Updated on 2024/09/28

写真a

 
NITANAI Eiji
 
Name of department
Institute of Innovation Initiatives, Center for Innovative and Joint Research
Job title
Associate Professor
Concurrent post
Center for Innovative and Joint Research（Vice Director）
Mail Address
E-mail address
Homepage
External link

Education

  • 1994
    -
    1998

    Muroran Institute of Technology   Graduate School of Engineering   Faculty of Engineering and Doctor's Course of the Graduate School  

  • 1992
    -
    1994

    Muroran Institute of Technology   Graduate School of Engineering   Faculty of Engineering and Master's Course of the Graduate School  

  • 1987
    -
    1992

    Muroran Institute of Technology   Faculty of Engineering   電気工学科  

Degree

  • Doctor(Engineering)   1998

Academic & Professional Experience

  • 2017.04
    -
    Now

    Wakayama University   産学連携イノベーションセンター   専任准教授

  • 2013.04
    -
    2017.03

    Wakayama University   産学連携・研究支援センター   専任准教授

  • 2007.04
    -
    2013.03

    Wakayama University   Faculty of Systems Engineering, Department of Opto-Mechatronics   助教

  • 1998.04
    -
    2007.03

    Wakayama University   Faculty of Systems Engineering, Department of Opto-Mechatronics   助手

Association Memberships

  • 米国光学会

  • 日本光学会

  • 応用物理学会

Research Areas

  • Nanotechnology/Materials / Optical engineering and photonics

Classes (including Experimental Classes, Seminars, Graduation Thesis Guidance, Graduation Research, and Topical Research)

  • 2023   Introduction to Engineering Ethics   Liberal Arts and Sciences Subjects

  • 2023   Introduction to Research Ethics   Liberal Arts and Sciences Subjects

  • 2023   Intellectual Property   Liberal Arts and Sciences Subjects

  • 2023   Graduation Research   Specialized Subjects

  • 2023   Graduation Research   Specialized Subjects

  • 2023   Introductory Seminar in Systems Engineering   Specialized Subjects

  • 2023   Graduation Research   Specialized Subjects

  • 2023   Practice for Research in Electrical and Electronic Engineering   Specialized Subjects

  • 2022   Introduction to Engineering Ethics   Liberal Arts and Sciences Subjects

  • 2022   Introduction to Research Ethics   Liberal Arts and Sciences Subjects

  • 2022   Practice for Research in Electrical and Electronic Engineering   Specialized Subjects

  • 2022   Graduation Research   Specialized Subjects

  • 2022   Graduation Research   Specialized Subjects

  • 2022   Graduation Research   Specialized Subjects

  • 2022   Graduation Research   Specialized Subjects

  • 2021   Practice for Research in Electrical and Electronic Engineering   Specialized Subjects

  • 2021   Graduation Research   Specialized Subjects

  • 2021   Graduation Research   Specialized Subjects

  • 2021   Introductory Seminar in Systems Engineering   Specialized Subjects

  • 2021   Introduction to Engineering Ethics   Liberal Arts and Sciences Subjects

  • 2021   Introduction to Research Ethics   Liberal Arts and Sciences Subjects

  • 2020   Introduction to Engineering Ethics   Liberal Arts and Sciences Subjects

  • 2020   Introduction to Research Ethics   Liberal Arts and Sciences Subjects

  • 2020   Graduation Research   Specialized Subjects

  • 2020   Graduation Research   Specialized Subjects

  • 2020   Practice for Research in Electrical and Electronic Engineering   Specialized Subjects

