Patent ID: 9618903
Date: 2017-04-11
CPC Classifications: G03H

Claim:
1. A holographic image display device comprising: a laser backlight unit emitting laser light; a surface light converter receiving the laser light over a first area of a first surface of the surface light converter and emitting light over a second area of a second surface of the surface light converter, the second area larger than the first area; a spatial light modulator (SLM) comprising a liquid crystal display panel configured to implement an input holographic interference pattern by directly receiving the light emitted from the surface light converter over an entire surface of the SLM facing the surface light converter and projecting a holographic image from a second surface of the SLM to a viewing point; and an optical switching unit located between the laser backlight unit and the SLM to control polarization of the laser light, wherein the optical switching unit is configured to: