Research/Patents/US 4890075
US 4890075Tier 3 — General Defense

OPTICAL RADIATION LIMITER

Assignee

US Government

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

Filed

Jul 31, 1986

Granted

Dec 26, 1989

Location

ALEXANDRIA VA US

Abstract

A nonlinear optical fluid with radiation-absorbing small particles uniformly suspended in the fluid. For radiation below a threshold value, radiation passes through with slight attenuation. Above the threshold, only a limited level of radiation is passed, the limit being below the damage level of a sensitive optical detector.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Oct 7, 1987

Rescinded

Sep 7, 1989

Duration

1 year, 11 months

Inventor

  • 1JUERGEN L. W. POHLMANN

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