The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 22, 2002
Filed:
Sep. 21, 2000
Applicant:
Inventor:
Robert J. Martin, Orlando, FL (US);
Assignee:
Lockheed Martin Corporation, Bethesda, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 3/10304 ; H01L 3/10224 ;
U.S. Cl.
CPC ...
H01L 3/10304 ; H01L 3/10224 ;
Abstract
Exemplary embodiments of the present invention use a vertically stacked quantum well infrared detector where each “tuned” quantum well of the detector can be biased separately from any other quantum well of the detector. The vertically stacked detector can include three or more quantum well layers that are “tuned” to different peak wavelengths to permit detection of infrared radiation of three or more different bands or colors. The simultaneous detection of infrared radiation in three or more different spectral bands permits the determination of more information about an infrared source.