Issued Patents 2020
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10746904 | Free-form surface lens, method of designing free-form surface lens, free-form surface mirror, method of designing free-form surface mirror, and projection type video display apparatus | Koji Hirata, Masahiko Yatsu, Yuki Matsumiya, Kayono Kimura | 2020-08-18 |
| 10678017 | Projection image display device | Koji Hirata, Masahiko Yatsu, Yuki Matsumiya, Kayono Kimura | 2020-06-09 |
| 10545334 | Flare-cut member, lens device, and optical device | Masahiko Yatsu | 2020-01-28 |