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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
Micromachines 2015, 6(8), 1157-1165;
Received: 3 July 2015 / Revised: 11 August 2015 / Accepted: 11 August 2015 / Published: 17 August 2015
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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Xu, M.; Wang, X.; Ren, H. Tunable Focus Liquid Lens with Radial-Patterned Electrode. Micromachines 2015, 6, 1157-1165.

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