Homogenizing electrical signals generated by a detection system and transmitted to an exploiting system
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United States of America Patent
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Dec 7, 1993
Issued Date -
N/A
app pub date -
Aug 6, 1992
filing date -
May 16, 1989
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Expired
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Abstract
An exploiting or readout circuit for a linear or matrix type photodetector array is of the multiplex type, such as a charge-coupled device (CCD). The exploiting circuit has a number of input stages corresponding to the number of photodetectors or similar photosites, and the gains of the input stages are established as a function of the fields of view of their associated photodetectors. In one embodiment the input stages each comprise a storage device formed of a first and a second storage electrode separated by a dividing electrode, the storage electrodes having respective surface areas selected in a relation that varies as a function of solid angle field of view of the respective photodetector. In another embodiment the input stage can include an OpAmp with a negative feedback capacitor whose value is selected as a function of the viewing solid angle of the respective photodetector.
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