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Liquid crystal dynamics by ultrasound and its application to high-speed optical measurements

Research Project

Project/Area Number 19H02056
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 18040:Machine elements and tribology-related
Research InstitutionDoshisha University

Principal Investigator

Koyama Daisuke  同志社大学, 理工学部, 教授 (50401518)

Co-Investigator(Kenkyū-buntansha) 松川 真美  同志社大学, 理工学部, 教授 (60288602)
江本 顕雄  徳島大学, ポストLEDフォトニクス研究所, 特任講師 (80509662)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
Fiscal Year 2021: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2020: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
Fiscal Year 2019: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Keywords超音波 / 液晶 / レンズ / 光計測 / 手振れ補正 / 光デバイス
Outline of Research at the Start

スキャナの様な一般的な光走査型光学機器では,アクチュエータによってミラーを回転・移動させて光を走査するが,走査速度および走査範囲の限界はこの機械的性能によって決定される.本研究では,超音波によって液晶分子の配向を変化させることにより,光を空間的・時間的に高速制御する技術,およびそれを用いた高機能光音響デバイスについて検討する.第一に,超音波が液晶配向に与える影響について,その物理メカニズムを明らかにする.第二に,本技術を応用した光デバイスを開発する.第三に,本デバイスを利用して高速光計測技術へ展開する.

Outline of Final Research Achievements

In this study, we investigated a method to control the molecular orientation of liquid crystal and the application to optical measurement techniques. As the results, the relationship between the ultrasound vibration and the liquid crystal molecular orientation was evaluated quantitatively. A method to control the lens aperture and three-dimensional focusing including the radial direction of the lens were realized. Ultrasound gel lenses using a combination of ultrasound and viscoelastic transparent materials, that can control the focal point by changing its shape, were also developed.

Academic Significance and Societal Importance of the Research Achievements

カメラやスキャナの様な光学デバイスではレンズやミラーの様な光を屈折,集光,反射する光学素子を移動,回転させることによって光を時間的,空間的に制御している.今後スマートフォンなどの電子デバイスの小型・薄型化や車載用モニタリングデバイスへの応用を考えた場合,これらの機械的可動部の存在はデメリットと言える.本研究では光学素子の位置を動かすことなく,その屈折率分布を超音波と液晶を用いて高速に変化することにより,同じ光学的機能をより小型・薄型な構造で実現する手法について検討した.

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (33 results)

All 2022 2021 2020 2019 Other

All Journal Article (6 results) (of which Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (21 results) (of which Int'l Joint Research: 8 results,  Invited: 1 results) Remarks (2 results) Patent(Industrial Property Rights) (4 results) (of which Overseas: 1 results)

  • [Journal Article] Relationship between liquid crystal layer thickness and variable-focusing characteristics of an ultrasound liquid crystal lens2022

    • Author(s)
      T. Iwase, J. Onaka, A. Emoto, D. Koyama, M. Matsukawa
    • Journal Title

      Jpn. J. Appl. Phys.

      Volume: 61 Issue: SG Pages: SG1013-SG1013

    • DOI

      10.35848/1347-4065/ac48d1

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Varifocal optical lens using ultrasonic vibration and thixotropic gel2021

    • Author(s)
      D. Sakata, T. Iwase, J. Onaka, D. Koyama, M. Matsukawa
    • Journal Title

      J. Acoust. Soc. Am.

      Volume: 149 Issue: 6 Pages: 3954-3960

    • DOI

      10.1121/10.0005195

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ultrasound liquid crystal lens with a variable focus in the radial direction for image stabilization2021

    • Author(s)
      J. Onaka, T. Iwase, A. Emoto, D. Koyama, M. Matsukawa
    • Journal Title

      Appl. Opt.

