Proceedings PaperSynthetized holography with resolution 500.000 dpi, holographic dust, computer read holograms, and nanogravure
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Our paper deals with the survey of currently exploited electron-beam technologies to produce several protective optical elements. The computer-synthesized security elements are recorded with a resolution reaching 500.000 dpi and are specially developed for the security of the most important state valuables and documents. We shall mention some principal features, where the ultra-precise recording of diffractive elements is exploited.