OPTICALLY COUPLED DETECTOR IMAGING SYSTEM

摘要

A method for communicating a signal representative of an infrared detector element's output to electrically and thermally isolated signal processing circuitry utilizes the steps of: varying the reflectivity of a photoreflective cell (65) in response to the output of the infrared detector element (33) such that the reflectivity of the photoreflective cell is representative thereof; resetting the photoreflective cell when the reflectivity thereof reaches a predetermined value, optically scanning the photoreflective cell with an optical scanner (71) which is electrically and thermally isolated from the photoreflective cell; and counting (102) the number of times the photoreflective cell is reset so as to provide a signal representative of the infrared detector element's output.