Combined Fourier hologram as a noise-resist method of synthesis 2D computer-generated hologram with single diffractive order

摘要

In this paper, a comparative analysis of two approaches to synthesis 2Dudhologram, which restores optical field without conjugated images, is performed. Theseudholograms are used in embossed rainbow protective holograms to improve their forgeryproofudcharacteristics. As a basis, one method of kinoform hologram synthesis is used,udwhich allows to obtain the restored image of acceptable quality, but phase-matchingudcondition is necessary to complete. That limits usage of this method in mass productionudof embossed holograms. The offered method of combined holograms is based onudaddition of optical fields restored by separated Fourier holograms. This method let us toudavoid hard requirements to technical process on resist – polymer relief translatingudaccuracy. Thus, the proposed method can be recommended for application in massudproduction of rainbow protective holograms.