Inventor
KITAGISHI NOZOMU
JP54 patents
Patents
50 patentsUS5751480AMay 12, 1998
Plate-like polarizing element, a polarizing conversion unit provided with the element, and a projector provided with the unit
CANON KK148 citations99
US5270857ADec 14, 1993
Optical system for stabilizing an image
CANON KK73 citations96
US5231431AJul 27, 1993
Projection type display apparatus
CANON KK58 citations96
US4842395AJun 27, 1989
Finder of variable magnification
CANON KK69 citations96
US4810070AMar 7, 1989
Lens system having a good image performance for white light
CANON KK73 citations96
US4341953AJul 27, 1982
Focus detecting system
CANON KK58 citations96
US5182671AJan 26, 1993
Variable magnification optical system having a capability of stabilizing the image
CANON KK48 citations93
US5069537ADec 3, 1991
Image deflecting device
CANON KK27 citations93
US5011272AApr 30, 1991
Compact zoom lens
CANON KK39 citations93
US4974950ADec 4, 1990
Optical system for deflecting image
CANON KK38 citations93
US4907868AMar 13, 1990
Optical system for deflecting image
CANON KK51 citations93
US4859040AAug 22, 1989
Optical system having gradient-index lens and method for correcting aberrations
CANON KK44 citations93
US4844602AJul 4, 1989
Optical system for deflecting image
CANON KK49 citations93
US4842386AJun 27, 1989
Variable focal length objective
CANON KK29 citations93
US4776679AOct 11, 1988
Objective of variable focal length
CANON KK35 citations93
US4629294ADec 16, 1986
Zoom lens
CANON KK26 citations93
US4367463AJan 4, 1983
Information mark display device
CANON KK34 citations93
US4348084ASep 7, 1982
Tele-photographic lens of large aperture ratio
CANON KK33 citations93
US5537168AJul 16, 1996
Projection optical apparatus comprising automatic adjustment unit
CANON KK45 citations92
US5253005AOct 12, 1993
Small-sized camera
CANON KK21 citations92
US5179473AJan 12, 1993
Zoom lens
CANON KK27 citations92
US5096288AMar 17, 1992
Projection apparatus
CANON KK29 citations92
US4830477AMay 16, 1989
Zoom lens capable of obtaining focal lengths beyond a variable focal length range
CANON KK34 citations92
US7190519B1Mar 13, 2007
Plate-like polarizing element, a polarizing conversion unit provided with the element, and a projector provided with the unit
CANON KK12 citations84
US7038722B2May 2, 2006
Optical imaging system for suppressing the generation of red-toned ghosting particularly when there is background light
CANON KK12 citations84
US4907866AMar 13, 1990
Objective of variable focal length
CANON KK19 citations82
US4547663AOct 15, 1985
Focus detecting apparatus with a compensation mask
CANON KK19 citations82
US4241983ADec 30, 1980
Telephoto lens
CANON KK21 citations82
US5124839AJun 23, 1992
Phase-type focusing screen
CANON KK12 citations74
US5089835AFeb 18, 1992
Phase-type diffusing plate
CANON KK11 citations74
US5054898AOct 8, 1991
Compact high-range varifocal objectives
CANON KK13 citations74
US4949107AAug 14, 1990
Camera having telescopic capability
CANON KK9 citations74
US4865434ASep 12, 1989
Zoom lens capable of selecting a focal length beyond a standard focal length range
CANON KK15 citations74
US4781446ANov 1, 1988
Zoom lens having a capability of introducing special features into image formats
CANON KK14 citations74
US4752121AJun 21, 1988
Zoom lens
CANON KK15 citations74
US4711534ADec 8, 1987
Zoom lens able to obtain focal lengths beyond the zooming range
CANON KK9 citations74
US4695133ASep 22, 1987
High range zoom lens
CANON KK12 citations74
US4666257AMay 19, 1987
Compact zoom lens
CANON KK20 citations74
US4659189AApr 21, 1987
Zoom lens of reduced total length
CANON KK9 citations74
US4650988AMar 17, 1987
Image reading apparatus with an area-type beam splitter
CANON KK15 citations74
US4639096AJan 27, 1987
High range zoom lens
CANON KK15 citations74
US4586786AMay 6, 1986
Area beam type splitter
CANON KK16 citations74
US4500188AFeb 19, 1985
Focusing device for a camera
CANON KK8 citations74
US4467188AAug 21, 1984
Device for splitting light from an objective lens
CANON KK8 citations74
US5303087AApr 12, 1994
Retrofocus type lens
CANON KK15 citations73
US4310231AJan 12, 1982
Close-up copy photography apparatus
CANON KK13 citations73
US4974947ADec 4, 1990
Refractive index distribution type meniscus lens and optics
CANON KK3 citations63
US4955715ASep 11, 1990
Psuedo format camera
CANON KK6 citations63
US4571033AFeb 18, 1986
Zoom lens
CANON KK4 citations63
US4508433AApr 2, 1985
Telephoto objective
CANON KK5 citations63
Showing the top 50 of 54 patents by PatentIndex Score.