Calibration of infra red cameras
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United States of America Patent
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Aug 7, 2007
Grant Date -
May 5, 2005
app pub date -
Mar 4, 2003
filing date -
Mar 8, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A reference surface for calibrating cooled infra red detectors includes a plurality of corner cube units which reflect radiation incident directly on them. The surface of each corner cube unit is partially reflective and partially emissive such that, when imaged by a cryogenically cooled detector, the reference surface appears as a black body source at a lower temperature than the actual temperature thereof.
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