Holographic security media prepared from photochromic fluorescent films

Jeonghun Kim; Eunkyoung Kim

doi:10.1117/12.801398

21 October 2008 Holographic security media prepared from photochromic fluorescent films

Jeonghun Kim, Eunkyoung Kim

Proceedings Volume 7118, Optical Materials in Defence Systems Technology V; 71180F (2008) https://doi.org/10.1117/12.801398
Event: SPIE Security + Defence, 2008, Cardiff, Wales, United Kingdom

Abstract

Holographic recording using a multi-functional photopolymer was explored for securities and anticounterfeit. The preparation of photofunctional photopolymer film was based on monomers and photochromic fluorescent material, which provides information recording and security of the information, respectively. The content of the monomer and photochromophore for such photopolymer film was optimized to give high diffraction efficiency and high photochromic contrast. A highly secure recording and reading method was suggested for the recorded information, based on diffraction, color and fluorescence change.

Citation Download Citation

Jeonghun Kim and Eunkyoung Kim "Holographic security media prepared from photochromic fluorescent films", Proc. SPIE 7118, Optical Materials in Defence Systems Technology V, 71180F (21 October 2008); https://doi.org/10.1117/12.801398

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