| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 356623000 | Triangulation | 34 |
| 20080239327 | GLOBAL CALIBRATION FOR STEREO VISION PROBE - A method for global calibration of a multi-view vision-based touch probe measurement system is provided which encompasses calibrating camera frame distortion errors as well as probe form errors. The only required features in the calibration images are the markers on the touch probe. The camera frame distortion calibration comprises a process that depends on a portable calibration jig and the touch probe, but that process is unaffected by probe form distortion errors in the touch probe and/or tip. The probe tip position calibration depends on applying the results of the camera, frame distortion calibration. When the same probe tip is used throughout the global calibration, the probe tip position calibration uses images from the set of images used by the camera frame distortion calibration. The global calibration method is particularly advantageous for low cost portable versions of multi-view vision-based touch probe measurement systems. | 10-02-2008 |
| 20080252907 | Apparatus and Method for Determining an Elevation of Working Tools Based on a Laser System - An apparatus for determining an elevation of a working tool relative to a reference plane, includes a rotary laser system, a radio unit and a detector. The rotary laser system emits a rotating laser beam in a plane inclined relative to the reference plane. The radio unit is configured to measure a distance between the working tool and the rotary laser system and the detector is mounted on the working tool for detecting the laser beam. The elevation of the working tool can be determined on a basis of the inclination angle and the distance between the working tool and the rotary laser system. | 10-16-2008 |
| 20080285059 | APPARATUS AND METHOD FOR IN-SITU MONITORING OF WAFER BONDING TIME - An apparatus and a method for semiconductor wafer bonding provide in-situ and real time monitoring of semiconductor wafer bonding time. Deflection of the wafer edges during the last phase of the direct bonding process indicates the end of the bonding process. The apparatus utilizes a distance sensor to measure the deflection of the wafer edges and the bonding time is measured as the time between applying the force (bonding initiation) and completion of the bonding process. The bonding time is used as a real-time quality control parameter for the wafer bonding process. | 11-20-2008 |
| 20090128833 | Dual mode depth imaging - Dual mode depth imaging system and method is provided, the system comprising a first and second image sensors and a processor able to switch between a first mode of depth imaging and a second mode of depth imaging according to at least one predefined threshold. The method comprising providing depth sensing by Time of Flight if the distance of the sensed object from the camera is not below a first threshold and/or if a depth resolution above a second threshold is not required, and providing depth sensing by triangulation, if the distance of the sensed object from the camera is below the first threshold and/or if a depth resolution above the second threshold is required. | 05-21-2009 |
| 20090141290 | Optical Measuring Device Using Optical Triangulation - An optical triangulation measuring device includes an emmiter that emits two alternating light beams with different wavelengths along the same path; a beam splitter; an optical separator that directs the alternating split beams towards the surfaces from which they are reflected; an optical combiner that collects the beams and directs them along a path; optronic sensors that receive two light images and to deliver a signal indicating the position of the energy barycenter a time synchronizer for the two alternating beams and the two images on the optronic sensors; and a processor for processing the signals from the optronic sensors in order to supply information relating to the position and inclination of the surface. | 06-04-2009 |
| 20090147272 | PROXIMITY DETECTION FOR CONTROL OF AN IMAGING DEVICE - Briefly, in accordance with one or more embodiments, a proximity detector is placed proximate to projector to detect an obstruction disposed proximate to the projector. The proximity detector is capable of estimating the distance from an object to the projector. If an object is detected within a minimum distance, the projector operation may be altered, for example to cause the projector to turn off, or to reduce the intensity of emitted light so that the power of the emitted light the minimum distance will be reduced to below a selected range. Furthermore, if an object cannot be detected within or near a maximum distance, the projector operation may likewise be altered, for example the proximity detector may cause the projector to turn off. | 06-11-2009 |
| 20090279107 | OPTICAL DISTANCE MEASUREMENT BY TRIANGULATION OF AN ACTIVE TRANSPONDER - Methods and devices for calculating the position of a movable device are disclosed. A console and movable device may include light detector(s) and light sources. A light source of the console may emit light that is detected by light detector(s) of the movable device. The moveable device may respond by emitting light synchronous with the received light. The console may calculate the position of the movable device by calculating the time for the light emitted from the movable device to strike the light detector(s) of the console. The rotation of the movable device may be calculated using multiple light sources and/or multiple light detector(s). The movable device may calculate its position and transmit it to a console. Multiple light sources may be distinguished using encoding or modulation of time and/or frequency. The roles of the light detectors(s) and light sources may be switched. | 11-12-2009 |