  • 2019   NA   Specialized Subjects

  • 2019   Practice for Research in Electronic Measurement   Specialized Subjects

  • 2018   Practice for Research in Electronic Measurement   Specialized Subjects

  • 2018   Introductory Seminar in Systems Engineering   Specialized Subjects

  • 2018   NA   Specialized Subjects

  • 2017   Practice for Research in Electronic Measurement   Specialized Subjects

  • 2017   NA   Specialized Subjects

  • 2016   Practice for reserches   Specialized Subjects

  • 2016   NA   Specialized Subjects

  • 2016   Applied Seminar   Specialized Subjects

  • 2016   Experiments A for Opto-mechatronics   Specialized Subjects

  • 2015   NA   Specialized Subjects

  • 2015   Practice for reserches   Specialized Subjects

  • 2015   Applied Seminar   Specialized Subjects

  • 2015   Experiments A for Opto-mechatronics   Specialized Subjects

  • 2014   NA   Specialized Subjects

  • 2014   Applied Seminar   Specialized Subjects

  • 2014   Practice for reserches   Specialized Subjects

  • 2014   Experiments A for Opto-mechatronics   Specialized Subjects

  • 2013   NA   Specialized Subjects

  • 2013   Practice for reserches   Specialized Subjects

  • 2013   Applied Seminar   Specialized Subjects

  • 2013   Experiments A for Opto-mechatronics   Specialized Subjects

  • 2012   NA   Specialized Subjects

  • 2012   Information Processing Ⅰ   Specialized Subjects

  • 2012   Introduction to Opto-Mechatronics   Specialized Subjects

  • 2012   Experiments A for Opto-mechatronics   Specialized Subjects

  • 2012   Applied Seminar   Specialized Subjects

  • 2012   Practice for reserches   Specialized Subjects

  • 2011   NA   Specialized Subjects

  • 2011   Experiments A for Opto-mechatronics   Specialized Subjects

  • 2011   Applied Seminar   Specialized Subjects

  • 2011   Practice for reserches   Specialized Subjects

  • 2011   Introductory Seminar   Liberal Arts and Sciences Subjects

  • 2011   Adovanced Practice in Basic Electromagnetics   Specialized Subjects

  • 2011   Information Processing Ⅰ   Specialized Subjects

  • 2011   Introduction to Opto-Mechatronics   Specialized Subjects

  • 2010   NA   Specialized Subjects

  • 2010   Information Processing Ⅰ   Specialized Subjects

  • 2010   Adovanced Practice in Basic Electromagnetics   Specialized Subjects

  • 2010   NA   Specialized Subjects

  • 2009   Practice for reserches   Specialized Subjects

  • 2009   NA   Specialized Subjects

  • 2009   Adovanced Practice in Basic Electromagnetics   Specialized Subjects

  • 2009   Introduction to Opto-Mechatronics   Specialized Subjects

  • 2009   NA   Specialized Subjects

  • 2009   NA   Specialized Subjects

  • 2008   Practice for reserches   Specialized Subjects

  • 2008   NA   Specialized Subjects

  • 2008   Experiments in Physics   Specialized Subjects

  • 2008   Practice in Basic Electromaganetics   Specialized Subjects

  • 2008   Introduction to Opto-Mechatronics   Specialized Subjects

  • 2008   NA   Specialized Subjects

  • 2008   NA   Specialized Subjects

  • 2007   Practice for reserches   Specialized Subjects

  • 2007   NA   Specialized Subjects

  • 2007   Experiments in Physics   Specialized Subjects

  • 2007   Practice in Basic Electromaganetics   Specialized Subjects

  • 2007   Introduction to Opto-Mechatronics   Specialized Subjects

  • 2007   NA   Specialized Subjects

  • 2007   NA   Specialized Subjects

▼display all

Independent study

  • 2009   迷路探査ロボット

  • 2009   迷路探索ロボット

  • 2009   迷路探査ロボット

  • 2008   スラロームロボットの製作

  • 2007   PICを使ったロボットの作製

  • 2007   PICを使ったロボットの成製

  • 2007   光センサーで物体をよけて進む自走式ロボット

▼display all

Classes

  • 2023   Systems Engineering SeminarⅠA   Master's Course

  • 2023   Systems Engineering SeminarⅠB   Master's Course

  • 2023   Systems Engineering SeminarⅡA   Master's Course

  • 2023   Systems Engineering SeminarⅡB   Master's Course

  • 2023   Systems Engineering Project SeminarⅠA   Master's Course

  • 2023   Systems Engineering Project SeminarⅠB   Master's Course

  • 2023   Systems Engineering Project SeminarⅡA   Master's Course

  • 2023   Systems Engineering Project SeminarⅡB   Master's Course

  • 2023   Systems Engineering Advanced Seminar Ⅰ   Doctoral Course

  • 2023   Systems Engineering Advanced Seminar Ⅰ   Doctoral Course

  • 2023   Systems Engineering Advanced Seminar Ⅱ   Doctoral Course

  • 2023   Systems Engineering Advanced Seminar Ⅱ   Doctoral Course

  • 2023   Systems Engineering Advanced Research   Doctoral Course

  • 2023   Systems Engineering Advanced Research   Doctoral Course

  • 2023   Systems Engineering Global Seminar Ⅰ   Doctoral Course

  • 2023   Systems Engineering Global Seminar Ⅰ   Doctoral Course

  • 2023   Systems Engineering Global Seminar Ⅱ   Doctoral Course

  • 2023   Systems Engineering Global Seminar Ⅱ   Doctoral Course

  • 2022   Systems Engineering Global Seminar Ⅱ   Doctoral Course

  • 2022   Systems Engineering Global Seminar Ⅰ   Doctoral Course

  • 2022   Systems Engineering Advanced Research   Doctoral Course

  • 2022   Systems Engineering Advanced Seminar Ⅱ   Doctoral Course

  • 2022   Systems Engineering Advanced Seminar Ⅰ   Doctoral Course

  • 2022   Systems Engineering Project SeminarⅡB   Master's Course

  • 2022   Systems Engineering Project SeminarⅡA   Master's Course

  • 2022   Systems Engineering Project SeminarⅠB   Master's Course

  • 2022   Systems Engineering Project SeminarⅠA   Master's Course

  • 2022   Systems Engineering SeminarⅡB   Master's Course

  • 2022   Systems Engineering SeminarⅡA   Master's Course

  • 2022   Systems Engineering SeminarⅠB   Master's Course

  • 2022   Systems Engineering SeminarⅠA   Master's Course