      Volume: 60 Issue: 33 Pages: 10365-10371

    • DOI

      10.1364/ao.443945

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ultrasound liquid crystal lens with enlarged aperture using traveling waves2021

    • Author(s)
      J. Onaka, T. Iwase, M. Fukui, D. Koyama, M. Matsukawa
    • Journal Title

      Optics Letters

      Volume: 46 Issue: 5 Pages: 1169-1172

    • DOI

      10.1364/ol.414295

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Molecular Orientation in a Variable-Focus Liquid Crystal Lens Induced by Ultrasound Vibration2020

    • Author(s)
      Yuki Harada, Daisuke Koyama, Marina Fukui, Akira Emoto, Kentaro Nakamura, Mami Matsukawa
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1

    • DOI

      10.1038/s41598-020-62481-2

    • NAID

      120007190753

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Variable-focus optical lenses using ultrasound2019

    • Author(s)
      小山大介
    • Journal Title

      THE JOURNAL OF THE ACOUSTICAL SOCIETY OF JAPAN

      Volume: 75 Issue: 8 Pages: 460-466

    • DOI

      10.20697/jasj.75.8_460

    • NAID

      130007793462

    • ISSN
      0369-4232, 2432-2040
    • Year and Date
      2019-08-01
    • Related Report
      2019 Annual Research Report
    • Open Access
  • [Presentation] 液晶層多層化が超音波式液晶レンズの光学特性に与える影響2022

    • Author(s)
      黒田悠真, 岩瀬貴大, オナカ ジェシカ, 江本顕雄, 小山大介, 松川真美
    • Organizer
      一般社団法人レーザー学会 学術講演会第42回年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 超音波振動によるシリコーンゲルレンズの径方向形状制御2022

    • Author(s)
      橋本隼佑, 中村光佑, 小山大介
    • Organizer
      日本音響学会2022年春季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 超音波振動を用いた凹凸両面シリコーンゲルレンズの開発2021

    • Author(s)
      橋本隼佑, 岩瀬貴大,小山大介, 松川真美
    • Organizer
      電子情報通信学会 超音波研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Ultrasound liquid crystal lens based on multichannel transducer for image stabilization2021

    • Author(s)
      Jessica Onaka, Takahiro Iwase, Daisuke Koyama, Mami Matsukawa
    • Organizer
      日本音響学会2021年秋季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 超音波振動下における液晶レンズ内部の液晶配向の測定2021

    • Author(s)
      岩瀬貴大,ジェシカオナカ,江本顕雄, 小山大介,松川真美
    • Organizer
      日本音響学会2021年秋季研究発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 液晶層厚みが超音波式液晶レンズの光学特性に与える影響2021

    • Author(s)
      岩瀬貴大,ジェシカオナカ, 小山大介,松川真美
    • Organizer
      第42回超音波エレクトロニクスの基礎と応用に関するシンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] Evaluation of the Optical Characteristics of the Liquid Crystal Lens Using a Shack-Hartmann Wavefront Sensor2021

    • Author(s)
      J. Onaka, T. Iwase, D. Koyama, M. Matsukawa
    • Organizer
      IEEE International Ultrasonics Symposium 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ultrasound Liquid Crystal Lens with Radial Focal Displacement2021

    • Author(s)
      J. Onaka, T. Iwase, D. Koyama, M. Matsukawa
    • Organizer
      IEEE International Ultrasonics Symposium 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Measurement of the Orientational Angle of Liquid Crystal Molecules Induced by Ultrasound Vibration2021

    • Author(s)
      T. Iwase, J. Onaka, D. Koyama, A. Emoto, M. Matsukawa
    • Organizer
      IEEE International Ultrasonics Symposium 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Expansion of ultrasonically controlled liquid crystal lens aperture using traveling wave2021

    • Author(s)
      Jessica Onaka, Takahiro Iwase, Marina Fukui, Daisuke Koyama, Mami Matsukawa
    • Organizer
      電子情報通信学会 超音波研究会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Concave liquid crystal lens with a large aperture using ultrasound traveling wave2020

    • Author(s)
      T. Iwase, J. Onaka, D. Koyama, A. Emoto, K. Nakamura, M. Matsukawa
    • Organizer
      IEEE International Ultrasonics Symposium 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Variable-focus in radial direction in liquid crystal lens using ultrasound vibration2020

    • Author(s)
      J. Onaka, T. Iwase, D. Koyama
    • Organizer
      IEEE International Ultrasonics Symposium 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] チキソトロピーゲルを用いた超音波式可変焦点レンズの光学特性2020

