Position Transverse To Viewing Axis Patents (Class 356/615)
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Patent number: 11272650Abstract: A component mounting machine including a mounting head configured to pick up and mount a component; a component camera to image the component from below the mounting head; a board camera to image the circuit board from above; an imaging position memory to memorize imaging position coordinates during imaging, based on images acquired by the component camera; a relative position memory to memorize relative position coordinates that are a relative position of the mounting head with respect to the board camera; and a correction necessity determining section to perform imaging of the mounting head by the component camera when the moving device has arrived at the imaging position coordinates, and determine whether it is necessary to correct the relative position coordinates memorized in the relative position memory, based on a position of the mounting head understood from the images acquired from the imaging.Type: GrantFiled: August 31, 2017Date of Patent: March 8, 2022Assignee: FUJI CORPORATIONInventor: Hidetoshi Kawai
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Patent number: 11255660Abstract: This optical sensor includes an illuminating optical fiber, a first light receiving optical fiber, a second light receiving optical fiber, and a measuring unit. An intersection of a reflected light entering the first light receiving optical fiber and the reflected light entering the second light receiving optical fiber is located on a front end surface of a sensor head or is closer to the peripheral surface of a moving body (a rotating body) than the front end surface of the sensor head is. This can compensate for effects of thermal expansion and accurately measure a clearance.Type: GrantFiled: January 18, 2017Date of Patent: February 22, 2022Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Akio Kondou, Tomoyuki Onishi, Takahiro Miyamoto
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Patent number: 10976646Abstract: A mounting assembly for an optical video system may include a platform having a track extending longitudinally along the platform. A camera mount may be slideably coupled to the track. A camera may be coupled to the camera mount. The camera may include a receptacle for engaging an interchangeable lens assembly. The mounting assembly for the optical video system may also include a biasing mechanism, wherein the biasing mechanism urges the camera mount along the track such that the receptacle engages the interchangeable lens assembly.Type: GrantFiled: September 4, 2019Date of Patent: April 13, 2021Assignee: THS L.S. STARRETT COMPANYInventors: Robert Yates, Mark G. Arenal, Robert D. Picone
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Patent number: 10953470Abstract: An additive manufacturing machine includes an energy unit with two energy beam sources, each with a different power level of energy beam. In addition, a build unit receives the energy beams, and a reflecting unit is positioned between the energy unit and the build unit and directs the energy beams. There is also an energy beam detector positioned on or near the build unit.Type: GrantFiled: August 31, 2016Date of Patent: March 23, 2021Assignee: Raytheon Technologies CorporationInventor: Christopher F. O'Neill
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Patent number: 10921119Abstract: A three dimensional image measurement system including a first optical system and a second optical system is provided. The first optical system is adapted to output a structural light beam and a zero order light beam. There is an angle between the structural light beam and the zero order light beam. The first optical system performs an optical operation to project the structural light beam to a three dimensional object to obtain three dimensional information of the three dimensional object. The second optical system is adapted to receive the zero order light beam and perform another optical operation by using the zero order light beam. The first optical system includes a plurality of optical elements. The value of the angle between the structural light beam and the zero order light beam is determined according to position parameters of the optical elements.Type: GrantFiled: October 25, 2017Date of Patent: February 16, 2021Assignee: Industrial Technology Research InstituteInventors: Yu-Wen Chen, Te-Mei Wang
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Patent number: 10866083Abstract: The invention describes a laser sensor module (100) for particle density detection. The laser sensor module (100) comprising at least one first laser (110), at least one first detector (120) and at least one electrical driver (130). The first laser (110) is adapted to emit first laser light in reaction to signals provided by the at least one electrical driver (130). The at least one first detector (120) is adapted to detect a first self-mixing interference signal of an optical wave within a first laser cavity of the first laser (110). The first self-mixing interference signal is caused by first reflected laser light reentering the first laser cavity, the first reflected laser light being reflected by a particle receiving at least a part of the first laser light. The laser sensor module (100) is adapted to reduce multiple counts of the particle. The invention further describes a related method and computer program product.Type: GrantFiled: July 14, 2016Date of Patent: December 15, 2020Assignee: TRUMPF PHOTONIC COMPONENTS GMBHInventors: Alexander Marc Van Der Lee, Joachim Wilhelm Hellmig, Johannes Hendrikus Maria Spruit, Holger Moench, Cornelis Reinder Ronda, Koray Karakaya
