Patent ID: 6369868
Filing Date: 2002-04-09
Classification: B82Y,E06B,G02F

Abstract:
An apparatus comprising a light controlling film, the film having a first surface and a second surface, comprising:a polymerized polymer network, comprising: a crosslinked high molecular weight polymeric material; and a low molecular weight cholesteric liquid crystal (CLC) material, wherein the high molecular weight and the low molecular weight form a material having cholesteric liquid crystal (CLC) order, the CLC order oriented with respect to the first and the second surfaces, and wherein light having a first polarization and a first bandwidth incident on the first surface is substantially reflected from the film, and wherein light having a second polarization and the first bandwidth incident on the first surface is not substantially reflected from the film, and wherein an electric field impressed in the film substantially changes the first bandwidth of reflection of light having the first polarization.