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Development of the visual encryption device using higher-order birefringence

Research Project

Project/Area Number 23656250
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Communication/Network engineering
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

UMEDA Norihiro  東京農工大学, 大学院・工学研究院, 教授 (60111803)

Co-Investigator(Kenkyū-buntansha) IWAMI Kentarou  東京農工大学, 大学院・工学研究院, 准教授 (80514710)
Project Period (FY) 2011 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2011: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords視覚復号暗号 / 高次複屈折 / 波長分散 / セキュリティ / 紫外線硬化樹脂 / 紫外線硬化液晶
Research Abstract

We will propose a new type of visual encryption device composed of higher-order birefringence elements. When a higher-order birefringence sample which is sandwiched between a pair of polarizer is illuminated with white light from one side, the sample with white color is observed. On the other hand, when the sample is illuminated by monochromatic light, its brightness of transparent light depends on a wavelength. The encryption device is fabricated by controlling the amount of higher order birefringence which gives a high contrast at only certain wavelength under polarized illumination. The device can be decoded by the illumination of specific reading wavelength.

Report

(3 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Research-status Report
  • Research Products

    (13 results)

All 2012 2011 Other

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (5 results) Remarks (3 results)

  • [Journal Article] 2つのキー波長を持つ高次複屈折視覚復号型情報セキュリティーデバイス2012

    • Author(s)
      高和宏行,手島昂太朗,岩見健太郎,高柳淳夫,梅田倫弘,築地光雄
    • Journal Title

      光学

      Volume: 41,10 Pages: 534-538

    • URL

      http://www.tuat.ac.jp/~umedalab

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] 2 つのキー波長を持つ 高次複屈折視覚復号型情報セキュリティーデバイス2012

    • Author(s)
      高和宏行, 手島昂太朗, 岩見健太郎, 高柳淳夫, 梅田倫弘, 築地光雄
    • Journal Title

      光学

      Volume: 41 Pages: 534-538

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Birefringence Polarimeter Using Dual LiNbO3 Electrooptic Crystal Modulators2012

    • Author(s)
      T. Saitou, M. N. Bin, H. Kowa , N. Umeda, K. Takizawa, E. Kondoh, and L. Jin
    • Journal Title

      Jpn. J. Appl. Phys.

      Volume: 51/082201 Issue: 8R Pages: 1-5

    • DOI

      10.1143/jjap.51.082201

    • NAID

      210000141033

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 高次複屈折を用いた情報セキュリティーデバイスの開発2011

    • Author(s)
      高和宏行,岩見健太郎,梅田倫弘,築地光雄
    • Journal Title

      光学

      Volume: 40,9 Pages: 490-498

    • NAID

      10029623005

    • URL

      http://www.tuat.ac.jp/~umedalab

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] 高次複屈折を用いた情報セキュリティーデバイスの開発2011

    • Author(s)
      高和宏行、岩見健太郎、梅田倫弘、築地光雄
    • Journal Title

      光学

      Volume: 40 Pages: 490-498

    • NAID

      10029623005

    • Related Report
      2011 Research-status Report
    • Peer Reviewed
  • [Presentation] UV硬化液晶を用いた視覚復号型暗号デバイスの開発2012

    • Author(s)
      手島昂太朗,高和宏行,岩見健太郎,梅田倫弘,築地光雄,金蓮花
    • Organizer
      第73回応用物理学会学術講演会
    • Place of Presentation
      愛媛、愛媛大学
    • Year and Date
      2012-09-12
    • Related Report
      2012 Final Research Report
  • [Presentation] UV 硬化液晶を用いた視 覚復号型暗号デバイスの開発2012

    • Author(s)
      手島昂太朗, 高和宏行, 岩見健太郎, 梅田倫弘, 築地光雄, 金蓮花
    • Organizer
      第73回応用物理学会学術講演会
    • Place of Presentation
      松山・愛媛大学
    • Related Report
      2012 Annual Research Report
  • [Presentation] Development of a visual encryption device using higher-order birefringence2011

    • Author(s)
      H. Kowa, T. Murana, K. Iwami, N. Umeda, M. Tsukiji and A. Takayanagi
    • Organizer
      Proc. SPIE
    • Place of Presentation
      San Diego, USA
    • Year and Date
      2011-08-25
    • Related Report
      2012 Final Research Report
  • [Presentation] 高次複屈折位相子を用いた複数画像表示デバイス2011

    • Author(s)
      手島昂太朗,高和宏行,岩見健太郎,梅田倫弘
    • Organizer
      レーザー顕微鏡研究会第37回講演会
    • Place of Presentation
      和光、理化学研究所
    • Year and Date
      2011-07-06
    • Related Report
      2012 Final Research Report
  • [Presentation] Development of the visual encryption device using higher-order birefringence2011

    • Author(s)
      H. Kowa, T. Murana, K. Iwami, N. Umeda, M. Tsukiji and A. Takayanagi
    • Organizer
      SPIE Optics + Photonics 2011
    • Place of Presentation
      神奈川工科大学(神奈川・厚木)SanDiego (USA)
    • Related Report
      2011 Research-status Report
  • [Remarks]

    • URL

      http://www.tuat.ac.jp/~umedalab

    • Related Report
      2012 Final Research Report
  • [Remarks] 東京農工大学工学府梅田研究室

    • URL

      http://www.tuat.ac.jp/~umedalab

    • Related Report
      2012 Annual Research Report
  • [Remarks]

    • URL

      http://www.tuat.ac.jp/~umedalab

    • Related Report
      2011 Research-status Report

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Published: 2011-08-05   Modified: 2019-07-29  

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