Research/Patents/US 5270872
US 5270872Tier 3 — General Defense

SUPERCONDUCTING SUBMICRON FILTER

Assignee

US Government

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

Filed

Jul 20, 1989

Granted

Dec 14, 1993

Location

TIPP CITY OH US

Abstract

An optical filter structure for selectively blocking radiation of predetermined wavelength is described which comprises a layer of material characterized by transition from a superconducting phase to insulating phase upon heating to a characteristic transition temperature, deposited on a slab of dielectric material in the form of a plurality of multipole elements in a planar array of predetermined spacing of optical dimensions between adjacent rows and columns of said array.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Jan 17, 1990

Rescinded

Oct 7, 1991

Duration

1 year, 8 months

Inventor

  • 1ROBERT J. SPRY

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