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Patent number: 10627489Abstract: Methods, systems, and devices involving patterned radiation are provided in accordance with various embodiments. Some embodiments include a device for projecting pattern radiation. Some embodiments include a method for estimating coordinates of a location on an object in a 3D scene. Some embodiments include a system for estimating the coordinates of a location on an object in a 3D scene. A variety of radiation patterns are provided in accordance with various embodiments. Some embodiments may relate to the use of patterned illumination to identify the angular information that may be utilized to measure depth by triangulation.Type: GrantFiled: April 8, 2019Date of Patent: April 21, 2020Assignee: Cognex CorporationInventors: Benjamin Braker, Aaron Wegner, Ronald Zimmerman, Eric Moore, Trevor McDonald
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Patent number: 10514386Abstract: A sample liquid-surface position measurement device includes: a first light source that illuminates a side face of a container containing a sample; a first optical measurement sensor that is located on the opposite side of the container from the first light source, and measures transmitted light from the first light source; a first label position measuring unit that measures a position of a label affixed to the container; and an analysis section that calculates a liquid-surface position or an interface position of the sample in the container, from transmitted-light intensity data in a longitudinal direction of the container which is measured by the first optical measurement sensor, and from the position of the label in the longitudinal direction of the container which is measured by the first label position measuring unit.Type: GrantFiled: April 11, 2017Date of Patent: December 24, 2019Assignee: HITACHI HIGH-TECHNOLOGIES CORPORATIONInventors: Tatsuo Nakagawa, Kiyotaka Sugiyama, Tsukasa Suenari, Iwao Suzuki
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Patent number: 10488182Abstract: There is provided: a pair of slanted fiber groups; a pair of parallel fiber groups; a light source for emitting two slanted light beams from a pair of slanted light-emitting fibers, and emitting two parallel light beams from a pair of parallel light-emitting fibers; a target provided to the outer peripheral surface of a rotor; a pair of light-receiving elements for detecting the intensity of light received by each of a pair of slanted light-receiving fibers; a pair of light-receiving elements for detecting the intensity of light received by each of a pair of parallel light-receiving fibers; and a computation unit for performing a computation that includes an interval affected by thermal elongation on the basis of four waveforms indicating changes in the intensity detected by each of the light-receiving elements.Type: GrantFiled: March 16, 2017Date of Patent: November 26, 2019Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Tomoyuki Onishi, Takahiro Miyamoto, Akio Kondou
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Patent number: 10469691Abstract: The present invention is related to a scanning device for scanning documents, comprises a flat-bed scanning glass; a contact image sensor arranged above the flat-bed scanning glass separately to form a scanning path therebetween, a bottom surface of the contact image sensor being arranged with a protecting glass, a middle area of the protecting glass being configured as a scanning area, and a chamfer being arranged at the bottom surface of the protecting glass at a downstream position relative to the scanning area. Hence the dust of documents in this invention would be stacked in the chamfer during the scanning process temporarily and then be wiped away by the document itself, so as to assure the dust would not be stacked in the scanning area. The scanning device in this invention is capable to maintain the scanning quality without clearing the dust even after scanned a massive quantity of documents.Type: GrantFiled: October 3, 2018Date of Patent: November 5, 2019Assignee: FOXLINK IMAGE TECHNOLOGY CO., LTD.Inventors: Tsung Ching Chou, Wen Ching Liao
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Patent number: 10388026Abstract: A depth camera assembly (DCA) for depth sensing of a local area. The DCA includes a structured light generator, an imaging device, and a controller. The structured light generator illuminates the local area with structured light. The structured light generator includes an acousto-optic deflector (AOD) and a liquid crystal device (LCD). The AOD functions as one or more dynamic diffraction gratings that diffract one or more optical beams to form diffracted scanning beams. The LCD includes one or more liquid crystal gratings (LCGs) that diffract the diffracted scanning beams to form the structured light projected into the local area. The imaging device captures portions of the structured light reflected from one or more objects in the local area. The controller determines depth information for the one or more objects based on the captured portions of the reflected structured light.Type: GrantFiled: July 7, 2017Date of Patent: August 20, 2019Assignee: Facebook Technologies, LLCInventors: Qing Chao, Lu Lu
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Patent number: 10288413Abstract: An apparatus for mounting components on a substrate comprises a pick and place system with a bonding head, a camera and two optical deflection systems. The first optical deflection system and the camera form a first image detection system for recording an image of the substrate location on which the component is to be mounted. The first optical deflection system, the second optical deflection system and the camera form a second image detection system for recording an image of a bottom side of the component. The pick and place system moves the carriage from a take-up location of the component to the substrate location in a respective predetermined height H1 above the second optical deflection system, so that the bottom side of the component is located in a focal plane of the camera, and lifts the carriage to a respective predetermined height H2, so that the substrate location is situated in the focal plane of the camera.Type: GrantFiled: September 28, 2016Date of Patent: May 14, 2019Assignee: Besi Switzerland AGInventors: Norbert Bilewicz, Hubert Selhofer
