DICHROIC POLARIZING FILM AND OPTICAL DEVICE CONTAINING THE FILM

摘要

A polarizing film is made, for example, by a method comprising forming a polymeric film on a substrate, the polymeric film comprising polyvinyl alcohol and a water-soluble or water-dispersible second polymer in a ratio of polyvinyl alcohol:second polymer in the range of 5:1 to 100:1 by weight; orienting the polymeric film while disposed on the substrate; incorporating dichroic dye material into the polymeric film; and removing the polymeric film from the substrate. The film incorporates a dichroic dye material, such as iodine, to form a polarizer. This polarizer may be used in an optical device.