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Proceedings Paper

Holographic optical element for compact fingerprint imaging system
Author(s): Michael H. Metz; Zane A. Coleman; Nicholas J. Phillips; Carl Flatow
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Paper Abstract

An edge-lit holographic optical element has been developed which produces a high contrast and high resolution fingerprint image. Continuing work on the development of a holographic optical element for use in a compact fingerprint imaging system is described. The hologram is combined with an electronic imaging array into a package only several millimeters thick, using no image transfer lens system. Previously reported results with green holograms are reviewed. New results are presented for red holograms illuminated by a laser diode. Design issues and experimental results are discussed, relating to selection of hologram operating wavelength, angular and wavelength sensitivity of the hologram, and image quality versus packaging volume tradeoffs.

Paper Details

Date Published: 15 March 1996
PDF: 11 pages
Proc. SPIE 2659, Optical Security and Counterfeit Deterrence Techniques, (15 March 1996); doi: 10.1117/12.235454
Show Author Affiliations
Michael H. Metz, ImEdge Technology, Inc. (United States)
Zane A. Coleman, De Montfort Univ. and Loughborough Univ. of Technology (United Kingdom)
Nicholas J. Phillips, De Montfort Univ. (United Kingdom)
Carl Flatow, ImEdge Technology, Inc. (United States)


Published in SPIE Proceedings Vol. 2659:
Optical Security and Counterfeit Deterrence Techniques
Rudolf L. van Renesse, Editor(s)

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