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In this paper, we present the analysis of Fabry–Perot interferences in a twisted nematic liquid crystal display (LCD), and its influence on the modulation properties of the device. We develop a theoretical analysis based on the Jones matrix formalism and compare the results with the experimental response of a commercial display. The developed theory considers multiple reflections to derive a new Jones...
A properly preprocessed image of a colored scene can be used with conventional coherent correlators to recognize and locate colored patterns. Color information is encoded by means of gratings with different orientation, frequency and amplitudes. This codification permits to process polychromatic images in parallel with a monochromatic correlator.
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