Patent ID: 9140972
Filing Date: 2015-09-22
Classification: G02B,G03B

Abstract:
1. A display system comprising an image projector and an associated display screen, the display system designed to be used by an observer situated at a given location, the display screen comprising two transparent and substantially parallel faces, the display screen comprising, on at least one of the transparent faces, a plurality of regularly distributed patterns, wherein, since the image projector illuminates the screen under a plurality of angles of incidence determined by a position and a size of the display screen, the plurality of angles of incidence being centered on a mean angle of incidence, a percentage of a surface area of the display screen occupied by the patterns does not exceed 20% of the surface area of the display screen, the patterns comprise a diffractive structure in order to diffract light rays having at least the mean angle of incidence in one or more directions corresponding to the given location of the observer.