Spectral, polar and spectral-polar imagers for use in space situational awareness
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United States of America Patent
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Dec 5, 2017
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May 23, 2013
filing date -
May 23, 2012
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Abstract
An imager for imaging a plurality of images of a single scene over a plurality of disparate electromagnetic wavelength sets includes front-end optics for outputting a polychromatic, collimated image beam of the scene; a beam displacer configured for splitting the collimated image beam into spatially displaced, mutually parallel beams, and an imaging-sensor array configured for registration of the spatially displaced wavelength sets at disparate locations along the imaging-sensor array. In alternative versions, the beam displacer displaces constituent light beams based on at least one of wavelength and polarization. In various implementations, a back-end focusing element focuses each constituent beam onto a predetermined location along the imaging-sensor array. The imaging-sensor array is optimally configured for simultaneous sampling of the plural images focused thereupon by the back-end focusing elements.
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