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. 28, 1992
Filed:
Mar. 14, 1991
Applicant:
Inventors:
Jean-Claude Lehureau, Ste Genevieve des Bois, FR;
Bruno Mourey, Palaiseau, FR;
Assignee:
Thomson-CSF, Puteaux, FR;
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
359301 ; 359495 ;
Abstract
In a device for the projection of images by means of liquid crystal panels, the two orthogonal components of light are used to build the image to be projected, thus giving a significant improvement in efficiency. To this end, before going through a liquid crystal panel, the light is separated into two beams having different directions as a function of their polarization, by means of a phase separator and then, after having undergone a phase modulation by the liquid crystal panel, these two beams are recombined to build the image given by the liquid crystal panel.