| 20100103432 | POSITIONING SYSTEM AND METHOD OF USING SAME - A positioning system having an emitter unit, a plurality of detector units, a computer and a software package is described. The emitter unit is configured to emit an emitter signal. Each detector unit is configured to output a detector signal in response to detecting the emitter signal. The computer is coupled to the emitter unit and to the detector units. The software package is installed in the computer that directs the computer to perform a number of functions such as controlling the emitter unit, controlling the detector units, inputting positional information into the computer, and estimating a relative position of the emitter unit relative to a target site within a given workspace. An associated method is also described in which the method includes the steps of calculating, directing, displaying, estimating, identifying, inputting, inserting, mounting, and obtaining. | 04-29-2010 |
| 20100277748 | Method and System for Measuring Relative Positions Of A Specular Reflection Surface - A method for measuring relative positions of a specular reflective surface of an object along a measurement line is provided. The method includes converging at least one converging light beam at a nominal position on the measurement line and forming a reflected beam from the specular reflection surface. An image of the reflected beam is recorded at a detector plane. A position of the image of the reflected beam on the detector plane is determined and converted to a displacement of the specular reflection surface from the nominal position along the measurement line. A system for carrying out the method is also provided. | 11-04-2010 |
| 20100277749 | ARRANGEMENTS AND METHODS FOR DETERMINING POSITIONS AND OFFSETS - A method for determining positions and offsets in a plasma processing system, the plasma processing system including at least a chuck and an upper electrode is provided. The method including moving a traversing assembly along a first plurality of paths to generate a first plurality of data sets, the traversing assembly including at least a light source, the light source providing a light beam, moving the traversing assembly along each path of the first plurality of paths causing the light beam to traverse the chuck and resulting in one or more data sets of the first plurality of data sets. The method also including receiving the first plurality of data sets and analyzing the first plurality of data sets to identify a first set of at least three discontinuities, wherein the first set of at least three discontinuities are related to three or more reflected light signals generated when the light beam encounters an edge of the chuck. The method also including determining a center of the chuck using coordinate data associated with the first set of at least three discontinuities. | 11-04-2010 |
| 20100296107 | DETERMINING SURFACE AND THICKNESS - An optical radiation processing unit directs different wavelengths of the optical radiation emitted by an optical source to an object being measured from a direction that differs from the normal of a surface being measured so that the different wavelengths focus on different heights in the direction of the normal of the surface. A possible polarizer polarizes the reflected radiation in a direction perpendicular to the normal of the surface. The optical radiation processing unit directs to a detector polarized optical radiation that received from the object. The signal processing unit determines on the basis of a signal provided by the detector from the detected radiation the wavelength on which radiation is the highest, and determines the location of the surface by the determined wavelength. When measuring an object from both sides, the thickness of the object being measured is determinable using the locations of the surfaces. | 11-25-2010 |
| 20100302558 | SYSTEM AND METHOD FOR DYNAMIC WINDOWING - A sensor system and method for analyzing a feature in a sensing volume is provided. The system receives image data from a sensor, where the image data including peaks corresponding to the intersection of laser lines with the feature. The system generates a dynamic window based on the entropy of the peaks. | 12-02-2010 |
| 20110222075 | OPTICAL POSITION DETECTION DEVICE - An optical position detection device, includes: a light source adapted to emit at least one detection light beam toward one side in a Z-axis direction; a first detector having a light receiving section directed to the one side in the Z-axis direction; a second detector located at a position on the one side in the Z-axis direction, the position being distant from the light source and the first detector, and having a light receiving section directed to the one side in the Z-axis direction; and a position derivation section adapted to derive a position of a object located in a first space between the first detector and the second detector and a position of a object located in a second space on the one side of the second detector in the Z-axis direction based on a light receiving result in the first detector and the second detector. | 09-15-2011 |
