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Switchable liquid crystal fresnel lens

机译:可切换液晶菲涅尔透镜

摘要

A liquid crystal Fresnel lens is provided. The liquid crystal Fresnel lens includes a liquid crystal cell and two polarizers. The liquid crystal cell includes: two transparent substrates having conducting layers disposed thereon with alignment layers, wherein an alignment pattern formed by the alignment layers are configured to provide multiple alignment domains in a Fresnel zones pattern, and wherein an easy axis of adjacent alignment domains are oriented at an angle relative to one another; and a ferroelectric liquid crystal layer disposed between the two transparent substrates, wherein the ferroelectric liquid crystal layer has a planar surface orientation and smectic layers perpendicular to the two transparent substrates. The liquid crystal cell is disposed between the two polarizers.
机译:提供了液晶菲涅耳透镜。液晶菲涅耳透镜包括液晶单元和两个偏振器。液晶单元包括:两个透明基板,其上具有设置有取向层的导电层,其中由取向层形成的取向图案被配置为在菲涅耳带图案中提供多个取向畴,并且其中相邻取向畴的易轴为相对于彼此成角度地定向;设置在两个透明基板之间的铁电液晶层,其中铁电液晶层具有平坦的表面取向和垂直于两个透明基板的近晶层。液晶单元设置在两个偏振器之间。

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