An optical measurement system for a velocity of the blood flow by using a novel liquid crystal optical device

• Project/Area Number: 20760215
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Electron device/Electronic equipment
• Research Institution: Akita University
• Principal Investigator: KAWAMURA Marenori Akita University, 大学院・工学資源学研究科, 助教 (90312694)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2008: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: 液晶材料 / 液晶光学デバイス / レンズ特性 / 焦点距離 / 光偏向 / 流速測定 / レーザ計測 / 多分割円形パターン電極 / ビーム偏向 / 焦点可変特性 / 高速フーリエ変換

Research Abstract

We propose an optical measurement system for a velocity of the blood flow by using a novel liquid crystal (LC) optical device with several divided circularly hole-patterned electrodes. The LC optical device has unique functions such as a variable focal length and beam-steering properties without any mechanical movements. The water flow and blood flow can be measured by using the optical measurement system.

Research Products

• [Journal Article] Elliptical Light Distribution Control by Using Liquid Crystal Device (2011)
  • Author(s): M.Kawamura, H.Goto
  • Journal Title: International Journal of Optomechatronics Vol.5 Pages: 15-29
  • Peer Reviewed
• [Journal Article] Liquid crystal device with a variable focal length by using two different ring electrodes (2011)
  • Author(s): M.Kawamura, Y.Ito
  • Journal Title: The institute of Electrical Engineers of Japan Volume: Vol.131, No.1/Sec.E Pages: 53-58
  • NAID: 10027637521
  • Peer Reviewed
• [Journal Article] Elliptical Light Distribution Control by Using Liquid Crystal Device (2011)
  • Author(s): M.Kawamura, H.Goto
  • Journal Title: International Journal of Optomechatronics Volume: Vol.5 Pages: 15-29
  • Peer Reviewed
• [Journal Article] Liquid crystal device with a variable focal length by using two different ring electrodes (2010)
  • Author(s): M.Kawamura, Y.Ito
  • Journal Title: The institute of Electrical Engineers of Japan 131 Pages: 53-58
  • NAID: 10027637521
  • Peer Reviewed
• [Journal Article] Transient Properties of a Liquid Crystal Optical Device with an Anamorphic Lens Property (2009)
  • Author(s): M.Kawamura, M.Ye, S.Sato
  • Journal Title: 510 Pages: 182-190
  • Peer Reviewed
• [Journal Article] Laser Manipulation by Using Liquid Crystal Devices with Variable-Focusing and Beam-Steering Functions (2009)
  • Author(s): M.Kawamura, J.Onishi, S.Sato
  • Journal Title: International Journal of Optomechatronics 3 Pages: 264-276
  • Peer Reviewed
• [Journal Article] Transient Properties of a Liquid Crystal Optical Device with an Anamorphic Lens Property (2009)
  • Author(s): M.Kawamura, M.Ye, S.Sato
  • Journal Title: Molecular Crystals and Liquid crystals 510 Pages: 182-190
  • Peer Reviewed
• [Journal Article] Transient properties of a liquid crystal lens with multiple divided circularly hole patterned electrodes (2009)
  • Author(s): M.Kawamura, H.Goto, S.Sato
  • Journal Title: International Symposium on Optomechatronics Technologies ISOT 2009 978-1-4244 Pages: 1-4
• [Journal Article] Transient Properties of a Liquid Crystal Optical Device with an Elliptical Intensity Distribution (2008)
  • Author(s): M.Kawamura, M.Ye, S.Sato
  • Journal Title: Japanese Journal of Applied Physics 47 Pages: 6404-6406
  • NAID: 40016211021
  • Peer Reviewed
• [Journal Article] Transient Properties of a Liquid Crystal Optical Device with an Elliptical Intensity Distribution (2008)
  • Author(s): M. Kawamura, M. Ye and S. Sato
  • Journal Title: Japanese Journal of Applied Physics 47 Pages: 6404-6406
  • NAID: 40016211021
  • Peer Reviewed
• [Presentation] 2層電極構造を有する液晶レンズにおけるプレティルト角とレンズパワーの関係 (2010)
  • Author(s): 河村希典, 後藤久志
  • Organizer: 平成22年度 応用物理学会東北支部学術講演会
  • Place of Presentation: 東北大学(仙台)
  • Year and Date: 2010-11-26
• [Presentation] Liquid crystal lens with two divided and double circularly hole-patterned electrodes (2010)
  • Author(s): M.Kawamura, H.Goto
  • Organizer: ISOT 2010 International Symposium on Optomechatronic Technologies
  • Place of Presentation: Toronto, Canada
  • Year and Date: 2010-10-26
• [Presentation] Liquid crystal lens with two divided and double circularly hole-patterned electrodes (2010)
  • Author(s): M.Kawamura, H.Goto
  • Organizer: ISOT 2010 International Symposium on Optomech atronic Technologies
  • Place of Presentation: 国際会議場(トロント)
  • Year and Date: 2010-10-26
• [Presentation] 補助円形パターン電極を用いた液晶レンズの電気光学特性 (2010)
