25 October 1989 Phase Only Liquid Crystal Light Modulator And Its Application In The Fourier Plane Of Optical Correlation Systems
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Proceedings Volume 1134, Optical Pattern Recognition II; (1989) https://doi.org/10.1117/12.961635
Event: 1989 International Congress on Optical Science and Engineering, 1989, Paris, France
Abstract
It has been shown theoretically that optical correlation systems which use phase only filters are capable of producing sharp correlation peaks and good discrimination between different input objects, whilst at the same time having high optical efficiency. In addition to this, the resolution required in the filter plane is very much lower than that required for an equivalent conventional Van der Lugt correlator using a matched filter which has been made holographically. Here, we describe a flexible phase only filter implemented using a special-purpose liquid crystal spatial light modulator, and present results which demonstrate how it can be applied in optical correlation systems.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Thomas H. Barnes, Kenji Matsumoto, Tomoaki Eiju, Kiyofumi Matsuda, Naotake Ooyama, "Phase Only Liquid Crystal Light Modulator And Its Application In The Fourier Plane Of Optical Correlation Systems", Proc. SPIE 1134, Optical Pattern Recognition II, (25 October 1989); doi: 10.1117/12.961635; https://doi.org/10.1117/12.961635
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