Radiant energy – Calibration or standardization methods
Patent
1996-12-17
1999-02-02
Hannaher, Constantine
Radiant energy
Calibration or standardization methods
H01L 3100
Patent
active
058669000
ABSTRACT:
An image detection system (10) includes a derotation optics assembly (24) that stabilizes images viewed from a scene (14) by individual detector elements (31) in a focal plane array (32). The derotation optics assembly (24) also is used in providing scene based calibration to the individual detector elements (31). The derotation optics assembly (24) places images viewed from the scene (14) in a first rotation position. The individual detector elements (31) collect scene based energy at the first rotation position. The derotation optics assembly (24) places images viewed from the scene (14) in a second rotation position. The individual detector elements (31) collect scene based energy at the second rotation position. Comparisons are made among outputs of the individual detector elements (31) at the first and second rotation positions. Correction factors for each of the individual detector elements (31) are adjusted in response to the comparisons in order to compensate for the differing voltage offsets and gains among the individual detector elements (31).
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Harder James A.
Herrera Val J.
Jacobson Keith A.
Hannaher Constantine
Raytheon TI Systems Inc.
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