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Synthesis of Flat Diffractive Elements for 3D-Bas-Relief Images Formation
A.A. Goncharsky 1, S.R. Durlevich 1

Research Computing Center of the Lomonosov Moscow State University,
Leninskie Gory 1, p. 4, Moscow, 119991, Russia

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DOI: 10.18287/COJ1878

Article ID: 1878

Language: Russian

Abstract:
This article is devoted to the synthesis of flat optical elements for creating the effect of switching two 3D bas-relief images. The synthesized diffractive optical element has a multilevel structure formed by using electron beam lithography. The microrelief depth accuracy is 10 nm. When the optical element is illuminated with white light and tilted up and down, an observer sees the effect of switching two three-dimensional images. Videos captured from the fabricated optical element demonstrate the high efficiency of the developed synthesis method. The developed flat optical elements, replicated by using standard equipment for the mass production of security holograms, can be used to protect banknotes, passports, and securities.

Keywords:
computer optics, diffractive optics, optical security, 3D-image display, electron beam lithography.

Acknowledgements:
The results were obtained as part of the government project of Lomonosov Moscow State University “Development of methods for solving inverse problems of diagnostics and synthesis in wave models”.

Citation:
Goncharsky AA, Durlevich SR. Synthesis of Flat Diffractive Elements for 3D-Bas-Relief Images Formation. Computer Optics 2026; 50(5): 1878. doi: 10.18287/COJ1878.

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