Issued Patents All Time
Showing 26–39 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8593624 | Refractive index measuring apparatus | Yusuke Kusaka, Yohei Takechi, Atsushi Fukui, Seiji Hamano | 2013-11-26 |
| 7821626 | Angle measuring device and method | Takashi Urashima, Tomotaka Furuta, Hidetoshi Utsuro | 2010-10-26 |
| 7561350 | Optical unit and its manufacturing method | Yoshiro Kitamura, Seiji Kumazawa, Koji Funami, Yasuo Nishihara | 2009-07-14 |
| 7379172 | Method and apparatus for inspection of optical component | Hidetoshi Utsuro, Tomotaka Furuta, Takashi Urashima | 2008-05-27 |
| 6809829 | Method and apparatus for evaluating aberrations of optical element and method and apparatus for adjusting optical unit and lens | Masahiro Nakajo, Kanji Nishii | 2004-10-26 |
| 6538749 | Method and apparatus for evaluating aberrations of optical element for use with optical device by using phase differences determined by overlapping two diffracted lights to form a sharing image | Masahiro Nakajo, Kanji Nishii | 2003-03-25 |
| 6068382 | Panel-form illuminating system | Atsushi Fukui, Kanji Nishii, Kenji Takamoto, Masami Ito, Ken Tatsuta +2 more | 2000-05-30 |
| 5999249 | Position detecting element and range sensor | Masami Ito, Kanji Nishii, Kenji Takamoto, Atsushi Fukui | 1999-12-07 |
| 5986727 | Back light illuminator for liquid crystal display apparatus | Atsushi Fukui, Kanji Nishii, Kenji Takamoto, Masami Ito | 1999-11-16 |
| 5981941 | Optical encorder for detection having a moving reference point | Kanji Nishii, Kenji Takamoto, Masami Ito, Atsushi Fukui, Tomohisa Kishi | 1999-11-09 |
| 5980054 | Panel-form illuminating system | Atsushi Fukui, Kanji Nishii, Kenji Takamoto, Masami Ito, Ken Tatsuta +2 more | 1999-11-09 |
| 5894345 | Optical method of detecting defect and apparatus used therein | Kenji Takamoto, Kanji Nishii, Masami Ito, Atsushi Fukui | 1999-04-13 |
| 5754341 | Phase grating, its fabricating method, optical encoder, motor using the optical encoder, and robot using the motor | Kanji Nishii, Kenji Takamoto, Masami Ito, Atsushi Fukui | 1998-05-19 |
| 5694218 | Optical encoder including a plurality of phase adjusting gratings | Atsushi Fukui, Kanji Nishii, Kenji Takamoto, Masami Ito | 1997-12-02 |