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Patent number: 10264405Abstract: In a general aspect of the examples described, motion is detected based on received wireless signals in a mesh network. In an example, transfer function components for each pair of devices are obtained. A time series of transfer function matrices is generated, with each of the transfer function matrices comprising a respective subset of the transfer function components. Motion of an object in the space is detected based on the time series of transfer function matrices.Type: GrantFiled: May 1, 2018Date of Patent: April 16, 2019Assignee: Cognitive Systems Corp.Inventors: Tajinder Manku, Oleksiy Kravets
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Patent number: 9753136Abstract: A portable electronic device includes a housing having at least one major face. One or more processors are operable in the device. At least two discrete signal emitters are disposed along the at least one major face. At least two discrete signal receivers are also disposed along the at least one major face. A first discrete signal emitter is proximately located with a first discrete signal receiver to form a first discrete signal emitter-receiver pair, while a second discrete signal emitter is proximately located with a second discrete signal receiver to form a second discrete signal emitter-receiver pair. The first discrete signal emitter-receiver pair is distally located along the at least one major face from the second discrete signal emitter-receiver pair, and can receive gesture input in a first mode of operation and proximity input in a second mode of operation.Type: GrantFiled: February 11, 2015Date of Patent: September 5, 2017Assignee: Motorola Mobility LLCInventors: Rachid M Alameh, Justin Douglas Eltoft, Paul Steuer
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Patent number: 9400170Abstract: An automatic method for measuring three-dimensional coordinates by a laser tracker includes determining whether a retroreflector is accessible within an acceptance region of an inspection location and, if not, taking corrective action.Type: GrantFiled: May 20, 2015Date of Patent: July 26, 2016Assignee: FARO TECHNOLOGIES, INC.Inventor: Kenneth Steffey
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Patent number: 9332686Abstract: A lower supporting pin module 22 is given a shape having a contact surface 26a. On the occasion of position recognition for determining a position of a pin on the lower supporting pin module 22, an image of the lower supporting pin module 22 is captured, and the image is subjected to recognition processing, to thus detect an outer shape of an upper shaft 24B. Even when an extraneous matter on a downside surface of a substrate adheres to the contact surface 26a, the position of the lower supporting pin module 22 can be stably recognized with superior recognition precision.Type: GrantFiled: September 11, 2012Date of Patent: May 3, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shirou Yamashita, Tadashi Endo, Yasuichi Okada, Makoto Nakashima, Yuki Minamide
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Patent number: 9267786Abstract: An apparatus and method for adjusting prism beam expander. The prism beam expander adjustment apparatus has a light source, a baseplate, a precise rotary stage, support columns, a two-dimensional slide stage, the first 90-degree bellcrank lever, an indication light source, the second 90-degree bellcrank lever, an optical filter, a photodetector, a computer, and an assembly platform. Incidence angles of all prisms of a prism beam expander can be precisely demarcated and designed beam magnification is obtained with the preferred adjustment methods. The parallel of the prisms can be guaranteed by monitoring the pitching of the prisms in the adjustment process. As a result, the linewidth narrowing and cavity losses decreasing can be improved by application of the fixed prism beam expander.Type: GrantFiled: November 28, 2014Date of Patent: February 23, 2016Assignee: Shanghai Institute of Optics And Fine Mechanics, Chinese Academy of SciencesInventors: Haibo Zhang, Zhijun Yuan, Jun Zhou, Yunrong Wei, Liyuan Jiang, Liming Geng
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Patent number: 9157795Abstract: Example methods and systems for calibrating one or more light sources are described. One example method includes determining a position of at least three photosensors relative to a world frame, controlling an orientation of at least one light source so as to cause the at least one light source to project a light beam across an area encompassing the at least three photosensors, receiving signals indicating a sensing of a light beam directed at one of the photosensors, determining orientations of the at least one light source that cause a signal at one of the photosensors, and based on the position of the at least three photosensors and the orientations of the at least one light source that cause a signal at one of the photosensors, determining a transformation from a local frame of the at least one light source to the world frame.Type: GrantFiled: December 2, 2013Date of Patent: October 13, 2015Assignee: Bot & Dolly, LLCInventors: Jeffrey Linnell, Marek Michalowski, Jean-Francois Dupuis, Thiago Hersan
