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. 19, 2013
Filed:
Oct. 23, 2009
Alexandru Nedelcu, Bourg la Reine, FR;
Philippe Bois, Cesson, FR;
Eric Costard, Massy, FR;
Thales, Neuilly sur Seine, FR;
Abstract
The invention relates to a multispectral imaging device comprising a multiple-quantum-well structure operating on inter-sub-band transitions by absorbing radiation at a wavelength λ lying within a set of wavelengths to which said structure is sensitive, said structure comprising a matrix of individual detection pixels, characterized in that the matrix is organized in subsets (E) of four individual detection pixels, a first individual detection pixel (P) comprising a first diffraction grating (R) sensitive to a first subset of wavelengths, a second individual detection pixel (P) comprising a second diffraction grating (R) sensitive to a second subset of wavelengths, a third individual detection pixel (P) comprising a third diffraction grating (R) sensitive to a third subset of wavelengths and a fourth individual detection pixel (P) not comprising a wavelength-selective diffraction grating, the first, second and third subsets of wavelengths belonging to the set of wavelengths to which said structure is sensitive.