Zero-order diffractive microstructures for security applications

Michael T. Gale; Karl Knop; Rudolph H. Morf

doi:10.1117/12.17917

1 April 1990 Zero-order diffractive microstructures for security applications

Michael T. Gale, Karl Knop, Rudolph H. Morf

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Proceedings Volume 1210, Optical Security and Anticounterfeiting Systems; (1990) https://doi.org/10.1117/12.17917
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

Abstract

The optical characteristics of diffractive microstructures designed for zero-order read-out are discussed. Such devices offer new optical behaviour which can be exploited for applications in the field of visual and machine readable security features. They can be fabricated by low-cost embossing and evaporation techniques.

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Michael T. Gale, Karl Knop, and Rudolph H. Morf "Zero-order diffractive microstructures for security applications", Proc. SPIE 1210, Optical Security and Anticounterfeiting Systems, (1 April 1990); https://doi.org/10.1117/12.17917

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