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Miyamaru Fumiaki|Shinshu University Researcher List

Miyamaru Fumiaki

Academic Assembly School of Science and Technology Institute of Science

Professor 

Researcher Information

Field Of Study

  • 光物性,テラヘルツ波光学,赤外分光
Research activity information

Paper

  • Broadband and efficient terahertz helicity inversion by a reconfigurable reflective metasurface based on vanadium dioxide
    Akira Inokuma, Keisuke Takano, Toshihiro Nakanishi, Fumiaki Miyamaru, Kunio Okimura, Atsushi Sanada, and Yosuke Nakata
    Applied Physics Letters, 125, 081703, Aug. 2024電子ジャーナル
  • Frequency down-conversion of terahertz waves at optically induced temporal boundaries in GaAs waveguides
    Keisuke Takano, Satoko Uchiyama, Shintaro Nagase, Yuka Tsuchimoto, Toshihiro Nakanishi, Yosuke Nakata, Joel Pérez-Urquizo, Julien Madéo, Keshav M. Dani and Fumiaki Miyamaru
    Nanophotonics, 13(17), 3077-3089, May 2024電子ジャーナル
  • Attenuation management in terahertz frequency conversion with temporal boundary using a metallic structure
    Fumiaki Miyamaru; Miki Amaki; Keisuke Takano; Joel Pérez-Urquizo; Julien Madéo; Keshav M. Dani; Yosuke Nakata; Toshihiro Nakanishi
    Physical Review Applied, 21(4), 044044, Apr. 2024リポジトリ電子ジャーナル
  • Hidden symmetry protection for surface plasmon polaritons
    Yosuke Nakata; Toshihiro Nakanishi; Ryo Takahashi; Fumiaki Miyamaru; Shuichi Murakami
    Physical Review Research, 5, L042027, Nov. 2023リポジトリ電子ジャーナル
  • Bulk-edge correspondences for surface plasmon polaritons: A circuit approach
    Yosuke Nakata; Toshihiro Nakanishi; Ryo Takahashi; Fumiaki Miyamaru; Shuichi Murakami
    Physical Review B, 108, 174105, Nov. 2023リポジトリ電子ジャーナル
  • Dynamic inversion of planar-chiral response of terahertz metasurface based on critical transition of checkerboard structures
    Yoshiro Urade; Kai Fukawa; Fumiaki Miyamaru; Kunio Okimura; Toshihiro Nakanishi; Yosuke Nakata
    Nanophotonics, 11(9), 2057, Jan. 2022リポジトリ電子ジャーナル
  • Dynamic Quarter‐Wave Metasurface for Efficient Helicity Inversion of Polarization Beyond the Single‐Layer Conversion Limit
    Mitsuki Kobachi; Fumiaki Miyamaru; Toshihiro Nakanishi; Kunio Okimura; Atsushi Sanada; Yosuke Nakata
    Advanced Optical Materials, 10(2), 2101615, Nov. 2021リポジトリ電子ジャーナル
  • Ultrafast Frequency-Shift Dynamics at Temporal Boundary Induced by Structural-Dispersion Switching of Waveguides
    Fumiaki Miyamaru; Chihiro Mizuo; Toshihiro Nakanishi; Yosuke Nakata; Kakeru Hasebe; Shintaro Nagase; Yu Matsubara; Yusuke Goto; Joel Pérez-Urquizo; julien madeo; Keshav Dani
    Physical Review Letters, 127, 053902, Jul. 2021リポジトリ電子ジャーナル
  • Spatial Field Distributions of Electromagnetic Waves in Coupled System of One-Dimensional Photonic Crystals
    Hideaki Kitahara; Yosuke Nakata; Youhei Suzuki; Junichi Miyashita; Fumiaki Miyamaru; Mitsuo Wada Takeda
    Journal of the Physical Society of Japan, 90(4), 044708-044708, Apr. 2021リポジトリ電子ジャーナル
  • Reconfigurable Terahertz Quarter-Wave Plate for Helicity Switching Based on Babinet Inversion of an Anisotropic Checkerboard Metasurface
    Yosuke Nakata; Kai Fukawa; Toshihiro Nakanishi; Yoshiro Urade; Kunio Okimura; Fumiaki Miyamaru
    Physical Review Applied, 11(4), 044008, Apr. 2019リポジトリ電子ジャーナル
  • Energy loss of terahertz electromagnetic waves by nano-sized connections in near-self-complementary metallic checkerboard patterns
    Keisuke Takano; Yoku Tanaka; Gabriel Moreno; Abdallah Chahadih; Abbas Ghaddar; Xiang-Lei Han; François Vaurette; Yosuke Nakata; Fumiaki Miyamaru; Makoto Nakajima; Masanori Hangyo; Tahsin Akalin
