A light controlling film is disclosed, comprising a polymerized polymer network varying spatially in a direction normal to the film surface, where the polymerized polymer network is a crosslinked high molecular weight polymeric material mixed with a low molecular weight nematic material exhibiting cholesteric...http://www.google.es/patents/US6965420?utm_source=gb-gplus-sharePatente US6965420 - Spectrum-controllable reflective polarizers having electrically-switchable modes of operation
Spectrum-controllable reflective polarizers having electrically-switchable ...
