Issued Patents All Time
Showing 51–59 of 59 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8482851 | Projection optical system and projection display device using the same | — | 2013-07-09 |
| 8270092 | Zoom lens for projection and projection-type display apparatus | Hiroshi Yamada, Akiko Nagahara | 2012-09-18 |
| 8072690 | Projection zoom lens system and projection type display apparatus | — | 2011-12-06 |
| 7710659 | Projection zoom lens system and projection type display apparatus | — | 2010-05-04 |
| 7663806 | Projection lens and projection type display device using the same | — | 2010-02-16 |
| 7436597 | Projection lens | — | 2008-10-14 |
| 6839186 | Large numerical aperture objective lens and night vision optical device using the same | Fumio Watanabe | 2005-01-04 |
| 6795247 | Optical instrument for observation | — | 2004-09-21 |
| 6606203 | Ocular zoom lens | — | 2003-08-12 |