Patent ID: 9134699
Filing Date: 2015-09-15
Classification: G02B,G02F,G03H

Abstract:
1. A holographic three-dimensional (3D) image apparatus for generating a holographic 3D image, the apparatus comprising: a collimated directional backlight unit (CD BLU) to output a first collimated light; and a convergent lens to converge the first collimated light into a viewing area of a viewer of the holographic 3D image, wherein the first collimated light illuminates a spatial light modulator (SLM) that displays a holographic image pattern to perform spatially-varying modulation to the first collimated light, wherein the CD BLU comprises a light source to emit light, a collimating lens to collimate the light emitted by the light source to output a second collimated light, a collimated light deflection device to deflect the second collimated light to output a third collimated light and a patterned backlight unit to reflect the third collimated light to be outputted from a plurality of trapezoidal-shaped openings of the patterned backlight unit as the first collimated light, and wherein the collimated light deflection device adjusts the third collimated light incident to a surface of the patterned backlight unit by changing a shape of the collimated light deflection device or a spatial-location of the collimated light deflection device, so that the emitting angle of the first collimated light that projects out the CD BLU and enters the SLM is adjustable.