Research/Patents/US 5065026
US 5065026Tier 3 — General Defense

THERMAL BLACK-HOLE MASK

Assignee

US Government

Filed as: UNITED STATES OF AMERICA, THE, AS REPRESENTED BY THE SECRETARY OF THE ARMY

Filed

Feb 16, 1984

Granted

Nov 12, 1991

Location

FALLS CHURCH VA US

Abstract

The black hole which a cryogenically-cooled infrared (thermal) detector ctes in a scene being observed by another such detector is obscured by inserting a partial transmitter-reflector on the optical axis of the detector. A black-body radiator projects an ambient-temperature image the same size and shape as the black hole onto the transmitter-reflector such that the other detector sees a combined image with no apparent black hole.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Apr 2, 1985

Rescinded

Sep 6, 1990

Duration

5 years, 5 months

Inventor

  • 1MICHAEL HACSKAYLO

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