| 20110304859 | PROCESSING DEVICE, OPTICAL DETECTION DEVICE, AND DISPLAY DEVICE - A processing device includes a control section adapted to perform emission control of first and second light source sections based on a light reception result of a light receiving section adapted to receive a reflected light beam caused by an object reflecting irradiation light beams from the first and second light source sections, and a determination section adapted to determine a positional relationship of the object with respect to the first and second light source sections based on emission current control information for performing the emission control. The determination section determines the positional relationship of the object based on first period emission current control information as the emission current control information in a first period in which no object exists in the detection area and second period emission current control information as the emission current control information in a second period in which the object exists in the detection area. | 12-15-2011 |
| 20120147386 | Touch Device with Light Frequency Sensor for Sensing Relative Position of Object to be Detected - A touch device with light frequency sensor to sense the relative position of an object to be detected includes a work area, a light source, at least two light frequency sensors, and a position computation module. The light source is arranged toward the work area for providing light with predetermined frequency. The two light frequency sensors are arranged for respectively detecting the light frequency signals entered into the lens and the optical filter. The position computation module is linked with the two light frequency sensors for signal connection and detects characteristic data by means of trigonometry to determine the position of the object to be detected. As the light frequency sensor could simple detects the signal, the position computing module with a relative low-order computing is capable of processing the signal. That means the high-order processor of the prior art is unnecessary to be used to processing the acquired image. Hence, the touch device of the present invention has a low cost while is capable of detecting the relative position of an object to be detected. Furthermore, only the light frequency sensor is used to acquire the light frequency to avoid the situation that when the image sensor of the prior art is acquiring images, the change of the environment light strength will cause the gray level hard to be determined or unable to be determined. | 06-14-2012 |
| 20120154824 | POSITION MEASURING APPARATUS AND METHOD - A position measuring apparatus receives at least one precise position information set from at least one visible-light wireless communication device including a transmission light source, and upon receipt of the at least one precise position information ser, acquires a virtual distance based on the positions of transmission light sources imaged on an image sensor. Next, the position is measured according to the precise position information and the actual distance, virtual distance, and image sensor inclination based on this information. | 06-21-2012 |
| 20120154825 | LOCATION IDENTIFICATION SENSOR, ELECTRONIC DEVICE, AND DISPLAY DEVICE - The present invention provides a location identification sensor ( | 06-21-2012 |
| 20120212750 | Three-Dimensionally Localizing Light Emitting Molecules of Unknown Orientation and Unknown Z-Position - To the end of three-dimensionally localizing light emitting marker entities of unknown orientation and unknown position in a sample, the light emitted by each single marker entity is imaged in at least two different ways onto at least one detection plane which corresponds to a focal plane ( | 08-23-2012 |
| 20120236322 | OPTOELECTRONIC COMPONENT AND LIGHT SENSOR HAVING SAME - The invention relates to an optoelectronic component for the positional determination of an incident light beam in a longitudinal axis direction, having flat sides, longitudinal sides and two oppositely disposed end sides, having a low ohmic first contact layer at a first flat side for a first electric contact (cathode) and having at least two low ohmic second contact layers along the end sides for second contacts (anodes). The invention additionally relates to a light sensor having such a component. To provide an improved optoelectronic component for the positional determination of an incident light beam as well as to provide an improved light sensor having such an optoelectronic component, it is proposed that at least one of the second contact layers not only extends along the end side but also over part sections along a second and third long side longitudinal side. | 09-20-2012 |
| 20120262733 | DISPLACEMENT SENSOR USING MULTIPLE POSITION SENSITIVE PHOTODETECTORS - A position sensing device having a high range to resolution ratio comprises a light source arrangement, a moving aperture arrangement and a multiple position sensitive detector (PSD) arrangement. The multiple PSD arrangement comprises a plurality of position sensitive detectors arranged along at least two detection tracks along a measuring axis. Each of the plurality of position sensitive detectors shares a common portion of a total measuring range along the measuring axis with an adjacent position sensitive detector which is on a different detector track. The total measurement range is larger than the detector range of each of the position sensitive detectors. | 10-18-2012 |
| 20120293810 | METHOD FOR DETERMINING A DISTANCE BETWEEN TWO BEAMLETS IN A MULTI-BEAMLET EXPOSURE APPARATUS - The invention relates to a method for determining a distance between charged particle beamlets in a multi-beamlet exposure apparatus. The apparatus is provided with a sensor comprising a converter element for converting charged particle energy into light and a light sensitive detector provided with a two-dimensional pattern of beamlet blocking and non-blocking regions. The method comprises scanning a first beamlet over the pattern, receiving light generated by the converter element, and converting the received light into a first signal. Then the two-dimensional pattern and the first beamlet are moved relatively with respect to each other over a predetermined distance. Subsequently, the method comprises scanning a second beamlet over the pattern, receiving light generated by the converter element, and converting the received light into a second signal. Finally, the distance between the first beamlet and second beamlet is determined based on the first signal, the second signal and the predetermined distance. | 11-22-2012 |
