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Research/Patents/US 5149969
US 5149969

INFRARED SURVEILLANCE DEVICE

Assignee

TELECOMMUNICATIONS RADIOELECTRIQUES ET TELEPHONIQUES T.R.T.

Filed

Jun 14, 1984

Granted

Sep 22, 1992

Location

VELIZY FR

Abstract

An infrared thermographic optical scanner is comprised of a first optomechanical device fitted with an entrance objective, at least a raster scan element, and a plane of infrared detectors on which the infrared radiation is focused in the form of lines. Further, there is provided a second optomechanical device made up of an orientable tilted periscope-head mirror and a derotator. The derotator is maintained clamped with respect to the head mirror coupling means for operation in the panoramic mode in a predetermined first angular position such that all lines scanned are parallel to each other, the raster scanning movement being obtained by maintaining the position of the raster element fixed, and by simultaneously causing the rotation of the head mirror, and at half-speed, causing the rotation of the derotator.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Aug 11, 1987

Rescinded

Aug 2, 1991

Duration

3 years, 11 months

Inventor

  • 1JEAN-PIERRE FOUILLOY

Technology Domains

Sensors

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External Sources

Google Patents — US 5149969USPTO Full Patent (PDF)Browse active SO patents

Record Details

Patent number
US 5149969
Application
06640146
Aerospace match
Yes
Dataset source
35 USC §181 SO records

Browse by Assignee

TELECOMMUNICATIONS RADIOELECTRIQUES ET TELEPHONIQUES T.R.T.
Back to patent indexSource: USPTO 35 USC §181 secrecy order records