  • 2021   Systems Engineering Global Seminar Ⅱ   Doctoral Course

  • 2021   Systems Engineering Global Seminar Ⅰ   Doctoral Course

  • 2021   Systems Engineering Advanced Research   Doctoral Course

  • 2021   Systems Engineering Advanced Seminar Ⅱ   Doctoral Course

  • 2021   Systems Engineering Advanced Seminar Ⅰ   Doctoral Course

  • 2021   Systems Engineering Project SeminarⅡB   Master's Course

  • 2021   Systems Engineering Project SeminarⅡA   Master's Course

  • 2021   Systems Engineering Project SeminarⅠB   Master's Course

  • 2021   Systems Engineering Project SeminarⅠA   Master's Course

  • 2021   Systems Engineering SeminarⅡB   Master's Course

  • 2021   Systems Engineering SeminarⅡA   Master's Course

  • 2021   Systems Engineering SeminarⅠB   Master's Course

  • 2021   Systems Engineering SeminarⅠA   Master's Course

  • 2020   Systems Engineering Global Seminar Ⅱ   Doctoral Course

  • 2020   Systems Engineering Global Seminar Ⅰ   Doctoral Course

  • 2020   Systems Engineering Advanced Research   Doctoral Course

  • 2020   Systems Engineering Advanced Seminar Ⅱ   Doctoral Course

  • 2020   Systems Engineering Advanced Seminar Ⅰ   Doctoral Course

  • 2020   Systems Engineering Project SeminarⅡB   Master's Course

  • 2020   Systems Engineering Project SeminarⅡA   Master's Course

  • 2020   Systems Engineering Project SeminarⅠB   Master's Course

  • 2020   Systems Engineering Project SeminarⅠA   Master's Course

  • 2020   Systems Engineering SeminarⅡB   Master's Course

  • 2020   Systems Engineering SeminarⅡA   Master's Course

  • 2020   Systems Engineering SeminarⅠB   Master's Course

  • 2020   Systems Engineering SeminarⅠA   Master's Course

  • 2019   Systems Engineering SeminarⅡB   Master's Course

  • 2019   Systems Engineering SeminarⅡA   Master's Course

  • 2019   Systems Engineering SeminarⅠB   Master's Course

  • 2019   Systems Engineering Project SeminarⅠA   Master's Course

  • 2019   Systems Engineering Project SeminarⅡB   Master's Course

  • 2019   Systems Engineering Project SeminarⅡA   Master's Course

  • 2019   Systems Engineering Project SeminarⅠB   Master's Course

  • 2019   Systems Engineering SeminarⅠA   Master's Course

  • 2018   NA   Doctoral Course

  • 2018   NA   Doctoral Course

  • 2018   Systems Engineering Advanced Research   Doctoral Course

  • 2018   Systems Engineering Advanced Research   Doctoral Course

  • 2018   Systems Engineering Project SeminarⅡB   Master's Course

  • 2018   Systems Engineering Project SeminarⅡA   Master's Course

  • 2018   Systems Engineering Project SeminarⅠB   Master's Course

  • 2018   Systems Engineering Project SeminarⅠA   Master's Course

  • 2018   Systems Engineering SeminarⅡB   Master's Course

  • 2018   Systems Engineering SeminarⅡA   Master's Course

  • 2018   Systems Engineering SeminarⅠB   Master's Course

  • 2018   Systems Engineering SeminarⅠA   Master's Course

  • 2017   Systems Engineering SeminarⅡB   Master's Course

  • 2017   Systems Engineering SeminarⅡA   Master's Course

  • 2017   Systems Engineering SeminarⅠB   Master's Course

  • 2017   Systems Engineering SeminarⅠA   Master's Course

  • 2016   Systems Engineering SeminarⅡA   Master's Course

  • 2016   Systems Engineering SeminarⅠB   Master's Course

  • 2016   NA  

  • 2016   Systems Engineering SeminarⅡA  

  • 2016   Systems Engineering SeminarⅠA  

  • 2015   NA  

  • 2015   NA  

  • 2015   Systems Engineering SeminarⅡA  

  • 2015   Systems Engineering SeminarⅠA  

  • 2014   NA  

  • 2014   Systems Engineering SeminarⅡA  

  • 2014   NA  

  • 2014   Systems Engineering SeminarⅠA  

  • 2013   Systems Engineering SeminarⅡA  

  • 2013   NA  

  • 2013   NA  

  • 2013   Systems Engineering SeminarⅠA  

  • 2013   Systems Engineering SeminarⅡB  

  • 2013   Systems Engineering SeminarⅡA  

  • 2013   Systems Engineering Project SeminarⅡB  

  • 2013   Systems Engineering Project SeminarⅡA  

  • 2012   Systems Engineering Project SeminarⅡB  

  • 2012   Systems Engineering Advanced Seminar Ⅱ  

  • 2012   Systems Engineering Advanced Seminar Ⅰ  

  • 2012   Systems Engineering Advanced Research  

  • 2012   Systems Engineering SeminarⅡA  

  • 2012   Systems Engineering SeminarⅠA  

  • 2012   Systems Engineering Project SeminarⅡA  

  • 2012   Systems Engineering Project SeminarⅠA  

  • 2012   Systems Engineering Advanced Seminar Ⅱ  

  • 2012   Systems Engineering Advanced Seminar Ⅰ  

  • 2012   Systems Engineering Advanced Research  

  • 2012   Systems Engineering SeminarⅡB  

  • 2012   Systems Engineering SeminarⅠB  

  • 2012   Systems Engineering Project SeminarⅠB  

  • 2011   Systems Engineering Project SeminarⅡB  

  • 2011   Systems Engineering Project SeminarⅡA  

  • 2011   Systems Engineering Project SeminarⅠB  

  • 2011   Systems Engineering Project SeminarⅠA  

  • 2011   Systems Engineering Advanced Research  

  • 2011   Systems Engineering Advanced Research  

  • 2011   NA  

  • 2011   NA  

  • 2011   Systems Engineering Advanced Seminar Ⅱ  

  • 2011   Systems Engineering Advanced Seminar Ⅱ  

  • 2011   Systems Engineering Advanced Seminar Ⅰ  

  • 2011   Systems Engineering Advanced Seminar Ⅰ  

  • 2009   NA   Master's Course

  • 2009   NA   Master's Course

  • 2009   NA   Master's Course

  • 2009   NA   Master's Course

  • 2008   NA   Master's Course

  • 2008   NA   Master's Course

  • 2008   NA   Master's Course

  • 2008   NA   Master's Course

  • 2007   NA   Master's Course

  • 2007   NA   Master's Course

  • 2007   NA   Master's Course

  • 2007   NA   Master's Course

▼display all

Research Interests

  • 光物性

  • 材料光学

  • 光計測

  • 光工学

Published Papers

  • Design of Reference Pattern and Input Phase Mask for Coaxial Holographic Memory

