Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6809829 | Method and apparatus for evaluating aberrations of optical element and method and apparatus for adjusting optical unit and lens | Kazumasa Takata, Masahiro Nakajo | 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 | Kazumasa Takata, Masahiro Nakajo | 2003-03-25 |
| 6379017 | Illuminating system | Koki NAKABAYASHI, Atsushi Fukui, Hiroshi Watanabe, Ken Tatsuta | 2002-04-30 |
| 6154278 | Optical encoder for optically measuring displacement of moving body | Masami Ito, Makoto Kato, Atsushi Fukui, Keiichi Fujikawa | 2000-11-28 |
| 6068382 | Panel-form illuminating system | Atsushi Fukui, Kenji Takamoto, Masami Ito, Kazumasa Takata, Ken Tatsuta +2 more | 2000-05-30 |
| 5999249 | Position detecting element and range sensor | Masami Ito, Kenji Takamoto, Atsushi Fukui, Kazumasa Takata | 1999-12-07 |
| 5986727 | Back light illuminator for liquid crystal display apparatus | Atsushi Fukui, Kenji Takamoto, Masami Ito, Kazumasa Takata | 1999-11-16 |
| 5981941 | Optical encorder for detection having a moving reference point | Kazumasa Takata, Kenji Takamoto, Masami Ito, Atsushi Fukui, Tomohisa Kishi | 1999-11-09 |
| 5980054 | Panel-form illuminating system | Atsushi Fukui, Kenji Takamoto, Masami Ito, Kazumasa Takata, Ken Tatsuta +2 more | 1999-11-09 |
| 5894345 | Optical method of detecting defect and apparatus used therein | Kenji Takamoto, Masami Ito, Atsushi Fukui, Kazumasa Takata | 1999-04-13 |
| 5781269 | Distance measuring method and distance sensor | Masami Ito, Tsuyoshi Nomura, Seiji Hamano | 1998-07-14 |
| 5754341 | Phase grating, its fabricating method, optical encoder, motor using the optical encoder, and robot using the motor | Kazumasa Takata, Kenji Takamoto, Masami Ito, Atsushi Fukui | 1998-05-19 |
| 5748305 | Method and apparatus for particle inspection | Ken Shimono, Tatsuo Nagasaki, Kenji Takamoto, Masami Ito | 1998-05-05 |
| 5734472 | Method and appratus for measuring thickness of birefringence layer | Masami Ito, Kenji Takamoto, Atsushi Fukui | 1998-03-31 |
| 5717485 | Foreign substance inspection apparatus | Masami Ito, Kenji Takamoto, Tatsuo Nagasaki, Ken Shimono | 1998-02-10 |
| 5708488 | Phase type spatial light modulator having an output substantially uniform in amplitude | Atsushi Fukui, Masami Ito | 1998-01-13 |
| 5699153 | Method and apparatus for optical inspection | Kenji Takamoto, Masami Ito, Atsushi Fukui | 1997-12-16 |
| 5696373 | Optical encoder with dual diffraction grating | Atsushi Fukui, Kenji Takamoto, Masami Ito | 1997-12-09 |
| 5696374 | Optical encoder using doubled diffraction angle based on first and second diffraction gratings | Atsushi Fukui, Kenji Takamoto, Masami Ito | 1997-12-09 |
| 5694218 | Optical encoder including a plurality of phase adjusting gratings | Atsushi Fukui, Kenji Takamoto, Masami Ito, Kazumasa Takata | 1997-12-02 |
| 5661295 | Optical encoder with dual diffraction gratings | Atsushi Fukui, Kenji Takamoto, Masami Ito | 1997-08-26 |
| 5627678 | Fourier transform optical apparatus and optical information | Kenji Takamoto, Masami Ito, Atsushi Fukui | 1997-05-06 |
| 5579136 | Optical information processor employing a phase type spatial light modulator | Atsushi Fukui, Masami Ito | 1996-11-26 |
| 5532823 | Method of measuring optical characteristics of liquid crystal cells, measurement equipment therefor and method for manufacturing liquid crystal devices | Atsushi Fukui, Kenji Takamoto, Masami Ito | 1996-07-02 |
| 5526191 | Fourier transform lens assembly | Masami Ito, Atsushi Fukui | 1996-06-11 |