Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11092312 | Light source device and stage lamp illumination system using the same | Quan Zhang, Yi Li | 2021-08-17 |
| 10746357 | Lighting device having polychromatic light source and optical element with light filter having through hole | Quan Zhang, Yi Li | 2020-08-18 |