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. 27, 2017
Filed:
Jul. 10, 2014
Applicant:
Massachusetts Institute of Technology, Cambridge, MA (US);
Inventor:
Michael P. Chrisp, Burlington, MA (US);
Assignee:
Massachusetts Institute of Technology, Cambridge, MA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J 3/28 (2006.01); G01J 3/02 (2006.01); G01J 3/18 (2006.01); G01J 3/12 (2006.01);
U.S. Cl.
CPC ...
G01J 3/2823 (2013.01); G01J 3/021 (2013.01); G01J 3/0205 (2013.01); G01J 3/0208 (2013.01); G01J 3/0256 (2013.01); G01J 3/1804 (2013.01); G01J 2003/1204 (2013.01); G01J 2003/1273 (2013.01);
Abstract
An imaging spectrometer, covering the visible through infrared wavelengths, which disperses the light by a plane diffraction grating behind a wedged optical element. This design uses an achromatic doublet lens with a reflective coating on its convex back surface to produce the spectra on a flat detector. Spatial keystone distortion and spectral smile are controlled to less than one tenth of a pixel over the full wavelength range, facilitating the use of simple retrieval algorithms.