CCD/LCD holographic recording and display

Amy S. Kransteuber; Don A. Gregory

doi:10.1117/12.341297

9 March 1999 CCD/LCD holographic recording and display

Amy S. Kransteuber, Don A. Gregory

Proceedings Volume 3715, Optical Pattern Recognition X; (1999) https://doi.org/10.1117/12.341297
Event: AeroSense '99, 1999, Orlando, FL, United States

Abstract

The combination of a high resolution charge-coupled device camera and a phase modulating liquid crystal array allows real-time holographic (interference) fringes to be detected and displayed. The original object may then be reconstructed optically. A modified Mach-Zehnder (Leith-Upatnieks) architecture is utilized for producing the required small object-to-reference beam angle. The hologram is updated and reconstructed at television field rates. Several analog reconstructions are presented as examples of the performance of the simple system. If the input scene is optically Fourier transformed, the system may be used to produce real-time Fourier transform matched filters. These filters can be displayed immediately in an optical correlator for pattern recognition applications.

Citation Download Citation

Amy S. Kransteuber and Don A. Gregory "CCD/LCD holographic recording and display", Proc. SPIE 3715, Optical Pattern Recognition X, (9 March 1999); https://doi.org/10.1117/12.341297

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KEYWORDS

LCDs

Holograms

Holography

Charge-coupled devices

Optical filters

CCD cameras

Optical correlators

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