Inventor
SAWAI YASUMASA
JP50 patents
⚠️ This page may combine multiple inventors who share the name “SAWAI YASUMASA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MINOLTA CO LTD
24 patentsUS6467911B1Oct 22, 2002
Projector and lamp unit
MINOLTA CO LTD94 citations98
US6343862B1Feb 5, 2002
Projecting image display device
MINOLTA CO LTD87 citations98
US6624862B1Sep 23, 2003
Display optical apparatus having a rotary compensator to improve display contrast
MINOLTA CO LTD54 citations96
US5967635AOct 19, 1999
Polarized beam splitter and an illumination optical system and a projector provided with a polarized beam splitter
MINOLTA CO LTD42 citations95
US6347014B1Feb 12, 2002
Illumination optical system and projection-type image display apparatus
MINOLTA CO LTD31 citations93
US7269843B2Sep 11, 2007
Broadcasting system and media player
MINOLTA CO LTD28 citations92
US6331879B1Dec 18, 2001
Liquid crystal projector with an illumination optical system
MINOLTA CO LTD19 citations92
US6264331B1Jul 24, 2001
Image projector
MINOLTA CO LTD22 citations92
US6193376B1Feb 27, 2001
Display apparatus
MINOLTA CO LTD34 citations92
US6190013B1Feb 20, 2001
Polarized beam splitter and an illumination optical system and a projector provided with a polarized beam splitter
MINOLTA CO LTD22 citations92
US6183093B1Feb 6, 2001
Light source device and an illuminator and an image projector
MINOLTA CO LTD27 citations92
US6478431B1Nov 12, 2002
Illumination system and projector
MINOLTA CO LTD15 citations84
US6176583B1Jan 23, 2001
Polarization conversion dichroic mirror and a liquid crystal projector
MINOLTA CO LTD18 citations84
US6561655B2May 13, 2003
Projector
MINOLTA CO LTD16 citations83
US6089720AJul 18, 2000
Illuminating optical apparatus
MINOLTA CO LTD13 citations74
US6809780B2Oct 26, 2004
Projector with fan controller
MINOLTA CO LTD10 citations73
US6429975B1Aug 6, 2002
Illumination optical system and projector using same
MINOLTA CO LTD10 citations73
US6315415B1Nov 13, 2001
Image projector
MINOLTA CO LTD9 citations73
US6188524B1Feb 13, 2001
Optical system for use in an image projector
MINOLTA CO LTD14 citations73
US6091550AJul 18, 2000
Optical system for use in an image projector
MINOLTA CO LTD15 citations73
US6005655ADec 21, 1999
Projector capable of projecting polarized illumination light
MINOLTA CO LTD10 citations73
US5898527AApr 27, 1999
Decentered lens holding structure and its positioning method
MINOLTA CO LTD13 citations73
US6155685ADec 5, 2000
Projector
MINOLTA CO LTD12 citations72
US6412951B1Jul 2, 2002
Optical image projector
MINOLTA CO LTD5 citations63
KONICA MINOLTA INC
9 patentsUS9874806B2Jan 23, 2018
Color splitting/combining prism, and optical system and projector therewith
KONICA MINOLTA INC5 citations72
US10324362B2Jun 18, 2019
Optical unit and projector therewith
KONICA MINOLTA INC1 citations61
US9866806B2Jan 9, 2018
Prism unit and projector
KONICA MINOLTA INC1 citations51
US9612516B2Apr 4, 2017
Projection type image display apparatus
KONICA MINOLTA INC0 citations51
US10775684B2Sep 15, 2020
Optical unit and projector therewith
KONICA MINOLTA INC0 citations50
US10481309B2Nov 19, 2019
Prism unit and projector
KONICA MINOLTA INC0 citations42
US9952424B2Apr 24, 2018
Image projection apparatus
KONICA MINOLTA INC0 citations42
US10578845B2Mar 3, 2020
Illumination optical system and projector
KONICA MINOLTA INC0 citations41
US10145988B2Dec 4, 2018
Projection lens and projector with laser beam light source
KONICA MINOLTA INC0 citations40
KONICA MINOLTA OPTO INC
8 patentsUS7530697B2May 12, 2009
Illumination optics and image projecting apparatus having thereof
KONICA MINOLTA OPTO INC12 citations84
US7518803B2Apr 14, 2009
Dichroic prism, and prism unit and image projection apparatus employing same
KONICA MINOLTA OPTO INC17 citations82
US7943893B2May 17, 2011
Illumination optical system and image projection device having a rod integrator uniformizing spatial energy distribution of diffused illumination beam
KONICA MINOLTA OPTO INC4 citations63
US7920331B2Apr 5, 2011
Anamorphic converter and image projection system
KONICA MINOLTA OPTO INC6 citations63
US7850314B2Dec 14, 2010
Light-emitting module and image projection apparatus using same
KONICA MINOLTA OPTO INC4 citations63
US7784950B2Aug 31, 2010
Image projecting apparatus having variable stop
KONICA MINOLTA OPTO INC5 citations63
US7066609B2Jun 27, 2006
Projection-type display apparatus
KONICA MINOLTA OPTO INC5 citations63
US7434944B2Oct 14, 2008
Image projection apparatus
KONICA MINOLTA OPTO INC0 citations41
SAWAI YASUMASA
6 patentsUS8770760B2Jul 8, 2014
Image projection device
SAWAI YASUMASA4 citations72
US8408709B2Apr 2, 2013
Illumination optical system and projector
SAWAI YASUMASA2 citations59
US8998423B2Apr 7, 2015
Image Projection apparatus
SAWAI YASUMASA1 citations51
US8228443B2Jul 24, 2012
Video projection device
SAWAI YASUMASA0 citations51
US8864315B2Oct 21, 2014
Image projection apparatus
SAWAI YASUMASA0 citations41
US8061855B2Nov 22, 2011
Projection apparatus
SAWAI YASUMASA0 citations41