    Yusuke Saita, Takanori Nomura, Eiji Nitanai, Takuhisa Numata

    JAPANESE JOURNAL OF APPLIED PHYSICS ( JAPAN SOC APPLIED PHYSICS )  50 ( 9 )   2011.09  [Refereed]

    　View Summary

    Design methods of a reference pattern and an input phase mask for a coaxial holographic memory are described. By the proposed method, it is expected that the useless consumption of the dynamic range of a recording medium will decrease, and the light efficiency and the interference efficiency between the signal beam and the reference beam will be improved. A reference pattern and an input phase mask are designed by a simulated annealing. The performance of the proposed design method is confirmed by numerical simulations and optical experiments. Furthermore, the holographic memory system using both the designed reference pattern and the designed input phase mask is also confirmed by numerical simulations and optical experiments. (C) 2011 The Japan Society of Applied Physics

    DOI

  • Dynamic recording of a digital hologram with single exposure by a wave-splitting phase-shifting method

    Hiroyuki Suzuki, Takanori Nomura, Eiji Nitanai, Takuhisa Numata

    OPTICAL REVIEW ( OPTICAL SOC JAPAN )  17 ( 3 ) 176 - 180   2010.05  [Refereed]

    　View Summary

    The wave-splitting phase-shifting digital holography using a pixelated microretarder array is proposed. By using four intensity images recorded by the pixelated microretarder array, Stokes parameters of the incident wave can be calculated. The fully complex amplitude distribution of the object wave can be obtained by using Stokes parameters, if the polarization states of the object and reference waves are linear and orthogonal. Two sets of experimental results are provided to verify the feasibility of the proposed method. One is the result for a movie recording using a CW laser and the other is the result for instant recording using a single pulsed laser.

    DOI

  • Improvement of viewing-zone angle and image quality of digital holograms

    Takanori Nomura, Yusuke Teranishi, Eiji Nitanai, Takuhisa Numata

    Information Optics and Photonics: Algorithms, Systems, and Applications ( Springer New York )    155 - 161   2010

    　View Summary

    A method to improve the viewing-zone angle and the image quality of a digital hologram is presented. A number of digital holograms of a central object are recorded from the position on the circumference. The holograms are used for a hologram synthesis to improve the image quality from whole viewing-zone angle. The synthesis is achieved by a correlation between a hologram and numerically propagated holograms. The large-sized synthesized digital hologram has a wide viewing-zone angle and less speckles. Some experimental results are shown to confirm our proposed method. © 2010 Springer Science+Business Media, LLC.

    DOI

  • Profilometry and reflectmetry using low-coherent digital holography

    Takanori Nomura, Kohei Yoshino, Takuhisa Numata, Eiji Nitanai

    Optics InfoBase Conference Papers ( Optical Society of America (OSA) )    2010

    　View Summary

    The both profilemotry and reflectmetry of a 3D object by use of digital holography with low coherent light source is proposed. For noise reduction, integration of digital holograms is introduced. © 2010 Optical society of America.

    DOI

  • Quasi-cylindrical digital hologram by superposition of digital holograms recorded on concyclic positions

    Takanori Nomura, Yusuke Teranishi, Eiji Nitanai, Takuhisa Numata

    Optics InfoBase Conference Papers ( Optical Society of America (OSA) )    2009

    　View Summary

    The method to generate a quasi-cylindrical digital hologram is presented. A number of digital holograms of an central object recorded on concyclic positions are used for superposition. The superposition is achieved by numerical propagation of the hologram. Some experimental results are shown to confirm our proposed method. © 2009 Optical society of America.

    DOI

  • Image quality improvement of digital holography by superposition of reconstructed images obtained by multiple wavelengths

    Takanori Nomura, Mitsukiyo Okamura, Eiji Nitanai, Takuhisa Numata

    APPLIED OPTICS ( OPTICAL SOC AMER )  47 ( 19 ) D38 - D43   2008.07  [Refereed]

    　View Summary

    A method to improve the image quality of a digital holographic reconstructed image by means of speckle reduction is proposed. The size and position of the speckles are changed according to the wavelengths to record a digital hologram. By superposing reconstructed images with different wavelengths, the effect of speckle is reduced so that the image quality is improved. Optical experiments are given to confirm the proposed method. (c) 2008 Optical Society of America

    DOI

  • Image quality improvement of digital holography by superposition of reconstructed images obtained by multiple wavelengths

    Takanori Nomura, Mitsukiyo Okamura, Eiji Nitanai, Takuhisa Numata

    Applied Optics   47 ( 19 ) D38   2008  [Refereed]

    DOI

  • Polarization imaging of a 3D object by use of on-axis phase-shifting digital holography

    Takanori Nomura, Bahram Javidi, Shinji Murata, Eiji Nitanai, Takuhisa Numata

    OPTICS LETTERS ( OPTICAL SOC AMER )  32 ( 5 ) 481 - 483   2007.03  [Refereed]

    　View Summary

    A polarimetric imaging method of a 3D object by use of on-axis phase-shifting digital holography is presented. The polarimetric image results from a combination of two kinds of holographic imaging using orthogonal polarized reference waves. Experimental demonstration of a 3D polarimetric imaging is presented. (c) 2007 Optical Society of America.

