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Three-dimensional refractive index measurement system using shear interferometer

Research Project

Project/Area Number 18K04158
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21030:Measurement engineering-related
Research InstitutionHokkaido University

Principal Investigator

Tomioka Satoshi  北海道大学, 工学研究院, 教授 (40237110)

Co-Investigator(Kenkyū-buntansha) 宮本 直樹  北海道大学, 工学研究院, 准教授 (00552879)
西山 修輔  日本医療大学, 保健医療学部, 教授 (30333628)
松本 裕  北海道大学, 工学研究院, 助教 (40360929)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords屈折率分布 / 三次元非接触計測 / シア干渉計 / コンピュータトモグラフィー / 位相計測 / 非定常 / 非定常現象 / 三元非接触計測
Outline of Final Research Achievements

In order to measure the three-dimensional refractive index distribution, a coupling method of interferometer and computed tomography can be used. As the interferometer to measure delay of wavefront due to object from different incident angles, we adopted a shearing interferometer, which always satisfies interference condition during changing incident angle since the shearing interferometer does not use a reference wave. We demonstrated that interferograms obtained with the shearing interferometer are not affected by vibration caused by changing of the incident direction. In addition, we measured the three-dimensional distribution of the refractive index of the gas near the candle flame, and the reconstructed result was qualitative agreed.

Academic Significance and Societal Importance of the Research Achievements

気体の密度(温度)や液体の濃度等は屈折率に依存するため、屈折率の三次元分布の計測ができれば、間接的にこれらの量の三次元分布を計測できる。従来の三次元屈折率分布を計測する手法としては、物体光と参照光を用いた二光束干渉計とコンピュータトモグラフィーの利用が数少ない例であった。その理由は二光束干渉計では、複数方向からの干渉計測が容易でなかったためと考えられるが、本研究で採用したシア干渉計は、方向を変更した場合でも、干渉条件を常に満たし、かつ、振動の影響を受けないため測定体系の構築が容易になる。今後、多くの測定対象の三次元計測に期待できる。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (15 results)

All 2021 2020 2019 2018

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (13 results) (of which Int'l Joint Research: 4 results,  Invited: 2 results)

  • [Journal Article] Phase Extraction from Single Interferogram Including Closed-Fringe Using Deep Learning2019

    • Author(s)
      Kando Daichi、Tomioka Satoshi、Miyamoto Naoki、Ueda Ryosuke
    • Journal Title

      Applied Sciences

      Volume: 9 Issue: 17 Pages: 3529-3529

    • DOI

      10.3390/app9173529

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Desingularization of matrix equations employing hypersingular integrals in boundary element methods using double nodes2019

    • Author(s)
      Tomioka Satoshi、Nishiyama Shusuke、Matsumoto Yutaka、Miyamoto Naoki
    • Journal Title

      Engineering Analysis with Boundary Elements

      Volume: 106 Pages: 493-504

    • DOI

      10.1016/j.enganabound.2019.06.003

    • NAID

      120007145369

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 大型ヘリカル装置における実座標を用いたモンテカルロコードによる中性子発生率の解析2021

    • Author(s)
      本間崇文,松本裕,關良輔,長壁正樹,小川国大,磯部光孝,山内有二,富岡智
    • Organizer
      日本原 子力学会北海道支部第38回研究発表会・プラズマ・核融合学会北海道地区研究連絡会第 24回研究発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Real-time volumetric image generation based on CT image deformation driven by displacement of internal fiducial markers2020

    • Author(s)
      Risa Hayashi,Naoki Miyamoto,Kouhei Yokokawa,Seishin Takao,Koichi Miyazaki,Kikuo Umegaki
    • Organizer
      第119回日本医学物理学会学術大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 動体追跡放射線治療におけるDeep Learningを用いたX線透視画像上の非球形マーカ位置の認識2020

    • Author(s)
      阿部和貴、宮崎康一、横川航平、高尾聖心、平田雄一、梅垣菊男、宮本直樹
    • Organizer
      第39回日本医用画像工学会退会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Real-time adaptive radiotherapy with internal fiducial markers and real-time-imaging technique2020

    • Author(s)
      Naoki Miyamoto
    • Organizer
      日本放射線腫瘍学会第33回学術大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] LHDのNBIによるD-D核融合反応における生成粒子の速度分布関数の数値解析2020

    • Author(s)
      本間崇 文,松本裕,關良輔,長壁正樹,小川国大,磯部光孝,山内有二,富岡智
    • Organizer
      プラズマ・核融合学 会第37回年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Clinical feasibility evaluation of real-time tumor-tracking volumetric modulated arctherapy (RT-VMAT)2019

    • Author(s)
      Naoki Miyamoto, Ryusuke Suzuki, Sodai Tanaka, Masaya Tamura, Satoshi Tomioka, Hiroshi Taguchi, Norio Katoh, Rikiya Onimaru, Shinichi Shimizu, Hiroki Shirato
    • Organizer
      AAPM Annual Meeting
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 貫洞 大地, 柳瀬 佳亮, 富岡 智, 宮本 直樹, 上田 亮介, Samia Heshmat2019

    • Author(s)
      三次元屈折率計測用位相抽出における実測データによる畳み込みニューラルネットワークの学習,
    • Organizer
      日本光学会年次学術講演会(Optics & Photonics Japan 2019),
    • Related Report
      2019 Research-status Report
  • [Presentation] Phase extraction from interferogram using machine learning2019

    • Author(s)
      Daichi Kando, Satoshi Tomioka
    • Organizer
      2019 IS&T International Symposium on Electronic Imaging
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 屈折率の三次元分布計測法2019

    • Author(s)
      富岡 智
    • Organizer
      先進電磁波イメージング研究会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Time-dependent weighted reconstruction method with insufficient projection data for mobile target2018

    • Author(s)
      Sinnji Motoi, Satoshi Tomioka, Kikuo Umegaki, Naoki Miyamoto
    • Organizer
      第115回日本医学物理学会学術大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 二次元ポアソン方程式のフラックスの高精度数値解析法2018

    • Author(s)
      広上新, 富岡智
    • Organizer
      電磁界理論研究会
    • Related Report
      2018 Research-status Report
  • [Presentation] Real-time volumetric image generation with CT image deformation driven by displacement of internal fiducial markers2018

    • Author(s)
      Naoki Miyamoto, Naoki Matsumoto, Ryusuke Suzuki, Seishin Takao, Taeko Matsuura, Takaaki Fujii, Shusuke Hirayama, Satoshi Tomioka, Shinichi Shimizu, Kikuo Umegaki, Hiroki Shirato
    • Organizer
      2018 AAPM Annual Meeting
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Direct Flux Method to Solve Flux Distribution of Two-dimensional Poisson's Equation2018

    • Author(s)
      Arata Hirokami, Satoshi Tomioka
    • Organizer
      The 37th JSST Annual International Conference on Simulation Technology
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2022-01-27  

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