    Journal of Applied Physics, 122, 063101, Aug. 2017リポジトリ電子ジャーナル
  • Freestanding transparent terahertz half-wave plate using subwavelength cut-wire pairs
    Yosuke Nakata; Yudai Taira; Toshihiro Nakanishi; Fumiaki Miyamaru
    Optics Express, 25(3), 2107-2107, Jan. 2017リポジトリ電子ジャーナル
  • Anisotropic Babinet-Invertible Metasurfaces to Realize Transmission-Reflection Switching for Orthogonal Polarizations of Light
    Yosuke Nakata; Yoshiro Urade; Kunio Okimura; Toshihiro Nakanishi; Fumiaki Miyamaru; Mitsuo Wada Takeda; Masao Kitano
    Physical Review Applied, 6(4), 044022, Oct. 2016リポジトリ電子ジャーナル
  • Supersymmetric correspondence in spectra on a graph and its line graph: From circuit theory to spoof plasmons on metallic lattices
    Yosuke Nakata; Yoshiro Urade; Toshihiro Nakanishi; Fumiaki Miyamaru; Mitsuo Wada Takeda; Masao Kitano
    Physical Review A, 93(4), 043853, Apr. 2016リポジトリ電子ジャーナル
  • Dynamically Babinet-invertible metasurface: a capacitive-inductive reconfigurable filter for terahertz waves using vanadium-dioxide metal-insulator transition
    Yoshiro Urade; Yosuke Nakata; Kunio Okimura; Toshihiro Nakanishi; Fumiaki Miyamaru; Mitsuo W. Takeda; Masao Kitano
    Optics Express, 24(5), 4405-4405, Feb. 2016リポジトリ電子ジャーナル
  • Observation of Fano resonance using a coupled resonator metamaterial composed of meta-atoms arranged by double periodicity
    Tsubasa Nishida; Yosuke Nakata; Fumiaki Miyamaru; Toshihiro Nakanishi; Mitsuo W. Takeda
    Applied Physics Express, 9(1), 012201-012201, Dec. 2015リポジトリ電子ジャーナル
  • Trapping waves with terahertz metamaterial absorber based on isotropic Mie resonators
    Riad Yahiaoui; Kenichiro Hanai; Keisuke Takano; Tsubasa Nishida; Fumiaki Miyamaru; Makoto Nakajima; Masanori Hangyo
    Optics Letters, 40(13), 3197-3197, Jun. 2015リポジトリ電子ジャーナル
  • Crossover from capacitive to inductive electromagnetic responses in near self-complementary metallic checkerboard patterns
    Keisuke Takano; Fumiaki Miyamaru; Koichi Akiyama; Hiroshi Miyazaki; Mitsuo W. Takeda; Yuji Abe; Yasunori Tokuda; Hiromasa Ito; Masanori Hangyo
    Optics Express, 22(20), 24787-24787, Oct. 2014リポジトリ電子ジャーナル
  • Terahertz metamolecules deposited on thin flexible polymer: design, fabrication and experimental characterization
    R Yahiaoui; K Takano; F Miyamaru; M Hangyo; P Mounaix
    Journal of Optics, 16(9), 094014-094014, Sep. 2014リポジトリ電子ジャーナル
  • Ultrafast optical control of group delay of narrow-band terahertz waves
    Fumiaki Miyamaru; Hiroki Morita; Yohei Nishiyama; Tsubasa Nishida; Toshihiro Nakanishi; Masao Kitano; Mitsuo W. Takeda
    Scientific Reports, 4(1), 4346, Mar. 2014リポジトリ電子ジャーナル
  • Highly Sensitive Terahertz Sensing of Glycerol-Water Mixtures with Metamaterials
    F. Miyamaru; K. Hattori; K. Shiraga; S. Kawashima; S. Suga; T. Nishida; M. W. Takeda; Y. Ogawa
    Journal of Infrared, Millimeter, and Terahertz Waves, 35, 198, Feb. 2014リポジトリ電子ジャーナル
  • Analysis and design of concave lens with metallic slit array for terahertz wave band
    Takehito Suzuki; Hiroki Yonamine; Takuya Konno; John C. Young; Kotaro Murai; Fumiaki Miyamaru; Keisuke Takano; Hideaki Kitahara; Masanori Hangyo
    Applied Physics A, 115(2), 495, Nov. 2013リポジトリ電子ジャーナル
  • Fabrication and Performance of $\hbox{TiO}_{2}$-Ceramic-Based Metamaterials for Terahertz Frequency Range
    Keisuke Takano; Yuya Yakiyama; Kyoji Shibuya; Keita Izumi; Hiroshi Miyazaki; Yoji Jimba; Fumiaki Miyamaru; Hideaki Kitahara; Masanori Hangyo
    IEEE Transactions on Terahertz Science and Technology, 3, 812, Nov. 2013リポジトリ電子ジャーナル
