by Christoph Keller

prototype for Schipper-Krome-gallery, Auguststraße 91, Berlin Mitte

The density of building generates a social gradient of sunlight in urban areas: The top floores take away the light of the ones living below. The device by-passes this gradient and creates a connection to the outside world by reflecting natural light to spaces that have never seen the sun before.

The helioflex-mirror device reflects direct sunlight permanently into dark habitations and shadowy urban backyards. Its construction consists of a reflective satellite-dish and a solar-powered tracking system that adjusts the angle of the mirror automatically to the current position of the sun.





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