Electrically driven varifocal micro lens fabricated by depositing parylene directly on liquid

Binh Khiem Nguyen, Eiji Iwase, Kiyoshi Matsumoto, Isao Shimoyama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

24 Citations (Scopus)

Abstract

The design and fabrication process of an electrically-driven varifocal liquid microlens are reported with experimental measurement results and a theoretical calculation model. Droplets of oil are sandwitched between a glass wafer and a thin-film of parylene chemical vapor deposited (CVD) directly onto the droplets' liquid surface. A method for creating fluid-filled micro chambers was realized with two core steps: 1) placing-shaping of oil drop-lets with hydrophobic/hydrophilic patterns and 2) coating them with a thin CVD parylene film in high vacuum condition. Liquid lenses and lens arrays of diameter from 20μm to 10mm were fabricated. In the tuning experiment, focal length was shortened to 20% of its initial value, from 3.8mm to 0.8mm. The values calculated from model match the data collected from experiments within the range of applied voltage from 0V to 150V.

Original languageEnglish
Title of host publicationProceedings - CIS Workshops 2007, 2007 International Conference on Computational Intelligence and Security Workshops, CISW 2007
Pages305-308
Number of pages4
Publication statusPublished - 2007 Dec 1
Externally publishedYes
Event20th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2007 - Kobe, Japan
Duration: 2007 Jan 212007 Jan 25

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
ISSN (Print)1084-6999

Conference

Conference20th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2007
CountryJapan
CityKobe
Period07/1/2107/1/25

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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  • Cite this

    Nguyen, B. K., Iwase, E., Matsumoto, K., & Shimoyama, I. (2007). Electrically driven varifocal micro lens fabricated by depositing parylene directly on liquid. In Proceedings - CIS Workshops 2007, 2007 International Conference on Computational Intelligence and Security Workshops, CISW 2007 (pp. 305-308). [4433059] (Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)).