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Fabrication and characterization of variable-focus liquid lens based on coil

Authors :
Tao Chen
Tianxin Ding
Jingyi Sun
Yue Chen
Peitao Zheng
Qirui Chen
Zhongcheng Liang
Meimei Kong
Lingling Deng
Source :
AIP Advances, Vol 12, Iss 3, Pp 035101-035101-5 (2022)
Publication Year :
2022
Publisher :
AIP Publishing LLC, 2022.

Abstract

This paper presents a coil-based liquid lens (CLL) with a mature and simple fabrication process. A tunable focal length is achieved by changing the liquid–liquid interface curvature using electrowetting on dielectric (EWOD). The lens cavity is a coil wound or stacked by a particular structure named EWOD wire, which is made by coating a soft insulating dielectric layer on a flexible conductive core. As a result, requirements for different lens designs can be achieved, and coating an insulating dielectric layer in complex cavities is not required. The optical performance of the CLL is measured with a clear aperture of 8 mm, which shows that the tunable range for the focal length is (−∞, −35 mm] ∪ [78 mm, +∞) at a voltage of 0–235 V, and the response time is less than 40 ms.

Subjects

Subjects :
Physics
QC1-999

Details

Language :
English
ISSN :
21583226
Volume :
12
Issue :
3
Database :
Directory of Open Access Journals
Journal :
AIP Advances
Publication Type :
Academic Journal
Accession number :
edsdoj.f5294664da4441f18e5e54418a376ad1
Document Type :
article
Full Text :
https://doi.org/10.1063/5.0082436