Synthetized holography with resolution 500.000 dpi, holographic dust, computer read holograms, and nanogravure

Libor Kotacka

doi:10.1117/12.818029

18 November 2008 Synthetized holography with resolution 500.000 dpi, holographic dust, computer read holograms, and nanogravure

Libor Kotacka

Author Affiliations +

Proceedings Volume 7138, Photonics, Devices, and Systems IV; 71381D (2008) https://doi.org/10.1117/12.818029
Event: Photonics, Devices, and Systems IV, 2008, Prague, Czech Republic

Abstract

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.

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Libor Kotacka "Synthetized holography with resolution 500.000 dpi, holographic dust, computer read holograms, and nanogravure", Proc. SPIE 7138, Photonics, Devices, and Systems IV, 71381D (18 November 2008); https://doi.org/10.1117/12.818029

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