Inventor

MASUMOTO YOSHIHIRO

JP13 patents

Patents

13 patents

US5418583AMay 23, 1995

Optical illumination system and projection display apparatus using the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD145 citations97

US5719706AFeb 17, 1998

Illuminating apparatus, projection lens, and display apparatus including the illumination apparatus and the projection lens

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD59 citations96

US4943154AJul 24, 1990

Projection display apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD109 citations96

US6373629B1Apr 16, 2002

Polarized light illuminator and projecting type image display

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD31 citations92

US5649753AJul 22, 1997

Projection display apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD49 citations92

US5490006AFeb 6, 1996

Liquid crystal light valve apparatus with a pair of non-parallel phase difference plates

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD46 citations92

US6761457B2Jul 13, 2004

Optical illumination device and projection display device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD19 citations84

US7055959B2Jun 6, 2006

Projection display device and back projection display device using the display device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD9 citations73

US6966658B2Nov 22, 2005

Projection type display apparatus rear projection and multi-vision system

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD7 citations73

US4935758AJun 19, 1990

Projection display apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD18 citations73

US7255450B2Aug 14, 2007

Projection type display apparatus, rear projector and multi-vision system

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD2 citations62

US7204613B2Apr 17, 2007

Projection display device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD3 citations62

US7134757B2Nov 14, 2006

Projection type display apparatus, rear projection, and multi-vision system

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD2 citations62