• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Real-time full-field OCT using static swept source and wavelet transform

Research Project

Project/Area Number 16K04973
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Optical engineering, Photon science
Research InstitutionNiigata University

Principal Investigator

Suzuki Takamasa  新潟大学, 自然科学系, 教授 (40206496)

Co-Investigator(Kenkyū-buntansha) 崔 森悦  新潟大学, 自然科学系, 研究准教授 (60568418)
村松 正吾  新潟大学, 自然科学系, 准教授 (30295472)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords波長走査光源 / OCT / ウェーブレット変換 / 光外部共振器 / リトロー型光外部共振器 / 連続ウェーブレット変換 / 応用光学・量子光工学 / 超精密計測 / 計測工学
Outline of Final Research Achievements

Recently, optical coherence tomography has high demand for medical diagnosis. In this study, we developed low-cost and high-performance swept source (SS) by using acousto-optic deflector. Characteristics, such as wavelength scanning range, response time, optical power, have been improved in this SS. Moreover, OCT was configured with this SS. We confirmed that accurate image restoration was realized by using continuous wavelet transform instead of Fourier transform.

Academic Significance and Societal Importance of the Research Achievements

オプティカル・コヒーレンス・トモグラフィ(OCT)では、波長走査光源がよく用いられる。これまでの光源は、ミラーあるいは回折格子といった光学部品を圧電素子(PZT)で機械的に動かす構造であり、波長の走査速度を高めることは困難であった。これに対し本研究では、回折格子へのビーム入射角を超音波偏向器を使って制御する方式を新たに開発した。波長の走査速度を飛躍的に高め、医療診断の時間短縮と高精度化が実現できる点で社会的意義は大きい。一方信号処理には、これまで当該分野であまり用いられてこなかったウェーブレット変換を適用した。OCTの画像再生に、新しい解析手法を提案している点で学術的意義があるものと考える。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (4 results)

All 2018 2017

All Presentation (4 results) (of which Int'l Joint Research: 4 results)

  • [Presentation] Full-field optical coherence tomography using acousto-optically tuned external-cavity laser diode and wavelet transform2018

    • Author(s)
      Takamasa Suzuki, Gen Suda, Samuel Choi, and Osami Sasaki
    • Organizer
      Frontiers in Optics 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Improvement of wavelength-scanning range in acousto-optically tuned external-cavity laser diode2018

    • Author(s)
      Nariyasu Sugawara, Takamasa Suzuki, and Samuel Choi
    • Organizer
      2018 Joint Symposia on Optics hosted by Optical Society of Japan
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Acousto-optically tuned eternal-cavity laser diode based on Littraw configuration2017

    • Author(s)
      Gen Suda, Takamasa Suzuki, Samuel Choi, and Osami Sasaki
    • Organizer
      International conference on Optoacoustics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Full-field optical coherence tomography using acousto-optically tuned external-cavity laser diode in Littrow configuration2017

    • Author(s)
      Gen Suda, Takamasa Suzuki, Samuel Choi, and Osami Sasaki
    • Organizer
      The Twelfth Japan-Finland Joint Symposium on Optics in Engineering
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2016-04-21   Modified: 2020-03-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi