发明授权
US09291757B2 Multilayer optical films having side-by-side polarizer/polarizer zones
有权
具有并排偏振器/偏振器区域的多层光学膜
- 专利标题: Multilayer optical films having side-by-side polarizer/polarizer zones
- 专利标题(中): 具有并排偏振器/偏振器区域的多层光学膜
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申请号: US13139866申请日: 2009-12-22
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公开(公告)号: US09291757B2公开(公告)日: 2016-03-22
- 发明人: William Ward Merrill , Douglas S. Dunn
- 申请人: William Ward Merrill , Douglas S. Dunn
- 申请人地址: US MN St. Paul
- 专利权人: 3M Innovative Properties Company
- 当前专利权人: 3M Innovative Properties Company
- 当前专利权人地址: US MN St. Paul
- 代理商 Yufeng Dong
- 国际申请: PCT/US2009/069192 WO 20091222
- 国际公布: WO2010/075383 WO 20100701
- 主分类号: G02B5/30
- IPC分类号: G02B5/30 ; G02B5/28 ; G02B5/08 ; G02B27/28
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.
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