Inventor
USHIYAMA TOMIYOSHI
JP22 patents
Patents
22 patentsUS6268799B1Jul 31, 2001
Light-source lamp unit, light-source device and projection-type display apparatus and method of use
SEIKO EPSON CORP50 citations96
US6084714AJul 4, 2000
Polarizing illumination device and projection display device
SEIKO EPSON CORP63 citations96
US5978136ANov 2, 1999
Optical element, polarization illumination device, and projection display apparatus
SEIKO EPSON CORP87 citations96
US5743610AApr 28, 1998
Projection-type display apparatus
SEIKO EPSON CORP102 citations96
US7006004B2Feb 28, 2006
Light-source lamp unit, light-source device and projection-type display apparatus
SEIKO EPSON CORP16 citations92
US6979960B2Dec 27, 2005
Circuit for driving light source, projector, method for controlling lighting of light source, and computer readable program for executing the same
SEIKO EPSON CORP38 citations92
US6690282B2Feb 10, 2004
Light-source lamp unit, light-source device and projection-type display apparatus
SEIKO EPSON CORP22 citations92
US6443576B1Sep 3, 2002
Projector
SEIKO EPSON CORP24 citations92
US6371617B1Apr 16, 2002
Projector
SEIKO EPSON CORP26 citations92
US6141150AOct 31, 2000
Dichroic prism, prism unit, and projection display apparatus
SEIKO EPSON CORP25 citations92
US6092901AJul 25, 2000
Polarizing illumination device and projection display device
SEIKO EPSON CORP43 citations92
USD420455SFeb 8, 2000
Replacement lamp for projector
SEIKO EPSON CORP21 citations92
US6556256B1Apr 29, 2003
Projector and prism used therein
SEIKO EPSON CORP14 citations84
USRE39859ESep 25, 2007
Dichroic prism, prism unit, and projection display apparatus
SEIKO EPSON CORP8 citations74
US6805450B2Oct 19, 2004
Projector
SEIKO EPSON CORP8 citations74
US6637886B2Oct 28, 2003
Projection display device
SEIKO EPSON CORP5 citations74
US6612702B1Sep 2, 2003
Projection display device
SEIKO EPSON CORP5 citations74
US6547401B2Apr 15, 2003
Projector
SEIKO EPSON CORP10 citations74
USRE40251EApr 22, 2008
Optical element, polarization illumination device, and projector
SEIKO EPSON CORP2 citations63
USRE39243EAug 22, 2006
Optical element, polarization illumination device, and projector
SEIKO EPSON CORP2 citations63
US7126648B2Oct 24, 2006
Liquid crystal projector comprising a plurality of light shielding members fixed between the lens array and the polarized light generator
SEIKO EPSON CORP2 citations61
US6994438B2Feb 7, 2006
Optical component casing, optical device and projector
SEIKO EPSON CORP6 citations60