Inventor
TOIDE EIICHI
JP30 patents
Patents
30 patentsUS5765934AJun 16, 1998
Projection type display
MITSUBISHI ELECTRIC CORP123 citations98
US5142387AAug 25, 1992
Projection-type display device having light source means including a first and second concave mirrors
MITSUBISHI ELECTRIC CORP124 citations98
US5135300AAug 4, 1992
Projection color display apparatus
MITSUBISHI ELECTRIC CORP57 citations96
US5642229AJun 24, 1997
Projection lens unit
MITSUBISHI ELECTRIC CORP67 citations95
US4789978ADec 6, 1988
System and method of astigmatism correction in an optical head apparatus
MITSUBISHI ELECTRIC CORP25 citations93
US5745297AApr 28, 1998
Retrofocus lens system
MITSUBISHI ELECTRIC CORP42 citations92
US5570140AOct 29, 1996
Projection unit for projection type display apparatus
MITSUBISHI ELECTRIC CORP19 citations92
US5321789AJun 14, 1994
Projection display apparatus, and light guide tube/light valve for use in the same
MITSUBISHI ELECTRIC CORP33 citations92
US5216649AJun 1, 1993
Optical head with a tilt correction servo mechanism
MITSUBISHI ELECTRIC CORP43 citations92
US5130850AJul 14, 1992
Projection lens system
MITSUBISHI ELECTRIC CORP24 citations92
US5123729AJun 23, 1992
Projection display device
MITSUBISHI ELECTRIC CORP28 citations92
US5066138ANov 19, 1991
Optical head apparatus
MITSUBISHI ELECTRIC CORP31 citations92
US4817072AMar 28, 1989
Optical head utilizing diffraction grating
MITSUBISHI ELECTRIC CORP33 citations92
US5537167AJul 16, 1996
Projection type display apparatus
MITSUBISHI ELECTRIC CORP30 citations91
US5404246AApr 4, 1995
Projection lens system
MITSUBISHI ELECTRIC CORP33 citations91
US5739875AApr 14, 1998
Projection unit for projection type display apparatus
MITSUBISHI ELECTRIC CORP15 citations81
US5210627AMay 11, 1993
Optical record and reproduction apparatus with liquid crystal panel that rotates light followed by a polarizer or birefringent plate
MITSUBISHI ELECTRIC CORP13 citations74
US5148320ASep 15, 1992
Projection lens
MITSUBISHI ELECTRIC CORP16 citations74
US5138222AAug 11, 1992
Projection cathode ray tube having an interference filter
MITSUBISHI ELECTRIC CORP10 citations74
US4983002AJan 8, 1991
Optical head device
MITSUBISHI ELECTRIC CORP15 citations74
US4811329AMar 7, 1989
Optical head with laser having particular source of driving current
MITSUBISHI ELECTRIC CORP18 citations74
US4797545AJan 10, 1989
Optical head device having positionally adjustable parts
MITSUBISHI ELECTRIC CORP11 citations74
US5607216AMar 4, 1997
Projection display apparatus
MITSUBISHI ELECTRIC CORP11 citations73
US5572364ANov 5, 1996
Projection lens system
MITSUBISHI ELECTRIC CORP17 citations73
US5337093AAug 9, 1994
Projection television system including a plurality of display elements with corresponding optical axes incident to a screen at different points offset from the screen center
MITSUBISHI ELECTRIC CORP9 citations73
US4987566AJan 22, 1991
Optical head apparatus
MITSUBISHI ELECTRIC CORP11 citations73
US5582473ADec 10, 1996
Projection display apparatus
MITSUBISHI ELECTRIC CORP15 citations72
US5248518ASep 28, 1993
Projection cathode ray tube
MITSUBISHI ELECTRIC CORP2 citations63
US4835761AMay 30, 1989
Signal to noise ratio of optical head apparatus employing semiconductor laser beam source
MITSUBISHI ELECTRIC CORP5 citations63
US4888760ADec 19, 1989
Optical head apparatus
MITSUBISHI ELECTRIC CORP3 citations62