General information

Company name Kokyo, Inc.
Founding April 16th, 2009
Representative director CEO Kazuhiko Sumimura (Ph.D (engneering), MBA, Achievements(in Japanese)Facebook
Capital stock ¥15,000,000 (at Dec. 2012)
Location No.5 Hase Bldg. 2F, 637, Suiginyacho, Shimogyo-ku Kyoto-shi, Kyoto,
600-8411, Japan
  • Management of the free database sites about lasers and optics
  • Distribution of optical products
  • Running the site to learn the basics of optical and laser “Optipedia (in Japanese)”
  • Employment placement business
  • Technical consulting, Contracted development
  • Advertising agency
  • Jun Kimura (Actvila, Ltd. former president, Panasonic Corporation former senior director)
  • Kosuke Takahashi (Lawyer)
  • Sadao Nakai (Osaka Univ. honorary professor,Former president of the graduate school for the creation of new photonics industries,The head of laser society of japan)
  • Yasuo Masuda (Certified social insurance labor consultant)
  • Takafumi Mori (STAGE Co., Ltd. president and representative director)
  • Shigeki Mori (Tax accountant)

Our Team – experts of optics and photonics

Kazuhiko Sumimura

住村Ph. D (Engineering), MBA
Research interest: Fiber laser




Parts of achievements:
K. Sumimura, Y. Genda, T. Ohta, K. Itoh and N. Nishizawa,
“Quasi-supercontinuum generation using 1.06 μm ultrashort-pulse laser system for ultrahigh-resolution optical-coherence tomography,”
Opt. Lett., Vol. 35, 3631 (2010).

Y. Ozeki, W. Umemura, Y. Otsuka, S. Satoh, H. Hashimoto, K. Sumimura, N. Nishizawa, K. Fukui and K. Itoh,
“High-speed molecular spectral imaging of tissue with stimulated Raman scattering,”
Nat. Photonics, Vol. 6, 845 (2012).

Mitsuo Minomura

美濃村Ph. D (Engineering)
Research interest: Environmental measurement by lasers (LIDAR, Gas measurement), Satellite image analysis



Parts of achievements:
M. Minomura, H. Kuze, and N. Takeuchi,
“Adjacency Effect in the Atmospheric Correction of Satellite Remote Sensing Data: Evaluation of the Influence of Aerosol Extinction Profiles,”
Opt. Rev., Vol. 8, 133 (2001).

M. Minomura, J. Ru, H. Kuze, and N. Takeuchi,
“Atmospheric correction of satellite data using multi-wavelength lidar data with MODTRAN3 code,”
Adv. Space Res., Vol. 25, 1033 (2000).

PERRET Luc 「ペレ・リュック」

PerretPh. D (Engineering)
Research interest: Wavelength-sweeping lasers、Optical Metrology



Parts of achievements:

Luc Perret, P. Pfeiffer, and N. Javahiraly, “Origin and control of Sinusoidal Nonlinearities in Wavelength-Tuned Littman External Cavity Laser Diodes2″ Journal of Lightwave Tech. 27, 4927-4934 (2009).

L. Perret, L. Chassagne, S. Topçu, P. Ruaux, B. Cagneau, Y. Alayli, “Fiber optics sensor for sub-nanometric displacement and wide bandwidth systems”, Sensors and Actuators A: Physical, Volume 165, 189-193 (2011).

Takuji Nakagawa

スクリーンショット 2017-01-13 10.00.33Ph. D (Engineering)
Research interest:Film deposition technology



Parts of achievements:

Nakagawa, T., Kageyama, K., Wada, N., Sakabe, Y., Kirihara, S., & Miyamoto, Y. “Fabrication and Microwave Properties of Three‐Dimensional Photonic Crystals With a Diamond Structure Composed of Ceramic Spheres in Resin”. J. Am. Ceram. Soc.,, 90(4), 1112-1115. (2007).

Nakagawa, T., Kageyama, K., Takagi, H., Sakabe, Y., Kirihara, S., & Miyamoto, Y.. “Diamond-Structure Photonic Crystals Composed of Ceramic Spheres in Resin and Their Microwave Properties”.Jpn. J.Appl..Phys,, 46(10S), 7117. (2007).

Nakagawa, T., Kageyama, K., Takagi, H., Sakabe, Y., Kirihara, S., & Miyamoto, Y.. “Stereolithographic Fabrication and Microwave Properties of 1D Tunable Photonic Crystals Composed of YIG and Alumina Plates in Resin”.J. Am. Ceram. Soc.,91(7), 2195-2200. (2008).