Interferometer using integrated imaging array and high-density polarizer array
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United States of America Patent
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Feb 1, 2005
Grant Date -
Apr 15, 2004
app pub date -
Oct 15, 2002
filing date -
Oct 15, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
An integrated imaging element for an interferometer generates at least one image that includes multiple interference portions with different relative phase shifts interleaved in a pattern having a high spatial frequency in the image. The interleaved pattern is at least partially determined by the pattern of a high density polarizing array used in the integrated imaging element. In various embodiments, the multiple interference portions are interleaved in a checkerboard pattern across the entire surface of a detector device. As a result, various non-common mode errors present in various interferometers that generate separate non-interleaved images for each relative phase are reduced or eliminated because multiple phase-shifted interference image information for a small region of an object is provided within a small region on the detector device.
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