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Micro high-speed optical devices using the refractive index change induced by ultrasound

Research Project

Project/Area Number 23K22662
Project/Area Number (Other) 22H01391 (2022-2023)
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeMulti-year Fund (2024)
Single-year Grants (2022-2023)
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) 江本 顕雄  徳島大学, ポストLEDフォトニクス研究所, 特任准教授 (80509662)
石河 睦生  桐蔭横浜大学, 医用工学部, 講師 (90451864)
Project Period (FY) 2024-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000)
Fiscal Year 2024: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2023: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
Fiscal Year 2022: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Keywords超音波 / 光デバイス / 光計測 / レンズ / スキャナ / 液晶
Outline of Research at the Start

一般的な光走査デバイスでは,ミラーを回転させて光を走査するが,走査速度と範囲の限界はこの機械的特性によって決定される.一方で,光路の媒質中に音波が伝搬すると,圧力変動に伴う屈折率変化が生じ,入射光は屈折・回折する.本研究では,超音波によって光路中の屈折率分布を高速に変化させ,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を検討する.第一に,超音波の放射力によって液晶配向と屈折率を静的に高速制御する技術を利用した光デバイスを開発する.第二に,超音波による周期的な媒質の屈折率変化を利用した光デバイスを開発する.第三にこれらのデバイスを用いた高速光計測技術へ展開する.

Outline of Final Research Achievements

In this study, we investigated a technique for high-speed spatial and temporal control of light by changing the refractive index distribution of a medium in the optical path at high speed and large amplitude using ultrasound waves. First, we found that high-frequency and high-intensity ultrasound waves in the 100 MHz range induce a localized, static, and large refractive index change in the medium. The physical mechanism of this phenomenon was investigated, and it was found that cavitation bubbles generated in the medium were the main cause. Based on these findings, we performed light propagation simulations of this phenomenon. Second, as an optical device using this technology, we developed a multifunctional thin lens that can change its focal point in three dimensions at high speed.

Academic Significance and Societal Importance of the Research Achievements

高周波強力超音波によって引き起こされる局所的,静的,かつ巨大な屈折率変化は本研究によって初めて実験的に確認され,その物理メカニズムの解明は学術的にも意義が大きいと考える.また,本現象に関する数値シミュレーションの開発は,今後新たな小型光音響デバイスを開発する際の設計手法として活用できるため,スマートフォンに代表される電子デバイスや自動車産業,医療分野など様々な産業分野に与えるインパクトは大きい.

Report

(4 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Annual Research Report
  • 2022 Annual Research Report
  • Research Products

    (65 results)

All 2025 2024 2023 2022

All Journal Article (18 results) (of which Peer Reviewed: 14 results,  Open Access: 6 results) Presentation (42 results) (of which Int'l Joint Research: 12 results,  Invited: 1 results) Patent(Industrial Property Rights) (5 results)

  • [Journal Article] Ultrasound liquid?gel hybrid lens using acoustic radiation forces2025

    • Author(s)
      Miki Haruto、Nakamura Kosuke、Harada Yuki、Matsukawa Mami、Koyama Daisuke
    • Journal Title

      Applied Optics

      Volume: 64 Issue: 4 Pages: 821-821

    • DOI

      10.1364/ao.544503

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Optical Characteristics of an Ultrasound Gel Lens2025

    • Author(s)
      Miki Haruto、Taniguchi Fumiko、Nakamura Kosuke、Harada Yuki、Matsukawa Mami、Koyama Daisuke
    • Journal Title

      IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control

      Volume: - Pages: 48-52

    • DOI

      10.1109/ojuffc.2025.3561101

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ultrasonically induced microscopic refractive index gradient and the relationship with high-frequency ultrasonic cavitation2025

    • Author(s)
      Harada Y.、Ishikawa M.、Matsukawa M.、Koyama D.
    • Journal Title

      Journal of Applied Physics

      Volume: 137 Issue: 11 Pages: 113102-113102

    • DOI

      10.1063/5.0242290

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Applied acoustic devices using ultrasound radiation force2024

    • Author(s)
      小山 大介
    • Journal Title

      Oyo Buturi

      Volume: 93 Issue: 7 Pages: 396-402

    • DOI

      10.11470/oubutsu.93.7_396

    • ISSN
      0369-8009, 2188-2290
    • Year and Date
      2024-07-01
    • Related Report
      2024 Annual Research Report
  • [Journal Article] Simulation of light propagation in medium with an ultrasonically induced refractive index gradient2024