| 20120293811 | Device and Method for Determining the Position of a Working Surface of a Working Disc - A device for determining the position of a working surface of a working disc of a double-sided machine tool, a double sided grinder in particular, wherein the double-sided machine tool has two working discs, which form a working gap for double sided machining of work pieces between working surfaces facing each other, and of which at least one is rotatingly drivable, wherein the device comprises an optical measurement device having a radiation source, an optical detector device, and an analysis device, designed for being disposed outside of the working gap. | 11-22-2012 |
| 20130010310 | PROXIMITY SENSOR WITH MOTION DETECTION - A proximity sensor with movement detection is provided. The proximity sensor may include an ASIC chip; at least three light sources configured to emit light in a particular sequence; and a photo detector configured to receive light and generate an output signal. The proximity sensor may have a compact size package, wherein the photo detector may be stacked on the ASIC chip and disposed at a substantially equal distance from the at least three light sources. The proximity sensor includes a driver operable to generate a current to a plurality of light sources in a particular timing sequence, a photo detector configured to receive light and generate an output signal, an ASIC configured to report the movement of an object near the proximity sensor if the output signal pattern generated matches one of the output signal patterns from among a set of known output signal patterns. The proximity sensor may be configured to be used as a counter or an on/off switch based on particular movements detected. | 01-10-2013 |
| 20130128284 | AUTOMATIC MEASUREMENT OF DIMENSIONAL DATA WITH A LASER TRACKER - Measuring with a system having retroreflector targets and a laser tracker includes storing a list of nominal coordinates for three targets and at least one added point; capturing on a photosensitive array of the tracker a portion of the light emitted by a light beam and reflected off the three targets; obtaining spot positions on a photosensitive array of a tracker camera from light reflected off the three targets; determining a correspondence between three spot positions on the tracker photosensitive array and the nominal coordinates of the three targets; directing a beam of light from the tracker to the three targets based at least in part on the nominal coordinates of the first target and the first spot position; measuring 3-D coordinates of the three targets with the tracker; determining 3-D coordinates of the at least one added point based at least in part on the measured 3-D coordinates of the three targets and the nominal coordinates of the at least one added point. | 05-23-2013 |
| 20130135627 | OPTICAL SENSOR - A method for optically monitoring an object within a monitoring area includes transmitting light rays with a light transmitting unit that form a line of light on the object. The line of light reflected from the object is imaged on an array of receiving elements that detects the reflected line of light and produces receiving element signals that correspond to measuring points on the object. The receiving element signals are evaluated to structure a distance profile of the object using a triangulation principle. The evaluating includes generating at least one evaluation window which covers in a first direction a local region extending along the line of light and in a second direction a distance range, and using the measuring points located farthest outside within the evaluation window for a left limit point and a right limit point for determining object data. | 05-30-2013 |
| 20130141736 | Control method and apparatus for positioning a moving object - Two or more laser positioning systems are used to position a moving object. The system includes a laser, mirror or photodiodes sensor on three different rotation units. The unit includes two fine rotation and two coarse rotation stages. By rotating fine stages, the laser on the first rotation unit constantly emits laser beam to a mirror on the second rotation unit which is rigidly mounted on the moving object, the mirror constantly reflects laser beam onto a photodiodes sensor on the third rotation unit. The amount of rotations of fine stages and the geometry among laser, mirror and sensor gives precisely the position of the moving object. After fine rotation stages nearly reach their rotation limit, they return to their starting positions by rotating the coarse rotation stages. The fine stages in different laser positioning systems work alternatively to position a moving object in high precision. | 06-06-2013 |
| 20130201492 | OPTICAL POSITION DETECTION DEVICE - An optical position detection device, includes: a light source adapted to emit at least one detection light beam toward one side in a Z-axis direction; a first detector having a light receiving section directed to the one side in the Z-axis direction; a second detector located at a position on the one side in the Z-axis direction, the position being distant from the light source and the first detector, and having a light receiving section directed to the one side in the Z-axis direction; and a position derivation section adapted to derive a position of a object located in a first space between the first detector and the second detector and a position of a object located in a second space on the one side of the second detector in the Z-axis direction based on a light receiving result in the first detector and the second detector. | 08-08-2013 |