  • Saturation and Polarization Characteristics of 1.56 μm Optical Probe Pulses in a LTG-GaAs Photoconductive Antenna Terahertz Detector
    Elmer S. Estacio; Masakazu Hibi; Katsuya Saito; Christopher T. Que; Takashi Furuya; Fumiaki Miyamaru; Seizi Nishizawa; Kohji Yamamoto; Masahiko Tani
    Journal of Infrared, Millimeter, and Terahertz Waves, 34, 423, Aug. 2013リポジトリ電子ジャーナル
  • Fast-Scan Terahertz Time Domain Spectrometer Based on Laser Repetition Frequency Modulation
    Takashi Furuya; Elmer S. Estacio; Kazuki Horita; Christopher T. Que; Kohji Yamamoto; Fumiaki Miyamaru; Seizi Nishizawa; Masahiko Tani
    Japanese Journal of Applied Physics, 52(2R), 022401-022401, Jan. 2013リポジトリ電子ジャーナル
  • Transmission properties of double-gap asymmetric split ring resonators in terahertz region
    F. Miyamaru; S. Kubota; T. Nakanishi; S. Kawashima; N. Sato; M. Kitano; M. W. Takeda
    Applied Physics Letters, 101(5), 051112-051112, Jul. 2012リポジトリ電子ジャーナル
  • Terahertz Response of Split-Ring Resonators with Fractal Structures
    Fumiaki Miyamaru; Shiro Kubota; Mitsuo Wada Takeda
    Applied Physics Express, 5(7), 072001-072001, Jun. 2012リポジトリ電子ジャーナル
  • Photoconductive Emission and Detection of Terahertz Pulsed Radiation Using Semiconductors and Semiconductor Devices
    Masahiko Tani; Kohji Yamamoto; Elmer S. Estacio; Christopher T. Que; Hidekazu Nakajima; Masakazu Hibi; Fumiaki Miyamaru; Seizi Nishizawa; Masanori Hangyo
    Journal of Infrared, Millimeter, and Terahertz Waves, 33, 393, Apr. 2012リポジトリ電子ジャーナル
  • Controlling extraordinary transmission characteristics of metal hole arrays with spoof surface plasmons
    Fumiaki Miyamaru; Mototsugu Kamijyo; Naoki Hanaoka; Mitsuo W. Takeda
    Applied Physics Letters, 100(8), 081112, Feb. 2012リポジトリ電子ジャーナル
  • Optical switching of terahertz radiation from meta-atom-loaded photoconductive antennas
    Keisuke Takano; Yui Chiyoda; Tsubasa Nishida; Fumiaki Miyamaru; Taku Kawabata; Hirofumi Sasaki; Mitsuo W. Takeda; Masanori Hangyo
    Applied Physics Letters, 99(16), 161114, Oct. 2011リポジトリ電子ジャーナル
  • Fano effect of metamaterial resonance in terahertz extraordinary transmission
    Xiao Xiao; Jinbo Wu; Fumiaki Miyamaru; Mengying Zhang; Shunbo Li; Mitsuo W. Takeda; Weijia Wen; Ping Sheng
    Applied Physics Letters, 98(1), 011911, Jan. 2011リポジトリ電子ジャーナル
  • Single-phase electrorheological effect in microgravity
    Guoqing Zhao; Shuyu Chen; Weijia Wen; Fumiaki Miyamaru; Mitsuo W. Takeda; Jianding Yu; Ping Sheng
    Soft Matter, 7(16), 7198-7198, 2011リポジトリ電子ジャーナル
  • Resonant terahertz transmissions through metal hole array on silicon substrate
    Xiao Xiao; Wu Jinbo; Yuki Sasagawa; Fumiaki Miyamaru; Mengying Zhang; Mitsuo W. Takeda; Chunyin Qiu; Weijia Wen; Ping Sheng
    Optics Express, 18(18), 18558-18558, Aug. 2010リポジトリ電子ジャーナル
  • Characteristics and generation process of surface waves excited on a perfect conductor surface
    Fumiaki Miyamaru; Mototsugu Kamijyo; Keisuke Takano; Masanori Hangyo; Hiroshi Miyazaki; Mitsuo Wada Takeda
    Optics Express, 18(16), 17576-17576, Jul. 2010リポジトリ電子ジャーナル
  • Characteristics of Terahertz Radiation Emitted From Fractal Photoconductive Antennas
    Fumiaki Miyamaru; Yu Saito; Mitsuo Wada Takeda; Bo Hou; Weijia Wen; Ping Sheng
    Japanese Journal of Applied Physics, 49(7R), 070205-070205, Jul. 2010リポジトリ電子ジャーナル
  • Dependence of emission of terahertz radiation on geometrical parameters of dipole photoconductive antennas
    Fumiaki Miyamaru; Yu Saito; Kohji Yamamoto; Takashi Furuya; Seizi Nishizawa; Masahiko Tani
    Applied Physics Letters, 96(21), 211104, May 2010リポジトリ電子ジャーナル
  • Three-dimensional bulk metamaterials operating in the terahertz range
