Issued Patents All Time
Showing 1–25 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12271104 | Light-source device, image projection apparatus, and display device | Makoto Hirakawa, Kazuhiro Fujita, Takashi Sasaki | 2025-04-08 |
| 12130544 | Light-source optical system, light-source device, and image display apparatus | Kasumi Nakamura, Makoto Hirakawa | 2024-10-29 |
| 12114106 | Light-source device and image forming apparatus including same | Kazuhiro Fujita, Kasumi Nakamura | 2024-10-08 |
| 12072617 | Light source optical system, light source device, light source unit, and image display apparatus | Makoto Hirakawa, Kasumi Nakamura | 2024-08-27 |
| 12066752 | Light-source device, image projection apparatus, and light-source optical system | Kazuhiro Fujita, Kasumi Nakamura | 2024-08-20 |
| 11953816 | Wavelength conversion plate, light source device, and image projection apparatus | Kazuhiro Fujita, Kasumi Nakamura | 2024-04-09 |
| 11874592 | Light source device and image projection apparatus | Kasumi Nakamura, Kazuhiro Fujita, Takashi Sasaki, Shigeaki Imai, Makoto Hirakawa | 2024-01-16 |
| 11829058 | Light source device and image projection apparatus including a rod integrator and light guide | Kasumi Nakamura, Tatsuya Takahashi, Makoto Hirakawa | 2023-11-28 |
| 11812201 | Light guide optical device, light source device, and image projection apparatus | Takashi Sasaki, Kasumi Nakamura, Kazuhiro Fujita, Makoto Hirakawa, Shigeaki Imai | 2023-11-07 |
| 11762272 | Light-source device and image projection apparatus | Kasumi Nakamura, Makoto Hirakawa, Kazuhiro Fujita | 2023-09-19 |
| 11720010 | Light source device and projection device | Kazuhiro Fujita, Makoto Hirakawa, Shigeaki Imai | 2023-08-08 |
| 11677914 | Light-source device and image forming apparatus including same | Kazuhiro Fujita, Kasumi Nakamura | 2023-06-13 |
| 11669004 | Light source optical system, light source device, light source unit, and image display apparatus | Makoto Hirakawa, Kasumi Nakamura | 2023-06-06 |
| 11640106 | Light source optical system, light source device, and image projection apparatus | Naoki Nakamura | 2023-05-02 |
| 11630288 | Image projection apparatus | Shigeaki Imai, Kazuhiro Fujita, Makoto Hirakawa | 2023-04-18 |
| 11537037 | Light source device, image projection apparatus, and light source optical system | Kazuhiro Fujita, Makoto Hirakawa, Shigeaki Imai | 2022-12-27 |
| 11506967 | Light-source device and image projection apparatus | Kasumi Nakamura, Makoto Hirakawa, Kazuhiro Fujita | 2022-11-22 |
| 11314157 | Light source optical system, light source device, and image projection apparatus | Tatsuya Takahashi, Kasumi Nakamura | 2022-04-26 |
| 11042082 | Projection optical system including movable lens groups, a non-movable lens group, and a curved mirror | Hibiki Tatsuno, Nobuyuki Arai, Hirotoshi Nakayama | 2021-06-22 |
| 10962750 | Projection optical system, projection apparatus, and projection system | Hibiki Tatsuno, Yasuyuki Shibayama | 2021-03-30 |
| 10942434 | Light source optical system, light source device, and image projection apparatus | Tatsuya Takahashi, Kasumi Nakamura | 2021-03-09 |
| 10890840 | Projection optical system unit, projection optical system, and projection optical apparatus | Hirotoshi Nakayama | 2021-01-12 |
| 10725369 | Light source device and image display apparatus | Kasumi Nakamura, Hirotoshi Nakayama, Naoki Nakamura | 2020-07-28 |
| 10585269 | Projection optical system, projection apparatus, and projection system | Hibiki Tatsuno, Yasuyuki Shibayama | 2020-03-10 |
| 10241308 | Projection optical system including movable lens groups and image display apparatus | Hibiki Tatsuno, Nobuyuki Arai, Hirotoshi Nakayama | 2019-03-26 |