Biomimetic gel-type single lens system with new attachment and driving mechanism

This paper proposes a biomimetic gel-type single lens system with a new attachment and driving mechanism. As the miniaturization of conventional lens systems is limited due to the use of a set of glass lenses for adjusting the focal length, a gel-type single lens system is presented based on the focus adjustment mechanism of the human eye. The proposed system consists of a gel-type lens, mechanical part, and winding-type SMA actuator. In addition, the proposed system is designed to operate with a simple and miniaturized mechanical structure using a new attachment and driving mechanism. The focusing performance of the proposed system is verified through a series of experiments.