Patent ID: 7993016

Claim:
A screen system comprising: a screen comprising: a two-dimensional retro-reflective surface configured to retro-reflect an image that passed through a diffusion layer to form a reflected image; the diffusion layer that receives the reflected image from the two-dimensional retro-reflective surface and diffuses the reflected image to form a viewing window corresponding to the image by diffusing the reflected image by a large diffusion angle in a first direction and diffusing the reflected image by a small diffusion angle in a second direction; and a transparent medium, positioned between the two-dimensional retro-reflective surface and the diffusion layer, that allows the image to be out of focus at the two-dimensional retro-reflective surface and wherein at least a portion of the out-of-focus image that was not retro-reflected by the two-dimensional retro-reflective surface is diffused by the diffusion layer.