A diy fabrication approach for ultra‐thin focus‐tunable liquid lens using electrohydrodynamic pump

Taichi Murakami, Yu Kuwajima, Ardi Wiranata, Ayato Minaminosono, Hiroki Shigemune, Zebing Mao, Shingo Maeda

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

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 gener-ally 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 miniaturiza-tion of focus‐tunable lenses.

Original languageEnglish
Article number1452
JournalMicromachines
Volume12
Issue number12
DOIs
Publication statusPublished - 2021 Dec

Keywords

  • EHD pump
  • Electro hydro dynamics
  • Lens
  • Soft actuator

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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