Issued Patents All Time
Showing 1–25 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9581818 | Head-mounted display optical system and head-mounted display | — | 2017-02-28 |
| 9562997 | Optical system, image display device, and imaging device | — | 2017-02-07 |
| 9459384 | Diffraction optical system using free curve surface prism, and image capturing device | — | 2016-10-04 |
| 9429738 | Zoom lens and optical apparatus having the same | — | 2016-08-30 |
| 8194321 | Photographing lens and camera | — | 2012-06-05 |
| 8139295 | Optical system and eye piece | — | 2012-03-20 |
| 7990615 | Diffractive optical system and eyepiece optical system | — | 2011-08-02 |
| 7961396 | Diffractive optical system and optical device | — | 2011-06-14 |
| 7845796 | Spectacle lens | — | 2010-12-07 |
| 7821715 | Diffractive optical element | Akiko Miyakawa | 2010-10-26 |
| 7612940 | Diffractive optical element and method of fabricating diffractive optical element | — | 2009-11-03 |
| 7545573 | Projector optical system, projector, and method for forming real image in use of projector optical system | — | 2009-06-09 |
| 7511897 | Projector optical system | — | 2009-03-31 |
| 7136226 | Front teleconverter lens system | — | 2006-11-14 |
| 7123422 | Zoom lens system | — | 2006-10-17 |
| 7075734 | Zoom lens system | — | 2006-07-11 |
| 7042642 | Diffractive optical element | Yoshifumi Tokoyoda | 2006-05-09 |
| 6909846 | Zoom lens systems | — | 2005-06-21 |
| 6665131 | Imaging optical system | Hidenobu Harada | 2003-12-16 |
| 6563644 | Front tele-converter, and front tele-converter having vibration-reduction function | — | 2003-05-13 |
| 6424465 | Front tele-converter, and front tele-converter having vibration-reduction function | — | 2002-07-23 |
| 6320698 | Zoom lens with vibration reduction function | — | 2001-11-20 |
| 6285501 | Zoom lens having a long back focal length with vibration reduction function | — | 2001-09-04 |
| 6246519 | Zoom lens system with vibration reduction function | — | 2001-06-12 |
| 6124990 | Close-up photographing lens | — | 2000-09-26 |