Patent ID: 8894216
Filing Date: 2014-11-25
Classification: G02B,G03H,G09F,H04N

Abstract:
1. An apparatus for projecting light in one or more patterns on a display surface, comprising: a light source outputting light; a diffraction assembly comprising one or more diffraction grating patterns diffracting the output light from the light source to generate a number of points, spots, or shapes in the output light from the light source; and an active mask with a raster receiving the output light from the diffraction assembly, the raster comprising a plurality of programmable optical shutter elements selectively operable to pass portions of the output light in the one or more patterns on the display surface, including a subset of the number of points, spots, or shapes provided in the output light received by the raster from the diffraction assembly for projection from the active mask, wherein the passed portions are projected at differing locations over time on the display surface such that the passed portions move over time on the display surface.