Issued Patents All Time
Showing 26–50 of 69 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6622391 | Incremental rotary encoder, and a surveying instrument incorporating a magnetic incremental rotary encoder | Masami Shirai, Katsuhiko Kenjo | 2003-09-23 |
| 6600308 | Magnetic encoder and method for reducing harmonic distortion thereof | Masami Shirai | 2003-07-29 |
| 6583819 | Electronic camera with movable optical element | Takayuki Ito, Makoto Mogamiya | 2003-06-24 |
| 6567353 | Optical head with light receiving element surfaces divided into at least three light receiving areas | Wataru Kubo, Hiroshi Nishikawa | 2003-05-20 |
| 6556348 | Multibeam optical system | Takashi Iizuka | 2003-04-29 |
| 6466351 | Multi-beam optical system | Takashi Iizuka | 2002-10-15 |
| 6388811 | Diffractive optical element including a diffractive grating pattern | Takashi Iizuka, Tsutomu Sato | 2002-05-14 |
| 6304395 | Viewing optical instrument having roof prism and a roof prism | Taku Ito | 2001-10-16 |
| 6234639 | Polarization converter and lighting device for LCD panel | — | 2001-05-22 |
| 6212010 | Diffractive optical element including a diffractive grating pattern | Takashi Iizuka, Tsutomu Sato | 2001-04-03 |
| 6178028 | Multibeam scanning exposure device | Hiroyuki Washiyama | 2001-01-23 |
| 6130782 | Beam splitting element including a corrugated-surface-diffraction-grading | Takashi Iizuka | 2000-10-10 |
| 6104689 | Sensor system for optical disc drive | — | 2000-08-15 |
| 6021000 | Beam splitting diffractive optical element | Takashi Iizuka, Tsutomu Sato | 2000-02-01 |
| 5914822 | Chromatic aberration correcting element and its application | Koichi Maruyama, Masahiro Oono, Satoru Tachihara, Tsuyoshi Ishikawa | 1999-06-22 |
| 5812223 | Color LCD projector with three color separating polarizing beam splitters | — | 1998-09-22 |
| 5784202 | Apparatus for isometrically splitting beams | — | 1998-07-21 |
| 5777788 | Polarizer and method for using same | — | 1998-07-07 |
| 5768036 | Beam receiving position adjusting device | Toshio Nakagishi, Hitoshi Kimura, Masahiro Oono, Koichi Maruyama | 1998-06-16 |
| 5768150 | Device and method for measuring a characteristic of an optical element | Tunehiko Sonoda, Masahiro Oono | 1998-06-16 |
| 5752107 | Real image finder system for a camera | Sachio Hasushita, Kazuhiro Yamada, Ichiro Taguchi, Masahiro Inazuka | 1998-05-12 |
| 5706260 | Apparatus for and method of synchronously recording signals onto a disk medium by a single head | Yoshio Kishi, Hiroyuki Fujikura, Teruhito Noshiro | 1998-01-06 |
| 5652745 | Optical system using polarized light with prevention of effect of birefringence | Tsuyoshi Ishikawa | 1997-07-29 |
| 5629799 | Chromatic aberration correcting element and its application | Koichi Maruyama, Masahiro Oono, Satoru Tachihara, Tsuyoshi Ishikawa | 1997-05-13 |
| 5559639 | Beam receiving position adjusting device | Toshio Nakagishi, Hitoshi Kimura, Masahiro Oono, Koichi Maruyama | 1996-09-24 |