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Tunable Lens Driven by Electrohydrodynamic Pumping
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DOI：10.1002/adem.202400898.png)
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Abstract
En 中文
Developing soft actuators has emerged as one of the most promising areas in robotics, with a growing demand for tunable lenses driven by the rapid advancements in intelligent mobile devices and cameras. Traditional mechanical lens systems are characterized by their heaviness, complexity, and rigidity. To address these limitations, this research introduces a novel approach: a dual-chamber liquid lens actuated by an electrohydrodynamic (EHD) pump. The study involves the fabrication of a planar EHD pump, with an experimental investigation into the impact of electrode gap, electrode width, and electrode-pair gap on the pump's pressure. Following the optimization of the EHD pump, a dual-chamber lens is constructed, comprising two chambers, a rigid transparent plate, and two prestretched elastic membranes, which are connected to the EHD pump via tubes. Additionally, a mathematical model is developed to predict the focal length of the lens. Both experimental and theoretical analyses are conducted to explore the effects of the prestretch ratio of the elastic membranes and the radius ratio of the two chambers on focal length variation. The theoretical predictions of the focal length-voltage curves align closely with the experimental findings, providing validation for the proposed theoretical model. This research introduces a novel approach: a dual-chamber liquid lens actuated by an electrohydrodynamic (EHD) pump. The study involves the fabrication and optimization of the EHD pump. A dual-chamber liquid lens is manufactured and integrated with the EHD pump via tubes. This silent, cost-effective, and easily producible lens holds great promise for applications in various optical fields.image (c) 2024 WILEY-VCH GmbH
Keywords:
electrohydrodynamics
focal lengths
inhomogeneous deformations
tunable lenses
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