BEAM DISTRIBUTING OPTICAL DEVICE, ILLUMINATING OPTICAL UNIT COMPRISING A BEAM DISTRIBUTING OPTICAL DEVICE OF SAID TYPE, OPTICAL SYSTEM COMPRISING AN ILLUMINATING OPTICAL UNIT OF SAID TYPE, AND PROJECTION LIGHTING APPARATUS COMPRISING AN OPTICAL SYSTEM OF SAID TYPE

摘要

A beam distribution optical unit serves for splitting an incident beam of illumination light into at least two emergent illumination-light beams. The beam distribution optical unit has at least one blazed reflection grating having reflective grating structures. The result is an optical unit in which a plurality of illumination-light beams are efficiently produced from one incident beam of illumination light.