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.
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Nemati et al. (2009) studied this question.
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