alexa An electrically tunable-focusing liquid crystal lens with a low voltage and simple electrodes.
Engineering

Engineering

Journal of Electrical & Electronic Systems

Author(s): Lin HC, Lin YH

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Abstract An electrically tunable focusing LC lens with a low voltage and simple planar electrodes is demonstrated. The inhomogeneous electric field of the LC lens without any hole-patterned-electrode is generated by using an embedded polymeric layer with a gradient distribution of dielectric constants (or relative permittivity). LC directors in the LC layer experience spatially inhomogeneous voltages even though a single voltage is applied to the planar electrodes. Such a LC lens has a low voltage (~2.6 V(rms)) and simple design of electrodes. The gradient distribution of dielectric constants of polymeric layer is discussed and the performance of the LC lens is investigated. The applications of such a LC lens are cell phones, webcam, and pico projectors.
This article was published in Opt Express and referenced in Journal of Electrical & Electronic Systems

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