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:
Nov. 07, 1995
Filed:
Sep. 28, 1993
Bruno Barbier, Bordeaux, FR;
Patrick Lach, Bordeaux, FR;
Sextant Avionique, Meudon la Foret, FR;
Abstract
The modulation by optical valves of three beam coming from a main or auxiliary primary beam of depolarized and collimated white light is achieved by means of two secondary beams of white light that are linearly polarized and perpendicular to each other. The undesirable color components are suppressed to constitute the three constituent color beams of the color image. Through the invention, the geometrical and spectral quality of the image is independent of the main or auxiliary primary beam and the image is as powerful as the one obtained by the standard method of projection. The auxiliary image can be used as a back-up or can be adapted to night-time projection.