Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6545823 | Double-wavelength aperture restricting filter and optical pickup apparatus using the same | — | 2003-04-08 |
| 6445511 | Inner-focus-type lens | — | 2002-09-03 |
| 6141084 | Imaging lens for copying and copying apparatus | — | 2000-10-31 |
| 5920436 | Large-aperture lens for low-illuminance imaging | — | 1999-07-06 |