Inventor
KANEDA YASUSHI
JP30 patents
⚠️ This page may combine multiple inventors who share the name “KANEDA YASUSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
25 patentsUS5666196ASep 9, 1997
Optical detection apparatus for detecting information relating to relative displacement of an object on whch a diffraction grating is formed
CANON KK174 citations99
US5880839AMar 9, 1999
Optical displacement measuring apparatus including a light-emitting element and an adjacent ball lens
CANON KK67 citations96
US5283434AFeb 1, 1994
Displacement detecting device with integral optics
CANON KK92 citations96
US5680211AOct 21, 1997
Apparatus for optically detecting displacement of an object using a synthesizing means utilizing a substrate with two diffraction gratings thereon
CANON KK41 citations93
US5661296AAug 26, 1997
Rotary encoder measuring substantially coinciding phases of interference light components
CANON KK24 citations93
US5657125AAug 12, 1997
Apparatus including a light-detecting element having a photo-electric conversion surface and an integral light blocking member
CANON KK27 citations93
US5621527AApr 15, 1997
Apparatus for measuring relative displacement between the apparatus and a scale which a grating is formed
CANON KK47 citations93
US5569913AOct 29, 1996
Optical displacement sensor
CANON KK49 citations93
US5557396ASep 17, 1996
Velocity information detecting apparatus
CANON KK33 citations93
US5483377AJan 9, 1996
Displacement detection apparatus
CANON KK33 citations93
US5390022AFeb 14, 1995
Displacement information detection apparatus for receiving a divergent light beam
CANON KK36 citations93
US6900939B2May 31, 2005
Polarization insensitive beam splitting grating and apparatus using it
CANON KK23 citations92
US6674066B1Jan 6, 2004
Encoder
CANON KK20 citations92
US6618218B1Sep 9, 2003
Displacement detecting apparatus and information recording apparatus
CANON KK28 citations92
US5537210AJul 16, 1996
Rotation detecting apparatus and scale having a multi helix diffraction grating for the same
CANON KK27 citations92
US5534693AJul 9, 1996
Optical displacement detection apparatus employing diffraction gratings and a reference position sensor located on the scale
CANON KK52 citations92
US5448358ASep 5, 1995
Optical apparatus and displacement-information measuring apparatus using the same
CANON KK34 citations92
US5760392AJun 2, 1998
Scale for use with a displacement sensor
CANON KK28 citations91
US6473184B1Oct 29, 2002
Interferometer which divides light beams into a plurality of beams with different optical paths
CANON KK15 citations84
US5742391AApr 21, 1998
Optical type sensor for use as an optical measuring head or optical pickup
CANON KK17 citations83
US6259531B1Jul 10, 2001
Displacement information measuring apparatus with hyperbolic diffraction grating
CANON KK9 citations74
US5574559ANov 12, 1996
Displacement detection apparatus using multiple displacement detection signals formed by a multiple phase combination grating
CANON KK14 citations74
US6657181B1Dec 2, 2003
Optical element used in compact interference measuring apparatus detecting plurality of phase difference signals
CANON KK11 citations73
US7375820B2May 20, 2008
Interference measuring apparatus for detecting a plurality of stable phase difference signals
CANON KK2 citations62
US7034947B2Apr 25, 2006
Compact interference measuring apparatus for detecting the magnitude and direction of positional deviation
CANON KK2 citations62