Electrowetting-based variable-focus lens for miniature systems

被引:152
作者
Hendriks, BHW [1 ]
Kuiper, S [1 ]
Van As, MAJ [1 ]
Renders, CA [1 ]
Tukker, TW [1 ]
机构
[1] Philips Res Labs, NL-5656 AA Eindhoven, Netherlands
关键词
Camera; Electro wetting; Liquid lens; Optical recording;
D O I
10.1007/s10043-005-0255-z
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The meniscus between two immiscible liquids of different refractive indices can be used as a lens. A change in curvature of this meniscus by electrostatic control of the solid/liquid interfacial tension leads to a change in focal distance. It is demonstrated that two liquids in a tube form a self-centred variable-focus lens. The optical properties of this lens were investigated experimentally. We designed and constructed a miniature camera module based on this variable lens suitable for mobile applications. Furthermore, the liquid lens was applied in a Blu-ray Disc optical recording system to enable dual layer disc reading/writing. (c) 2005 The Optical Society of Japan.
引用
收藏
页码:255 / 259
页数:5
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