Issued Patents All Time
Showing 1–25 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9164038 | Fluorescence light detection device and fluorescence light detection method | — | 2015-10-20 |
| 7724997 | Waveguide element, method for producing the waveguide element, and optical sensor | Masatoshi Nara, Keiji Tsunetomo | 2010-05-25 |
| 7688512 | Transmissive diffraction grating, and spectral separation element and spectroscope using the same | Kentaro Yamada, Tatsuhiro Nakazawa, Keiji Tsunetomo | 2010-03-30 |
| 7515804 | Optical waveguide device | Keiji Tsunetomo | 2009-04-07 |
| 7421176 | Waveguide element using photonic crystal | Kazuaki Oya, Keiji Tsunetomo | 2008-09-02 |
| 7349612 | Optical element, optical circuit provided with the optical element, and method for producing the optical element | Junji Nishii, Tatsuhiro Nakazawa, Keiji Tsunetomo | 2008-03-25 |
| 7329372 | Method for producing aspherical structure, and aspherical lens array molding tool and aspherical lens array produced by the same method | Keiji Tsunetomo, Takahiro Hashimoto, Hideshi Nagata, Kenjiro Hamanaka | 2008-02-12 |
| 7310468 | Photonic crystal waveguide, homogeneous medium waveguide, and optical device | Kazuaki Oya, Keiji Tsunetomo | 2007-12-18 |
| 7305155 | Optical element and wavelength separator using the same | Kazuaki Oya, Tatsuhiro Nakazawa, Keiji Tsunetomo, Junji Nishii | 2007-12-04 |
| 7260300 | Waveguide element using photonic crystal | Kazuaki Oya, Masatoshi Nara, Keiji Tsunetomo, Takahiro Asai | 2007-08-21 |
| 7231116 | Filter module | Hiroyuki Tanaka, Takashi Fukuzawa, Leandro de Castro | 2007-06-12 |
| 7170600 | Spectrometer using diffraction grating | Junji Nishii, Tatsuhiro Nakazawa, Keiji Tsunetomo, Kazuaki Oya | 2007-01-30 |
| 7068903 | Optical element using one-dimensional photonic crystal and spectroscopic device using the same | Kazuaki Oya, Masatoshi Nara, Keiji Tsunetomo, Takahiro Asai | 2006-06-27 |
| 7012721 | Optical imaging system with rod lens array | Minoru Toyama | 2006-03-14 |
| 7009701 | Optical element and spectroscopic device using the same | Masatoshi Nara, Tatsuhiro Nakazawa, Kazuaki Oya, Keiji Tsunetomo | 2006-03-07 |
| 6968096 | Diffraction device using photonic crystal | Kazuaki Oya, Keiji Tsunetomo, Vladimir Serikov | 2005-11-22 |
| 6919953 | Method for measuring gradient index distribution of rod lens | Minoru Taniyama | 2005-07-19 |
| 6914715 | Optical element | Tatsuhiro Nakazawa, Kazuaki Oya, Keiji Tsunetomo, Masatoshi Nara | 2005-07-05 |
| 6909557 | Optical coupling system and optical device using the same | Hideshi Nagata, Tatsuhiro Nakazawa, Yasuji Sasaki, Minoru Taniyama | 2005-06-21 |
| 6847770 | Lens function-including optical fiber and method of producing the same | Tadashi Koyama, Masami Kitano | 2005-01-25 |
| 6825963 | Optical element | Kazuaki Oya, Masatoshi Nara | 2004-11-30 |
| 6807337 | Optical device | Masahiro Oikawa | 2004-10-19 |
| 6782162 | Optical module and method for assembling the same | Takashi Fukuzawa, Hiroyuki Tanaka, Ikuto Ohyama, Takeshi Ishimaru, Minoru Taniyama | 2004-08-24 |
| 6577790 | Optical device with optical fibers and rod lenses | — | 2003-06-10 |
| 6511932 | Graded index lens | Jun Yamaguchi | 2003-01-28 |