A variable-focus cylindrical liquid lens array based on two transparent liquids of different refractive index is
demonstrated. An elastic membrane divides a transparent reservoir into two chambers. The two chambers are filled with
liquid 1 and liquid 2, respectively, which are of different refractive index. The micro-clapboards help liquid 1, liquid 2
and the elastic membrane form a cylindrical lens array. Driving these two liquids to flow can change the shape of the
elastic membrane as well as the focal length. In this design, the gravity effect of liquid can be overcome. A demo lens
array of positive optical power is developed and tested. Moreover, a potential application of the proposed lens array for
autostereoscopic 3D displays is emphasized.
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