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Match Document Document Title
7391011 Optical encoder capable of detecting absolute position  
In two phases signals (A, B) outputted from a scale or a scale having a discontinuous portion provided in its incidental member to a light receiving portion, a region in which amplitudes of the two...
7391009 Angle-measuring system having irregular reference mark that is dedicated without time delay  
An angle-measuring system comprising at least one transmitter provided with a number of complementary signal-generating elements disposed in pairs and creating a pattern of signals. The elements...
7385179 Optical encoder for measuring displacement  
At least one exemplary embodiment is directed to an optical encoder which includes a first diffraction grating having a desired optical effective aperture ratio at an appropriate gap position so as...
7385178 Reflective encoders with various emitter-detector configurations  
Optical encoders having one or more of a number of disclosed features are disclosed. The features of the optical encoder in accordance with the present invention include a symmetrical (for example,...
7378643 Optical projection encoder with patterned mask  
An Optical Projecting Encoder (“OPE”) having an emitter module for transmitting emitted optical radiation through a mask to a moving object, and a detector module for receiving reflected...
7377435 Optical encoder  
An optical encoder is disclosed, in particular, which has a light sensing element with light-sensing cells arranged in a matrix. The light sensing element repeatedly detects the same reflective...
7372625 Device for retaining optical components  
A device for retaining optical components includes a number of open orifices disposed next to one another in an arrangement. A raceway corresponding to the arrangement is provided, the raceway...
7368705 Absolute encoder employing linked sub-encoders and beat track  
An absolute encoder employs multiple sub-encoders of different resolutions and a linking algorithm for combining the sub-encoder outputs to form an accurate, high-resolution position estimate. The...
7358865 Optical encoder and apparatus using optical encoder  
An optical encoder includes a cylindrical reflective scale, a point light source for irradiating the reflective scale, and light-receiving elements for receiving the light beams reflected by the...
7358479 Method and computed tomography gantry for measurement of rotation angle of rotor  
In a gantry for an x-ray computed tomography apparatus with a rotor and a stator and a device for measurement of the rotation angle as well as a method for measurement of the rotation angle, a disc...
7355165 Optical encoder and method for using same  
An optical encoder, a system and a method for outputting a signal are provided. The optical encoder and the system have a shaft extending from an interior of a housing. A circuit board having a...
7348546 Position measuring system with a scanning unit having a reference pulse signal detection unit  
A position measuring system having a scale that includes an incremental graduation track, which extends in a measuring direction, the incremental graduation track having a periodic arrangement of...
7348543 Optical encoder with hollow light guide for indicating the angular position of a rotary shaft  
An optical encoder assembly and a method for measuring a rotation angle in which optical beams are spread over the circumference of a rotating optical disk by means of optical guides (OG). In the...
7332709 Photoelectric encoder  
A photoelectric encoder includes a light source of an illumination light beam. The encoder also includes a movable grating which has grating lines and which is displaceable in a direction...
7309855 Reflective encoder with light shield and electronic device using such reflective encoder  
A reflection encoder is disclosed having a light emitting element in a light receiving element that are separated by a light shielding body that prevents unwanted light from entering the light...
7304295 Method and system of detecting eccentricity and up/down movement of a code wheel of an optical encoder set  
A system and method of measuring a rotational motion of a code wheel measures a rotational movement of the code wheel including an error component due to a non-rotational movement of the code...
7304294 Reflective encoder with reduced background noise  
An encoder having a code scale and an emitter detector module is disclosed. The code scale includes alternating reflective and opaque stripes. The emitter-detector module includes a light source...
7301142 Optical encoder photodetector array with multiple resolutions  
A photodetector for an optical encoder has plural sets of segmented photodiodes, each set of which is made by two adjoining segmented photodiodes capable of coping with a scale slit having a...
7301141 Photoelectric encoder and electric device provided with the same  
A photoelectric encoder of the invention is furnished with a light-emitting element and a light-receiving element for sending and receiving light that are disposed in opposition to one another, and...
7297935 Position-measuring device  
A position-measuring device includes: a measuring graduation provided on a measuring standard device arranged around in ring-like fashion; a scanning unit for optically scanning the measuring...
7280049 Encoder runout error correction circuit  
A novel encoder system adapted for use in print architecture at least includes: a codewheel coupled to a rotating print architecture element; a first encoder sensor mounted at a first position...
7265338 Photoelectric encoder using an incoherent semiconductor light source  
A photoelectric encoder is provided, which emits light from a light source to a main scale and an index scale that can relatively move with respect to each other and obtains a light-receiving...
7230230 Apparatus for adjusting a signal and prohibiting adjustment of the signal based on a position of a movable member  
A signal adjusting apparatus includes a movable member, a setting device, and a prohibiting device. The movable member is movable in a movable range to have the electrical signal adjusted in...
7214928 Scanning unit for an optical position measuring device  
A scanning unit for an optical position measuring device, the scanning unit having a structured optoelectronic photodetector that includes: a semiconductor substrate, a plurality of...
