Potentials of Galilean and Keplerian Liquid Crystal Zoom Lens System

Sota Shimizu, Haruka Hirai, Marenori Kawamura, Susumu Sato

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

1 Citation (Scopus)

Abstract

This paper focuses on a non-mechanical zoom lens system using Liquid Crystal (LC). The LC lens cell is well known as an optical device of which the focal length can change nonmechanically as a lens by small electric power. The authors apply the two LC lens cells for composing the zoom lens system in which the magnification can change continuously in this paper. As two representative types of the telescopic lens, the Keplerian and the Galilean are famous. The former combines two convex lenses, while the latter combines a convex lens and a concave lens. The range of the focal length of which the LC lens cell can change is definite. It depends on the lens power, which is defined as an inverted value of the focal length. In this study, potential performances of the magnification range as the zoom lens, from the minimum to the maximum, have been estimated by simulation, comparing between the Keplerian and Galilean types. In addition, requirements of the lens power of the LC lens has been estimated. The authors have also discussed their smallest realizable size of the LC zoom lens system from the above simulation results.

Original languageEnglish
Title of host publicationProceedings - 2018 12th France-Japan and 10th Europe-Asia Congress on Mechatronics, Mecatronics 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages308-311
Number of pages4
ISBN (Electronic)9781538629826
DOIs
Publication statusPublished - 2018 Oct 17
Event12th France-Japan and 10th Europe-Asia Congress on Mechatronics, Mecatronics 2018 - Tsu, Japan
Duration: 2018 Sep 102018 Sep 12

Other

Other12th France-Japan and 10th Europe-Asia Congress on Mechatronics, Mecatronics 2018
CountryJapan
CityTsu
Period18/9/1018/9/12

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Keywords

  • Galilean
  • Keplerian
  • liquid crystal zoom lens
  • non-mechanical zoom lens
  • potential performance
  • the smallest size

ASJC Scopus subject areas

  • Human-Computer Interaction
  • Signal Processing
  • Mechanical Engineering
  • Artificial Intelligence
  • Modelling and Simulation
  • Orthopedics and Sports Medicine
  • Control and Optimization
  • Rehabilitation

Cite this

Shimizu, S., Hirai, H., Kawamura, M., & Sato, S. (2018). Potentials of Galilean and Keplerian Liquid Crystal Zoom Lens System. In Proceedings - 2018 12th France-Japan and 10th Europe-Asia Congress on Mechatronics, Mecatronics 2018 (pp. 308-311). [8495813] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MECATRONICS.2018.8495813