Issued Patents All Time
Showing 51–75 of 109 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7542213 | Projecting zoom lens and projection display device | — | 2009-06-02 |
| 7529033 | Projection lens device and projection display apparatus using the same | — | 2009-05-05 |
| 7503657 | Color separation and synthesis systems, color separation systems and color synthesis systems, illumination optical systems, projection optical systems, and projection display devices using these systems | — | 2009-03-17 |
| 7489452 | Telephoto zoom lens system | Takayuki Ito | 2009-02-10 |
| 7438419 | Color separation and synthesis systems, color separation systems and color synthesis systems, illumination optical systems, projection optical systems, and projection display devices using these systems | — | 2008-10-21 |
| 7359126 | Projection zoom lens and projection display device which uses same | — | 2008-04-15 |
| 7355799 | Projection lens and projection display device using the same | — | 2008-04-08 |
| 7310188 | Projection lens and projection type display device using the same | Hiroshi Yamada | 2007-12-18 |
| 7289270 | Projection lens and projection display apparatus | — | 2007-10-30 |
| 7280285 | Projection lens and projection display device using the same | Akiko Nagahara | 2007-10-09 |
| 7220002 | Color separation and synthesis systems, color separation systems and color synthesis systems, illumination optical systems, projection optical systems, and projection display devices using these systems | — | 2007-05-22 |
| 7207681 | Projection display device with optical combiner between first lens group and separate second lens groups | — | 2007-04-24 |
| 7108376 | Compact projection display device | — | 2006-09-19 |
| 7040758 | Spectacle lens | — | 2006-05-09 |
| 7008060 | Projector optical system and projector apparatus using the same | — | 2006-03-07 |
| 6953248 | Progressive power lens | Hiroshi Sato, Moriyasu Shirayanagi | 2005-10-11 |
| 6948816 | Method of manufacturing progressive power spectacle lens | Moriyasu Shirayanagi | 2005-09-27 |
| 6816206 | Polarizing illumination optical system and projection-type display device which uses same | — | 2004-11-09 |
| 6773111 | Projection type image display apparatus | — | 2004-08-10 |
| 6738196 | Zoom lens with distortion correction and projection optical apparatus using it | — | 2004-05-18 |
| 6736505 | Progressive power spectacle lens | — | 2004-05-18 |
| 6626542 | Reflection type projection optical system | Tomoyuki Baba | 2003-09-30 |
| 6585380 | Illumination apparatus and projector type display apparatus using the same | — | 2003-07-01 |
| 6559901 | Illumination optical system and projection type display apparatus using the same | Takashi Watanabe | 2003-05-06 |
| 6480340 | Zoom lens | — | 2002-11-12 |