Inventor
OOI YOSHIHARU
JP42 patents
⚠️ This page may combine multiple inventors who share the name “OOI YOSHIHARU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ASAHI GLASS CO LTD
25 patentsUS5587816ADec 24, 1996
LCD device including an illumination device having a polarized light separating sheet between a light guide and the display
ASAHI GLASS CO LTD242 citations99
US5245449ASep 14, 1993
Polymer dispersed liquid crystal color projection display apparatus
ASAHI GLASS CO LTD58 citations96
US5206746AApr 27, 1993
Transparent-scattering type optical device including a prism with a triangular longitudinal cross section
ASAHI GLASS CO LTD77 citations96
US6580674B1Jun 17, 2003
Phase shifter and optical head device mounted with the same
ASAHI GLASS CO LTD60 citations94
USRE38305ENov 11, 2003
LCD device including an illumination device having a polarized light separating sheet between a light guide and the display
ASAHI GLASS CO LTD35 citations92
USRE37377ESep 18, 2001
LCD device including an illumination device having a polarized light separating sheet between a light guide and the display
ASAHI GLASS CO LTD43 citations92
US5838404ANov 17, 1998
Display device with optical member having two parts in overlay relation to reflect light incident at particular angle
ASAHI GLASS CO LTD21 citations92
US5216531AJun 1, 1993
Projection type active matrix polymer dispersed liquid crystal display apparatus with particles of liquid crystal material randomly oriented
ASAHI GLASS CO LTD34 citations92
US7773489B2Aug 10, 2010
Liquid crystal lens element and optical head device
ASAHI GLASS CO LTD21 citations91
US7738344B2Jun 15, 2010
Liquid crystal lens element optical head device
ASAHI GLASS CO LTD24 citations90
US7430076B2Sep 30, 2008
Diffraction element
ASAHI GLASS CO LTD14 citations84
US7548359B2Jun 16, 2009
Double-wavelength light source unit and optical head device having four diffraction gratings
ASAHI GLASS CO LTD9 citations83
US7388822B2Jun 17, 2008
Liquid crystal lens element and optical head device
ASAHI GLASS CO LTD15 citations82
US6891147B2May 10, 2005
Wavelength-selective diffraction element and an optical head device
ASAHI GLASS CO LTD19 citations81
US7764354B2Jul 27, 2010
Multi-layer diffraction type polarizer and liquid crystal element
ASAHI GLASS CO LTD7 citations74
US5274480ADec 28, 1993
Projection type display apparatus having an aperture stop means including non-circular openings
ASAHI GLASS CO LTD16 citations74
US7710536B2May 4, 2010
Liquid crystal diffraction lens element and optical head device
ASAHI GLASS CO LTD7 citations72
US6917576B2Jul 12, 2005
Retarder and optical head device installing the same
ASAHI GLASS CO LTD8 citations72
US7738346B2Jun 15, 2010
Polarizing diffraction element and optical head device
ASAHI GLASS CO LTD6 citations63
US7079202B2Jul 18, 2006
Multi-layer diffraction type polarizer and liquid crystal element
ASAHI GLASS CO LTD2 citations63
US8565058B2Oct 22, 2013
Liquid crystal alignment film, process for its production, optical element using the liquid crystal alignment film, and optical information writing/reading device
ASAHI GLASS CO LTD2 citations62
US7688700B2Mar 30, 2010
Phase correction element and optical head device
ASAHI GLASS CO LTD6 citations62
US7719657B2May 18, 2010
Liquid crystal lens element and optical head device
ASAHI GLASS CO LTD3 citations61
US7564504B2Jul 21, 2009
Phase plate and an optical data recording/reproducing device
ASAHI GLASS CO LTD1 citations52
US7835252B2Nov 16, 2010
Optical head apparatus
ASAHI GLASS CO LTD0 citations42
AG TECHNOLOGY CORP
6 patentsUS5798805AAug 25, 1998
Projection type display apparatus
AG TECHNOLOGY CORP103 citations98
US5754260AMay 19, 1998
Projection type color liquid crystal optical apparatus
AG TECHNOLOGY CORP116 citations97
US5648860AJul 15, 1997
Projection type color liquid crystal optical apparatus
AG TECHNOLOGY CORP96 citations95
US5844638ADec 1, 1998
Light source apparatus using a cone-shaped element and an applied apparatus thereof
AG TECHNOLOGY CORP39 citations92
US5283675AFeb 1, 1994
Liquid crystal display element with electrode having concave-convex surface at liquid crystal side
AG TECHNOLOGY CORP46 citations92
US5659409AAug 19, 1997
Light source apparatus using a cone-like material and an applied apparatus thereof
AG TECHNOLOGY CORP15 citations73
HAMAMATSU PHOTONICS KK
6 patentsUS4968881ANov 6, 1990
Voltage detector using electro-optic material having anti-reflective coatings
HAMAMATSU PHOTONICS KK21 citations80
US5208696AMay 4, 1993
Spatial light modulating device with CRT input image
HAMAMATSU PHOTONICS KK10 citations74
US4794033ADec 27, 1988
Optical joint comprising antireflection films
HAMAMATSU PHOTONICS KK9 citations74
US4763996AAug 16, 1988
Spatial light modulator
HAMAMATSU PHOTONICS KK7 citations74
US4717893AJan 5, 1988
Spatial light modulator
HAMAMATSU PHOTONICS KK7 citations74
US4923287AMay 8, 1990
Spatial light modulating devices utilizing electro-optic crystal
HAMAMATSU PHOTONICS KK3 citations63
AGC INC
5 patentsUS10228500B2Mar 12, 2019
Optical filter and imaging device
AGC INC7 citations82
US10683233B2Jun 16, 2020
Light selective transmission type glass and laminated substrate
AGC INC4 citations73
US10746908B2Aug 18, 2020
Optical filter and imaging device
AGC INC1 citations62
US10310150B2Jun 4, 2019
Near-infrared cut filter and solid-state imaging device
AGC INC1 citations58
US11378877B2Jul 5, 2022
Homogenizer, illuminating optical system, and illuminator
AGC INC0 citations45