5 June 1990 Holographic optical security systems
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Proceedings Volume 10308, Holography; 103080L (1990) https://doi.org/10.1117/12.2283703
Event: SPIE Institutes for Advanced Optical Technologies 8, 1990, Tatabánya, Hungary
One of the most successful applications of Holography,in recent years,has been its use as an optical security technique.Indeed the general public's awareness of holograms has been greatly enhanced by the incorporation of holographic elements into the VISA and MASTERCHARGE credit cards.Optical techniques related to Holography,are also being used to protect the currencies of several countries against the counterfeiter. The mass production of high quality holographic images is by no means a trivial task as a considerable degree of expertise is required together with an optical laboratory and embossing machinery.This paper will present an overview of the principal holographic and related optical techniques used for security purposes.Worldwide, over thirty companies are involved in the production of security elements utilising holographic and related optical technologies.Counterfeiting of many products is a major criminal activity with severe consequences not only for the manufacturer but for the public in general as defective automobile parts,aircraft components,and pharmaceutical products, to cite only a few of the more prominent examples,have at one time or another been illegally copied.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
William F. Fagan, William F. Fagan, } "Holographic optical security systems", Proc. SPIE 10308, Holography, 103080L (5 June 1990); doi: 10.1117/12.2283703; https://doi.org/10.1117/12.2283703

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