Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5245175 | Focus detecting optical system including a plurality of focus blocks composed of an integrally molded prism member | — | 1993-09-14 |
| 5134526 | Focus detecting optical system including eccentrically disposed aperture stops | — | 1992-07-28 |
| 5084723 | Focus detecting device | Yasunobu Otsuka | 1992-01-28 |
| 5034764 | Combined eye- and waist-level real image mode finder | — | 1991-07-23 |
| 5034763 | Viewfinder optical system | — | 1991-07-23 |
| 4941012 | Finder optical system for cameras | — | 1990-07-10 |
| 4906078 | Variable magnification viewfinder | Toshihide Nozawa | 1990-03-06 |
| 4772106 | Compact zoom lens system | Yasuzi Ogata | 1988-09-20 |