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Optical Engineering • Open Access

Optical security device providing fingerprint and designed pattern indicator using fingerprint texture in liquid crystal
Author(s): Keizo Nakayama; Junji Ohtsubo

Paper Abstract

An optical security device providing the function of a fingerprint for authentication along with a designed pattern storage function has been proposed. The proposed device uses the random fingerprint texture in the chiral nematic phase of an ultraviolet-curable liquid crystal. Using photopolymerization along with a mask of the designed pattern, a unique pattern can be fixed in the shape of the designed pattern. The random patterns can be used as a fingerprint for such devices. This proposed device has the potential to be an optical security device and an authenticity or information indicator for the user.

Paper Details

Date Published: 20 April 2012
PDF: 4 pages
Opt. Eng. 51(4) 040506 doi: 10.1117/1.OE.51.4.040506
Published in: Optical Engineering Volume 51, Issue 4
Show Author Affiliations
Keizo Nakayama, Kinki Univ. (Japan)
Junji Ohtsubo, Shizuoka Univ. (Japan)

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