Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696998 | Optical apparatus equipped with sight line detector | Akira Yamada, Keiji Nagata, Akihiko Nagano | 1997-12-09 |
| 5692222 | Camera having focus detection device | Akira Yamada, Akihiko Nagano | 1997-11-25 |
| 5634141 | Visual axis detection device capable of reducing detection errors due to variations of eyes among individuals | Akira Akashi, Akira Yamada, Akihiko Nagano | 1997-05-27 |
| 5610681 | Optical eye-control apparatus | Akihiko Nagano, Akira Yamada | 1997-03-11 |
| 5600399 | Optical apparatus and camera for controlling a plurality of functions by using a visual axis | Akira Yamada, Akihiko Nagano | 1997-02-04 |