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:
Jun. 29, 2004
Filed:
Jan. 26, 2001
Thomas George, La Crescenta, CA (US);
Daniel S. Choi, Los Angeles, CA (US);
Eric Jones, Los Angeles, CA (US);
California Institute of Technology, Pasadena, CA (US);
Abstract
A device for utilizing an optical infrared emitter/detector to sense substances of interest is provided. The infrared emitter/detector comprises a single crystal semiconductor, photonic band gap structure which functions both as an infrared emitter, a narrow-band filter, and as a broad-band infrared bolometer detector to exert wavelength control directly on the active element emitter/detector surface using the periodic symmetry of the photonic band gap structure to produce narrow wavelength “forbidden” optical transmission bands or modes to sense the presence of a specified substance in the environment. A system and method for sensing specific substances using the optical infrared emitter/detector of this invention in a sensor device is also provided. Finally, a method of manufacturing the infrared emitter/detectors of the present invention is also provided.