Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5655827 | Surface light source device | Isamu Kaneko, Hideaki Katoh, Kazuaki Yokoyama | 1997-08-12 |
| 5652745 | Optical system using polarized light with prevention of effect of birefringence | Masato Noguchi | 1997-07-29 |
| 5629799 | Chromatic aberration correcting element and its application | Koichi Maruyama, Masahiro Oono, Satoru Tachihara, Masato Noguchi | 1997-05-13 |
| 5600455 | Prismatic member with coarsened portions or triangular prismatic and semi-circular prismatic members arranged on a flat light emitting surface | Kayoko Watai, Kazuaki Yokoyama | 1997-02-04 |