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Proceedings Paper

Theoretical analysis for double-liquid variable focus lens
Author(s): Runling Peng; Jiabi Chen; Songlin Zhuang
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Paper Abstract

In this paper, various structures for double-liquid variable focus lens are introduced. And based on an energy minimization method, explicit calculations and detailed analyses upon an extended Young-type equation are given for double-liquid lenses with cylindrical electrode. Such an equation is especially applicable to liquid-liquid-solid tri-phase systems. It is a little different from the traditional Young equation that was derived according to vapor-liquid-solid triphase systems. The electrowetting effect caused by an external voltage changes the interface shape between two liquids as well as the focal length of the lens. Based on the extended Young-type equation, the relationship between the focal length and the external voltage can also be derived. Corresponding equations and simulation results are presented.

Paper Details

Date Published: 17 September 2007
PDF: 8 pages
Proc. SPIE 6666, Optical Materials and Structures Technologies III, 666612 (17 September 2007); doi: 10.1117/12.731208
Show Author Affiliations
Runling Peng, Univ. of Shanghai for Science and Technology (China)
Jiabi Chen, Univ. of Shanghai for Science and Technology (China)
Songlin Zhuang, Univ. of Shanghai for Science and Technology (China)


Published in SPIE Proceedings Vol. 6666:
Optical Materials and Structures Technologies III
William A. Goodman; Joseph L. Robichaud, Editor(s)

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