Patent ID: 6441930
Filing Date: 2002-08-27
Classification: G02B,G03H

Abstract:
An apparatus for making holograms, comprising:a reference beam source for generating a reference beam; an object beam source for generating an object beam; a photosensitive material having a first surface and a second surface, said photosensitive material disposed in the beam paths of the beams generated by said reference beam source and said object beam source; object assembly for sequentially transmitting multiple two-dimensional images of a plurality of data slices upon said photosensitive material; a diffuser, wherein said diffuser includes a means for shifting said diffuser within its own plane between each exposure; and, means for varying the apparent distance between said object assembly and said photosensitive material, such that each of said two dimensional images is transmitted onto photosensitive material at a predetermined apparent respective distance from said photosensitive material.