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Fabrication and characterization of variable-focus liquid lens based on coil
- Source :
- AIP Advances. 12:035101
- Publication Year :
- 2022
- Publisher :
- AIP Publishing, 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 :
- General Physics and Astronomy
Subjects
Details
- ISSN :
- 21583226
- Volume :
- 12
- Database :
- OpenAIRE
- Journal :
- AIP Advances
- Accession number :
- edsair.doi...........b492a4347b05bd9e5566ed089bf058ef