| 20130308141 | SURVEYING INSTRUMENT AND METHOD FOR DETECTING A LASER BEAM - The present disclosure relates to a surveying system including a surveying instrument and method for detecting light of fan shaped laser beam. The surveying instrument includes a detector for detecting light of the fan shaped laser beam rotating around a propagation axis with a direction of rotation and having two detector elements arranged in a known spatial relation for outputting a detection signal when irradiated. A position determining unit is used to obtain a first set of detection signals from the detector elements, to determine a first time relation between the detection signals of the first set, and to determine a positional relation between the detector and the propagation axis based on the first time relation. | 11-21-2013 |
| 20130321826 | MOTION SENSING METHOD FOR DETERMINING WHETHER TO PERFORM MOTION SENSING ACCORDING TO DISTANCE DETECTION RESULT AND RELATED APPARATUS THEREOF - A motion sensing method for an object includes: receiving a distance detection result which is used for indicating distance detection information of the object in a neighborhood of a motion sensing apparatus; and determining whether to perform optical motion sensing upon the object of the neighborhood according to the distance detection result. | 12-05-2013 |
| 20130335751 | RANGE MEASUREMENT APPARATUS AND RANGE MEASUREMENT METHOD - A region projected with pattern light in an image sensed by an image sensing unit which senses an image of a target object projected with pattern light is specified. Geometric features of the target object are searched for from a region other than the region projected with the pattern light in the sensed image based on the specified region. A position and orientation of the target object are derived based on the searched geometric features of the target object and geometric features of a model of the target object. | 12-19-2013 |
| 20140146327 | Positioning device for an Optical Triangulation Sensor - The invention provides a positioning device for locating a planar light beam emitted by an optical triangulation sensor across a diameter of a hole formed in a surface of an object. The positioning device has an adjustable guiding element which is capable of locating an optical triangulation sensor at the same distance away from holes have a range of diameters. The guiding element is movably mounted relative to a platform that is fixed to the optical triangulation sensor. The guiding element comprises a body which is insertable into the hole, the body having a pair of contact surfaces for contacting diametrically opposed portions of the hole, the pair of contact surfaces being opposed to each other in a direction orthogonal to the plane of the planar light beam. | 05-29-2014 |
| 20140204399 | MULTI PSD-ARRANGEMENT AND CIRCUITRY - The invention concerns a light beam position detector with a detection window, for detecting a position of a striking light beam within the detection window, which detection window comprises a first PSD based on the lateral photoelectric effect, in particular with two output signals dependent on the striking position of the light beam, and an electronic readout circuitry for the PSD. The detection window further comprises at least a second PSD based on the lateral photoelectric effect, being aligned in a geometrical line in succession with the first PSD, so that the first and the at least second PSD define the detection window. | 07-24-2014 |
| 20140368838 | METHOD FOR CALIBRATING AN OPTICAL ARRANGEMENT - A method for calibrating an optical arrangement in respect to a global coordinate system is provided. The optical arrangement includes a rigid carrier, an optical acquiring unit and a light emitting unit both releasably connected to the carrier. The optical acquiring unit or the light emitting unit is calibrated in respect to a reference coordinate system offline and independently from the optical arrangement. Values of a conversion matrix are determined for converting the calibration data into corresponding calibration data in respect to the global coordinate system. A calibration of the entire optical arrangement is performed once in respect to the global coordinate system. During the intended use of the optical arrangement, the calibration data acquired for the unit and/or the respective values of the conversion matrix are considered when generating control signals for the unit and/or when processing sensor signals received from the unit. | 12-18-2014 |
| 20150346319 | Method and Device for Determining the Position Coordinates of a Target Object - A method for determining the position coordinates of a target object in a measurement field in at least two dimensions is disclosed. In a first step, a target device is positioned with a reflector element on the target object and a first basic distance between a first and a second laser distance measuring device is determined. In a second step, a first distance from the first laser distance measuring device to the target object and a second distance from the second laser distance measuring device to the target object are determined by laser distance measurement by the laser distance measuring devices. In a third step, the position coordinates of the target object are calculated from the distances by a control device. | 12-03-2015 |
