How to illuminate dark offices or flats with natural light and thus save on electricity charges? The problem of shaded rooms is solved by the design of scientists from the AGH University of Science and Technology in Krakow. The spherical heliostat will bring sunlight to the dark corners of our homes.

The device was prepared by Paweł Wajss from the Faculty of Energy and Fuels as part of his PhD program. The spherical heliostat brings sunlight into the room. In the center of the house, the flat mirror reflects the sunlight. There is also a mechanism for setting the device in the right direction and this way permanently illuminating the dark kitchen or corridor.

The proposed construction also solves the problem of wrongly located rooms, with small windows or shaded by other objects.