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Abstract

A tunable-shape prism comprises: a fluid chamber including a first fluid and a second fluid. The first fluid is electrically conducted and the second fluid is electrically insulated. The first fluid and the second fluid have different refractive indexes and the first fluid and the second fluid are non-miscible to each other. A meniscus is formed between the first fluid and the second fluid. A plurality of first electrodes are contacted with the first fluid and a plurality of second electrodes are even-annularly arranged around the first and the second fluids. The plurality of the second electrodes are coated by an insulator; and the plurality of the second electrodes and the corresponding first electrode together constitute a plurality of electrode pairs. The surface tension of the second fluid can be controlled by a plurality of voltages correspondingly applied to the plurality of electrode pairs, which results in that the shape of the meniscus can be controlled by the plurality of voltages correspondingly applied to the plurality of electrode pairs.

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First Claim