Tunable Focus Liquid Lens with Radial-Patterned Electrode

Micromachines

Miao Xu²  Xiahui Wang²  Hongwen Ren¹ 

[1] BK Plus Haptic Polymer Composite Research Team, Department of Polymer Nano Science and Technology, Chonbuk National University, Jeonju, Jeonbuk 561-756, Korea;

关键词: adaptive optics;    liquid lens;    dielectrophoresis;    imaging;    focal length;   

DOI  :  10.3390/mi6081157

来源: mdpi

【 摘 要 】

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 V_rms. 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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.