    DOI

  • Wave-splitting phase-shifting digital holography by use of a retarder array

    Takanori Nomura, Eiji Nitanai, Takuhisa Numata

    2007 IEEE LEOS ANNUAL MEETING CONFERENCE PROCEEDINGS, VOLS 1 AND 2 ( IEEE )    82 - 83   2007  [Refereed]

    　View Summary

    The phase-shifting digital holography by use of a micro-retarder array is proposed. The micro-retarder array consists of four kinds of different directions of fast axes. The combination of the micro-retarder array and a polarizer gives us the four intensity distributions corresponding to the direction of the fast axes. From four intensity images,we can calculate Stokes parameters of the incident wave. Furthermore, we can obtain fully-complex amplitude distribution of the object wave by using Stokes parameters, if the both polarization states of the object wave and the reference wave are linear and they are orthogonal. Some experimental results are given to confirm our proposed recording method.

    DOI

  • Polarimetric Imaging of a three-dimensional object by use of digital holography

    Takanorl Nomura, Bahrain Javidi, Shinji Murata, Eiji Nitanai, Takuhisa Numata

    6TH INTERNATIONAL WORKSHOP ON INFORMATION OPTICS (WIO '07) ( AMER INST PHYSICS )  949   107 - +   2007  [Refereed]

    　View Summary

    A polarimetric imaging method of a 3D object by use of digital holography is presented. The phase-shifitng digital holography using orthogonal polarization is adopted. The polarimetric image results from a combination of two kinds of holographic imaging using orthogonal polarized reference waves. Experimental demonstration of a 3D polarimetric imaging is presented.

  • Phase-shifting digital holography with a phase difference between orthogonal polarizations

    Takanori Nomura, Shinji Murata, Eiji Nitanai, Takuhisa Numata

    APPLIED OPTICS ( OPTICAL SOC AMER )  45 ( 20 ) 4873 - 4877   2006.07  [Refereed]

    　View Summary

    Phase-shifting digital holography with a phase difference between orthogonal polarizations is proposed. The use of orthogonal polarizations can make it possible to record two phase-shifted holograms simultaneously. By combining the holograms with the distributions of a reference wave and an object wave, the complex field of the object's wavefront can be obtained. Preliminary experimental results are shown to confirm the proposed method. (C) 2006 Optical Society of America.

    DOI

  • Design of input phase mask for the space bandwidth of the optical encryption system

    T Nomura, E Nitanai, T Numata, B Javidi

    OPTICAL ENGINEERING ( SPIE-INT SOCIETY OPTICAL ENGINEERING )  45 ( 1 )   2006.01  [Refereed]

    　View Summary

    A method to design an input phase mask for double-random phase-encoding optical encryption is proposed. The input phase mask is iteratively designed so that the extent of the Fourier spectrum of the product of an input image and the input phase mask correspond to the space bandwidth of the optical system. By using the designed input phase mask, we show that the bit-error rate is improved. We also discuss the number of phase levels of the designed input phase mask. (c) 2006 Society of Photo-Optical Instrumentation Engineers.

    DOI

  • One-shot digital holography by use of polarization

    Takanori Nomura, Bahram Javidi, Shinji Murata, Eiji Nitanai, Takuhisa Numata

    OPTICAL INFORMATION SYSTEMS IV ( SPIE-INT SOC OPTICAL ENGINEERING )  6311   2006  [Refereed]

    　View Summary

    The one-shot phase-shifting digital holography using phase difference of orthogonal polarizations is proposed. Using a CCD camera with pixelated polarizers, three images for phase analysis can be obtained simultaneously. The proposed method can be applied to a moving object, because a complex field of the wavefront of a 3D object can be obtained in a single exposure.

    DOI

  • Speckles removal in digital holography using multiple wavelengths/distances from an object

    Takanori Nomura, Mitsukiyo Okamura, Eiji Nitanai, Takuhisa Numata

    2006 IEEE LEOS ANNUAL MEETING CONFERENCE PROCEEDINGS, VOLS 1 AND 2 ( IEEE )    74 - +   2006  [Refereed]

    　View Summary

    The method to reduce speckles in a reconstructed image of a digital hologram is proposed. The size and position of the speckles are changed according to both the wavelengths to be recorded and the distances from the object the hologram. The superposition of the reconstructed images recorded with different wavelength/distance holograms gives the image with reduced speckles.

