A simple holographic technic for fabricating a LC/polymer switchable Fresnel lens

摘要

In this article, we report on a novel technique for fabricating an electrically switchable Fresnel lens made from liquid-crystal-polymer composite. The Fresnel pattern is formed by means of interference between two planar and spherical wavefronts reflected from a single plano-convex lens. The simplicity of the procedure and capability to fabricate different focal lengths with the same arrangement are the unique advantages of this technique. Copyright