SHAPED OPTICAL FILMS AND METHODS OF SHAPING OPTICAL FILMS

An optical film includes a plurality of polymeric layers shaped along orthogonal first and second directions. 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 an...

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Bibliographische Detailangaben
Hauptverfasser: Aastuen, David J.W, Kotz, Arthur L, Jennings, Robert M, Etter, Jo A, Fay, William T
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:An optical film includes a plurality of polymeric layers shaped along orthogonal first and second directions. 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 where the optical film has a maximum projected area in the reference plane. 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. Reflectance and transmittance of the optical film are described.