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:
Aug. 10, 2010
Filed:
Apr. 16, 2007
David J. Brady, Durham, NC (US);
Michael E. Gehm, Tucson, AZ (US);
David J. Brady, Durham, NC (US);
Michael E. Gehm, Tucson, AZ (US);
Duke University, Durham, NC (US);
Abstract
Embodiments of the present invention relate to systems and methods for spectral imaging. Electromagnetic energy emanating from an object is passed through a first dispersive element, a coded aperture, and a second dispersive element to a detector plane. A wavelength-dependent shift is created by the first dispersive element. The coded aperture modulates the image emanating from the first dispersive element. The wavelength-dependent shift is removed from the modulated image by the second dispersive element producing a wavelength-independent image measured by the detector. A spectral image of the object is calculated from the measured image, a wavelength-dependent shift of the first dispersive element, the code of the coded aperture, and a wavelength dependent shift of the second dispersive element. A spectral image can be calculated from measurements obtained in a single time step and from a number of measurements that is less than the number of elements in the spectral image.