System for detecting a hot spot in an infra-red detected landsca

Details System for detecting a hot spot in an infra-red detected landsca System for detecting a hot spot in an infra-red detected landsca

1991-02-05

1993-05-18

Buczinski, Stephen C.

Radiant energy

Infrared-to-visible imaging

Including means for scanning field of view

244 311, 244 312, 250339, 250342, 358113, F41G 700, G02B 2610, G01J 100, H04N 533

Patent

active

052123847

ABSTRACT:
A system for detecting a hot spot in an infra-red detected landscape and which co-operates with a landscape scan system for converging towards an infra-red detector circuit a main beam emanating seriatim from various regions of the landscape; the system being characterized in that it comprises: optical filter means for preparing from the main beam consecutively in time at least two secondary beams each representing a part of the main beam spectrum; and a signal comparison circuit having an input connected to the detector circuit and whose output is the output of the system and which serves to compare the detector circuit signals corresponding to the various received secondary beams.

REFERENCES:
patent: 3451254 (1969-06-01), Maley
patent: 3478212 (1969-11-01), Turck
patent: 3796396 (1974-03-01), Crovella
patent: 3943277 (1976-03-01), Everly
patent: 4160164 (1979-07-01), Nakauchi
patent: 4220857 (1980-09-01), Bright
patent: 4247059 (1981-01-01), Duke et al.

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