Issued Patents 1989
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859842 | Multi-directional focus state detection apparatus | Yasuo Suda, Ichiro Ohnuki, Akira Ishizaki, Keiji Ohtaka, Takeshi Koyama | 1989-08-22 |
| 4855776 | Camera with automatic focusing device | — | 1989-08-08 |
| 4845521 | Camera with automatic focusing apparatus | — | 1989-07-04 |
| 4833313 | Focus detecting apparatus having increased SNR by selectively varying or holding constant the number of signals from sensor arrays | Akira Ishizaki, Yasuo Suda, Ichiro Ohnuki, Keiji Ohtaka, Takeshi Koyama | 1989-05-23 |
| 4825238 | Focus detecting device | — | 1989-04-25 |
| 4825239 | Distance detection method and apparatus | Yasuo Suda, Akira Ishizaki, Hiroshi Ohmura, Keiji Ohtaka | 1989-04-25 |
| 4812869 | Focus detecting apparatus | Akira Ishizaki, Yasuo Suda, Ichiro Ohnuki, Keiji Ohtaka, Takeshi Koyama | 1989-03-14 |
| 4803507 | Automatic focusing device | Masanori Yamada | 1989-02-07 |
| 4801962 | Camera incorporating automatic focusing apparatus | — | 1989-01-31 |
| 4800410 | Focus detecting apparatus for selecting the operating process in conformity with the contrast of an object | Akira Ishizaki, Yasuo Suda, Ichiro Ohnuki, Keiji Ohtaka, Takeshi Koyama | 1989-01-24 |
| 4800261 | Apparatus for detecting focusing state of objective lens | — | 1989-01-24 |