic lighting.

Researchers has manufactured a 34 square meters of the "virtual sky" prototype, the installation of 34560 LED lights. Full power when the sky light up to 3000 lux, and the actual use of 500-1000 lux is enough. It is reported that the technology will be on display at the Hannover Information Technology Expo (2012, March).