Tunable-Focus Liquid Lens through Charge Injection

Micromachines

Shizhi Qian¹  Zhaohui Liu²  Wenxiang Shi³  Huai Zheng³ 

[1] Department of Mechanical and Aerospace Engineering, Old Dominion University, Norfolk, VA 23529, USA;School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China;

关键词: tunable focus;    liquid lens;    electrohydrodynamics;    charge injection;   

DOI  :  10.3390/mi11010109

来源: DOAJ

【 摘 要 】

Liquid lenses are the simplest and cheapest optical lenses, and various studies have been conducted to develop tunable-focus liquid lenses. In this study, a simple and easily implemented method for achieving tunable-focus liquid lenses was proposed and experimentally validated. In this method, charges induced by a corona discharge in the air were injected into dielectric liquid, resulting in “electropressure” at the interface between the air and the liquid. Through a 3D-printed U-tube structure, a tunable-focus liquid lens was fabricated and tested. Depending on the voltage, the focus of the liquid lens can be adjusted in large ranges (−∞ to −9 mm and 13.11 mm to ∞). The results will inspire various new liquid-lens applications.

【 授权许可】

Unknown