    DOI

  • Optical encryption using an input phase mask designed for the space bandwidth of the optical system

    T Nomura, T Fujita, E Nitanai, T Numata, B Javidi

    2004 IEEE LEOS ANNUAL MEETING CONFERENCE PROCEEDINGS, VOLS 1 AND 2 ( IEEE )    344 - 345   2004  [Refereed]

    　View Summary

    The method to design an input phase mask for the double-random phase-encoding optical encryption is proposed. The input phase;mask is designed so that the extend of the Fourier spectrum of the product of an input image and the input phase mask corresponds to the space bandwidth of the optical system. By using the designed input phase mask, we show that the bit-error rate is improved.

  • Irradiation-dependent saturable absorption properties in dye-doped polyvinyl alcohol films exposed to a highly humid atmosphere

    E Nitanai, S Miyanaga （Part： Lead author )

    OPTICAL REVIEW ( OPTICAL SOC JAPAN )  5 ( 1 ) 43 - 47   1998.01  [Refereed]

    　View Summary

    Effects of humidity on nonlinear transmission properties due to saturable absorption were investigated using eosin-Y-doped polyvinyl alcohol (PVA) films which had been exposed to a highly humid atmosphere. In a pump-probe measurement, a transmitted probe signal changed in every shot of the pump-pulse irradiation, and tended to approach a steady characteristic. Simultaneous measurements of the transmitted probe power and the phosphorescent lifetime showed that these phenomena stem from the phosphorescent lifetime being lengthened by the successive pump irradiations. This increase in lifetime was found to have originated from reduction of a nonradiative decay rate of an excited state of the dyes. The recurrent pump irradiations are believed to remove moisture, which has strengthened the nonradiative decay rate, from the PVA films.

    DOI

  • Measurements of dispersion properties of refractive indices and absorption coefficients in organic-dye-doped thin films by a prism-coupling method

    E Nitanai, S Miyanaga （Part： Lead author )

    OPTICAL ENGINEERING ( SOC PHOTO-OPT INSTRUM ENG )  35 ( 3 ) 900 - 903   1996.03  [Refereed]

    　View Summary

    Refractive indices and thicknesses of organic-dye-doped thin films are measured by a prism-coupling method. Anomalous dispersion of refractive indices which is caused by absorption of dyes, can be observed. The measured film thicknesses are used to determine the absorption coefficients of those films together with transmission measurements. In a highly absorptive wavelength region, the accuracy of measurements is decreased as a consequence of the broadening of m line corresponding to each guided mode. From the measurements in eosin-Y-doped polymer films, it is found that this method is not available when transmission is less than about 80%. (C) 1996 Society of Photo-Optical Instrumentation Engineers.

    DOI

▼display all

Misc

  • Digital Holography Using Wavefront-Splitting Phase-Shifting Method

    NOMURA Takanori, MURATA Shinji, YONEYAMA Satoru, NITANAI Eiji, NUMATA Takuhisa

    The Review of laser engineering ( レ-ザ-学会 )  35 ( 6 ) 363 - 367   2007.06

  • Light Scattering by Magnetic Colloid under Magnetic Field

    MAEKITA Akihisa, NITANAI Eiji, NOMURA Takanori, NUMATA Takuhisa

    電気学会研究会資料. MAG, マグネティックス研究会   2005 ( 24 ) 31 - 36   2005.06

  • Quasi one-shot phase-shifting digital holography

    Takanori Nomura, Shinji Murata, Eiji Nitanai, Takuhisa Numata

    Proceedings of SPIE - The International Society for Optical Engineering   6016   2005

    　View Summary

    The quasi one-shot phase-shifting digital holography using phase difference of orthogonal polarizations is proposed. The use of orthogonal polarizations can make it possible to record two phase-shifted holograms simultaneously. By combining the holograms with distributions of a reference wave and an object wave, the complex field of the wavefront of a 3D object can be obtained. As two phase-shifted holograms can be obtained simultaneously in the proposed method, even a moving object can be recorded.

