Inventor
TSUJI SADAHIKO
JP62 patents
⚠️ This page may combine multiple inventors who share the name “TSUJI SADAHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
49 patentsUS5757423AMay 26, 1998
Image taking apparatus
CANON KK175 citations99
US6351333B2Feb 26, 2002
Optical element and optical system having the same
CANON KK105 citations97
US5572372ANov 5, 1996
Optical apparatus provided with a driving unit for moving a lens
CANON KK46 citations96
US5289318AFeb 22, 1994
Optical apparatus provided with a driving unit for moving a lens
CANON KK71 citations96
US5040881AAug 20, 1991
Image stabilization lens system
CANON KK35 citations93
US5461500AOct 24, 1995
Polarization converting apparatus and optical instrument having the same
CANON KK39 citations92
US5243462ASep 7, 1993
Image stabilizing apparatus
CANON KK31 citations92
US4998809AMar 12, 1991
Image-stabilizing optical device
CANON KK42 citations92
US4797700AJan 10, 1989
Diaphragm device
CANON KK38 citations92
US4477148AOct 16, 1984
Optical low-pass filter
CANON KK20 citations82
US4439018AMar 27, 1984
Zoom lens structure
CANON KK21 citations82
US4294529AOct 13, 1981
Camera
CANON KK21 citations82
US4094586AJun 13, 1978
Compact zoom lens
CANON KK21 citations82
US4963005AOct 16, 1990
Zoom lens having built-in diaphragm
CANON KK10 citations74
US4929068AMay 29, 1990
Conversion lens
CANON KK17 citations74
US4854679AAug 8, 1989
Photographic system having front conversion lens
CANON KK9 citations74
US4786150ANov 22, 1988
Zoom lens with beam splitter
CANON KK18 citations74
US4763998AAug 16, 1988
Compact zoom lens
CANON KK17 citations74
US4749266AJun 7, 1988
Compact zoom lens having a large aperture and good aberation correction over an extended zooming range
CANON KK15 citations74
US4720180AJan 19, 1988
High magnification range zoom lens
CANON KK7 citations74
US4708444ANov 24, 1987
Photographic objective
CANON KK11 citations74
US4696553ASep 29, 1987
Zoom lens having a large zoom ratio
CANON KK15 citations74
US4687303AAug 18, 1987
Zoom lens system
CANON KK8 citations74
US4673262AJun 16, 1987
Compact finder
CANON KK14 citations74
US4659187AApr 21, 1987
Zoom lens using elements made of plastic materials
CANON KK19 citations74
US4653874AMar 31, 1987
Zoom lens
CANON KK13 citations74
US4618219AOct 21, 1986
Zoom lens
CANON KK11 citations74
US4589031AMay 13, 1986
Video camera
CANON KK19 citations74
US4544250AOct 1, 1985
Optical system for camera with a viewfinder
CANON KK14 citations74
US4515446AMay 7, 1985
Zoom objective
CANON KK9 citations74
US4380377AApr 19, 1983
Compact zoom lens
CANON KK11 citations74
US4371261AFeb 1, 1983
Range finder
CANON KK17 citations74
US4368954AJan 18, 1983
Compact zoom objective
CANON KK8 citations74
US4336983AJun 29, 1982
Photographic objective stabilized against change of angular field during focusing
CANON KK7 citations74
US4318593AMar 9, 1982
Zoom lens assembly with two movable focusing lens groups
CANON KK19 citations74
US4247171AJan 27, 1981
Compact photographic lens with large aperture
CANON KK8 citations74
US4240699ADec 23, 1980
Zoom lens having extended focusing range
CANON KK13 citations74
US4200380AApr 29, 1980
Camera provided with means for giving information about photographing
CANON KK9 citations74
US4105291AAug 8, 1978
Large aperture zoom lens
CANON KK13 citations74
US3970367AJul 20, 1976
Zoom lens system
CANON KK7 citations74
US4178076ADec 11, 1979
Macro zoom lens
CANON KK10 citations71
US4113355ASep 12, 1978
Macro zoom lens
CANON KK10 citations71
US4626076ADec 2, 1986
Zoom lens
CANON KK13 citations67
US6188521B1Feb 13, 2001
Image displaying apparatus having magnification-changing system
CANON KK6 citations63
US5087935AFeb 11, 1992
Active external distance measuring system having an optical device in the light projection and light receiving paths to reduce parallax
CANON KK2 citations63
US4854681AAug 8, 1989
Compact zoom lens
CANON KK5 citations63
US4807982AFeb 28, 1989
Lens system of variable magnification range and having a supplementary lens unit
CANON KK2 citations63
US4712883ADec 15, 1987
Rear focus zoom lens
CANON KK6 citations63
US4618762AOct 21, 1986
In-focus position detecting apparatus
CANON KK4 citations63
TOKYO SHIBAURA ELECTRIC CO
1 patentShowing the top 50 of 62 patents by PatentIndex Score.