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Open AccessArticle

Ultrathin Tunable Lens Based on Boundary Tension Effect

School of optics and photonics, Beijing Institute of Technology, Key Laboratory of Biomimetic Robots and Systems, Ministry of Education, Beijing 100081, China
Authors to whom correspondence should be addressed.
Sensors 2019, 19(18), 4018;
Received: 11 August 2019 / Revised: 9 September 2019 / Accepted: 12 September 2019 / Published: 18 September 2019
(This article belongs to the Special Issue Integrated Photonics for Novel Sensing and Measurement Applications)
Solid and liquid lenses are commonly used in optical design. Such lenses have suitable thicknesses due to their working principle and processing mode. Thus, zoom optical systems comprising solid and liquid lenses are extremely large. This work presents a new ultrathin tunable lens (UTL) comprising two liquid film lenses (LFLs) obtained through aspheric deformation and produced from the surface of a micro-liquid under gravity and boundary tension. The UTL can flexibly change focal lengths between positive and negative lenses when the device thickness is merely 2.15 mm. The proposed lens has the advantages of small volume, light weight, simple fabrication, and independence from external force during zooming. This research makes up for the drawback that traditional solid and liquid lenses cannot further reduce their thicknesses. The proposed UTL provides a new lens form and fabrication method, and can be used to replace solid and liquid lenses for designing miniature zoom optical systems. View Full-Text
Keywords: ultrathin tunable lens; boundary tension effect; optical imaging ultrathin tunable lens; boundary tension effect; optical imaging
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MDPI and ACS Style

Yang, A.; Cao, J.; Zhang, F.; Cheng, Y.; Hao, Q. Ultrathin Tunable Lens Based on Boundary Tension Effect. Sensors 2019, 19, 4018.

AMA Style

Yang A, Cao J, Zhang F, Cheng Y, Hao Q. Ultrathin Tunable Lens Based on Boundary Tension Effect. Sensors. 2019; 19(18):4018.

Chicago/Turabian Style

Yang, Ao; Cao, Jie; Zhang, Fanghua; Cheng, Yang; Hao, Qun. 2019. "Ultrathin Tunable Lens Based on Boundary Tension Effect" Sensors 19, no. 18: 4018.

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