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US Patent 7116418 Spectral imaging apparatus and methods

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Patent
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Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7116418
Date of Patent
October 3, 2006
Patent Application Number
10945404
Date Filed
September 20, 2004
Patent Primary Examiner
‌
F. L. Evans
Patent abstract

Spectral imaging apparatus and methods are disclosed. In one embodiment, a spectral imaging apparatus includes a spectral imaging apparatus includes a diffraction grating having one or more entrance apertures formed therein, a collecting reflecting element for reflecting said incident radiation to a diffractive surface of said diffraction grating, and a reimaging system adapted to provide a spectral image at a focal surface. The collecting reflecting element may include an aspherically-shaped portion, and the entrance apertures may be distributed along a straight or a non-straight axis. Alternately, optical fibers may be disposed in the entrance apertures. The spectral image provides a spectrum of radiation such that a first portion of the spectrum of radiation from a first region can be distinguished from a second portion of the spectrum of radiation from a second region.

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