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Proceedings Paper

Security system with optical key access
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Paper Abstract

In this work we present a security system that uses an optical key as control access device. The optical key is a computer generated hologram (CGH) recorded using optical damage onto a transparent material using a high power pulsed laser. When we reproduce the CGH with a laser we obtain the codified image on the holographic plane. Placing a camera in this plane the reconstructed image is captured. Using a comparing program that contains the prerecorded security image the access is authorized or denied.

Paper Details

Date Published: 16 May 2007
PDF: 6 pages
Proc. SPIE 6422, Sixth Symposium Optics in Industry, 642218 (16 May 2007); doi: 10.1117/12.742333
Show Author Affiliations
C. G. Treviño-Palacios, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
A. Olivares-Pérez, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
O. J. Zapata-Nava, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)


Published in SPIE Proceedings Vol. 6422:
Sixth Symposium Optics in Industry

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