Optical encryption method using zone plates

John Freddy Barrera; Rodrigo H. Henao; Roberto Daniel Torroba

doi:10.1117/12.591619

21 October 2004 Optical encryption method using zone plates

John Freddy Barrera, Rodrigo H. Henao, Roberto Daniel Torroba

Proceedings Volume 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications; (2004) https://doi.org/10.1117/12.591619
Event: 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, 2004, Porlamar, Venezuela

Abstract

We present the implementation of an optical encryption method using zone plates. The optical security system is based on using a computer generated phase mask. In the encryption process the phase mask is placed in the Fourier plane of the object to be encrypted. The original-data recovering is performed by digital reconstruction using the conjugate of the encryption mask. Theoretical background and computer simulations are presented to demonstrate the method.

Citation Download Citation

John Freddy Barrera, Rodrigo H. Henao, and Roberto Daniel Torroba "Optical encryption method using zone plates", Proc. SPIE 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, (21 October 2004); https://doi.org/10.1117/12.591619

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