Color holographic wave-front printing technique

• Published in: 2015 IEEE 13th International Conference on Industrial Informatics (INDIN) pp. 686 - 690
• Main Authors: Hoonjong Kang, Stoykova, Elena, Youngmin Kim, Sunghee Hong, Joosup Park, Jisoo Hong
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.07.2015
• Subjects: color holographic recording; holographic printer; spatial light modulator; wavefront printer
• ISSN: 1935-4576; 2378-363X
• DOI: 10.1109/INDIN.2015.7281819

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.