    • Author(s)
      Harada Y.、Ishikawa M.、Kuroda Y.、Matsukawa M.、Koyama D.
    • Journal Title

      Journal of Applied Physics

      Volume: 135 Issue: 19 Pages: 193104-193104

    • DOI

      10.1063/5.0207446

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ultrasonic liquid crystal tunable light diffuser2024

    • Author(s)
      Kuroda Yuma、Mizuno Ryoya、Koyama Daisuke
    • Journal Title

      Scientific Reports

      Volume: 14 Issue: 1 Pages: 15445-15445

    • DOI

      10.1038/s41598-024-66413-2

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ultrasonic aperture-tunable gel lens2024

    • Author(s)
      Nakamura Kosuke、Harada Yuki、Miki Haruto、Tagashira Kokichi、Matsukawa Mami、Koyama Daisuke
    • Journal Title

      Applied Optics

      Volume: 63 Issue: 21 Pages: 5778-5778

    • DOI

      10.1364/ao.528980

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Focus control of a concave?convex ultrasonic gel lens in the radial direction2024

    • Author(s)
      Tagashira K.、Harada Y.、Nakamura K.、Miki H.、Matsukawa M.、Koyama D.
    • Journal Title

      Journal of Applied Physics

      Volume: 136 Issue: 11 Pages: 113101-113101

    • DOI

      10.1063/5.0218754

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 超高周波強力超音波による媒質の屈折率変化2024

    • Author(s)
      原田裕生, 小山大介
    • Journal Title

      超音波TECHNO

      Volume: 36 Pages: 52-56

    • Related Report
      2024 Annual Research Report
  • [Journal Article] Giant static refractive index gradient induced by strong ultrasonic wave2024

    • Author(s)
      Yuki Harada, Mutsuo Ishikawa, Yuma Kuroda, Mami Matsukawa, Daisuke Koyama
    • Journal Title

      Applied Physics Letters

      Volume: 124 Issue: 1 Pages: 011102-011102

    • DOI

      10.1063/5.0174915

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Acousto-thermal birefringence of iron(III) chloride using ultrasound flexural standing wave2024

    • Author(s)
      Kuroda Yuma、Emoto Akira、Koyama Daisuke
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 63 Issue: 2 Pages: 028002-028002

    • DOI

      10.35848/1347-4065/ad1bc1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Frequency characteristics of an ultrasonic varifocal liquid crystal lens2024

    • Author(s)
      Kuroda Yuma、Harada Yuki、Emoto Akira、Matsukawa Mami、Koyama Daisuke
    • Journal Title

      Applied Optics

      Volume: 63 Issue: 9 Pages: 2256-2256

    • DOI

      10.1364/ao.515888

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 超音波による可変焦点レンズ2023

    • Author(s)
      小山大介
    • Journal Title

      超音波TECHNO

      Volume: 35 Pages: 72-76

    • Related Report
      2023 Annual Research Report
  • [Journal Article] 超音波ピント調節レンズ2023

    • Author(s)
      小山大介
    • Journal Title

      トランジスタ技術SPECIAL

      Volume: 164 Pages: 142-148

    • Related Report
      2023 Annual Research Report
  • [Journal Article] How to fix an ultrasonic variable-focus liquid crystal lens for substrate-mountable applications2023

    • Author(s)
      Kuroda Yuma、Harada Yuki、Onaka Jessica、Emoto Akira、Matsukawa Mami、Koyama Daisuke
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 62 Issue: SJ Pages: SJ8004-SJ8004

    • DOI

      10.35848/1347-4065/acb71c

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Orientation angles of liquid crystals via ultrasound vibrations2022

    • Author(s)
      Iwase Takahiro、Kuroda Yuma、Onaka Jessica、Emoto Akira、Matsukawa Mami、Koyama Daisuke
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 61 Issue: 6 Pages: 068002-068002

    • DOI

      10.35848/1347-4065/ac6e1a

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of the interlayer thickness on the optical characteristics of an ultrasound multilayered liquid crystal lens2022

    • Author(s)
      Kuroda Yuma、Iwase Takahiro、Onaka Jessica、Harada Yuki、Emoto Akira、Matsukawa Mami、Koyama Daisuke
    • Journal Title

      Applied Physics Express

      Volume: 15 Issue: 12 Pages: 122004-122004

    • DOI

      10.35848/1882-0786/aca0da

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Optical evaluation of a double-layered ultrasound liquid crystal lens2022

