期刊
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS
卷 8, 期 7, 页码 S330-S336出版社
IOP PUBLISHING LTD
DOI: 10.1088/1464-4258/8/7/S06
关键词
electro-wetting; liquid lens; micro-lens; variable lens; optical fluids; micro-opto-electro-mechanical systems; silicon technology; centring structure
类别
We present a tunable liquid micro-lens system exhibiting a tuning range of back focal length between 2.3 mm and infinity achieved by applying a voltage of 0-45 V. The lens actuation mechanism is based on electro-wetting on dielectrics (EWOD) and the system is fabricated in MEMS technology. In this system, two density-matched optical fluids are located in a centring structure which was defined by an anisotropic etching process. The system design provides an initial back focal length of a few millimetres and is robust against shocks and vibrations.
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