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Patent number: 9027218Abstract: An apparatus and method for finding part position relations of parts of mechanical and opto-mechanical machining and quality control systems, and for recognizing these parts, is disclosed. The present invention relies on optical contactless sensing technology, with recording of optical fiducial patterns and therefrom determining positions close to the work positions without physical contact. Part positions of machines are determined by associating or mechanically integrating fiducial patterns (1) with key parts, and optically detecting the images of these patterns. Part positions and displacements according to given part position finder (6) strategies are found, by associating fiducial pattern images (14) and machine position data (17) to parts that are members of a part geometry relation (15), and under part displacement constraints (16), finding given part positions or displacements (18).Type: GrantFiled: September 13, 2005Date of Patent: May 12, 2015Inventor: Gudmunn Slettemoen
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Patent number: 9010012Abstract: Various gun sights and related methods are provided. In one embodiment, a gun sight includes a light source adapted to project light, a user-viewable interface, and an optical element. The optical element includes a first surface adapted to pass the light to provide a reticle at the user-viewable interface. The optical element also includes a second surface adapted to refract the light to provide a light guide at a peripheral area of the user-viewable interface to aid a user to substantially align the user's eye with the reticle. Various mechanisms for aligning gun sights, attaching gun sights, related methods, and other embodiments are also provided.Type: GrantFiled: March 12, 2013Date of Patent: April 21, 2015Assignee: SureFire, LLCInventors: John W. Matthews, Murray Dunn, Michael LaSavio, Michael D. Picciotta, Loc Nguyen, Ammar Burayez, Mark Buczek, Mark Squire
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Patent number: 8994959Abstract: The invention relates to a device for capturing the rotary position (D) of at least one rotary device (4) provided for receiving a container (3) by means of at least one sensor unit (5), wherein the rotary device (4) is provided for driving the container (3) about a rotary axis (DA), and the at least one sensor unit (5) is advantageously designed for non-contact capturing of the rotary position (D) of the rotary device (4) relative to the rotary axis (DA).Type: GrantFiled: November 11, 2009Date of Patent: March 31, 2015Assignee: KHS GmbHInventor: Carsten Beckhaus
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Patent number: 8982359Abstract: A system for detecting motion of a body, the system comprising: a body; a first grating mounted substantially stationary relative to a frame of reference; a second grating mounted on the body; a detector arranged to receive one or more radiation beams diffracted at the first and second gratings thereby to detect motion of the body relative to the frame of reference; wherein the detector is coupled to the body and moveable relative to the body.Type: GrantFiled: August 1, 2012Date of Patent: March 17, 2015Assignee: ASML Netherlands B.V.Inventors: Jan Van Eijk, Erik Roelof Loopstra, Engelbertus Antonius Fransiscus Van Der Pasch, Johannes Petrus Martinus Bernardus Vermeulen
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Patent number: 8913253Abstract: An optical position detection apparatus detects the position of a target object in a Z-axis direction and the position of the target object in an X-axis direction based on the result of the light reception in a light receiving unit when light source units that are spaced apart in the X-axis direction are sequentially turned on and the result of the light reception in the light receiving unit when light source units that are spaced apart in the Z-axis direction are sequentially turned on among a first light source unit, a second light source unit, and a third light source unit. The emission directions of the detection lights in the first light source unit, the second light source unit, and the third light source unit are equal to one another in the Z-axis direction.Type: GrantFiled: July 22, 2011Date of Patent: December 16, 2014Assignee: Seiko Epson CorporationInventor: Kanechika Kiyose
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Patent number: 8867046Abstract: A method and an apparatus of measuring a position of a particle in a flow are disclosed. An embodiment of the method comprises temporally modulating and spatially pattering an illumination beam propagating along a first dimension, passing a particle across the modulated illumination beam, detecting a temporal profile of scattered light produced by the particle's passing through the modulated illumination beam, and determining the position of the particle based, in part, on the temporal profile of the detected scattered light.Type: GrantFiled: October 26, 2012Date of Patent: October 21, 2014Assignee: Massachusetts Institute of TechnologyInventors: Thomas H. Jeys, Antonio Sanchez-Rubio, Ronald H. Hoffeld, Jonathan Z. Lin, Nicholas M. F. Judson, George S. Haldeman, Vincenzo Daneu
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Patent number: 8842295Abstract: In a system for detecting the position of an object in relation to a reference system, the object is arranged so as to be movable in relation to the reference system along at least two orthogonal first and second main movement axes. To record the position of the object in relation to the reference system, a position measuring device includes at least two two-dimensional measuring standards situated along the first main movement axis, and four scanning units for an optical scanning of these measuring standards. In addition, at least four additional supplementary scanning units are provided, which are situated between the four scanning units along the first main movement axis.Type: GrantFiled: February 6, 2013Date of Patent: September 23, 2014Assignee: Johannes Heidenhain GmbHInventors: Wolfgang Holzapfel, Joerg Drescher, Markus Meissner, Ralph Joerger, Bernhard Musch, Thomas Kaelberer