    • Author(s)
      坂田大昂, 岩瀬貴大, 小山大介, 松川真美,
    • Organizer
      第41回超音波エレクトロニクスの基礎と応用に関するシンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] 超音波型液晶レンズの透過光特性評価2020

    • Author(s)
      福井鞠奈, 小山大介, 原田裕生, 江本顕雄, 中村健太郎, 松川真美
    • Organizer
      電子情報通信学会 超音波研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 超音波液晶レンズの形状が光学特性に与える影響2020

    • Author(s)
      岩瀬貴大, 原田裕生, 福井鞠奈, 小山大介
    • Organizer
      日本音響学会2020年春季研究発表会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Evaluation of liquid crystal molecular orientation in an ultrasound liquid crystal lens2019

    • Author(s)
      Y. Harada, M. Fukui, D. Koyama, M. Matsukawa, K. Nakamura
    • Organizer
      2019 International Congress on Ultrasonics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of physical properties of liquid crystal materials on ultrasound variable-focus lenses2019

    • Author(s)
      M. Fukui, Y. Harada, D. Koyama, K. Nakamura, M. Matsukawa
    • Organizer
      2019 International Congress on Ultrasonics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of liquid crystal orientation in an ultrasound large-aperture liquid crystal lens2019

    • Author(s)
      Y. Harada, M. Fukui, A. Emoto, D. Koyama, M. Matsukawa
    • Organizer
      IEEE International Ultrasonics Symposium 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ultrasound variable-focus liquid crystal lens2019

    • Author(s)
      小山大介
    • Organizer
      19-2 フォトニクスポリマー研究会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Variable-focus in radial direction in liquid crystal lens using acoustic radiation force2019

    • Author(s)
      Jessica Onaka, Yuki Harada, Marina Fukui, Daisuke Koyama, Mami Matsukawa
    • Organizer
      第40回超音波エレクトロニクスの基礎と応用に関するシンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] 超音波を用いた大口径液晶レンズの分子配向評価2019

    • Author(s)
      原田裕生, 福井鞠奈, 小山大介, 江本顕雄, 松川真美
    • Organizer
      第40回超音波エレクトロニクスの基礎と応用に関するシンポジウム
    • Related Report
      2019 Annual Research Report
  • [Remarks] 同志社大学理工学部超音波エレクトロニクス・応用計測研究室

    • URL

      https://use.doshisha.ac.jp/

    • Related Report
      2021 Annual Research Report
  • [Remarks] 同志社大学理工学部超音波エレクトロニクス・応用計測研究室

    • URL

      https://use.doshisha.ac.jp

    • Related Report
      2020 Annual Research Report
  • [Patent(Industrial Property Rights)] レンズ装置およびレンズ制御方法2022

    • Inventor(s)
      小山大介, 橋本隼佑
    • Industrial Property Rights Holder
      同志社大学
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2022-022334
    • Filing Date
      2022
    • Related Report
      2021 Annual Research Report
  • [Patent(Industrial Property Rights)] 超音波式液晶レンズおよび超音波式液晶レンズの制御方法2021

    • Inventor(s)
      小山大介, ジェシカミエコジアスオナカ
    • Industrial Property Rights Holder
      同志社大学
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2021-011098
    • Filing Date
      2021
    • Related Report
      2020 Annual Research Report
  • [Patent(Industrial Property Rights)] 可変焦点ゲルレンズおよび可変焦点ゲルレンズの制御方法2021

    • Inventor(s)
      小山大介, 坂田大昂
    • Industrial Property Rights Holder
      同志社大学
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2021-011097
    • Filing Date
      2021
    • Related Report
      2020 Annual Research Report
  • [Patent(Industrial Property Rights)] Liquid-Crystal Varifocal Lens and Focal Length Control Method2019

    • Inventor(s)
      Daisuke Koyama, Yuki Shimizu
    • Industrial Property Rights Holder
      Doshisha University
    • Industrial Property Rights Type
      特許
    • Filing Date
      2019
    • Acquisition Date
      2019
    • Related Report
      2019 Annual Research Report
    • Overseas

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Published: 2019-04-18   Modified: 2023-01-30  

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