Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7982968 | Variable-power optical system, image pickup device, and digital apparatus | Keiji Matsusaka, Yasunari Fukuta | 2011-07-19 |
| 7922340 | Projection optical system with enlargement at a varying magnification | — | 2011-04-12 |
| 7869134 | Variable power optical system, imaging lens system and digital apparatus | Keiji Matsusaka | 2011-01-11 |