Research/Patents/US 5212384
US 5212384

SYSTEM FOR DETECTING A HOT SPOT IN AN INFRA-RED DETECTED LANDSCAPE

Assignee

TELECOMMUNICATIONS RADIOELECTRIQUES ET TELEPHONIQUES T.R.T.

Filed

Feb 5, 1981

Granted

May 18, 1993

Location

VELIZY FR

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.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Jun 17, 1982

Rescinded

Aug 2, 1991

Duration

9 years, 1 month

Inventor

  • 1JEAN-PIERRE FOUILLOY

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records