Inventor
KOHAYAKAWA YOSHIMI
JP60 patents
Patents
50 patentsUS5713047AJan 27, 1998
Eye fundus photographing apparatus
CANON KK108 citations98
US5231430AJul 27, 1993
Ophthalmic apparatus
CANON KK132 citations98
US6309068B1Oct 30, 2001
Eye examining apparatus
CANON KK57 citations96
US5825460AOct 20, 1998
Visual function measuring apparatus
CANON KK79 citations96
US5523808AJun 4, 1996
Ophthalmic apparatus having an intraocular pressure measuring system
CANON KK73 citations96
US5090798AFeb 25, 1992
Applied intensity distribution controlling apparatus
CANON KK70 citations96
US4717952AJan 5, 1988
Medical television system
CANON KK70 citations96
US4372655AFeb 8, 1983
Automatic eye-refractometer
CANON KK56 citations96
US4293198AOct 6, 1981
Eye refractometer
CANON KK62 citations96
US6304723B1Oct 16, 2001
Retinal camera
CANON KK23 citations93
US5995759ANov 30, 1999
Stereoscopic image apparatus
CANON KK23 citations93
US5889577AMar 30, 1999
Optical apparatus or apparatus for detecting direction of line of sight, and various kinds of same apparatus using the same
CANON KK49 citations93
US5847805ADec 8, 1998
Scan imaging device for forming a stereoscopic image of the eye
CANON KK37 citations93
US5777718AJul 7, 1998
Eye refractometer
CANON KK35 citations93
US5757463AMay 26, 1998
Eye examining apparatus scanning the eye with a light beam
CANON KK35 citations93
US5675399AOct 7, 1997
Ophthalmic apparatus
CANON KK50 citations93
US5657116AAug 12, 1997
Ocular lens measuring apparatus
CANON KK27 citations93
US5557321ASep 17, 1996
Fundus camera or opthalmic apparatus comprising a flash light source system
CANON KK28 citations93
US5523809AJun 4, 1996
Eye refraction measuring apparatus including optical path separating member light beam separating member, and/or light diameter changing means
CANON KK26 citations93
US5489978AFeb 6, 1996
Lens measuring apparatus
CANON KK24 citations93
US5483305AJan 9, 1996
Eye examining apparatus
CANON KK52 citations93
US5420650AMay 30, 1995
Eye examining apparatus including an eye refraction measuring system and eye fundus examining system
CANON KK21 citations93
US5325134AJun 28, 1994
Keratometer
CANON KK38 citations93
US5280313AJan 18, 1994
Ophthalmic measuring apparatus
CANON KK27 citations93
US5231460AJul 27, 1993
Automatic lens meter
CANON KK24 citations93
US4826315AMay 2, 1989
Lens meter
CANON KK26 citations93
US4820037AApr 11, 1989
Apparatus for measuring the refractive power of an eye
CANON KK38 citations93
US4609287ASep 2, 1986
Method of and apparatus for measuring refractive characteristics
CANON KK38 citations93
US4452517AJun 5, 1984
Focusing system for eye-ground camera
CANON KK49 citations93
US4252420AFeb 24, 1981
Ophthalmoscopical apparatus provided with adjustment system
CANON KK49 citations93
US5237351AAug 17, 1993
Visual target apparatus
CANON KK36 citations92
US5037194AAug 6, 1991
Ophthalmologic apparatus and method of compounding the image of an eye to be examined
CANON KK36 citations92
US4830483AMay 16, 1989
Laser applying apparatus
CANON KK48 citations92
US4697895AOct 6, 1987
Automatic optometer
CANON KK33 citations92
US4421391ADec 20, 1983
Auto eye-refractometer
CANON KK49 citations92
US4376573AMar 15, 1983
Apparatus for measuring the refractive power of the eye
CANON KK49 citations92
US4102563AJul 25, 1978
Eye fundus camera free from undesired reflected and diffused light beams
CANON KK41 citations92
US4600012AJul 15, 1986
Apparatus for detecting abnormality in spinal column
CANON KK41 citations91
US6131574AOct 17, 2000
Ophthalmological apparatus
CANON KK19 citations84
US6079830AJun 27, 2000
Eye measuring apparatus having signal processing means for calculating eye information
CANON KK18 citations84
US5144346ASep 1, 1992
Ophthalomological apparatus for alignment and refraction
CANON KK20 citations82
US4634241AJan 6, 1987
Stereoscopic microscope
CANON KK20 citations82
US4412728ANov 1, 1983
Focusing apparatus for eye-fundus examining instrument
CANON KK22 citations82
US4257687AMar 24, 1981
Eye examining instrument with photo-detecting system
CANON KK25 citations82
US4196979AApr 8, 1980
Method and device for detecting distance between eye-examining instrument and eye
CANON KK23 citations82
US4146310AMar 27, 1979
Ophthalmoscopic optical system
CANON KK26 citations82
US6685318B2Feb 3, 2004
Ophthalmologic apparatus
CANON KK10 citations74
US5903336AMay 11, 1999
Eye examining apparatus having a driver for driving an eye examining system
CANON KK13 citations74
US5781275AJul 14, 1998
Eye refractometer and eye refractive power measuring apparatus for electro-optically measuring the refractive power of the eye
CANON KK9 citations74
US5585872ADec 17, 1996
Ophthalmic measuring apparatus for determining the shape of the cornea of an eye
CANON KK13 citations74
Showing the top 50 of 60 patents by PatentIndex Score.