Abstract: An electro-optical system comprising a turret and a thermal reference source that is located exterior to the turret. The turret houses a detector array and optical elements that provide different fields of view for the detector array. One or more windows are provided in the turret through which energy passes to the detector array. The optical elements and detector are moveable or rotatable so that the detector array may view the exterior thermal reference source for calibration purposes and an image scene during normal operation.

Abstract: An optically scanned monolithic focal plane array includes an on-chip aperture corrector interposed between the photodetector output register and the multiplexer, thereby providing data to the aperture corrector in an order parallel to the direction of optical scan, advantageously eliminating any requirement for additional hardware for demultiplexing, memory or timing functions. The desired transfer function is achieved by providing a supplementary source of charge flow in addition to the photodetector signal, the supplementary charge flow being reduced in response to each signal charge packet at first and second intervals which are advanced and delayed respectively with reference to each corresponding signal charge packet by a selected interval. This reduction is proportional to a portion P of the signal charge packet which is determined by a charge splitting mechanism.