MULTILAYER OPTICAL FILMS HAVING SIDE-BY-SIDE POLARIZER/POLARIZER ZONES
摘要
A reflective film includes interior layers that selectively reflect light by constructive or destructive interference, the layers extending from a first to a second zone of the film. In the first zone the layers provide a first reflective polarizer characteristic, and in a second zone the layers provide a substantially different reflective polarizer characteristic. The second zone is characterized by at least some of the layers having a reduced birefringence relative to their birefringence in the first zone. In some cases the first reflective polarizer characteristic may have a pass axis that is substantially orthogonal to that of the second reflective polarizer characteristic. The film may have substantially the same thickness in the first and second zones, or a substantially reduced thickness in the second zone relative to the first zone.
申请公布号
WO2010075383(A1)
申请公布日期
2010.07.01
申请号
WO2009US69192
申请日期
2009.12.22
申请人
3M INNOVATIVE PROPERTIES COMPANY;MERRILL, WILLIAM, WARD;DUNN, DOUGLAS, S.