Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10670875 | Diffractive optical element, optical system including diffractive optical element, imaging apparatus, and lens device | Mikio Kobayashi | 2020-06-02 |
| 10133084 | Diffractive optical element, optical system, and optical apparatus which reduce generation of unnecessary light | — | 2018-11-20 |
| 9285518 | Diffractive optical element, optical system, and optical apparatus | — | 2016-03-15 |
| 8941923 | Diffractive optical element, optical system, and optical apparatus | — | 2015-01-27 |
| 8902504 | Diffractive optical element having a reflective member disposed between different grating wall surfaces thereof, and optical system and optical apparatus having the diffractive optical element | — | 2014-12-02 |
| 8755119 | Diffractive optical element, optical system and optical apparatus | — | 2014-06-17 |
| 8730554 | Variable transmittance element, optical system, and optical apparatus utilizing electrochromic material | — | 2014-05-20 |
| 8681424 | Diffractive optical element containing grating surface and grating wall surface, and optical system having the same | — | 2014-03-25 |
| 8605358 | Diffractive optical element, optical system, and optical apparatus | — | 2013-12-10 |
| 8520304 | Diffractive optical element and optical system including the same | — | 2013-08-27 |
| 8336333 | Diffractive optical element and optical system using the same | — | 2012-12-25 |
| 8333476 | Image projection apparatus and image display system | Kazuhiko Momoki | 2012-12-18 |
| 8279526 | Optical system and image pickup apparatus having same | Kazuhiko Momoki, Sayoko Amano, Takehiko Nakai, Takeharu Okuno, Daisuke Sano | 2012-10-02 |
| 8120852 | Diffractive optical element, optical system, and optical apparatus | — | 2012-02-21 |
| 8064134 | Optical element and image projection apparatus | — | 2011-11-22 |
| 7916394 | Diffractive optical element and optical system using the same | — | 2011-03-29 |
| 7816640 | Polarization beam splitter and projection apparatus having the same | — | 2010-10-19 |
| 7631972 | Wavelength-selective polarization conversion element, illumination optical system, projection display optical system, and image projection apparatus | Yu Yamauchi | 2009-12-15 |
| 7562984 | Polarizing beam splitter and projection apparatus having the same | — | 2009-07-21 |
| 7472995 | Wavelength-selective polarization conversion element, projection displaying optical system and image projection apparatus | Yu Yamauchi, Atsushi Okuyama | 2009-01-06 |
| 7379242 | Polarization beam splitter and projection apparatus having the same | — | 2008-05-27 |