Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6980504 | Diffractive optical element with a pair of opposite surfaces projecting light on a photodetector | — | 2005-12-27 |
| 6967907 | Optical pickup device and optical disk device having a diffraction grating | — | 2005-11-22 |
| 6906991 | Optical head, optical recording and/or reproducing apparatus and integrated optical module | — | 2005-06-14 |