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Proceedings Paper

Synthetized holography with resolution 500.000 dpi, holographic dust, computer read holograms, and nanogravure
Author(s): Libor Kotacka
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Paper 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.

Paper Details

Date Published: 18 November 2008
PDF: 6 pages
Proc. SPIE 7138, Photonics, Devices, and Systems IV, 71381D (18 November 2008); doi: 10.1117/12.818029
Show Author Affiliations
Libor Kotacka, Optaglio s.r.o. (Czech Republic)

Published in SPIE Proceedings Vol. 7138:
Photonics, Devices, and Systems IV
Pavel Tománek; Dagmar Senderáková; Miroslav Hrabovský, Editor(s)

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