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8993955 Encoder and apparatus using the same  
The encoder includes a scale including first and second periodic patterns, and a detector relatively movable with respect to the scale and whose detection state is switchable between a first...
8969789 Rotary encoder and method of detecting abnormality of rotary encoder  
A signal output unit generates an A phase output signal of a rectangular wave and a B phase output signal of a rectangular wave from the A phase sinusoidal wave signal and the B phase sinusoidal...
8937278 Rotation angle detecting apparatus  
A rotation angle detecting apparatus comprises a shaft portion space formed in a rotation shaft, a bearing holder space, a first condenser lens, a second condenser lens to face the first condenser...
8883090 Sample collector and components thereof  
To provide a protective coat on a refrigerated sample collector for a corrosive environment a unitary frame includes a support unit with condenser and evaporator coils mounted to the support unit...
8847144 Enhanced optical reflective encoder  
An optical encoder and optical encoding system are disclosed. Specifically, an encoder having a light detector elevated relative to a light source is described. The relative height difference...
8809764 Absolute position measuring encoder  
An absolute position measuring encoder having an ABS/INC integrated pattern obtained by integrating an absolute pattern and an incremental pattern together is provided. The absolute position...
8772705 Interpolation circuitry for optical encoders  
Disclosed are various embodiments of circuitry and methods for generating interpolated signals in an optical encoder. The optical encoder configurations and circuitry disclosed herein permit very...
8710425 Encoder that optically detects positional information of a moving body from different optical paths lengths  
An encoder emits modulated light from a light source section and lets a first light and a second light separated from the modulated light interfere with each other in a moving grating. In the...
8698071 Rotary encoder having multiple slit arrays, which detects rotation angle  
A rotary encoder 100 includes a scale portion 201 in which a first slit array 202 having slits, the number of which is S1, and a second slit array 203 having slits, the number of which is S2, are...
8659448 Movement detection device  
Provided is a rotation detection device that detects a rotational direction and amount of a rotatable operation member. The detection device manages to reduce the rotation detection pitch while...
8637804 Rotary position encoder  
A rotary position encoder for determining a rotary position of a shaft includes a rigid substrate having a planar surface and mounted on the shaft to rotate with the shaft; an optical disk having...
8610051 Incremental optical encoder  
The invention relates to optical encoders providing binary logic signals representing increments of relative position of two elements of the encoder, the two elements being mobile with respect to...
8598509 Optical encoder  
An optical encoder comprising a set of light sources configured to emit light rays in a serial manner, an encoded scale configured to reflect at least a portion of the emitted light rays, and a...
8552362 System and method for linear and angular measurements of a moving object  
A system and method for measuring linear and angular displacement of a moving object, such as an autonomous moving object. In one embodiment, the system comprises at least one optical mouse sensor...
8546743 Encoder in which the relative displacement between the encoder scale and encoder head is detected  
An encoder detects a relative displacement between an encoder scale and an encoder head. The encoder head incorporates a light source, a light-receiving element to receive light from the light...
8546747 Rotary encoder and optical apparatus  
The rotary encoder includes a rotary scale in which a spiral pattern is formed, and a sensor unit including a light source and a first light-receiving part that detects light entering via the...
8525102 Optical encoding system and optical encoder having an array of incremental photodiodes and an index photodiode for use in an optical encoding system  
An optical encoder is disclosed. Specifically, a three-channel encoder is disclosed which utilizes a single track for all three channels. An index channel is provided on the same optical track as...
8513589 Indexed optical encoder, method for indexing an optical encoder, and method for dynamically adjusting gain and offset in an optical encoder  
An optical encoder may include an encoder disk, an illumination system, and a detector to detect light diffracted from the encoder disk. The encoder disk may include a signal track comprising a...
8497469 Rotary encoder that detects rotation angle  
A rotary encoder 100 includes a scale 201 that includes a spiral pattern 501 and a radial pattern 502 to be rotatable around a rotation axis, a first sensor unit 301 that detects a light...
8492704 Encoder and method of precisely indicating positions of one member relative to a second member  
An encoder and method for precisely indicating the position of a first member with respect to a second member by utilizing a pattern of machine-sensible elements carried on a single track of the...
8492703 Lens aberration correction in a doubly telecentric displacement sensor  
A method and apparatus for suppressing loss of scale image contrast due to interference effects from optical path length differences, including lens profile aberrations, are provided in a...
8476579 Indexed optical encoder, method for indexing an optical encoder, and method for dynamically adjusting gain and offset in an optical encoder  
An optical encoder may include an encoder disk, an illumination system, and a detector to detect light diffracted from the encoder disk. The encoder disk may include a signal track comprising a...
8399825 Sensor and method for determining an angular position of a rotor  
A sensor for sensing the angular position of a rotor includes a code disk rotatable with the rotor. A first light guide is rotatable with the rotor. The light guide directs light from a light...
8373110 System and method for linear and angular measurements of a moving object  
A system and method for measuring linear and angular displacement of a moving object, such as an autonomous moving object. In one embodiment, the system comprises at least one optical mouse sensor...
8357891 Speed detection device, image forming device, and computer readable storage medium storing speed detection program  
The present invention provides a speed detection device comprising: a detected body that includes a plurality of marks arranged along a first direction with intervals therebetween; a detection...
