An optical film

Details An optical film An optical film

G - Physics

02

B

G02B 5/30 (2006.01)

Patent

CA 2248214

An optical film is provided which comprises a disperse phase of polymeric particles disposed within a continuous birefringent matrix. The film is oriented, typically by stretching, in one or more directions. The size and shape of the disperse phase particles, the volume fraction of the disperse phase, the film thickness, and the amount of orientation are chosen to attain a desired degree of diffuse reflection and total transmission of electromagnetic radiation of a desired wavelength in the resulting film.

L'invention concerne un film optique qui comprend une phase de particules polymères dispersées dans une matrice biréfringente continue. Le film est orienté, généralement par étirage, dans une ou plusieurs directions. La taille et la forme des particules de la phase dispersée, la fraction volumique de la phase dispersée, l'épaisseur du film et le degré d'orientation sont choisis pour que le film obtenu présente, à la longueur d'onde choisie pour les radiations électromagnétiques, les niveaux souhaités de réflexion diffuse et de transmission totale.

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