7202468 Power transfer device with contactless optical encoder and color reflective surface  
An angular offset sensing device includes an optical encoder having a light generating element and a light sensor. An armature includes a reflective surface having a generally semicircular shape...
7196320 Fiber optic encoder for position sensing  
A passive all fiber optic encoder that will be able to determine speed, position, and direction of movement of a movable object. The all passive encoder utilizes no electronics within the sensing...
7196319 Position-measuring device  
A position-measuring device for generating a measuring signal includes a track, which has an incremental graduation having a specified graduation period that extends along a measuring direction,...
7193204 Multi-track optical encoder employing beam divider  
An optical encoder includes a sensor head, an encoder scale, and an optical wavefront dividing element. The sensor head includes a substrate, a light source, a first optical detector, and a second...
7183538 Apparatus for adjusting a signal based on a position of a movable member  
A signal adjusting apparatus comprises a movable member, a first detecting device, a second detecting device, and a correction device. The member is movable in a movable range composed of a...
7182258 Enhanced reflective optical encoder  
An Enhanced Reflective Optical Encoder (“EROE”) having an emitter module for transmitting emitted optical radiation to an encoded media and a detector module for receiving reflected optical...
7166833 Fiber optic remote reading encoder  
A system and method for determining the absolute position of a linear or rotary actuator. A code plate having a series of digital words thereon is associated with the linear or rotary actuator....
7164482 Position measuring system  
A position measuring system that includes a scale having a measuring graduation extending along a first line and a scanning device. The scanning device includes a light source that transmits light...
7164120 Position measuring instrument  
A method for position measurement that includes scanning a plurality of graduation periods of one incremental graduation by a detector arrangement extending over a length of one measurement range,...
7161139 Position-measuring system and method for operating a position-measuring system  
In a position measuring system and a method for operating such a position measuring system, e.g., for the purpose of producing at least one reference pulse signal, the position measuring system...
7154609 Interferential position measuring arrangement  
An interferential position measuring arrangement including a light source, which emits a beam of rays and an optical element, which converts the beam of rays emitted by the light source into an...
7145127 Optical encoding that utilizes total internal reflection  
A coding element such as a codewheel includes first and second surfaces that are configured with respect to each other and with respect to a light beam such that the light beam is reflected at the...
7145126 Optical position encoder device using incoherent light source  
An optical device that includes a grating (for example a moving reflective grating) and a light source disposed opposing a predetermined side of the grating. The optical device also includes a...
7138623 Power transfer device with contactless optical encoder and color reflective surface  
An angular offset sensing device includes an optical encoder having a light generating element and a light sensor. An armature includes a reflective surface having a generally semicircular shape...
7135673 Imaging rotation angle absolute encoder  
An angle absolute encoder comprises an encoded code rod that has code marks, such as pairs of fine code lines and coarse code lines. Light is reflected from or transmitted through the code marks...
7132647 Optical encoder  
A main scale of an optical displacement measuring apparatus has slits arranged on it at regular intervals, a part of which is a missing slit that does not allow light to pass through used for...
7126109 Encoder scale error compensation employing comparison among multiple detectors  
An encoder calculates position error values and applies compensation values to encoder position measurements in-situ. The encoder includes a scale and a multi-section detector for detecting a...
7105803 Rotary optical encoder  
A rotary optical encoder is described to provide the pole position of the rotor in a permanently magnetized motor. Using a simple opening design of code tracks and two light sensors along with a...
7102122 Methods and means for using a photosensor as an encoder and a trigger  
A method of using a photosensor as an encoder and a trigger in a production apparatus includes imaging natural surface features of a target, generating data frames of the surface features using the...
7098446 Photoelectric encoder  
A photoelectric encoder includes an optical receipt chip on which a plurality of photodiodes (PDs) are laid out along a measurement axis “X” so that these are organized into an array. The...
7095925 Optical phased array transmitter/receiver  
An optical phased array transmitter/receiver includes a plurality of waveguides each including an optical fiber and a light source coupled to the fibers in the waveguides. At least one grating is...
7092108 Method for determining a position and position measurement device for carrying out the method  
A method for position determination that includes generating first and second position-dependent scanning signals, transmitting the first and second position-dependent scanning signals from a...
7087890 Rotating-body control device  
A P-ECU controls an actuator which drives a shift control mechanism. An encoder signal acquisition unit acquires signals output from an encoder which detects a rotational angle of the actuator. A...
7082669 Method of manufacturing a substrate of a rotary encoder  
A two-phase rotary encoder is provided which includes a substrate for the encoder which is double-faced and has a copper-foil-bonded substrate etched thereon, a first ring-shaped electrode pattern...
7078677 Optical encoder disk having a region that continuously increases in size  
A code disk, an optical encoder using such a disk and a method thereof are described. The code disk includes a first region on the disk and a second region that is adjacent to the first region. The...
7065966 Position control method by motor drive and control unit  
A position control method by motor drive including of rotating a rotor of the motor drive according to the given target opening, and detecting the opening of a movable vane by an encoder, the motor...
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