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Micromachines 2015, 6(8), 1157-1165;

Tunable Focus Liquid Lens with Radial-Patterned Electrode

BK Plus Haptic Polymer Composite Research Team, Department of Polymer Nano Science and Technology, Chonbuk National University, Jeonju, Jeonbuk 561-756, Korea
Author to whom correspondence should be addressed.
Academic Editor: Hiroshi Toshiyoshi
Received: 3 July 2015 / Revised: 11 August 2015 / Accepted: 11 August 2015 / Published: 17 August 2015
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A dielectric liquid lens is prepared based on our previous work. By optimizing the device structure, the liquid lens presents a converging focus with good resolution and changes its focal length over a broad range with a low driving voltage. For a liquid lens with ~2.3 mm diameter in the relaxed state, it can resolve ~40 lp/mm. The resolution does not degrade during focus change. Its focal length can be varied from ~12 to ~5 mm when the applied voltage is changed from 0 to 28 Vrms. The response time of one cycle is ~2.5 s. Our liquid lens, with a low driving voltage for a large dynamic range, has potential applications in imaging, biometrics, optoelectronic, and lab-on-chip devices. View Full-Text
Keywords: adaptive optics; liquid lens; dielectrophoresis; imaging; focal length adaptive optics; liquid lens; dielectrophoresis; imaging; focal length

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Xu, M.; Wang, X.; Ren, H. Tunable Focus Liquid Lens with Radial-Patterned Electrode. Micromachines 2015, 6, 1157-1165.

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