1 October 1991 Nondiffractive optically variable security devices
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Proceedings Volume 1509, Holographic Optical Security Systems; (1991) https://doi.org/10.1117/12.47115
Event: ECO4 (The Hague '91), 1991, The Hague, Netherlands
This paper discusses security applications of reversible photosensitivity that resulted from a search in SECURIDAT--viz. dual fluorescence with longwave remanence, thermochroism, stimulation of mixed inorganic phosphors, and photochroism.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Rudolf L. van Renesse, Rudolf L. van Renesse, "Nondiffractive optically variable security devices", Proc. SPIE 1509, Holographic Optical Security Systems, (1 October 1991); doi: 10.1117/12.47115; https://doi.org/10.1117/12.47115

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