A method for producing bright full-color reflection one-step holographic stereograms using a single recording wavelength is described. The technique produces a trichromatic reseau pattern in which each column of image-plane `holographic pixels' is separated into red, green, and blue sub-columns, each of which conveys the necessary color separation information. The primary colors are produced by spatially selective pre- or post-exposure swelling of the sub- columns by the amounts needed to produce diffraction in the appropriate wavelengths. Preliminary results, produced using DuPont photopolymer Holographic Recording Film in conjunction with DuPont Color Tuning Film subjected to precisely masked ultra-violet pre- exposures, are presented. The parameters of this dry process single-laser full-color technique are discussed in the context of an automated holographic printer system.
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