Research/Patents/US 5844735
US 5844735Tier 3 — General Defense

FABRY-PEROT INFRARED MULTIWAVELENGTH OPTICAL FILTER

Assignee

US Government

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

Filed

Jul 29, 1983

Granted

Dec 1, 1998

Location

OAKTON VA US

Abstract

An optical material having an index of refraction dependent on wavelength of incident radiation is used between the reflectors of an off-normal Fabry-Perot cavity used as an interference filter. External to the cavity, and in the direction of incident radiation, another optical material having an index of refraction dependent on wavelength of radiation is placed. The incident radiation is thus refracted into and within the cavity dependent on its wavelength. By proper choice of the indices of refraction, and other variables, the filter may be designed to exactly match the output spectrum of a line spectrum laser, and to transmit all spectral lines of the laser, but to reflect all other radiation of interest.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Mar 19, 1986

Rescinded

Feb 12, 1998

Duration

11 years, 11 months

Inventor

  • 1RICHARD R. SHURTZ

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