Big louvers as light reflector in Wiesbaden, by Thomas Herzog 
Two large aluminum louvers that pivot around a horizontal axis can be controlled to adequate the sun shading as well as the light reflection of the Soka-Bau offices.
The aluminum moving elements are composed of two concave louvers that pivot around the façade horizontal axis. While the upper piece functions as sun protection and light reflector with its light redirecting louvers, the lower piece acts like an awning to allow views of the outside. When the sun is high the elements take a vertical position, stopping the direct radiation and permitting the entrance of the reflected light. In overcast days the elements remain horizontal, capturing the diffused daylight and redirecting it to the interior.
While the elements on the South façade are movable, the North façade has fixed elements that reflect the diffused natural light into the office spaces.