Optical system including focal plane array compensation techniqu

Details Optical system including focal plane array compensation techniqu Optical system including focal plane array compensation techniqu

1993-10-04

1994-12-13

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250216, 250332, 359726, H01J 4014

Patent

active

053731514

ABSTRACT:
An imaging optical system is described including an array of photodetectors, each photodetector having a surface, and a focusing system for focusing a beam of electromagnetic infrared energy on the surface of at least one of the photodetectors. The focusing system further includes a technique for periodically defocusing the beam of electromagnetic infrared energy on the surface of at least one of the photodetectors. With such an arrangement, a scanning and focusing system is provided wherein fixed pattern noise can be decreased.

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patent: 4664515 (1987-05-01), Imura et al.
patent: 5072890 (1991-12-01), Klaus, Jr. et al.
patent: 5093740 (1992-03-01), Dorschner et al.

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