FIELD: physics.
SUBSTANCE: infrared sensor (IR- sensor) (1) contains discharge filter (6) behind which discharge detector (7) is mounted, and computer (8) connected to discharge detector (7). Discharge filter (6) contains the first filter (9) and the second filter (10) designed as strip filters and having respective transmission bands of which the first filter (9) passes established IR-strip, and the second filter (10) does not pass it. Discharge detector includes two detectors (14, 15) each of which has confronted filter (9, 10). Transmission band of one filter (10) lays within transmission band of the other filter (9). Computer (8) generates mismatch of signals (S1, S2) of detectors (14, 15) and normalises mismatch of signal (S1) of detector (14).
EFFECT: simplified design of specified infrared sensor.
4 cl, 6 dwg
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