3D LIGHT PROJECTION DEVICE

摘要

The present disclosure to a projection device for receiving and distributing a light beam, comprising: a light shaping element (10) comprising a light shaping profile (11) configured to form a profiled light beam; a lens element (20) configured to transform the profiled light beam into a spatial frequency domain to form a spatial frequency transformed light beam; a spatial frequency filtering element (30) configured to modify the spatial frequency transformed light beam in the spatial frequency domain to form a spatial frequency filtered light beam; and a holographic element (40) configured to diffract the spatial frequency filtered light beam, thereby forming a plurality of projected light beamlets (51) in a spatial volume.