Prediction of the multiplex images appearance by computation of diffraction on their topology

Ilya S. Borisov; Valeriy I. Grygoruk; Sergey A. Kostyukevych

doi:10.1117/12.590217

21 April 2005 Prediction of the multiplex images appearance by computation of diffraction on their topology

Ilya S. Borisov, Valeriy I. Grygoruk, Sergey A. Kostyukevych

Proceedings Volume 5742, Practical Holography XIX: Materials and Applications; (2005) https://doi.org/10.1117/12.590217
Event: Integrated Optoelectronic Devices 2005, 2005, San Jose, California, United States

Abstract

The present work deals with the Multiplex Images (MIs) including stereographic and animated ones with opportunity to predict their appearance and behavior before they are recorded by Electron-Beam Lithography Equipment (EBLE). On the one hand the presence of MI in Optical Security Device (OSD) increases its structure complexity improving security properties; on the other hand it makes it more spectacular and visually impressive. The analysis of MI behavior on a visual level is based on the theoretical estimations of the diffraction by the phase reflecting Elemental Diffracting Grating (EDG) under the arbitrary Conditions of Lighting and Observation (CLO). These estimations start from the strict quantitative formulation of the Huygens-Fresnel principle that was by Kirchhoff presented in 1883. They are also used for the assignment of encoding parameters for MI. The approach of middle wave zone is used, i.e. the distinctions in CLO for different points of MI topology are taken into account, which provides the integrity of the scene during observation. To represent the diffraction results in the RGB color system, it has been proposed to use the non-linear color compensation. It allows to obtain more expressive highlights together with shadows within one computed angle shot. Experimental results show viability of the proposed approach to visualization. Undoubtedly, the opportunity of predicting the look of any MI, provided by this utility, is a powerful tool, which will help to create vivid and impressive diffractive images.

Citation Download Citation

Ilya S. Borisov, Valeriy I. Grygoruk, and Sergey A. Kostyukevych "Prediction of the multiplex images appearance by computation of diffraction on their topology", Proc. SPIE 5742, Practical Holography XIX: Materials and Applications, (21 April 2005); https://doi.org/10.1117/12.590217

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