Patent ID: 8982438
Filing Date: 2015-03-17
Classification: G03H

Abstract:
1. An apparatus for holography 3-dimensional display comprising: a recording light source configured to emit recording beams; an electrically addressable spatial light modulator (EASLM) configured to time sequentially modulate the recording beams according to hologram information, the hologram information comprising information regarding a plurality of partial images which are divided from a 3-dimensional image; an optically addressable spatial light modulator (OASLM) comprising a plurality of regions corresponding to the plurality of partial images; a scanning optical unit configured to transmit the modulated recording beams to the plurality of regions of the OASLM, in synchronization with the time sequential modulation of the recording beams; and a reproducing light source unit configured to produce a surface light and emit the surface light to the OASLM, wherein the reproducing light source unit comprises: a light source; and a transparent optical panel configured to face the OASLM and comprise an incidence surface through which a light from the light source is incident, a total reflection surface in which the incident light is totally reflected, and an emission unit through which the light is emitted, surface of the emission unit being parallel to a surface of the OASLM and facing the surface of the OASLM entirely, wherein the scanning optical unit comprises: a projection optical unit: a scanning active optical device configured to control a proceeding direction of the modulated recording beam; a beam folding optical panel having an incidence surface through which the modulated recording beam is incident and an emission surface through which the modulated light beam is output, the beam folding optical panel being configured to guide the modulated recording beams incident via the incidence surface by an internal total reflection and to emit the modulated recording beams at a predetermined position of the emission surface: and a directional optical panel configured to control the direction of the modulated recording beams emitted from the beam folding optical panel, and wherein the modulated recording beam is refracted at the incidence surface of the beam folding optical panel.