Enhancing the resolution of video cameras

Abstract

In a video camera, a light collecting lens 10 collects light incident from an object and passes it through an iris 20 to a segmenting mirror 30 which splits the light into two paths. Sequentially operable liquid crystal shutters 40, 41 control the transmission of light through the respective paths, and extending lenses 50, 51 extend the light of each path a number of times. The separate light paths are brought back together by correcting mirrors 32 and 33, and pass to a CCD unit 60, which converts the light signals into separate electrical signals for each path. The separate image path electrical signals are stored in respective memories 64 and 65, and output by an interpolating unit 70 which restores them to a single image signal of the original object, and this signal 15 passed to a signal processing unit 71. In this way, for a given number of pixels of the CCD unit 60, enhanced resolution is obtained, by expansion of each of the separated light paths. <IMAGE>

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    Publication numberPublication dateAssigneeTitle
    EP-0656724-A1June 07, 1995Hughes Aircraft CompanyScanning light valve sensor system