BACKLIGHT UNIT FOR HOLOGRAPHIC DISPLAY APPARATUS AND HOLOGRAPHIC DISPLAY APPARATUS INCLUDING THE SAME

摘要

A backlight unit (BLU), for a binocular holographic display apparatus, and the binocular holographic display apparatus including the BLU are provided. The BLU includes: a light source unit that emits coherent illumination light; and a light guide plate that is transparent and includes a light incidence surface onto which the coherent illumination light emitted by the light source unit is incident and a light emission surface through which the illumination light is output. The light source unit includes a beam deflector that adjusts an incidence angle of the illumination light incident onto the light guide plate.

主权项

1. A backlight unit (BLU) comprising:
a light source unit that emits illumination light; a light guide plate that is transparent and comprises a light incidence surface, on which the illumination light emitted by the light source unit is incident, and a light emission surface through which the illumination light is emitted; an input coupler that directs the illumination light from the light source unit into the light guide plate; and an output coupler that is disposed on the light emission surface of the light guide plate, wherein the illumination light is emitted from the light guide plate through the output coupler, wherein the light source unit comprises a beam deflector that controls an incidence angle of the illumination light incident onto the light guide plate.