A group of researchers based at Centre National de la Recherche Scientifique in Toulouse, France, have developed a fabrication technique for microlenses using a cholesteric liquid crystal (LC) [1,2]. Microlenses are increasingly used for many applications. They have been used for focusing to increase detector efficiency; are widely used in lab-on-a-chip optical devices; and are an integral component of a plenoptic camera, which creates pictures that can be refocused after they are taken.
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