Abstract
In this paper, a FOV (field of view) adjustable liquid lens driven by electrowetting effect is demonstrated. The proposed lens consists of a window glass, a bottom electrode, four sidewall electrodes, two supporting shafts, and a deflectable aperture. The deflectable aperture is nested on the supporting shafts between the two liquids to limit the position of the liquid-liquid (L-L) interface. Different from the conventional FOV adjustable liquid lenses, the proposed lens can realize focal length adjustment and FOV deflection by applying voltages to the four sidewall electrodes, which has a simple structure and a miniaturized drive. The experiment shows that the aperture of the lens is 9 mm, the optical power range is -21 m-1 to -7 m-1 and the tilt angle of the L-L surface is ∼ 18° (± 9°). With a compact structure and easy drive, the proposed lens has great potential for applications in scanning, imaging, and inspection.
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