Issued Patents All Time
Showing 51–75 of 77 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7548383 | Optical pickup and objective lens used therein | Katsuhiko Hayashi, Yasuhiro Tanaka, Kazuhiko Ishimaru | 2009-06-16 |
| 7545583 | Optical lens having antireflective structure | Katsuhiko Hayashi, Yasuhiro Tanaka | 2009-06-09 |
| 7433125 | Light quantity distribution control element and optical apparatus using the same | Motonobu Yoshikawa, Yoshiharu Yamamoto, Yasuhiro Tanaka, Hiroshi Yamaguchi | 2008-10-07 |
| 7358475 | Solid-state imaging device and camera | Syouji Tanaka, Ryohei Miyagawa, Toshiya Fujii, Yasuhiro Tanaka, Hiroaki Okayama | 2008-04-15 |
| 7292321 | Contact detection sensor and contact detection method | Yoshiharu Yamamoto, Katsuhiko Hayashi, Hiroshi Yamaguchi | 2007-11-06 |
| 7256942 | Single lens element, light source device and scanning optical device | Motonobu Yoshikawa, Yasuhiro Tanaka, Yoshiharu Yamamoto, Daizaburo Matsuki, Masaru Fujita +1 more | 2007-08-14 |
| 7248420 | Optical pickup lens device and information recording and reproducing device using the same | Katsuhiko Hayashi, Yasuhiro Tanaka, Yoshiaki Komma | 2007-07-24 |
| 7239448 | Light quantity distribution control element and optical apparatus using the same | Motonobu Yoshikawa, Yoshiharu Yamamoto, Yasuhiro Tanaka, Hiroshi Yamaguchi | 2007-07-03 |
| 7236304 | Imaging Device | Hiroaki Okayama, Kazutake Boku, Yasuhiro Tanaka, Kenichi Hayashi, Yoshimasa Fushimi +2 more | 2007-06-26 |
| 7221521 | Optical pickup lens device and information recording and reproducing device using the same | Katsuhiko Hayashi, Yasuhiro Tanaka, Yoshiaki Komma, Fumitomo Yamasaki | 2007-05-22 |
| 7177101 | Optical head apparatus and optical information recording and reproduction apparatus | Yasuhiro Tanaka, Tomohiko Sasano, Daisuke Ogata | 2007-02-13 |
| 7099260 | Objective lens for optical disk | Yasuhiro Tanaka, Tomohiko Sasano | 2006-08-29 |
| 7068445 | Optical pickup lens device and information recording and reproducing device using the same | Katsuhiko Hayashi, Yasuhiro Tanaka, Yoshiaki Komma, Fumitomo Yamasaki | 2006-06-27 |
| 7046350 | Device for calculating diffraction efficiencies of a diffraction lens, lens with grating element, and optical system for reading | Kazutake Boku, Yasuhiro Tanaka, Tomohiko Sasano, Shusuke Ono | 2006-05-16 |
| 6829209 | OBJECTIVE FOR OPTICAL DISK, OPTICAL HEAD DEVICE AND OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS BOTH COMPRISING THE SAME, MOLD FOR FORMING LENS, METHOD FOR MACHINING MOLD FOR FORMING LENS, AND SHAPE MEASURING INSTRUMENT | Yasuhiro Tanaka, Tomohiko Sasano | 2004-12-07 |
| 6807017 | Objective lens and optical head device | Tomohiko Sasano, Yasuhiro Tanaka | 2004-10-19 |
| 6627869 | Beam shaper, and semiconductor laser source device and optical head using the beam shaper | Yasuhiro Tanaka, Tomohiko Sasano | 2003-09-30 |
| 6606198 | Lens array | Tomohiko Sasano, Yasuhiro Tanaka, Yoshikazu Sano, Tomoko Komatsu, Michiyo Ichikawa +2 more | 2003-08-12 |
| 6590717 | Optical system for optical disk, optical head unit for optical disk, and optical drive device | Tomohiko Sasano, Yasuhiro Tanaka | 2003-07-08 |
| 6504975 | Coupling lens and semiconductor laser module | Yasuhiro Tanaka, Hiroyuki Asakura, Tomohiko Sasano | 2003-01-07 |
| 6490100 | Objective lens and optical head device | Tomohiko Sasano, Yasuhiro Tanaka | 2002-12-03 |
| 6349000 | Device for calculating diffraction efficiencies of a diffraction lens, lens with grating element, and optical system for reading | Kazutake Boku, Yasuhiro Tanaka, Tomohiko Sasano, Shusuke Ono | 2002-02-19 |
| 5986779 | Multiple focus lens, an optical head apparatus and an optical information recording-reproducing apparatus | Yasuhiro Tanaka, Yoshiaki Komma, Sadao Mizuno | 1999-11-16 |
| 5814806 | Code sheet representing multiple code information and method for producing the same | Yasuhiro Tanaka, Hiroaki Okayama, Shusuke Ono, Kazutake Boku, Katsu Yamada +2 more | 1998-09-29 |
| 5684641 | Objective lens and optical head apparatus using the objective lens | Yasuhiro Tanaka, Osamu Doi, Kenji Inoue, Jun Murata | 1997-11-04 |