Self-deformable Varifocal Lens Based on Electroactive Gel

摘要

There is ongoing uncertainty about the best way to mitigate the complication strategy in the development of varifocallenses. Many efforts are being focused on the fabrication of adaptive focus lenses by a simple technique. Since theadaptive focus lenses change its curvature in response to the applied voltage; there has been a multitude of research isactively under progress. In this paper, we propose a compliant, highly transparent, and electroactive polymers based selfdeformablemicrolens for smart optical devices. Especially, a non-ionic PVC gel among electroactive polymers wasselected to develop self-deformable microlens to avoid the solvent leakage because its actuation mechanism is not basedon solvent-drag deformation but on creep deformation in an electric field, unlike ionic gel electrolytes. To make theconvex shape on an actuation area of the proposed module, we put a rigid annular electrode on the electroactive PVC geland apply pressure input by the rigid annular electrode. Later, we measure the focal length variations of the proposedvarifocal lens with various thicknesses of electroactive gels. The resulting focal length values, obtained for the proposedmodule being large enough to use in small and compact optic devices.