Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1993-04-12
1995-01-24
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
356121, G01J 120
Patent
active
053844556
ABSTRACT:
A method and apparatus for obtaining fine resolution imaging of extended objects in the presence of unknown time-varying aberrations, wherein the method is accomplished by obtaining data corresponding to multiple, measurement-diverse images of the extended object collected for each of a plurality of aberration realizations. The object and unknown aberrations are then Jointly estimated, preferably using constrained likelihood-based estimation techniques. The apparatus utilizes a conventional optical system, at least two detector arrays for detecting a plurality of phase-diverse images, a shutter system so that a specklegram can be captured at each of the phase-diverse arrays for each of a plurality of aberration realizations, and a computer including a processor, sufficient memory restoring the digital data corresponding to the captured images, and logic for estimating the object and unknown aberrations.
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Environmental research Institute of Michigan
Lee John R.
Nelms David C.
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