CPC B32B 1/00 (2013.01) [B29C 51/428 (2013.01); B29D 11/0073 (2013.01); B29D 11/00644 (2013.01); B29D 11/00932 (2013.01); B32B 2307/416 (2013.01)] | 20 Claims |
1. A curved optical film comprising a plurality of polymeric layers shaped along orthogonal first and second directions such that:
a first curve being an intersection of the optical film with a first plane orthogonal to the second direction and to a reference plane has a best-fit first circular arc subtending a first angle at a center of curvature of the first circular arc of greater than 180 degrees, the optical film having a maximum projected area in the reference plane; and
a second curve being an intersection of the optical film with a second plane orthogonal to the first direction and to the reference plane has a best-fit second circular arc subtending a second angle at a center of curvature of the second circular arc of at least 30 degrees,
wherein each location across at least 90% of a total area of the optical film has a reflectance greater than about 80% and a transmittance less than about 2% for normally incident light having a same predetermined wavelength and a same first polarization state.
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