Diffuser for light from light source array and displays incorporating same

Abstract From the Canadian patent

An optical structure placeable between a backlight array of point light sources and a planar display. The structure distributes light emitted by the point light sources to uniformly illuminate the plane of the display without , introducing significant viewing parallax. The emitted light is partially collimated within a preferred angular viewing range maximizing the display's , luminance when viewed from the normal direction. The structure is highly reflective, such that a substantial portion of any non-emitted light rays are internally reflected by the structure, increasing the likelihood that those rays will be subsequently emitted by the structure.