    Fumiaki Miyamaru; Shiro Kuboda; Kazuo Taima; Keisuke Takano; Masanori Hangyo; Mitsuo Wada Takeda
    Applied Physics Letters, 96(8), 81105, Feb. 2010リポジトリ電子ジャーナル
  • A metal-to-insulator transition in cut-wire-grid metamaterials in the terahertz region
    Keisuke Takano; Kyoji Shibuya; Koichi Akiyama; Takeshi Nagashima; Fumiaki Miyamaru; Masanori Hangyo
    Journal of Applied Physics, 107(2), 24907, Jan. 2010リポジトリ電子ジャーナル
  • Effect of dielectric thin films on reflection properties of metal hole arrays
    Fumiaki Miyamaru; Yuki Sasagawa; Mitsuo Wada Takeda
    Applied Physics Letters, 96(2), 21106, Jan. 2010リポジトリ電子ジャーナル
  • Fabrication of Terahertz Planar Metamaterials Using a Super-Fine Ink-Jet Printer
    Keisuke Takano; Taku Kawabata; Cho-Fan Hsieh; Koichi Akiyama; Fumiaki Miyamaru; Yuji Abe; Yasunori Tokuda; Ru-Pin Pan; Ci-Ling Pan; Masanori Hangyo
    Applied Physics Express, 3, 16701, Jan. 2010リポジトリ電子ジャーナル
  • Emission of terahertz radiations from fractal antennas
    F. Miyamaru; Y. Saito; M. W. Takeda; L. Liu; B. Hou; W. Wen; Ping Sheng
    Applied Physics Letters, 95(22), 221111, Nov. 2009リポジトリ電子ジャーナル
  • Coupling between localized resonance and excitation of surface waves in metal hole arrays
    Fumiaki Miyamaru; Mitsuo Wada Takeda
    Physical Review B, 79(15), 153405, Apr. 2009リポジトリ電子ジャーナル
  • Terahertz pulsed imaging of frozen biological tissues
    Hiromichi Hoshina; Aya Hayashi; Norio Miyoshi; Fumiaki Miyamaru; Chiko Otani
    Applied Physics Letters, 94(12), 123901, Mar. 2009リポジトリ電子ジャーナル
  • Characterization of Terahertz Metamaterials Fabricated on Flexible Plastic Films: Toward Fabrication of Bulk Metamaterials in Terahertz Region
    Fumiaki Miyamaru; Mitsuo Wada Takeda; Kazuo Taima
    Applied Physics Express, 2, 042001-042001, Mar. 2009リポジトリ電子ジャーナル
  • Terahertz electric response of fractal metamaterial structures
    F. Miyamaru; Y. Saito; M. W. Takeda; B. Hou; L. Liu; W. Wen; P. Sheng
    Physical Review B, 77(4), 45124, Jan. 2008リポジトリ電子ジャーナル
  • Terahertz sensing method for protein detection using a thin metallic mesh
    H. Yoshida; Y. Ogawa; Y. Kawai; S. Hayashi; A. Hayashi; C. Otani; E. Kato; F. Miyamaru; K. Kawase
    Applied Physics Letters, 91(25), 253901, Dec. 2007リポジトリ電子ジャーナル
  • Temporal Rectification Response of an Asymmetric Photoconductive Antenna with Schottky Contact
    Christopher T. Que; Fumiaki Miyamaru; Shigehisa Tanaka; Masahiko Tani; Masanori Hangyo
    Japanese Journal of Applied Physics, 46(2R), 597-597, Feb. 2007リポジトリ電子ジャーナル
  • Highly sensitive surface plasmon terahertz imaging with planar plasmonic crystals
    F. Miyamaru; M. W. Takeda; T. Suzuki; C. Otani
    Optics Express, 15(22), 14804-14804, 2007リポジトリ電子ジャーナル
  • Strong optical activity in chiral metamaterials of metal screw hole arrays
    Fumiaki Miyamaru; Masanori Hangyo
    Applied Physics Letters, 89(21), 211105, Nov. 2006リポジトリ電子ジャーナル
  • Effect of hole diameter on terahertz surface-wave excitation in metal-hole arrays
    Fumiaki Miyamaru; Masaki Tanaka; Masanori Hangyo
    Physical Review B, 74(15), 153416, Oct. 2006リポジトリ電子ジャーナル
  • Resonant electromagnetic wave transmission through strontium titanate hole arrays with complex surface waves
    Fumiaki Miyamaru; Masaki Tanaka; Masanori Hangyo
    Physical Review B, 74(11), 115117, Sep. 2006リポジトリ電子ジャーナル
  • Transmission Characteristics through Two-Dimensional Periodic Hole Arrays Perforated in Perfect Conductors
    Takeshi Tanaka; Masamichi Akazawa; Eiichi Sano; Masaki Tanaka; Fumiaki Miyamaru; Masanori Hangyo
    Japanese Journal of Applied Physics, 45(5R), 4058-4058, May 2006リポジトリ電子ジャーナル
