Hybrid optical encryption of a 3-D object using a digital holographic technique

Takanori Nomura; Kaoru Uota; Yoshiharu Morimoto

doi:10.1117/1.1789991

1 October 2004 Hybrid optical encryption of a 3-D object using a digital holographic technique

Takanori Nomura, Kaoru Uota, Yoshiharu Morimoto

Author Affiliations +

Optical Engineering, Vol. 43, Issue 10, (October 2004). https://doi.org/10.1117/1.1789991

Abstract

An encryption method of a 3-D object based on the phase modulation of an object wave is proposed. The phase of the object wave is modulated by a virtual optical random phase mask using a digital holographic technique. The keys of an encryption step are both a phase distribution and a position of the virtual optical phase mask. If either of them is not correct, we cannot decrypt the 3-D object. Owing to a characteristic of a hologram, we can see some parallax of a reconstructed 3-D object. Experimental results are presented to confirm the proposed method.

©(2004) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Takanori Nomura, Kaoru Uota, and Yoshiharu Morimoto "Hybrid optical encryption of a 3-D object using a digital holographic technique," Optical Engineering 43(10), (1 October 2004). https://doi.org/10.1117/1.1789991

Published: 1 October 2004

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