Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1988-07-06
1990-08-28
Buczinski, Stephen C.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
250334, 250332, 2502031, 2502061, 358113, 35821324, G01J 120, H01L 2500
Patent
active
049528092
ABSTRACT:
An infra-red imaging system is operable selectively in wide and narrow field of view modes. Radiation from the object is imaged onto an infra-red CCD staring focal plane array (SFPA) which provides an output representing the image. In the narrow field of view mode, operative on detection of a particular target by target detection electronics, the image is not scanned but is made to follow any movement of the target, and the SFPA stares at the target to build up an image. In the wide field of view mode, the same SFPA is used to provide the image, but the image is scanned along a swath. Smearing of the image is minimized by driving the IRCCD array such that the image-bearing charge is passed down the array from element to element at a speed equal to the scanning speed, so that the output signal from the end element represents the intensity of radiation from a given portion of the object time-integrated by all the elements of the array in succession.
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patent: 4675532 (1987-06-01), Carson
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Buczinski Stephen C.
GEC--Marconi Limited
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