    • Author(s)
      Onaka Jessica、Koyama Daisuke、Kuroda Yuma、Emoto Akira、Matsukawa Mami
    • Journal Title

      Journal of Applied Physics

      Volume: 131 Issue: 19 Pages: 193103-193103

    • DOI

      10.1063/5.0091093

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Presentation] 超音波による可変焦点光学レンズ,2025

    • Author(s)
      小山大介
    • Organizer
      電子情報通信学会 超音波研究会
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] 超音波振動と液晶を用いた可変NDフィルタの基礎検討2025

    • Author(s)
      水野稜山, 呉沢農, 江本顕雄, 小山大介
    • Organizer
      日本音響学会第153回(2025年春季)研究発表会
    • Related Report
      2024 Annual Research Report
  • [Presentation] Light Propagation in a Refractive lndex Gradient lnduced by High-lntensity Ultrasound in the 100-Megahertz Range2024

    • Author(s)
      Y. Harada, M. Ishikawa, Y. Kuroda, M. Matsukawa, D. Koyama
    • Organizer
      21st lnternational Workshop on Piezoelectric Materials and Applications
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Focusing Characteristics of Ultrasound Liquid Lens Using a Viscoelastic Gel Film and Acoustic Radiation Force2024

    • Author(s)
      H. Miki, Y. Harada, K. Nakamura, D. Koyama
    • Organizer
      21st lnternational Workshop on Piezoelectric Materials and Applications
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Refractive Index Change and Nanobubble Cluster Induced by 100-Megahertz-Range, High-Intensity Ultrasonic Irradiation2024

    • Author(s)
      Y. Harada, M. Ishikawa, M. Matsukawa, D. Koyama
    • Organizer
      2024 IEEE Ultrasonics, Ferroelectrics, and Frequency Control joint Symposium
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Square-Wave Drive on Ultrasonic Liquid Crystal Optical Lenses2024

    • Author(s)
      R. Mizuno, Y. Kuroda, A. Emoto, M. Matsukawa, D. Koyama
    • Organizer
      2024 IEEE Ultrasonics, Ferroelectrics, and Frequency Control joint Symposium
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Optical Characteristics of an Ultrasound Gel Lens2024

    • Author(s)
      H. Miki, K. Nakamura, Y. Harada, M. Matsukawa, D. Koyama
    • Organizer
      2024 IEEE Ultrasonics, Ferroelectrics, and Frequency Control joint Symposium
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 矩形波電圧が超音波液晶光学レンズに与える影響2024

    • Author(s)
      水野稜山, 黒田悠真, 江本顕雄, 松川真美, 小山大介
    • Organizer
      電子情報通信学会 超音波研究会
    • Related Report
      2024 Annual Research Report
  • [Presentation] VHF帯域の強力超音波照射によって誘起される屈折率勾配中の光伝搬シミュレーション2024

    • Author(s)
      原田裕生, 石河睦生, 松川真美, 小山大介
    • Organizer
      電子情報通信学会 超音波研究会
    • Related Report
      2024 Annual Research Report
  • [Presentation] 高周波強力超音波による屈折率制御技術と超音波光デバイスへの展開2024

    • Author(s)
      原田裕生, 石河睦生, 松川真美, 小山大介
    • Organizer
      弾性波素子技術コンソーシアム研究会
    • Related Report
      2024 Annual Research Report
  • [Presentation] 超音波ゲルレンズの透過光波面解析2024

    • Author(s)
      三木陽斗, 中村光佑, 原田裕生, 小山大介
    • Organizer
      日本音響学会第152回(2024年秋季)研究発表会
    • Related Report
      2024 Annual Research Report
  • [Presentation] 高周波強力超音波照射によって誘起される屈折率変化とナノバブル密度分布の関係2024

    • Author(s)
      原田裕生, 石河睦生, 松川真美, 小山大介
    • Organizer
      日本音響学会第152回(2024年秋季)研究発表会
    • Related Report
      2024 Annual Research Report
  • [Presentation] 100MHz帯の高強度超音波によって誘起される不均一屈折率場中の光伝搬解析2024

    • Author(s)
      原田裕生, 石河睦生, 松川真美, 小山大介
    • Organizer
      2024年第85回応用物理学会秋季学術講演会
    • Related Report
      2024 Annual Research Report
  • [Presentation] 入力電圧波形が超音波液晶光学レンズに与える影響2024

