Color holographic wave-front printing technique

The paper presents design and implementation of a color wavefront holographic printer for white light viewable holograms of three-dimensional (3D) objects from digital contents. The printed hologram was composed as a two-dimensional (2D) array of elemental holograms. The 3D information was encoded in computer generated holograms displayed in succession on an amplitude spatial light modulator. Filtering of the light beam diffracted from the modulator extracted the beam coming from the object. Its demagnified version was recorded onto the holographic emulsion. The small size elemental hologram made possible application of mosaic delivery of exposures at primary colors. A modified phase-added stereogram approach was proposed to accelerate computer generation of digital contents. We achieved bright 3D reconstruction with a motion parallax at saturated colors from holograms of test objects that were printed on a silver-halide emulsion. Two quality enhancement approaches were developed.