CONVERTER OF THERMAL IMAGE COLUMN INTO ELECTRIC SIGNAL Russian patent published in 2000 - IPC

FIELD: optoelectronic equipment, in particular, for monitoring and identification of objects in infrared light. SUBSTANCE: thermal image column with elementary radiation intensity A-i is modulated by special purpose raster using periodic signals with frequencies , which are multiples of base frequency Ω.. Signal is received by one photodetector with frequency signal compression. Frequency selection for producing electric signals of U_i. is made using n frequency-modulated reference signals. Reference signal (n+1) whose frequency is a molteple of Ω, is used by noise analyzer to discriminate RMS noise value used by noise compensator to correct U_i.. EFFECT: increased resolving power. 4 cl, 5 dwg