8356132 Position sensing system for a KVM switch  
A position sensing system controls selection of channels in a KVM switch having a plurality of channels. The system has a sensor interface for receiving a sensor reading indicating a current...
8350731 Complex-operation input device  
A complex-operation input device having an operable knob held in a rotatable and slidable manner includes a rotation sensor that detects rotation of the operable knob on the basis of displacement...
8330098 High resolution, high speed, miniaturized optical encoder  
Disclosed are various embodiments of a single track reflective optical encoder featuring current amplifiers disposed in the signal generating circuit thereof. Voltage amplifiers and their...
8330097 Angular correction method for rotary encoder  
An angular correction method is provided for a rotary encoder in which angular skip does not occur in determining an angle at a position of switching a combination of successive angular graduation...
8325066 Photoelectric encoder  
A photoelectric encoder includes: a scale having a grating formed with a predetermined period Ps; and a detector head being movable relative to the scale and including a light source and a light...
8242433 Centrifugal force based platform, microfluidic system including the same, and method of determining home position of the platform  
Provided are a centrifugal force based platform formed to be rotatable and including a home mark having a retro-reflective property of light, and a centrifugal force based microfluidic system...
8233357 Encoder capable of compensating for tilt, hard disk drive using the same, and servo track writing system for the hard disk drive  
An encoder is capable of being used to compensate for the tilting of a movable object in an apparatus. The encoder includes a fixed scale, and a movable scale integrated with an object that moves...
8188421 Optical encoder for detecting the relative displacement between an encoder scale and an encoder head  
An optical encoder comprises an encoder head and a scale having a second grating that has an optical pattern. The encoder head has a light emission unit to emit specific light to the scale, a...
8110792 Absolute position length measurement type encoder  
An absolute position length measurement type encoder includes: a scale in which an ABS pattern based on a pseudorandom code is provided; a light-receiving element for receiving bright and dark...
8081321 Scanning unit of an optical position measuring arrangement and position measuring arrangement having this scanning unit  
A scanning unit, by which a scale, which is movable in relation to the scanning unit in a measuring direction, can be optically scanned. The scanning unit including a detector arrangement and a...
8063355 Reflective multi-turn encoders with different light sensing systems  
Disclosed herein are a number of different embodiments of reflective multi-turn optical encoders with different light sensing systems. Three different basic configurations of reflective multi-turn...
8044339 Intensity-based optical encoder using digital diffractive optic regions  
An optical encoder and method for measuring displacement information using an optical encoder uses an encoder member with multiple digital diffractive optic regions to optically diffract an...
7994470 Photoelectric encoder  
The present invention relates to a photoelectric encoder including a scale having a grating (incremental pattern) of a predetermined pitch formed thereon and a light source (light-emitting...
7982176 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Absolute position length measurement type encoder
 
An absolute position length measurement type encoder includes: a scale in which an ABS pattern based on a pseudorandom code is provided; a light-receiving element for receiving bright and dark...
7943897 Optical encoder and electronic equipment  
This optical encoder includes a light emitting section and a plurality of light receiving elements placed so as to be aligned in one direction in an area where a light beam from the light emitting...
7916305 Surface reflection encoder scale and surface reflection encoder using the same  
A surface reflection encoder scale is used with a surface reflection encoder for detecting a relative movement amount of a member for making a relative move. The surface reflection encoder scale...
7902493 Rotation angle transmitter and method of scanning a code disc of a rotation angle transmitter  
An optical rotation angle transmitter includes a code disc that has a digital coding and an analog coding. The digital coding has multiple tracks and is configured so as to be secure against...
7858922 Position-measuring device  
A position-measuring device includes a scanning unit and a measuring graduation that is displaceable thereto in at least one measuring direction. The measuring graduation includes two...
7842957 Optical transceiver with reduced height  
A transceiver having a light source die, a photodetector die and a substrate is disclosed. The substrate has a first well in which the light source die is mounted and a second well in which the...
7825368 Absolute position length-measurement type encoder  
An absolute position length-measurement type encoder includes a scale having an incremental track, an absolute track, and a reference position track. The incremental track has incremental patterns...
7820956 Optical position transducer systems and methods employing reflected illumination for limited rotation motor systems  
A position transducer system is disclosed for a limited rotation motor that includes an illumination source that directs illumination toward an illumination reflector that rotates with a rotor of...
7797127 Method for determining two pseudo-sinusoidal signals in quadrature  
A method for determining two pseudo-sinusoidal signals in quadrature from a pseudo-sinusoidal signal transmitted by an encoder is provided. The method using a sensor arranged within reading...
7718952 Information carrier  
The invention relates to an information carrier (10), having a metal layer (40) with at least one track (14) in which marks (20) are disposed, which can be detected by means of light of a central...
7705289 Scanning unit for an optical position-measuring device  
A scanning unit for an optical position-measuring device includes a semiconductor light source and at least one downstream reflector element that has a defined optical effect on the beams of rays...
7649168 Triple grating optical encoder and modified triple grating optical encoder for displacement detection  
In a triple slit optical encoder, a first grating and a third grating are formed on separate members, and values of a first effective width W1 and a first pitch p1 of an optical pattern on the...