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:
Jul. 18, 2017
Filed:
Dec. 17, 2013
Thales, Courbevoie, FR;
Thierry Midavaine, Elancourt, FR;
THALES, Courbevoie, FR;
Abstract
A method is provided for detecting a target not emitting in the wavelength region lying between 1 μm and 1.9 μm. The target is situated in a night sky luminous environment of level less than or equal to 4. Use is made of an imaging device of focal length f and of pupil diameter D, comprising at least one detector comprising types of pixels configured to operate in the wavelength region lying between 1 μm and 1.9 μm, the detectors exhibiting a noise level of less than 0.6×10/(f/D), and from the image obtained by this device is extracted at least one negative-contrast zone, that is to say a black zone on a bright background corresponding to the presence of the target in the night sky of level less than or equal to 4.