Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12038674 | Optical device with magnetic mounting and dismounting mechanism, tool for mounting and dismounting the same, and optical device set having the same | — | 2024-07-16 |
| 10268045 | Adjustable multiple-ring polarizing ND filter assembly with elastic engaging member for axial ring securement | — | 2019-04-23 |
| 8976465 | Multi-ring optical filter assembly allowing independent adjustment of rotation angle of each lens thereof | — | 2015-03-10 |
| 8929006 | Pivotally connected structure allowing lens replacement and lens angle adjustment | — | 2015-01-06 |