Holographically protected printwork

Alexander B. Coblijn

doi:10.1117/12.47112

1 October 1991 Holographically protected printwork

Alexander B. Coblijn

Proceedings Volume 1509, Holographic Optical Security Systems; (1991) https://doi.org/10.1117/12.47112
Event: ECO4 (The Hague '91), 1991, The Hague, Netherlands

Abstract

In this paper several methods for making holographically protected printwork (HPP) are discussed. This article refers to work of other people as well as work done in the author's own laboratory. In this booming field, successes as well as flops have been made. At this moment several holographic products such as dichromated gelatin holograms and embossed pvc- or polyester foils, for self adhesive stickers or hot-foil application, are used to create HPP.

Citation Download Citation

Alexander B. Coblijn "Holographically protected printwork", Proc. SPIE 1509, Holographic Optical Security Systems, (1 October 1991); https://doi.org/10.1117/12.47112

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KEYWORDS

Holography

Holograms

Information security

Safety

Adhesives

Beam splitters

Image registration

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