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:
Jan. 11, 2022
Filed:
Dec. 04, 2014
Thales, Courbevoie, FR;
Catherine Antier, Elancourt, FR;
Thierry Midavaine, Paris, FR;
THALES, Courbevoie, FR;
Abstract
An imaging module includes a single-pupil head component with hyper-hemispherical entrance field with refractive entrance surface, concave exit face, a refractive central zone and reflective peripheral zone. The imaging module also includes a secondary mirror, an aberrations corrector having an aspherical lens, a focusing objective, and an aperture diaphragm between the aberrations corrector and the objective. The head component is quasi-afocal in the vicinity of the field of 90° angular radius, its entrance surface has a ½ vertex angle of smaller than 30°, the secondary mirror is aspherical with variable local focal length with a maximum local power for a zone used by a field of 90° angular radius and minimum smaller by at least a factor of 2 for a zone used by a field of angular radius smaller than 20°.