    DOI

Conference Activities & Talks

  • 2種類の近赤外LEDを用いた食品中の異物検出法の検討

    山下尚峻, 似内映之

    第35回近赤外フォーラム  2019.11  

  • 低コヒーレンス干渉法とクラマース-クローニッヒの関係式を用いた薄板ガラスの位相屈折率測定

    島慧一郎, 似内映之

    Optics & Photonics Japan 2018 日本光学会年次学術講演会  2018.11  

  • 2種類の近赤外LEDを用いた梅干し内部の異物検出法の検討

    山下尚峻, 似内映之

    WAKASA 和歌山大学システム工学部・近畿大学生物理工学部学生研究成果発表会  2018.03  

Research Exchange

  • 第41回冬期講習会

    2015.01
     

  • 日本光学会年次学術講演会 Optics & Photonics Japan 2014

    2014.11
     

  • 第75回応用物理学会秋季学術講演会

    2014.09
     

  • 日本光学会年次学術講演会 Optics & Photonics Japan 2013

    2013.11
     

  • 第74回応用物理学会秋季学術講演会

    2013.09
     

  • 日本光学会年次学術講演会 Optics & Photonics Japan 2012

    2012.10
     

  • 第73回応用物理学会学術講演会

    2012.09
     

  • 2012年春季第59回応用物理学関連連合講演会

    2012.03
     

  • 日本光学会年次学術講演会 OPTICS & PHOTONICS JAPAN 2011

    2011.11
     

  • 日本光学会年次学術講演会 OPTICS & PHOTONICS JAPAN 2010 in TOKYO

    2010.11
     

  • 2010年春季第57回応用物理学関連連合講演会

    2010.03
     

  • レーザー学会学術講演会第30回年次大会

    2010.02
     

  • 日本光学会年次学術講演会 OPTICS & PHOTONICS JAPAN 2009 in 新潟

    2009.11
     

  • International Topical Meeting on Information Photonics 2008

    2008.11
     

  • 日本光学会年次学術講演会 OPTICS & PHOTONICS JAPAN 2008

    2008.11
     

  • 2008年秋季第69回応用物理学会学術講演会

    2008.09
     

  • 2008年春季第55回応用物理学関連連合講演会

    2008.03
     

  • 日本光学会年次学術講演会 OPTICS & PHOTONICS JAPAN 2007　IN OSAKA

    2007.11
     

  • 2008年春季第54回応用物理学関連連合講演会

    2007.03
     

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KAKENHI

  • 電子ホログラフィを用いた３ＤストレスフリーなＨＭＤの開発

    2016.04
    -
    2020.03
     

    Grant-in-Aid for Scientific Research(B)  Co-investigator

  • 脆弱な瓦礫上での脚歩行ロボットによる足探りに関する研究

    2011.04
    -
    2014.03
     

    Grant-in-Aid for Scientific Research(C)  Co-investigator

  • 波面符号化並列位相シフト法による瞬時複素振幅情報取得に関する研究

    2011.04
    -
    2014.03
     

    Grant-in-Aid for Scientific Research(C)  Co-investigator

  • ワンショット位相シフト法を用いたディジタルホログラフィの開発

    2006.04
    -
    2008.03
     

    Grant-in-Aid for Scientific Research(C)  Co-investigator

Joint or Subcontracted Research with foundation, company, etc.

  • 「ビヨンド・”ゼロ・カーボン”を目指す”Co-JUNKAN”プラットフォーム」研究拠点に関する国立大学法人和歌山大学による研究開発

    2022.04
    -
    2026.03
     

    Contracted research  Co-investigator

Instructor for open lecture, peer review for academic journal, media appearances, etc.

  • 紀陽イノベーションサポートプログラム評価委員会委員

    2023.11.02
    -
    2024.03.31

    株式会社紀陽銀行

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    「学協会、政府、自治体等の公的委員」以外の委員

    職　　名　紀陽イノベーションサポートプログラム評価委員
    内　　容　研究開発テーマにかかる評価
    期　　間　応諾日～２０２４年３月３１日
    依頼回数　応募申請書による書面評価（１５～２０社程度）
    　　　　　プレゼンテーション：期間中1回（８時間程度）
    謝礼等　　書面評価：１案件４，０００円（最大４０，０００円）
    　　　　　プレゼンテーション評価：１０，０００円
    旅　　費　謝金に含む

  • 紀陽イノベーションサポートプログラム　評価委員

    2021.01.01
    -
    2024.03.31

    株式会社紀陽銀行

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    助言・指導

    一般事業会社を中心として事業体からのビジネスプランについて
    審査を行っていただきます。
    一次審査：書類審査（15～20社）※集合はなし
    二次審査：プレゼンテーション審査（8社程度）1日

  • 紀陽イノベーションサポートプログラム　評価委員

    2020.01.01
    -
    2020.03.31

    株式会社紀陽銀行

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    助言・指導

    一般事業会社を中心として事業体からのビジネスプランについて
    審査を行っていただきます。
    一次審査：書類審査（15～20社）※集合はなし
    二次審査：プレゼンテーション審査（8社程度）1日

  • 青少年のための科学の祭典・2010おもしろ科学まつり和歌山大会

    2010.04

    青少年のための科学の祭典・2009おもしろ科学まつり和歌山大会実行委員会

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    公開講座・講演会の企画・講師等

    めっきで絵を描こう,日付:2010.12

Committee member history in academic associations, government agencies, municipalities, etc.

  • わかやま産品販促支援事業および経営支援等補助金審査委員

    2022.04.01
    -
    2024.03.31
     

    公益財団法人わかやま産業振興財団

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    学協会、政府、自治体等の公的委員

    各事業における採択企業の決定

  • 和歌山県商工観光労働部所管公募型プロポーザル方式等事業者選定委員会委員

    2021.05.20
    -
    2021.06.30
     

    和歌山県

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    学協会、政府、自治体等の公的委員

    和歌山県アクセラレーションプログラムの実施事業者選定に当たり、専門的知見を活かし候補者の提案内容を審査いただく。

  • わかやま産品販促支援事業審査委員

    2021.04.01
    -
    2022.03.31
     

    公益財団法人わかやま産業振興財団

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    学協会、政府、自治体等の公的委員

    令和３年度わかやま産品販促支援事業の補助金申請者に対する審査を行う。

  • 和歌山県商工観光労働部所管公募型プロポーザル方式等事業者選定委員会委員

    2020.05.20
    -
    2021.03.31
     

    和歌山県

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    学協会、政府、自治体等の公的委員

    和歌山県商工観光労働部所管公募型プロポーザル方式等事業者選定委員会委員に就任し、専門的立場から意見をいただく。

  • 経営支援等補助金審査会審査委員

    2020.04.01
    -
    2021.03.31
     

    公益財団法人わかやま産業振興財団

    　View Details

    学協会、政府、自治体等の公的委員

    和歌山県の令和2年度経営支援等補助金審査会の審査委員として依頼

  • わかやま産品販促支援事業審査委員

    2020.04.01
    -
    2021.03.31
     

    公益財団法人わかやま産業振興財団

    　View Details

    学協会、政府、自治体等の公的委員

    令和2年度わかやま産品販促支援事業の補助金申請者に対する審査を行う。

  • 評価委員

    2019.12
    -
    2020.03
     

    紀陽イノベーションサポートプログラム

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    国や地方自治体、他大学・研究機関等での委員

    評価委員,任期:2019年12月～2020年3月

  • 委員

    2019.04
    -
    2020.03
     

    和歌山県商工観光労働部所管公募型プロポーザル方式等事業者選定委員会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2019年4月～2020年3月

