Holographic optical element for compact fingerprint imaging system

Michael H. Metz; Zane A. Coleman; Nicholas J. Phillips; Carl Flatow

doi:10.1117/12.235454

15 March 1996 Holographic optical element for compact fingerprint imaging system

Michael H. Metz, Zane A. Coleman, Nicholas J. Phillips, Carl Flatow

Proceedings Volume 2659, Optical Security and Counterfeit Deterrence Techniques; (1996) https://doi.org/10.1117/12.235454
Event: Electronic Imaging: Science and Technology, 1996, San Jose, CA, United States

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.

Citation Download Citation

Michael H. Metz, Zane A. Coleman, Nicholas J. Phillips, and Carl Flatow "Holographic optical element for compact fingerprint imaging system", Proc. SPIE 2659, Optical Security and Counterfeit Deterrence Techniques, (15 March 1996); https://doi.org/10.1117/12.235454

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