Security holograms employing perspectival anamorphosis and stereoscopy

Ivo Aubrecht

doi:10.1117/12.2017386

3 May 2013 Security holograms employing perspectival anamorphosis and stereoscopy

Ivo Aubrecht

Proceedings Volume 8776, Holography: Advances and Modern Trends III; 877609 (2013) https://doi.org/10.1117/12.2017386
Event: SPIE Optics + Optoelectronics, 2013, Prague, Czech Republic

Abstract

A holographic diffraction structure that features stereoscopic pair of records with distorted perspective in the plane of the structure is designed and realized. On normal illumination and oblique binocular observation, the structure provides illusion of seeing an image oriented upright to its plane and located under it. The structure can be used as security DOVID.

Citation Download Citation

Ivo Aubrecht "Security holograms employing perspectival anamorphosis and stereoscopy", Proc. SPIE 8776, Holography: Advances and Modern Trends III, 877609 (3 May 2013); https://doi.org/10.1117/12.2017386

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