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Patent number: 8842269Abstract: A beam deflection device including an aluminum disc containing a plurality of lasers, each laser projecting a laser beam substantially along one of the ‘X’, ‘Y’, and ‘Z’ axes of a structural beam to which the device is attached. Wiring is attached to each of the plurality of lasers to provide power and transmit data. Passageways are provided in the solid disc to route the wiring to the exterior. A suction cup on a surface of the device allows it to be attached to the beam by pressing the device against a flat surface area of the beam.Type: GrantFiled: January 3, 2011Date of Patent: September 23, 2014Inventor: Nicolai Taylor Blankers
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Patent number: 8823953Abstract: Method and apparatus (1a) for optical detection of the position of large-area printed products (10). The apparatus (1a) has conveyance means (2a) for movement of the printed products (10) along a conveyor path (4) past at least one contrasting light source (30), and at least one optical sensor (16). The conveyance means (2, 2a), the contrasting light source (30) and optical sensor (16) are arranged such that the printed products (10) can be conveyed between the contrasting light source (30) and the optical sensor (16).Type: GrantFiled: May 13, 2009Date of Patent: September 2, 2014Assignee: Ferag AGInventor: Carl Conrad Maeder
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Patent number: 8786851Abstract: A system for testing a distortion of a liquid crystal display (LCD) device can test the LCD device within a chamber in a state of being assembled perpendicular to the ground, whereby whether any distortion occurs in an internal component can be fast detected even in severe conditions of high temperature and high humidity and under an actual installation environment of a user.Type: GrantFiled: December 30, 2009Date of Patent: July 22, 2014Assignee: LG Display Co., Ltd.Inventors: Gi-Bin Kim, Tae-Woo Kim, Na-Young Ha
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Patent number: 8767219Abstract: A novel electro-optical sensor for the wideband and normalized translation of the two-dimensional position of a light beam transverse to its traveling direction into electrical position signals. Incident on the sensor is the light beam 122 which is divided with a beamsplitter 121 into a transmitted beam 123 and a reflected beam 124 which both have similar transverse motion behavior as the incident beam. From each of these divided beams the position is determined one-dimensionally with an one-dimensional optical position sensor, 125, 126. The one-dimensional position determination is done by dissecting each divided beam into two beams using a partitioning element. The outputted dissected beams have a power distribution that depends on the position of the divided beam relative to the partitioning element. Each beam is optically coupled to a photo detector which translates its power into an electric current.Type: GrantFiled: December 8, 2009Date of Patent: July 1, 2014Inventor: Paul Edmond Rutten
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Patent number: 8760521Abstract: The present disclosure relates to a sensor network including a plurality of nodes, each node having a directional sensor, a communication module, and a processor configured to receive local measurements of a calibration object from the directional sensor, receive additional measurements of the calibration object from neighboring nodes via the communication module, estimate an initial set of calibration parameters in response to the local and additional measurements, receive additional sets of calibration parameters from neighboring nodes via the communication module, and recursively estimate an updated set of calibration parameters in response to the additional sets of calibration parameters. Additional systems and methods for calibrating a large network of camera nodes are disclosed.Type: GrantFiled: May 14, 2010Date of Patent: June 24, 2014Assignees: Purdue Research Foundation, Olympus CorporationInventors: Henry Ponti Medeiros, Johnny Park, Avinash Kak, Hidekazu Iwaki
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Patent number: 8755034Abstract: According to an example embodiment, a method to determine an exposure start position and orientation includes loading a substrate on a moving table. The substrate includes at least one alignment mark of a first set of alignment marks of a first pattern layer patterned thereon. At least one alignment mark of a second set of alignment marks of a second pattern layer is exposed on the substrate using maskless lithography. A position of the at least one alignment mark of the first set of alignment marks and a position of the at least one alignment mark of the second set of alignment marks on the substrate is measured. A relative orientation difference between a desired exposure start orientation and an obtained exposure start orientation is acquired using the measured positions of the at least one alignment mark of the first set of alignment marks and the at least one alignment mark of the second set of alignment marks.Type: GrantFiled: July 19, 2011Date of Patent: June 17, 2014Assignee: Samsung Electronics Co., LtdInventors: Sung Min Ahn, Sang Don Jang, Tae Kyu Son
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Patent number: 8742322Abstract: The laminated diffractive optical element includes plural diffraction gratings (21, 22 and 23) laminated with each other, the respective diffraction gratings being formed of a same light-transmissive material. In the element, reflective films are formed on grating surfaces (11 and 12) of the respective diffraction gratings, each of the reflective films being disposed between the diffraction gratings. Each of the reflective films reflects light in a specific wavelength range and transmits light in a wavelength range different from the specific wavelength range, the specific wavelength ranges of the respective reflective films being different from each other. The grating surfaces of the respective diffraction gratings are formed in shapes different from each other according to the specific wavelength ranges corresponding to the respective reflective films.Type: GrantFiled: March 2, 2011Date of Patent: June 3, 2014Assignee: Canon Kabushiki KaishaInventor: Ko Ishizuka
