Issued Patents All Time
Showing 1–25 of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7190519 | Plate-like polarizing element, a polarizing conversion unit provided with the element, and a projector provided with the unit | — | 2007-03-13 |
| 7038722 | Optical imaging system for suppressing the generation of red-toned ghosting particularly when there is background light | — | 2006-05-02 |
| 5751480 | Plate-like polarizing element, a polarizing conversion unit provided with the element, and a projector provided with the unit | — | 1998-05-12 |
| 5537168 | Projection optical apparatus comprising automatic adjustment unit | Shoji Suzuki, Shuichiro Saito, Masaharu Suzuki, Koutaro Yano, Toru Matsuda +1 more | 1996-07-16 |
| 5303087 | Retrofocus type lens | Shingo Hayakawa, Shouichi Yamazaki, Koutaro Yano | 1994-04-12 |
| 5270857 | Optical system for stabilizing an image | Kouji Oizumi, Shoichi Yamzaki | 1993-12-14 |
| 5253005 | Small-sized camera | Takeshi Koyama, Sadatoshi Takahashi, Kouji Oizumi | 1993-10-12 |
| 5231431 | Projection type display apparatus | Koutaro Yano | 1993-07-27 |
| 5182671 | Variable magnification optical system having a capability of stabilizing the image | Shoichi Yamazaki | 1993-01-26 |
| 5179473 | Zoom lens | Koutaro Yano, Tsunefumi Tanaka | 1993-01-12 |
| 5124839 | Phase-type focusing screen | Shoichi Yamazaki, Hiroshi Matsui | 1992-06-23 |
| 5096288 | Projection apparatus | Koutaro Yano, Tsunefumi Tanaka | 1992-03-17 |
| 5089835 | Phase-type diffusing plate | — | 1992-02-18 |
| 5069537 | Image deflecting device | — | 1991-12-03 |
| 5054898 | Compact high-range varifocal objectives | Hiroki Nakayama, Jun Hattori, Shigeyuki Suda, Akihisa Horiuchi | 1991-10-08 |
| 5011272 | Compact zoom lens | Hiroki Nakayama, Jun Hattori, Shigeyuki Suda, Akihisa Horiuchi | 1991-04-30 |
| 4974950 | Optical system for deflecting image | Shoichi Yamazaki | 1990-12-04 |
| 4974947 | Refractive index distribution type meniscus lens and optics | Hiroki Nakayama | 1990-12-04 |
| 4955715 | Psuedo format camera | — | 1990-09-11 |
| 4949107 | Camera having telescopic capability | Takeshi Koyama, Sadatoshi Takahashi, Kouji Oizumi | 1990-08-14 |
| 4907868 | Optical system for deflecting image | Shoichi Yamazaki | 1990-03-13 |
| 4907866 | Objective of variable focal length | Hiroki Nakayama, Shigeyuki Suda, Jun Hattori, Akihisa Horiuchi | 1990-03-13 |
| 4865434 | Zoom lens capable of selecting a focal length beyond a standard focal length range | Takashi Matsushita, Sadatoshi Takahashi, Keiji Ikemori, Tsunefumi Tanaka | 1989-09-12 |
| 4859040 | Optical system having gradient-index lens and method for correcting aberrations | Jun Hattori | 1989-08-22 |
| 4844602 | Optical system for deflecting image | Shoichi Yamazaki | 1989-07-04 |