Post-formable multilayer optical films and methods of forming

Details Post-formable multilayer optical films and methods of forming Post-formable multilayer optical films and methods of forming

G - Physics

02

B

G02B 5/30 (2006.01) G02B 1/10 (2006.01) G02B 5/08 (2006.01)

Patent

CA 2338348

Articles including post-formed multilayer optical films with layers of at least one strain-induced birefringent material, methods of manufacturing such articles by post-forming multilayer optical films, and multilayer optical films that are particulary well-suited to post-forming operations are disclosed. The articles, methods and multilayer optical films of the present invention allow for post-forming of multilayer optical films including strain- induced index of refraction differentials while retaining the desired optical properties of the multilayer optical films.

L'invention concerne des articles composés de films optiques à plusieurs couches dont certaines au moins sont constituées d'un matériau biréfringent résistant aux contraintes. L'invention traite aussi de procédés de fabrication de ces articles par post-formage de films optiques à plusieurs couches, et de films optiques à plusieurs couches qui sont particulièrement adaptés pour des opérations de post-formage. Les articles, les procédés et les films optiques à plusieurs couches selon l'invention permettent d'effectuer le post-formage de films optiques à plusieurs couches y compris des différentiels d'indices de réfraction avec une résistance aux contraintes tout en maintenant les propriétés optiques requises des films optiques à plusieurs couches.

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