OPTICAL FILMS HAVING AT LEAST ONE PARTICLE-CONTAINING LAYER

摘要

An optical film (100) includes a reflective polarizing element (102) and a surface layer (104). The reflective polarizing element substantially reflects light having a first polarization state and substantially transmits a second polarization state. The surface layer is disposed on the reflective polarizing element and in a same optical path as the reflective polarizing element. The surface layer is configured and arranged to transmit light and includes a plurality of particles (106) that roughen an exterior surface of the surface layer in order to avoid clogging of the sheet and interference color rings. Preferably, using the optical film in an optical device does not substantially reduce the gain advantage of the optical device when compared with an optical device utilizing the same optical film without particles in the surface layer. Also described are optical devices using the optical film and methods of making and using the optical films.