Murakami Taichi, Kuwajima Yu, Wiranata Ardi, Minaminosono Ayato, Shigemune Hiroki, Mao Zebing, Maeda Shingo
Department of Mechanical Engineering, Shibaura Institute of Technology, Tokyo 135-8548, Japan.
Department of Mechanical and Industrial Engineering, Faculty of Engineering, University of Gadjah Mada, Jalan Grafika No. 2, Yogyakarta 55281, Indonesia.
Micromachines (Basel). 2021 Nov 26;12(12):1452. doi: 10.3390/mi12121452.
Demand for variable focus lens is increasing these days due to the rapid development of smart mobile devices and drones. However, conventional mechanical systems for lenses are generally complex, cumbersome, and rigid (e.g., for motors and gears). This research proposes a simple and compact liquid lens controlled by an electro hydro dynamics (EHD) pump. In our study, we propose a do-it-yourself (DIY) method to fabricate the low-cost EHD lens. The EHD lens consists of a polypropylene (PP) sheet for the exterior, a copper sheet for the electrodes, and an acrylic elastomer for the fluidic channel where dielectric fluid and pure water are filled. We controlled the lens magnification by changing the curvature of the liquid interface between the dielectric fluid and pure water. We evaluated the magnification performance of the lens. Moreover, we also established a numerical model to characterize the lens performance. We expect to contribute to the miniaturization of focus-tunable lenses.
如今，由于智能移动设备和无人机的迅速发展，对可变焦距镜头的需求不断增加。然而，传统的镜头机械系统通常复杂、笨重且僵硬（例如电机和齿轮）。本研究提出了一种由电流体动力学（EHD）泵控制的简单紧凑的液体透镜。在我们的研究中，我们提出了一种自制（DIY）方法来制造低成本的EHD透镜。EHD透镜由用于外部的聚丙烯（PP）片、用于电极的铜片以及用于填充介电流体和纯水的流体通道的丙烯酸弹性体组成。我们通过改变介电流体和纯水之间液体界面的曲率来控制透镜放大率。我们评估了透镜的放大性能。此外，我们还建立了一个数值模型来表征透镜性能。我们期望为可聚焦调谐透镜的小型化做出贡献。
