Viewing Zone Expansion of a Dual-Viewer Autostereoscopic Display with Inclined Interleaved Linear Fresnel Lens Arrays and a Time-Division Quadruplexing Directional Backlight.

A novel autostereoscopic display with a directional backlight unit using a pair of inclined interleaved linear Fresnel lens arrays is designed and evaluated. Different high-resolution stereoscopic image pairs are provided to each of the two viewers simultaneously by applying time-division quadruplexing. The viewing zone is enlarged in the horizontal direction by inclining the lens array, which enables two viewers to have specific views corresponding to the positions of their own eyes without interfering with each other's view. Thus, two viewers with no special goggles on can share the same 3D world, which enables direct-manipulation style interaction and collaboration maintaining eye contact with each other.