Challenges of using dielectric elastomer actuators to tune liquid lens

Gih Keong Lau, Thanh Giang La, Li Lynn Shiau, Adrian Wei Yee Tan

研究成果: Conference contribution同行評審

5 引文 斯高帕斯(Scopus)

摘要

Recently, dielectric elastomer actuators (DEAs) have been adopted to tune liquid membrane lens, just like ciliary muscles do to the lens in human eye. However, it faces some challenges, such as high stress, membrane puncture, high driving voltage requirement, and limited focus distance (not more than 707cm), that limit its practical use. The design problem gets more complex as the liquid lens shares the same elastomeric membrane as the DEA. To address these challenges, we separate DEA from the lens membrane. Instead, a liquid-immersed DEA, which is safe from terminal failure, is used as a diaphragm pump to inflate or deflate the liquid lens by hydraulic pressure. This opens up the possibility that the DEA can be thinned down and stacked up to reduce the driving voltage, independent of the lens membrane thickness. Preliminary study showed that our 8-mm-diameter tunable lens can focus objects in the range of 15cm to 50cm with a small driving voltage of 1.8kV. Further miniaturization of DEA could achieve a driving voltage less than 1kV.

原文English
主出版物標題Electroactive Polymer Actuators and Devices, EAPAD 2014
發行者SPIE
ISBN(列印)9780819499820
DOIs
出版狀態Published - 1 一月 2014
事件Electroactive Polymer Actuators and Devices, EAPAD 2014 - San Diego, CA, United States
持續時間: 10 三月 201413 三月 2014

出版系列

名字Proceedings of SPIE - The International Society for Optical Engineering
9056
ISSN(列印)0277-786X
ISSN(電子)1996-756X

Conference

ConferenceElectroactive Polymer Actuators and Devices, EAPAD 2014
國家United States
城市San Diego, CA
期間10/03/1413/03/14

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