| 摘要 |
In order to clearly reveal modifications, even small alterations occurring in a controlled object space (1), the thermal infrared radiation of the object space (1) is represented by means of an infrared objective (2) on two different infrared detectors (3, 4; 3', 4') and having each different spectral selectivity characteristics. Those two representations are serially scanned to form two sequences of electrical signals (5, 5'). One of those signal sequences (5') is reproduced on a television monitor (7) directly in a predetermined color (8') and the reproduction of the other signal sequence (5) is delayed and is effected in another color (9'). |
