Patent ID: 9310621
Filing Date: 2016-04-12
CPC Classification: G02B,G03B,G03H,H04N

Claim Text:
1. A projection device displaying video corresponding to each screen on a plurality of the screens, comprising: an optical element comprising a hologram recording medium where information is multiplexedly recorded in each position so as to allow a coherent light beam incident from a direction to be diffused to a plurality of illuminated regions; an irradiation device configured to irradiate the optical element with the coherent light beam so as to allow the coherent light beam to scan the hologram recording medium; spatial light modulators, each spatial light modulator disposed to a position which overlaps each illuminated region; and projection optical systems, each projection optical system projecting a modulation image obtained on each spatial light modulator on corresponding screen, wherein each coherent light beam incident to a position of the hologram recording medium to is diffused to entire regions of the illuminated regions in order to illuminate the spatial light modulators.