  • Terahertz surface-wave resonant sensor with a metal hole array
    F. Miyamaru; S. Hayashi; C. Otani; K. Kawase; Y. Ogawa; H. Yoshida; E. Kato
    Optics Letters, 31(8), 1118-1118, Apr. 2006リポジトリ電子ジャーナル
  • Slab-thickness dependence of polarization change of terahertz waves transmitted through metal hole arrays
    Fumiaki Miyamaru; Masanori Hangyo
    Journal of Applied Physics, 99(1), 16105, Jan. 2006リポジトリ電子ジャーナル
  • Strong enhancement of terahertz transmission for a three-layer heterostructure of metal hole arrays
    Fumiaki Miyamaru; Masanori Hangyo
    Physical Review B, 72(3), 35429, Jul. 2005リポジトリ電子ジャーナル
  • Effect of a thin dielectric layer on terahertz transmission characteristics for metal hole arrays
    Masaki Tanaka; Fumiaki Miyamaru; Masanori Hangyo; Takeshi Tanaka; Masamichi Akazawa; Eiichi Sano
    Optics Letters, 30(10), 1210-1210, May 2005リポジトリ電子ジャーナル
  • Anomalous terahertz transmission through double-layer metal hole arrays by coupling of surface plasmon polaritons
    Fumiaki Miyamaru; Masanori Hangyo
    Physical Review B, 71(16), 165408, Apr. 2005リポジトリ電子ジャーナル
  • Terahertz absorption spectra of L-, D-, and DL-alanine and their application to determination of enantiometric composition
    Mariko Yamaguchi; Fumiaki Miyamaru; Kohji Yamamoto; Masahiko Tani; Masanori Hangyo
    Applied Physics Letters, 86, 53903, Jan. 2005リポジトリ電子ジャーナル
  • Control of enhanced THz transmission through metallic hole arrays using nematic liquid crystal
    Ci-Ling Pan; Cho-Fan Hsieh; Ru-Pin Pan; Masaki Tanaka; Fumiaki Miyamaru; Masahiko Tani; Masanori Hangyo
    Optics Express, 13(11), 3921-3921, 2005リポジトリ電子ジャーナル
  • Finite size effect of transmission property for metal hole arrays in subterahertz region
    Fumiaki Miyamaru; Masanori Hangyo
    Applied Physics Letters, 84(15), 2742-2744, Apr. 2004リポジトリ電子ジャーナル
  • Terahertz Two-Dimensional Electrooptic Sampling Using High Speed Complementary Metal-Oxide Semiconductor Camera
    Fumiaki Miyamaru; Taigiro Yonera; Masahiko Tani; Masanori Hangyo
    Japanese Journal of Applied Physics, 43(4A), L489-L491, Mar. 2004リポジトリ電子ジャーナル
  • Noninvasive Inspection of C-4 Explosive in Mails by Terahertz Time-Domain Spectroscopy
    Kohji Yamamoto; Mariko Yamaguchi; Fumiaki Miyamaru; Masahiko Tani; Masanori Hangyo; Takeshi Ikeda; Akira Matsushita; Kenji Koide; Michiaki Tatsuno; Yukio Minami
    Japanese Journal of Applied Physics, 43, L414, Mar. 2004リポジトリ電子ジャーナル
  • Polarization response of two-dimensional metallic photonic crystals studied by terahertz time-domain spectroscopy
    Fumiaki Miyamaru; Masanori Hangyo
    Applied Optics, 43(6), 1412-1412, Feb. 2004リポジトリ電子ジャーナル
  • Large polarization change in two-dimensional metallic photonic crystals in subterahertz region
    Fumiaki Miyamaru; Takashi Kondo; Takeshi Nagashima; Masanori Hangyo
    Applied Physics Letters, 82(16), 2568-2570, Apr. 2003リポジトリ電子ジャーナル
  • Study of coherent LO phonon–plasmon-coupled modes by double-pulse excitation
    K Mizoguchi; F Miyamaru; M Nakajima; M Hase; S Nakashima
    Journal of Luminescence, 87–89, May 2000リポジトリ電子ジャーナル
  • Study of coherent LO phonon-plasmon coupled modes in n-GaAs by spectrally resolved pump-probe measurement
    K Mizoguchi; F Miyamaru; M Nakajima; M Hase; S Nakashima
    PHYSICA B, 272(1-4), 367-370, Dec. 1999, Refereed, Not invitedWebofScienceリポジトリ電子ジャーナル
  • Dynamics of coherent plasmon-phonon coupled modes in GaAs using ultrashort laser puises
    M. Hase; K. Mizoguchi; H. Harima; F. Miyamaru; S. Nakashima; R. Fukasawa; M. Tani; K. Sakai
    Journal of Luminescence, 76–77, Feb. 1998リポジトリ電子ジャーナル

