Thermal scanning devices
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United States of America Patent
Stats
-
Feb 9, 1982
Grant Date -
N/A
app pub date -
Jul 18, 1980
filing date -
Jul 20, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An optical scanning device is provided of the kind having optical elements which are rotated and/or oscillated to scan incident light across a detector array. By arranging for successive scans of a plurality of rows of detector elements to overlap, each line of picture information of a scene under surveillance is scanned at least twice during a complete monitoring of the scene, the corresponding detector array output signals being summed to assemble a plurality of summed signals in which there is coherent addition of picture information and incoherent addition of noise. The summed signals are processed into television format for display.
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