Invention Grant
US09239504B2 Switchable Fresnel lens and fabrication method thereof 有权
可切换菲涅耳透镜及其制造方法

Switchable Fresnel lens and fabrication method thereof
Abstract:
A switchable Fresnel lens and a fabrication method thereof are disclosed. The switchable Fresnel lens comprises: an upper plate having a first electrode; a lower plate having a second electrode; and a lens cell comprising a liquid crystal layer sealed between the upper plate and the lower plate. The lens cell comprises a Fresnel lens formed by an electric field applied through the first and second electrodes, and having a discontinuous boundary. The lens cell comprises barrier ribs that are vertically formed between the upper plate and the lower plate at the discontinuous boundary of the Fresnel lens.
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