Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7576929 | Lens holder, lens-centering device and method of centering lens | — | 2009-08-18 |
| 7494223 | Polarization conversion element, method of manufacturing the same and illumination source unit using the same | — | 2009-02-24 |
| 7403348 | Lens assembly for projecting image | Yasuto Kuroda | 2008-07-22 |
| 7391577 | Projection lens and projector | — | 2008-06-24 |
| 7278755 | Illumination apparatus | — | 2007-10-09 |
| 7274522 | Reflective optical system | — | 2007-09-25 |
| 7258453 | Projector | — | 2007-08-21 |
| 7244032 | Projector | — | 2007-07-17 |
| 7212357 | Positioning structure | Kazuyuki Tsuchiya, Koji Ogaki | 2007-05-01 |
| 7035020 | Zoom lens | — | 2006-04-25 |
| 6997559 | Reflective liquid crystal projector | — | 2006-02-14 |
| 6982767 | Liquid crystal projector | — | 2006-01-03 |
| 6942349 | Asymmetric aperture diaphragm placing structure for projection lens and projection type image display apparatus using the same | — | 2005-09-13 |
| 6618213 | Rotary optical filter apparatus integrated with cooling fan and illumination optical system | — | 2003-09-09 |