Security system with optical key access

C. G. Treviño-Palacios; A. Olivares-Pérez; O. J. Zapata-Nava

doi:10.1117/12.742333

16 May 2007 Security system with optical key access

C. G. Treviño-Palacios, A. Olivares-Pérez, O. J. Zapata-Nava

Proceedings Volume 6422, Sixth Symposium Optics in Industry; 642218 (2007) https://doi.org/10.1117/12.742333
Event: Sixth Symposium Optics in Industry, 2007, Monterrey, Mexico

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.

Citation Download Citation

C. G. Treviño-Palacios, A. Olivares-Pérez, and O. J. Zapata-Nava "Security system with optical key access", Proc. SPIE 6422, Sixth Symposium Optics in Industry, 642218 (16 May 2007); https://doi.org/10.1117/12.742333

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