Phase-noise type broad spectral bandwidth optical low-pass anti-aliasing filter

Phase-noise type broad spectral bandwidth optical low-pass anti-aliasing filter

A device is described for a very low cost anti-aliasing filter to be used to suppress aliasing artifacts present in discretely sampled solid-state electronic imaging devices. This device includes a transparent substrate upon which a multiplicity of transparent phase spots are placed. The diameter an...

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Hauptverfasser: HIRSH, JEFFREY I, REVELLI,JR.,JOSEPH FRANCIS, NUTT, ALAN C. G., EASTMAN KODAK COMPANY
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
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creator HIRSH, JEFFREY I
REVELLI,JR.,JOSEPH FRANCIS
NUTT, ALAN C. G., EASTMAN KODAK COMPANY
description A device is described for a very low cost anti-aliasing filter to be used to suppress aliasing artifacts present in discretely sampled solid-state electronic imaging devices. This device includes a transparent substrate upon which a multiplicity of transparent phase spots are placed. The diameter and thickness of the transparent phase spots are designed in such a way to cause just the right amount of blurring to suppress the aliasing artifacts, yet render a reasonable sharp image for spatial frequencies below the sampling frequency of the imager. This suppression is further accomplished over a broad spectral range. The phase noise filter thus formed can be placed either in object space or in image space.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
title Phase-noise type broad spectral bandwidth optical low-pass anti-aliasing filter
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