Light deflecting element for guiding sunlight at different solar altitudes, has diffraction holograms arranged one behind the other for directing light from various incidence directions to common target region

摘要

The element has multiple diffraction holograms (HOE1,HOE2) which respectively deflect light from a certain incident direction to an outgoing direction. The holograms are arranged one behind each other and are formed so that they deflect light from the different incident directions to the same outgoing direction or onto the same target region (11).