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:
Feb. 25, 2014
Filed:
Mar. 23, 2007
Robert G. Benson, New Ipswich, NH (US);
Thomas J. Scanlon, Hampstead, NH (US);
Paul A. Czerepuszko, Hopkinton, MA (US);
Robert G. Benson, New Ipswich, NH (US);
Thomas J. Scanlon, Hampstead, NH (US);
Paul A. Czerepuszko, Hopkinton, MA (US);
FLIR Systems, Inc., Wilsonville, OR (US);
Abstract
A portable camera system () includes a lens () for forming a focused image of a survey scene () onto a focal plane array (). The focal plane array () comprises a cooled two dimensional array of quantum well infrared photo detectors, (QWIP) having a peak spectral responsivity in the wavelength range of 10.4 to 10.8 μm. The camera includes a cooled band pass optical filter () having a peak spectral transmittance approximately centered at a wavelength of 10.57 μm and a full width half maximum spectral transmittance bandwidth of approximately 10.3 to 10.7 μm. The camera system () is usable to detect an invisible gas plume in a video image of a survey scene if the gas plume contains sulfur hexafluoride (SF), ammonia, (NH), Uranyl Fluoride (UOF), or any other gas having an absorption band that that at least partially falls within the wavelength band 10.3 to 10.8 μm.