Unlike electrowetting lens, a tunable liquid lens driven by dielectric force was demonstrated and it was analyzed its optical performance experimentally. The lens consisted of two liquids, a high dielectric liquid and a low dielectric liquid, sealed in one chamber with an iso-density. The dielectric force was induced by the difference of dielectric constants and it acted on the interface of two liquids to deform a droplet¿s profile. Such a deformation causes a lensing effect by the difference of refractive index of the two immiscible liquids.
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