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Proceedings Paper

Liquid pressure varifocus lens using a fibrous actuator
Author(s): Ryoichi Kuwano; Yasuhiro Mizutani; Tsuyoshi Tokunaga; Yukitoshi Otani
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Paper Abstract

A liquid pressure varifocus lens has been developed that employs a fibrous actuator which contracts on application of a current or on heating. The focal length of the convex lens can be varied continuously between 90 mm to 300 mm. The shape of the lens changes smoothly and the construction of the lens is extremely simply. It requires a low electric power to drive it. In this study, the optical characteristics and the response time of the liquid pressure varifocus lens were measured. The time constant of the fibrous actuator was 1.0 s for the rise time when electric power was initially supplied. A fibrous actuator having a length of 370 mm was used, and a voltage of 9.5 V was applied.

Paper Details

Date Published: 19 October 2006
PDF: 4 pages
Proc. SPIE 6374, Optomechatronic Actuators, Manipulation, and Systems Control, 63740I (19 October 2006); doi: 10.1117/12.689330
Show Author Affiliations
Ryoichi Kuwano, Fukuyama Polytechnic College (Japan)
Yasuhiro Mizutani, Tokyo Univ. of Agriculture and Technology (Japan)
Tsuyoshi Tokunaga, Chiba Institute of Technology (Japan)
Yukitoshi Otani, Tokyo Univ. of Agriculture and Technology (Japan)

Published in SPIE Proceedings Vol. 6374:
Optomechatronic Actuators, Manipulation, and Systems Control
Farrokh Janabi-Sharifi; Yukitoshi Otani, Editor(s)

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