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http://dx.doi.org/10.5302/J.ICROS.2010.16.11.1082

New Gel-type Biomimetic Variable-focus Lens System  

Seo, Jeong-Ho (Kyungpook National University)
Son, Hyung-Min (Kyungpook National University)
Lee, Yun-Jung (Kyungpook National University)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.16, no.11, 2010 , pp. 1082-1088 More about this Journal
Abstract
In this paper, we propose a new gel-type biomimetic variable-focus lens system. The miniaturization of conventional lens system is limited due to the use of a set of glass lenses for adjusting the focal length. Biologically inspired by the focus adjustment mechanism of the human eye, a gel-type single lens system with variable-focus is presented. The proposed system consists of a gel-type lens, mechanical parts such as body, rotation ring, 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 and measurements of the shape of the lens using tomography.
Keywords
lens; biomimetic; variable focus; SMA; gel-type;
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