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Patent number: 8735825Abstract: In an optical position detection device, when light source sections emit detection light, a light detecting section detects detection light reflected from a object to detect the coordinates of the object. When seen from the detection space, the light detecting section is located inward from a plurality of light source sections, and each of the plurality of light source sections includes first and second light emitting elements. Therefore, the position of the object can be detected on the basis of a comparison result of the received light intensity in the light detecting section when the first light emitting element is turned on and the received light intensity in the light detecting section when the second light emitting element is turned on in both the case where the object is located outside a region between the light source sections and the case where the object is located inside the region.Type: GrantFiled: April 6, 2012Date of Patent: May 27, 2014Assignee: Seiko Epson CorporationInventors: Daisuke Nakanishi, Kanechika Kiyose
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Patent number: 8711370Abstract: Embodiments are directed towards detecting the three dimensional position of a position sensing device (PSD) utilizing a spot scanned across a remote surface. A trajectory map may be determined for a projection system. The trajectory map may identify a location of the spot at various times during the scan. A PSD may be arranged with a clear view of the remote surface. The PSD may observe at least three spots projected onto the remote surface utilizing three lines of sight that enable moment-in-time linear alignment between the spot and a sensor. Observation angles between each of the lines of sight may be determined. For each observed spot, a transition time may be determined and a location of the observed spot may be determined based on the trajectory map. A position of the PSD may be determined based on determined observed locations and the observation angles of the PSD.Type: GrantFiled: October 4, 2013Date of Patent: April 29, 2014Inventor: Gerard Dirk Smits
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Publication number: 20140111814Abstract: The disclosure provides a photoelectric sensor that provides useful information to set measurement conditions. The photoelectric sensor includes a light emitting unit having a light emitting element configured to emit detection light toward a detection area, a light receiving unit having a light receiving element configured to receive the detection light from the detection area and to obtain a detection value corresponding to the amount of light received, and a display unit configured to display information about the detection value in the light receiving unit. When the detection value varies across a predetermined threshold, the display unit displays a transit time that is the time from when the detection value crosses the predetermined threshold until when it crosses the predetermined threshold again, and a variation amount of the detection value in the variation.Type: ApplicationFiled: September 18, 2013Publication date: April 24, 2014Applicant: OMRON CORPORATIONInventors: Soji OHMAE, Kiyohiko GONDO, Yusuke IIDA
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Patent number: 8706264Abstract: A method for use in a part tracking system including a camera and a motion controller, the method comprising the steps of time synchronizing the motion controller and the camera at a trigger time when it is anticipated that a part is within the field of view of the camera, causing the camera to obtain an image, using the obtained image to determine an actual location of the part at the trigger time, comparing the actual location and the anticipated location of the part to identify a position difference and at the motion controller, using the position difference at the trigger time to adjust at least one operating characteristic of the automated system.Type: GrantFiled: December 17, 2008Date of Patent: April 22, 2014Assignee: Cognex CorporationInventor: Dale Peterson
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Publication number: 20140092396Abstract: The invention relates to a device for measuring the relative position of two objects moving relative to each other along an axis or around a rotating axis (D), with a transmitter (12) which emits unpolarized light, and with a polarizer (20), and with at least one receiver (16) which measures the luminosity of the light passing through the polarizer (20) in order to create a position-dependent signal, such that a polarizing filter is positioned in front of the receiver (16), and the receiver (16) and the polarizer (20) move relative to each other as a function of the relative position of the two objects, and such that the polarizer (20) has at least two different polarizing directions.Type: ApplicationFiled: August 30, 2013Publication date: April 3, 2014Applicant: SICK STEGMANN GmbHInventor: David HOPP
