SPLIT-RING INFRARED DETECTOR
Assignee
WESTINGHOUSE ELECTRIC CORPORATION, A CORP OF COMMONWEALTH OF PA
Filed
Dec 24, 1990
Granted
Sep 24, 1996
Location
GLENWOOD MD US
Abstract
A resonant, photoconductive detector for infrared radiation in which a reduced-volume pattern of the photoconductor permits impedance-matching to free space. The photoconductor pattern is a split-ring pattern, typically made of HgCdTe, which is virtually cylindrically symmetric, yielding a non-polarization-sensitive response. The region below the patterned photoconductor is a quarter-wavelength resonant cavity type structure. The ohmic contacts are conductively distanced from one another by use of the split-ring pattern. Spacing dimensions are slightly less than a wavelength for the infrared wavelengths to be absorbed; but ring-width dimensions of the photoconductor are substantially less to effect the volume reduction and the corresponding detectivity and radiation-hardness improvements. The essentially cylindrical isotropic pattern eases fabrication by averaging etching nonuniformities.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Sep 13, 1991
Rescinded
Mar 19, 1996
Duration
4 years, 6 months
Inventor
- 1RICHARD C. MC KEE
Record Details
- Patent number
- US 5559331
- Application
- 00763279
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
Browse by Assignee
WESTINGHOUSE ELECTRIC CORPORATION, A CORP OF COMMONWEALTH OF PARelated by domain
SUPERCONDUCTING RADAR DECOYS AND CAMOUFLAGE (U)
AIR FORCE, UNITED STATES OF
METAL-COATED SUBSTRATE ARTICLES RESPONSIVE TO ELECTROMAGNETIC RADIATION, AND METHOD OF MAKING THE SAME
ADVANCED TECHNOLOGY MATERIALS, INC.
ELECTROMAGNETIC RADIATION ABSORPTIVE COMPOSITION CONTAINING INORGANIC COATED MICROPARTICLES
CAROLINA SOLVENTS, INC.
SYNTHETIC APERTURE ARRAY DIPOLE MOMENT DETECTOR AND LOCALIZER
HUGHES AIRCRAFT COMPANY A CORP. OF DELAWARE
BROADBAND ELECTROMAGNETIC ENERGY ABSORBER
CHOMERICS, INC., 77 DRAGON COURT, WOBURN, MA A CORP. OF DE
TECHNIQUE FOR DETECTING AND IDENTIFYING CERTAIN OBJECTS
SRI INTERNATIONAL, MENLO PARK, CA A CORP. OF CA