An optical film is provided which comprises a disperse phase of polymeric particles disposed within a continuous birefringent matrix. The film is oriented, typically by stretching, in one or more directions. The size and shape of the disperse phase particles, the volume fraction of the disperse phase,...http://www.google.es/patents/US6005713?utm_source=gb-gplus-sharePatente US6005713 - Multilayer polarizer having a continuous and disperse phase
Multilayer polarizer having a continuous and disperse phase
