Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7471611 | Zone phase correcting lens and optical head device | — | 2008-12-30 |
| 7304934 | Lens, optical head apparatus, and objective lens for the optical head apparatus | Kenichi Hayashi, Yuji Fujita, Yoshifusa Miyasaka | 2007-12-04 |
| 7236313 | Ring zonal phase correction lens and optical system and optical head device | Ryoichi Shiratori | 2007-06-26 |
| 7198376 | Illumination optical unit liquid crystal projector and production method of liquid crystal projector | Masao Katsumata | 2007-04-03 |
| 7139126 | Optical element, lens and optical head device | — | 2006-11-21 |
| 7027377 | Optical head device and objective lens | Yuji Fujita, Kenichi Hayashi, Yoshifusa Miyasaka, Takahiro Azuma | 2006-04-11 |
| 6987618 | Polarization converting device, illumination optical system and projector | — | 2006-01-17 |
| 5768028 | Scanning optics | — | 1998-06-16 |