Research/Patents/US 5449899
US 5449899

APPARATUS AND METHOD FOR HIGHLIGHTING RETURNS FROM OPTICALLY AUGMENTED TARGETS

Assignee

Filed

Oct 21, 1971

Granted

Sep 12, 1995

Location

NASHUA NH US

Abstract

A method and apparatus for highlighting returns from optically augmented targets includes in one embodiment a receiver, a viewing device coupled to the receiver and first and second illuminators. The first illuminator is arranged on axis with the receiver and the second illuminator is placed off-axis therefrom. Means are provided for switching on alternately the illuminators such that returns of the first illuminator through retroreflection from high quality optical targets will enter the receiver, while retroreflection returns of the off-axis illuminator will not enter the receiver; therefore the retroreflected returns from high quality optical targets will appear to flicker when seen on the viewing device and thus be highlighted above the rest of the scene.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Jan 29, 1982

Rescinded

Feb 8, 1995

Duration

13 years

Inventor

  • 1RONALD O. WILSON

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