  • Author(s): 河村希典, 伊藤雄平
  • Organizer: 春季第56回応用物理学関係連合講演会
  • Place of Presentation: 東海大学
  • Year and Date: 2010-03-20
• [Presentation] 液晶レンズを用いた顕微鏡システム (2010)
  • Author(s): 河村希典, 戸嶋邦貴
  • Organizer: 春季第56回応用物理学関係連合講演会
  • Place of Presentation: 東海大学
  • Year and Date: 2010-03-20
• [Presentation] 補助電極を用いた焦点可変型液晶素子における凹レンズ特性の向上 (2010)
  • Author(s): 河村希典, 湯本英治, 後藤久志
  • Organizer: 平成22年 電気学会全国大会
  • Place of Presentation: 明治大学
  • Year and Date: 2010-03-19
• [Presentation] Applications of a liquid crystal lens with functions of a variable focal length and beam steering (2009)
  • Author(s): 河村希典
  • Organizer: 2009 Annual Meeting of ROC Taiwan Liquid Crystal Society
  • Place of Presentation: 台湾 ホテル Lakeshore
  • Year and Date: 2009-12-18
• [Presentation] Liquid crystal lens and Its applications (2009)
  • Author(s): 河村希典
  • Organizer: LC materials workshop in NCTU
  • Place of Presentation: 台湾国立交通大学
  • Year and Date: 2009-12-17
• [Presentation] 焦点可変およびビーム偏向機能を有する液晶レンズの電気光学特性と応用技術開発 (2009)
  • Author(s): 河村希典
  • Organizer: 社団法人日本オプトメカトロニクス協会, 光学系設計技術部会
  • Place of Presentation: 機会振興会館
  • Year and Date: 2009-11-04
• [Presentation] Transient properties of a liquid crystal lens with multiple divided circularly hole patterned electrodes (2009)
  • Author(s): M.Kawamura, H.Goto, S.Sato
  • Organizer: International Symposium on Optomechatronics Technologies ISOT 2009
  • Place of Presentation: Istanbul, Turkey
  • Year and Date: 2009-09-22
• [Presentation] Transient properties of a liquid crystal lens with multiple divided circularly hole patterned electrodes (2009)
  • Author(s): 河村希典, 後藤久志, 佐藤進
  • Organizer: International Symposium on Optomechatronics Technologies ISOT 2009
  • Place of Presentation: Istanbul トルコ
  • Year and Date: 2009-09-22
• [Presentation] 二層円形パターン電極を用いた液晶レンズにおける凸レンズ特性の向上 (2009)
  • Author(s): 伊藤雄平, 河村希典, 葉茂, 佐藤進
  • Organizer: 2009年液晶学会討論会
  • Place of Presentation: 東京農工大学
  • Year and Date: 2009-09-15
• [Presentation] 補助円形パターン電極構造を有する焦点可変型液晶デバイス (2009)
  • Author(s): 後藤久志, 河村希典, 佐藤進
  • Organizer: 2009年液晶学会討論会
  • Place of Presentation: 東京農工大学
  • Year and Date: 2009-09-13
• [Presentation] 楕円形状屈折率分布特性を有する液晶光学素子の過渡応答解析 (2008)
  • Author(s): 吉野晶史, 河村希典, 佐藤進
  • Organizer: 第63回応用物理学会東北支部学術講演会
  • Place of Presentation: 仙台
  • Year and Date: 2008-12-05
• [Presentation] Liquid crystal lens with divided-circularly hole-patterned electrodes (2008)
  • Author(s): M.Kawamura, S.Sato
  • Organizer: 2008 International Display Research Conference (IDRC'08)
  • Place of Presentation: Orlando, Florida, U.S.A.
  • Year and Date: 2008-11-06
• [Presentation] Finite-difference time-domain calculation for a liquid crystal cell with micro-natterned alianment lavers (2008)
  • Author(s): M. Kawamura, M. Baba, D. Kato. S. Yanase and S. Sato
  • Organizer: 2008 International Display Research Conference(IDRC08)
  • Place of Presentation: Orlando, Florida, U.S.A.
  • Year and Date: 2008-11-06
• [Presentation] Liquid crystal lens with divided-circularly hole-patterned electrodes (2008)
  • Author(s): M. Kawamura and S. Sato
  • Organizer: 2008 International Display Research Conference(IDRC08)
  • Place of Presentation: Orlando, Florida, U. S. A.
  • Year and Date: 2008-11-06
• [Presentation] 液晶分子配向シミュレーション法を用いたアナモルフィック液晶デバイスの渦渡解析 (2008)
  • Author(s): 河村希典, 葉茂, 佐藤進
  • Organizer: 2008年液晶学会討論会
  • Place of Presentation: 京都
  • Year and Date: 2008-09-18
• [Presentation] 液晶分子配向シミュレーション法を用いたアナモルフィック液晶デバイスの過渡解析 (2008)
  • Author(s): 河村希典, 葉茂, 佐藤進
  • Organizer: 2008年液晶学会討論会
  • Place of Presentation: 京都
  • Year and Date: 2008-09-18
• [Presentation] 面内電界効果を用いた液晶光学デバイスの過渡特性 (2008)
  • Author(s): 伊藤雄平, 河村希典, 葉茂, 佐藤進
  • Organizer: 2008年液晶学会討論会
  • Place of Presentation: 京都
  • Year and Date: 2008-09-18
• [Presentation] Transient properties of a liquid crystal device with an anamorphic lens property (2008)
  • Author(s): M. Kawamura, M. Ye and S. Sato
  • Organizer: 2008 International Liquid Crystal Conference
  • Place of Presentation: Jeju, Jeju Island, Korea
  • Year and Date: 2008-06-30
• [Remarks] ホームページ等
  • URL: http://www.ee.akita-u.acjp/~liquid-crystal/kawamura/
• [Remarks]
  • URL: http://www.ee.akita-u.ac.jp/~liquid-crystal/kawamura/index.html
• [Remarks]
  • URL: http://www.ee.akita-u.ac.jp/~liquid-crystal/kawamura/index.html
• [Patent(Industrial Property Rights)] 光計測装置 (2008)
  • Inventor(s): 河村希典
  • Industrial Property Rights Holder: 秋田大学
  • Filing Date: 2008-03-31