    • Author(s)
      水野稜山, 江本顕雄, 小山大介
    • Organizer
      第45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
      2024 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2024

    • Author(s)
      狩野圭吾, 水野稜山, 小山大介
    • Organizer
      第27回日本音響学会関西支部 若手研究者交流研究発表会
    • Related Report
      2024 Annual Research Report
  • [Presentation] 円筒のたわみ進行波によって発生する流体中の旋回流と光デバイスへの応用2024

    • Author(s)
      富田理紗子, 岩青葉, 小山大介
    • Organizer
      電子情報通信学会 超音波研究会
    • Related Report
      2024 Annual Research Report
  • [Presentation] 超音波振動を用いた液晶の屈折率変化による光路制御に関する基礎検討2024

    • Author(s)
      黒田悠真, 小山大介
    • Organizer
      電子情報通信学会 超音波研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 粘弾性ゲル膜と音響放射力を用いた超音波液体レンズのフォーカシング特性2024

    • Author(s)
      三木陽斗, 原田裕生, 中村光佑, 小山大介
    • Organizer
      日本音響学会第151回(2024年春季)研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] VHF帯域の強力超音波照射によって発生するキャビテーションナノバブル粒径の周波数依存性2024

    • Author(s)
      原田裕生, 石河睦生, 松川真美, 小山大介
    • Organizer
      日本音響学会第151回(2024年春季)研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Control of the effective apertures of an ultrasound variable-focus liquid crystal lens using multiple flexural vibration modes2023

    • Author(s)
      Y. Kuroda, Y. Harada, A. Emoto, M. Matsukawa, D. Koyama
    • Organizer
      IEEE International Ultrasonics Symposium 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ultrasound liquid lens using a viscoelastic gel film and acoustic radiation force2023

    • Author(s)
      H. Miki, Y. Harada, K. Nakamura, M. Matsukawa, D. Koyama
    • Organizer
      IEEE International Ultrasonics Symposium 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Controllable refractive index gradient by 100-megahertz-range high-intensity ultrasound2023

    • Author(s)
      Y. Harada, M. Ishikawa, Y. Kuroda, M. Matsukawa, D. Koyama
    • Organizer
      IEEE International Ultrasonics Symposium 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Focus control of a concave ultrasonic gel lens2023

    • Author(s)
      K. Tagashira, Y. Harada, K. Nakamura, D. Koyama
    • Organizer
      185th Meeting of the Acoustical Society of America
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 粘弾性ゲル膜と音響放射力を用いた超音波液体レンズ2023

    • Author(s)
      三木陽斗, 原田裕生, 中村光佑, 松川真美, 小山大介
    • Organizer
      電子情報通信学会 超音波研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 100MHz帯強力超音波による水の屈折率変化2023

    • Author(s)
      原田裕生, 石河睦生, 黒田悠真, 松川真美, 小山大介
    • Organizer
      第47回非線形音響研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 100MHz帯の強力超音波照射によって発生する音響キャビテーションバブルの粒径評価2023

    • Author(s)
      原田裕生, 石河睦生, 松川真美, 小山大介
    • Organizer
      日本音響学会第150回(2023年秋季)研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 凹型超音波ゲルレンズの径方向制御2023

    • Author(s)
      田頭幸吉, 中村光佑, 三木陽斗, 小山大介
    • Organizer
      日本音響学会第150回(2023年秋季)研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 超音波たわみ定在波を用いたα-酸化鉄(Ⅲ)コロイドの複屈折変化2023

    • Author(s)
      黒田悠真, 江本顕雄, 小山大介
    • Organizer
      日本音響学会第150回(2023年秋季)研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 超音波ゲルレンズの光学特性評価2023

    • Author(s)
      中村光佑, 原田裕生, 三木陽斗, 黒田悠真, 小山大介
    • Organizer
      日本音響学会第150回(2023年秋季)研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] VHF帯の強力超音波放射による水中の屈折率変化と音響キャビテーションの関係2023

    • Author(s)
      原田裕生, 石河睦生, 松川真美, 小山大介
    • Organizer
      第44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
      2023 Annual Research Report
  • [Presentation] 超音波によるα-酸化鉄(Ⅲ)コロイドの複屈折2023

    • Author(s)
      黒田悠真, 江本顕雄, 小山大介
    • Organizer
      第44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
      2023 Annual Research Report
  • [Presentation] 凹凸両用超音波ゲルレンズの径方向焦点制御2023

    • Author(s)
      田頭幸吉, 中村光佑, 原田裕生, 小山大介
    • Organizer
      電子情報通信学会 超音波研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 超音波液晶光学レンズの矩形波駆動2023

    • Author(s)
      水野稜山, 黒田悠真, 江本顕雄, 松川真美, 小山大介
    • Organizer
      第26回日本音響学会関西支部 若手研究者交流研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 100MHz帯域の強力超音波照射によって形成される屈折率勾配中の光伝搬解析2023

    • Author(s)
      原田裕生, 石河睦生, 松川真美, 小山大介
    • Organizer
      第69回光波センシング技術研究会講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 超音波式可変焦点液晶レンズの周波数特性2023

    • Author(s)
      黒田悠真, 原田裕生, 江本顕雄, 松川真美, 小山大介
    • Organizer
      電子情報通信学会 超音波研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 100MHz帯の強力超音波照射による音響キャビテーションの評価2023

    • Author(s)
      原田裕生, 石河睦生, 松川真美, 小山大介
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Ultrasound Multi-Layered Liquid Crystal Lens2022

    • Author(s)
      Y. Kuroda, T. Iwase, J. Onaka, A. Emoto, M. Matsukawa, D. Koyama
    • Organizer
      IEEE International Ultrasonics Symposium 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Optical analyses of a variable-focus gel lens based on ultrasound vibration2022

    • Author(s)
      Y. Harada, S. Hashimoto, H. Suzuyama, K. Nakamura, M. Matsukawa, D. Koyama
    • Organizer
      International Workshop on Piezoelectric Materials and Applications in Actuators 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of acousto-optic effect in liquid using high-frequency and high-intensity ultrasound2022

    • Author(s)
      Y. Harada, M. Ishikawa, S. Inamoto, H. Suzuyama, M. Matsukawa, D. Koyama
    • Organizer
      183rd Meeting of the Acoustical Society of America
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 基板実装型超音波液晶レンズの検討2022

    • Author(s)
      黒田悠真, ジェシカ オナカ, 原田裕生, 江本顕雄, 松川真美, 小山大介
    • Organizer
      日本音響学会第148回(2022年秋季)研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 基板実装型超音波式可変焦点液晶レンズ2022

    • Author(s)
      黒田悠真, 原田裕生, ジェシカ オナカ, 江本顕雄, 松川真美, 小山大介
    • Organizer
      第43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
      2022 Annual Research Report
  • [Presentation] 100MHz帯の強力超音波による水中の屈折率変化が入射光に与える影響2022

    • Author(s)
      原田裕生, 石河睦生, 稲本脩人, 松川真美, 小山大介
    • Organizer
      電子情報通信学会 超音波研究会
    • Related Report
      2022 Annual Research Report
  • [Patent(Industrial Property Rights)] 可変NDフィルタおよび可変NDフィルタ制御方法2025

    • Inventor(s)
      小山大介,水野稜山,呉沢農
    • Industrial Property Rights Holder
      同志社大学
    • Industrial Property Rights Type
      特許
    • Filing Date
      2025
    • Related Report
      2024 Annual Research Report
  • [Patent(Industrial Property Rights)] 液体レンズ装置および液体レンズ制御方法2024

    • Inventor(s)
      小山大介,富田理紗子
    • Industrial Property Rights Holder
      同志社大学
    • Industrial Property Rights Type
      特許
    • Filing Date
      2024
    • Related Report
      2024 Annual Research Report
  • [Patent(Industrial Property Rights)] 超音波液晶装置および超音波液晶制御方法2024

    • Inventor(s)
      小山大介, 黒田悠真
    • Industrial Property Rights Holder
      同志社大学
    • Industrial Property Rights Type
      特許
    • Filing Date
      2024
    • Related Report
      2023 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
      小山大介, 橋本隼佑
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2022-022334
    • Filing Date
      2022
    • Related Report
      2022 Annual Research Report
  • [Patent(Industrial Property Rights)] 超音波光偏向器、内視鏡装置および超音波光偏向方法2022

    • Inventor(s)
      小山大介, 原田裕生,石河睦生
    • Industrial Property Rights Holder
      小山大介, 原田裕生,石河睦生
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2022-184142
    • Filing Date
      2022
    • Related Report
      2022 Annual Research Report

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Published: 2022-04-19   Modified: 2026-01-16  

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