  • 委員

    2019.04
    -
    2020.03
     

    平成31年度わかやま産品販促支援事業審査委員会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2019年4月～2020年3月

  • 審査委員

    2019.04
    -
    2020.03
     

    公益財団法人わかやま産業振興財団　平成31年度経営支援等補助金審査会

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    国や地方自治体、他大学・研究機関等での委員

    審査委員,任期:2019年4月～2020年3月

  • 評価委員

    2018.12
    -
    2019.03
     

    紀陽イノベーションサポートプログラム

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    国や地方自治体、他大学・研究機関等での委員

    評価委員,任期:2018年12月～2019年3月

  • 専門委員

    2018.04
    -
    2020.03
     

    研究成果最適展開支援プログラム（A-STEP）機能検証フェーズ

    　View Details

    国や地方自治体、他大学・研究機関等での委員

    専門委員,任期:2018年4月～2020年3月

  • 委員

    2018.04
    -
    2020.03
     

    「産学連携ジャーナル」編集委員会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2018年4月～2020年3月

  • 審査委員

    2018.04
    -
    2019.03
     

    平成30年度経営支援等補助金審査会

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    国や地方自治体、他大学・研究機関等での委員

    審査委員,任期:2018年4月～2019年3月

  • イノベーションプロデューサー

    2018.04
    -
    2019.03
     

    公益財団法人わかやま産業振興財団

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    国や地方自治体、他大学・研究機関等での委員

    イノベーションプロデューサー,任期:2018年4月～2019年3月

  • 審査委員

    2018.04
    -
    2019.03
     

    公益財団法人わかやま産業振興財団平成30年度審査会

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    国や地方自治体、他大学・研究機関等での委員

    審査委員,任期:2018年4月～2019年3月

  • 委員

    2016.04
    -
    2019.03
     

    和歌山県中小企業事業計画評価委員会

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2016年4月-2019年3月

  • 委員

    2016.04
    -
    2017.03
     

    （公財）わかやま産業振興財団平成２８年度審査委員

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    国や地方自治体、他大学・研究機関等での委員

    委員,任期:2016年4月-2017年3月

  • 現地実行委員

    2013.04
    -
    2013.10
     

    OPTICS & PHOTONICS JAPAN 2013

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    学協会、政府、自治体等の公的委員

    学協会、政府、自治体等の公的委員,任期:2013.4～2013.10

  • 関西地区幹事

    2011.04
    -
    2013.03
     

    日本光学会

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    学協会、政府、自治体等の公的委員

    学協会、政府、自治体等の公的委員,任期:2011.4～2013.3

  • 現地実行委員

    2011.04
    -
    2011.11
     

    OPTICS & PHOTONICS JAPAN 2011

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    学協会、政府、自治体等の公的委員

    学協会、政府、自治体等の公的委員,任期:2011.4～2011.11

  • 編集委員

    2010.02
    -
    2010.04
     

    レーザー学会学術講演会

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    学協会、政府、自治体等の公的委員

    学協会、政府、自治体等の公的委員,任期:2010.2～2009.4

  • 現地実行委員

    2007.11
    -
    2008.11
     

    INFORMATION OPTICS 2008

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    学協会、政府、自治体等の公的委員

    学協会、政府、自治体等の公的委員,任期:2007.11～2008.11

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Other Social Activities

  • わかやまテクノ・ビジネスフェアにおける研究シーズ発表

    2023.11.29

    公益財団法人わかやま産業振興財団

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    イノベーションイニシアティブ基幹について

    イノベーションイニシアティブ基幹を紹介する講演を行った

  • 国立大学法人共同研究センター等教員会議 近畿・中国ブロック幹事

    2023.04.01
    -
    2024.03.31

    国立大学法人共同研究センター等教員会議

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    産学連携

    会議の開催校として企画運営進行など会議にかかわる全般

  • 和歌山情報サービス産業協会でのパネリスト

    2023.01.25

    和歌山情報サービス産業協会（WAKASA）

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    産学連携

    産学連携従事者の立場からの発言を期待されたパネリスト

  • Wakayama T&M での産学連携イノベーションセンターの活動紹介

    2022.06.16

    Wakayama T&M

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    産学連携

    招待を受け本学の概要や産学連携イノベーションセンターの活動を紹介した

  • わかやまテクノ・ビジネスフェアにおける研究シーズ発表

    2020.11.25

    公益財団法人わかやま産業振興財団

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    近赤外透過画像を用いた食品内部の異物検出に関する研究

    自らの研究シーズの発表を行った

  • 研究トピックス(一般誌記事)

    2009.03

    その他

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    社会との連携を推進する活動

    似内映之 螢雪時代4月臨時増刊「学部・学科案内号」

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