P

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 patents
US5587816ADec 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 patents

HAMAMATSU PHOTONICS KK

6 patents

AGC INC

5 patents