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. 04, 2011
Filed:
Nov. 19, 1999
Laurent Bignolles, Bordeaux, FR;
Laurent Bignolles, Bordeaux, FR;
Thomson-CSF Sextant, Velizy Villacoublay, FR;
Abstract
The disclosure relates to a compact optical device, intended for use in a night vision telescope, that includes an objective, a standard light intensifier that rotates the image through 180° between its entry and its exit, an eyepiece, and four optical deflections, one in the objective and three in the eyepiece. The eyepiece, producing a single intermediate image between its entry and its exit, includes a combiner whose deflection angle α depends on its optical index n and the half-field θ of the device. The field width of the device is at least 40°. The invention is applicable notably to night vision binoculars for aircraft or helicopter pilots.