Inventor · disambiguated record
Tetsuharu Nishimura
Also filed as: NISHIMURA TETSUHARU
39 granted patents·1,125 citations·filing 1985–1995
98Inventor score
Files withCANON KK39
Top patents by PatentIndex Score
39 records- 0195US5283434ADisplacement detecting device with integral opticsCANON KK·Filed 1992·Granted Feb 1, 1994·92 cites·14 claims
- 0294US5129725AMethod of optically detecting position of object and position detecting apparatus using the methodCANON KK·Filed 1991·Granted Jul 14, 1992·123 cites·11 claims
- 0393US5021649ARelief diffraction grating encoderCANON KK·Filed 1990·Granted Jun 4, 1991·81 cites·12 claims
- 0492US5066130ADisplacement measuring apparatusCANON KK·Filed 1989·Granted Nov 19, 1991·57 cites·31 claims
- 0591US4868385ARotating state detection apparatus using a plurality of light beamsCANON KK·Filed 1988·Granted Sep 19, 1989·51 cites·38 claims
- 0689US4930895AEncoder for forming interference fringes by re-diffracted lights from an optical type scale and photoelectrically converting the interference fringes to thereby detect the displacement of the scaleCANON KK·Filed 1988·Granted Jun 5, 1990·48 cites·34 claims
- 0788US4979826ADisplacement measuring apparatusCANON KK·Filed 1989·Granted Dec 25, 1990·44 cites·22 claims
- 0885US4829342AMoving state detection apparatusCANON KK·Filed 1986·Granted May 9, 1989·37 cites·15 claims
- 0980US5390022ADisplacement information detection apparatus for receiving a divergent light beamCANON KK·Filed 1993·Granted Feb 14, 1995·36 cites·25 claims
- 1079US4970388AEncoder with diffraction grating and multiply diffracted lightCANON KK·Filed 1989·Granted Nov 13, 1990·28 cites·30 claims
- 1178US4682237APhotographic optical apparatusCANON KK·Filed 1985·Granted Jul 21, 1987·16 cites·28 claims
- 1277US5038032AEncoder incorporating a displaceable diffraction gratingCANON KK·Filed 1990·Granted Aug 6, 1991·33 cites·26 claims
- 1377US5000542AOptical type encoderCANON KK·Filed 1989·Granted Mar 19, 1991·26 cites·21 claims
- 1476US5026985AMethod and apparatus for detecting a reference position of a rotating scale with two sensorsCANON KK·Filed 1989·Granted Jun 25, 1991·24 cites·30 claims
- 1574US5146085AEncoder with high resolving power and accuracyCANON KK·Filed 1990·Granted Sep 8, 1992·22 cites·10 claims
- 1673US5436724AApparatus for measuring relative movement using a diffraction grating having an orthogonally polarized input beamCANON KK·Filed 1992·Granted Jul 25, 1995·28 cites·10 claims
- 1773US5051579AOptical scale encoder with light intensity alarmCANON KK·Filed 1990·Granted Sep 24, 1991·29 cites·9 claims
- 1872US5059791AReference position detecting device utilizing a plurality of photo-detectors and an encoder using the deviceCANON KK·Filed 1990·Granted Oct 22, 1991·27 cites·48 claims
- 1971US5067089ADevice having signal interpolation circuit and displacement measuring apparatus comprising the deviceCANON KK·Filed 1989·Granted Nov 19, 1991·20 cites·20 claims
- 2067US5568337AHead positioning using a disk drive mounted to a rotating tableCANON KK·Filed 1995·Granted Oct 22, 1996·22 cites·6 claims
- 2167US5101102ARotary encoder having a plurality of beams emitted by a diffraction gratingCANON KK·Filed 1990·Granted Mar 31, 1992·23 cites·14 claims
- 2262US4967072AInterferometric rotating condition detection apparatusCANON KK·Filed 1990·Granted Oct 30, 1990·19 cites·44 claims
- 2362US4677489AImage pickup apparatusCANON KK·Filed 1985·Granted Jun 30, 1987·17 cites·19 claims
- 2461US5036192ARotary encoder using reflected lightCANON KK·Filed 1990·Granted Jul 30, 1991·19 cites·24 claims
- 2561US5017777ADiffracted beam encoderCANON KK·Filed 1989·Granted May 21, 1991·14 cites·34 claims
- 2661US4975570ARotary encoder using multiple diffracted beams having co-incident pathsCANON KK·Filed 1990·Granted Dec 4, 1990·18 cites·32 claims
- 2760US5438586AApparatus with light-emitting element and method for producing itCANON KK·Filed 1993·Granted Aug 1, 1995·27 cites·3 claims
- 2860US5159192AEncoder and scanning system using a scale having a non-uniform pitchCANON KK·Filed 1991·Granted Oct 27, 1992·17 cites·24 claims
- 2959US4933673AEncoderCANON KK·Filed 1988·Granted Jun 12, 1990·15 cites·5 claims
- 3058US5198873AEncoder utilizing interference using multi-mode semiconductor laserCANON KK·Filed 1991·Granted Mar 30, 1993·16 cites·17 claims
- 3157US5067813AOptical apparatus for measuring displacement of an objectCANON KK·Filed 1989·Granted Nov 26, 1991·12 cites·18 claims
- 3257US5038491AScale for use for measurement of the displacement of an object to be examined, and displacement measuring apparatusCANON KK·Filed 1989·Granted Aug 13, 1991·12 cites·6 claims
- 3357US4609272AFinder system of high image magnificationCANON KK·Filed 1985·Granted Sep 2, 1986·7 cites·16 claims
- 3456US4592636AView finder optical systemCANON KK·Filed 1985·Granted Jun 3, 1986·17 cites·12 claims
- 3554US4998798AEncoder having long length measuring strokeCANON KK·Filed 1989·Granted Mar 12, 1991·10 cites·15 claims
- 3649US5404220AMeasuring method and measuring apparatus for determining the relative displacement of a diffraction grating with respect to a plurality of beamsCANON KK·Filed 1992·Granted Apr 4, 1995·11 cites·14 claims
- 3748US4912320AOptical type encoder including diffraction grating for producing interference fringes that are processed to measure displacementCANON KK·Filed 1989·Granted Mar 27, 1990·8 cites·7 claims
- 3846US5532819ARotary detector having an optical system for guiding two diffracted lightsCANON KK·Filed 1995·Granted Jul 2, 1996·11 cites·9 claims
- 3942US5126562AEncoder for setting optical path lengths of related beamsCANON KK·Filed 1990·Granted Jun 30, 1992·8 cites·11 claims
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