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Patent number: 8681313Abstract: A patterning device, including alignment targets having alignment features formed from a plurality of diffractive elements, each diffractive element including an absorber stack and a multi-layered reflector stack is provided. The diffractive elements are configured to enhance a pre-determined diffraction order used for pre-alignment and to diffract light in a pre-determined direction of a pre-alignment system when illuminated with light of a wavelength used for the pre-alignment. The diffractive elements may occupy at least half of an area of each alignment feature. The diffractive elements may be configured to enhance first or higher order diffractions, while substantially reducing zeroth diffraction orders and specular reflection when illuminated with a wavelength used for reticle prealignment. The dimensions of each diffractive element may be a function of a diffraction grating period of each alignment feature.Type: GrantFiled: April 3, 2009Date of Patent: March 25, 2014Assignee: ASML Holding N.V.Inventors: Yuli Vladimirsky, Muhammad Arif, Robert Albert Tharaldsen
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Publication number: 20140078518Abstract: The present invention relates to a method and apparatus for measuring precise high speed displacement, and more particularly, to a method and apparatus for measuring precise high speed displacement, which measures displacement of a test specimen by using a uniform intensity laser line and by using differences in a laser transmission amount according to the deformation of the test specimen, and measures a strain rate of the test specimen such as high strength fiber or the like using a high speed tensile test.Type: ApplicationFiled: December 14, 2012Publication date: March 20, 2014Applicant: HYUNDAI MOTOR COMPANYInventor: Jae-Young Lim
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Patent number: 8643851Abstract: The present invention relates to a scanning device for determining at least partial cross-sectional profiles of food products to be sliced in accordance with the light cutting process, having at least one illumination device for generating a light line on the surface of a product and having at least one detection device for taking images of the product surface including the light line, wherein the illumination device includes at least one light source which is configured to generate a light beam propagating in the direction of a scanning region for the product in a scanning plane and widening in so doing and includes an optically effective device which is arranged in the propagation path of the widening light beam and which is configured to counter the divergence of at least some of the incident light.Type: GrantFiled: December 20, 2010Date of Patent: February 4, 2014Assignee: Weber Maschinenbau GmbH BreidenbachInventor: Guenther Weber
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Patent number: 8643835Abstract: A system for inspecting a depth relative to a layer using a sensor with a fixed focal plane. A focus sensor senses the surface of the substrate and outputs focus data. In setup mode the controller scans a first portion of the substrate, receives the focus data and XY data, and stores correlated XYZ data for the substrate. In inspection mode the controller scans a second portion of the substrate, receives the focus data and XY data, and subtracts the stored Z data from the focus data to produce virtual data. The controller feeds the virtual data plus an offset to the motor for moving the substrate up and down during the inspection, thereby holding the focal plane at a desired Z distance.Type: GrantFiled: July 9, 2010Date of Patent: February 4, 2014Assignee: KLA-Tencor CorporationInventors: Scott A. Young, Daniel L. Cavan, Yale Zhang, Aviv Balan
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Patent number: 8638451Abstract: A system for determining a location on a 2D surface or in a 3D volume. The system includes a probe and a tracker. The probe includes a marker, an indicator, and a reflective surface, wherein the probe is configured so the reflective surface forms a virtual image of the marker having an apparent location coincident to a location of the indicator. The tracker configured to measure the apparent location of the virtual image of the marker.Type: GrantFiled: October 1, 2012Date of Patent: January 28, 2014Assignee: Ivan FaulInventor: Ivan Faul
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Patent number: 8638452Abstract: A chassis measuring system comprises an illumination device for producing a structured illumination (38, 58, 78, 98), which is developed in such a way that it produces a structured image on a measuring head (32, 52; 72, 92) situated opposite in the transverse vehicle direction, a reference surface (40, 60, 80, 100) facing in the same direction as the illumination device (38, 58, 78, 98), on which a structured image produced by an illumination device (38, 58; 78, 98) of the measuring head (32, 52; 72, 92) situated opposite in the transverse vehicle direction may be projected, and at least one measuring camera (34, 36; 54, 56; 74, 76; 94, 96) facing in the same direction as the illumination device (38, 58, 78, 98), which is developed in such a way that it detects the structured image on the reference surface (40, 60; 80, 100) of the opposite measuring head (32, 52; 72, 92) in order to determine the position parameters of the measuring head (32, 52, 72, 92).Type: GrantFiled: February 2, 2009Date of Patent: January 28, 2014Assignee: Robert Bosch GmbHInventors: Daniel Muhle, Anke Svensson, Matthias Roland, Axel Wendt
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Patent number: 8619266Abstract: An optical position-measuring device includes a light source, a measuring reflector movable in space, a detection unit and a light-beam deflection unit that can align at least one beam of rays, emitted by the light source, in the direction of the measuring reflector. The light-beam deflection unit includes a cardan system having two cardan frames. A first cardan frame is adjustable by motor about a first axis of rotation, and a second cardan frame within the first cardan frame is adjustable by motor about a second axis of rotation oriented in a direction perpendicular to the first axis of rotation. The two axes of rotation intersect in a fixed reference point, at which a reference reflector is disposed. A plurality of mirrors are disposed rigidly on the cardan frames, so that the beam of rays can be pivoted about the fixed reference point via the mirrors during alignment.Type: GrantFiled: September 19, 2011Date of Patent: December 31, 2013Assignee: Dr. Johannes Heidenhain GmbHInventors: Wolfgang Holzapfel, Florian Flossmann