Affiliated academic society

  • 応用物理学会
  • 日本物理学会

Research Themes

  • 時間壁によるテラヘルツ波の周波数変換の高効率化
    科学研究費補助金, 基盤研究(C)
    2022 - 2024
  • (住友財団) 近接場リアルタイムイメージングを目指したテラヘルツハイパーレンズの開発
    住友財団
    2011
  • (泉科学技術振興財団) テラヘルツ帯3次元メタマテリアルによる負屈折率物質及び、座標変換物質の創製
    泉科学技術振興財団
    2010
  • プラズモニック結晶・メタマテリアルの創製

Industrial Property Rights

  • (US6898335) Optical modulator, exposure head and image recording apparatus, US6898335, Patent right
  • (US6717605) Focal position adjusting apparatus, exposure head, and image recording apparatus, US6717605, Patent right
  • (US6664999) Image-recording device and method, US6664999, Patent right
  • (EP01136272B1) Apparatus for and method of recording image, EP01136272B1, Patent right
  • (US7339697) Apparatus for and method of recording image based on detected recording duty ratio, US7339697, Patent right
    Fujii Takeshi, Hatano Youichi, Sumi Katsuto, Yamashita Akiko, Miyamaru Fumiaki
  • (US7250961) Light beam scanning method and apparatus compensating for defects, US7250961, Patent right
    Sumi Katsuto, Miyamaru Fumiaki