A light control material includes a two-layer optical system for producing autostereoscopic and dynamic images in thin-film materials. The first layer comprises focusing optics which have a plurality of focusing elements. These elements may consist of refractive optics, binary optics, or mixed optics....http://www.google.de/patents/US5359454?utm_source=gb-gplus-sharePatent US5359454 - Apparatus for providing autostereoscopic and dynamic images