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Patent number: 8619267Abstract: 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.Type: GrantFiled: July 8, 2011Date of Patent: December 31, 2013Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.Inventors: Chee Heng Wong, Yufeng Yao, Han Kang Chong
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Patent number: 8605295Abstract: The general field of the invention is that of optical position/orientation devices for a helmet and more particularly those whose helmet comprises neither emitters, nor receivers but solely passive optical components, detection of which is ensured by fixed opto-electronic means outside the helmet. The optical component for the optical device for detecting position/orientation of a helmet according to the invention comprises a particular “optical cube corner”. It comprises a prism in the form of a trirectangular trihedron, each of the three plane surfaces of the trihedron comprising a blade with plane and mutually parallel faces, the first face being coincident with the plane surface on which it rests, the interface between this first face and said surface comprising a semi-reflecting treatment.Type: GrantFiled: December 2, 2010Date of Patent: December 10, 2013Assignee: ThalesInventors: Laurent Potin, Siegfried Rouzes, Jean-Pierre Gerbe
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Patent number: 8593647Abstract: An optical tracking system for determining the pose of a moving object in a reference coordinate system includes light emitters, optical detectors, and a pose processor. The processor is coupled with an optical detector and also with a light emitter. The processor determines the object's pose according to detected light. An optical detector and a light emitter are situated at a fixed position in the reference coordinate system. Other ones of the optical detectors and light emitters are attached to the object. One optical detector is a WFOV detector comprising an optical sensor and optical receptors. The receptors are spaced apart and optically coupled with the optical sensor. The sensor senses light received from a light emitter. Each receptor projects a different angular section of a scene on the sensor. The pose processor associates the representation on the sensor, with a respective receptor which projected the light on the sensor.Type: GrantFiled: January 22, 2013Date of Patent: November 26, 2013Assignee: Elbit Systems Ltd.Inventors: Adi Charny, Dror Yahav, Shahaf Zommer, Ilan Efrat, Rani Ben-Yishai
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Publication number: 20130308140Abstract: Fringe patterns at first and second spatial frequencies are projected onto a work piece surface and a reference surface, respectively. An image of the projected fringe patterns is obtained and a measurement signal associated with work piece displacements and a reference signal are obtained based on the first and second spatial frequencies. The image of the projected fringe patterns can exhibit substantial or complete overlap of the fringe patterns at the first and second spatial frequencies, and the overlapping patterns can be separated based on the spatial frequencies. Fringe pattern shifts at one or both of the first and second spatial frequencies can be used to adjust a pattern transfer system to permit accurate pattern transfer.Type: ApplicationFiled: March 11, 2013Publication date: November 21, 2013Applicant: NIKON CORPORATIONInventors: Eric Peter Goodwin, Daniel G. Smith
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Patent number: 8570533Abstract: A position measuring device including a reflective scale and a scanning unit. The scanning unit includes a retroreflector and a signal unit wherein the signal unit includes a light source and a detector arrangement. The scanning unit and the signal unit are structurally separate from one another and are disposed in planes parallel to one another, and wherein the scanning unit is movable relative to the reflective scale in a measuring direction. The light source emits a beam that propagates freely in a direction to the scanning unit, wherein from the scanning unit along the direction to the signal unit a pair of interfering partial beams propagate freely and wherein between the signal unit and the scanning unit the partial beams propagate freely in a propagation direction that is oriented perpendicular to the planes.Type: GrantFiled: May 21, 2012Date of Patent: October 29, 2013Assignee: Dr. Johannes Heidenhain GmbHInventors: Florian Garczarek, Wolfgang Holzapfel
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Patent number: 8548665Abstract: A movable body system includes a movable body to which an image pickup apparatus is attached; an image analyzer that performs image matching between the image captured by the image pickup apparatus and an image, which is previously captured on the travel path of the movable body; a wall-surface detector that detects directions of the movable body with respect to wall surfaces, which are arranged along the travel path, and distances between the wall surfaces and the movable body; and a traveling-direction calculator that detects a shift of the movable body with respect to the travel path from an output of the image analyzer or the wall-surface detector, and calculates a traveling direction to cause the movable body to travel on the travel path.Type: GrantFiled: March 16, 2011Date of Patent: October 1, 2013Assignee: Kabushiki Kaisha Yaskawa DenkiInventors: Tetsuro Izumi, Dai Kouno