Position Of Detected Arrangement Relative To Projected Beam Patents (Class 356/622)
  • Patent number: 9927290
    Abstract: The invention relates to an arrangement and a method for detecting and indicating laser radiation comprising a laser device (36) producing the laser radiation, such as rotation lasers or line lasers, and an indicating device (22) with at least one laser beam detector and at least one indicating element (26, 28, 30) which indicates the detected laser radiation. In order to precisely indicate the position of the laser radiation to be detected using uncomplicated circuitry, it is proposed that the at least one laser beam detector and the at least one indicating element are the same component in form of an LED (26, 28, 30).
    Type: Grant
    Filed: May 5, 2013
    Date of Patent: March 27, 2018
    Inventors: Daniel Busam, Andreas Weber
  • Patent number: 9751235
    Abstract: A system for reconditioning barrels comprising: a robot arm; a router assembly for routing the inside surface of a barrel; and a laser assembly for measuring the inside profile of a barrel, wherein: the router assembly is fixedly attached to the robot arm; and the laser assembly is removably attached to the router assembly thus allowing the laser assembly to be removed while the barrel is being routed in order to protect the laser from airborne particles and vibrations from the router.
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: September 5, 2017
    Assignee: Diverse Barrel Solutions Pty Ltd
    Inventor: Breck Donald Waterman
  • Patent number: 9524553
    Abstract: An image processing apparatus generates a hypothesis group for marker areas and marker identifiers by randomly scattering hypotheses including the marker areas and the marker identifiers in a range in which the hypotheses can be made, and evaluates each of the hypotheses for the marker areas and the marker identifiers using image information on markers, when a variance value of a marker area in a hypothesis including a marker identifier satisfying a predetermined condition is a predetermined threshold or larger, and replicates a hypothesis extracted from the hypothesis group, based on the evaluation result, and reconstructs the hypothesis group by changing the replicated hypothesis based on a degree of similarity between markers and on a neighborhood probability of a marker, and causes repetitive execution of the evaluating, the replicating, and the reconstructing until the variance value becomes smaller than the threshold in the reconstructed hypothesis group.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: December 20, 2016
    Inventors: Bin Chen, Yoshihiko Murakawa
  • Patent number: 9290894
    Abstract: Road paver having a towing machine that is movable on a plane along a work area, and a screed provided to lay a road pavement, and having at least one measuring device configured to generate a point cloud that depicts a three-dimensional condition of the surface of the plane.
    Type: Grant
    Filed: August 15, 2012
    Date of Patent: March 22, 2016
    Assignee: JOSEPH VOGELE AG
    Inventor: Achim Eul
  • Patent number: 9243898
    Abstract: A position measurement system for determining 2D displacement or position of a mobile element with respect to a reference frame, including: a point light; an optical mask having transparent and opaque areas defining a repetitive pattern on at least one side of its surfaces; an imager, fixed to a mobile element, including integrated electronic circuits allowing detection, computing and analyzing of a shadow projected by the optical mask. The position measurement system includes an optical diffuser plate between the light source and the mask. The imager, mask and diffuser plate form an assembly so as to produce a light spot created by the scattering of the incident light beam emitted by the light source on the diffuser plate. The mask positioned between the diffuser plate and imager, produces a shadow on the imager, allowing to compute and provide 2D position of the mobile element relative to the fixed reference frame.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: January 26, 2016
    Inventors: Peter Masa, David Hasler, Eric Grenet, Ross Stanley
  • Patent number: 9019510
    Abstract: A plurality of laser positioning units are used to position an X-Y stage. In each laser positioning unit, a mirror constantly reflects laser beam to an optical position sensor, where the mirror is integrally mounted on a rotation unit which is integrally mounted on X-Y stage, where the laser diode is mounted on another rotation unit. Each rotation unit includes a fine rotation stage and a coarse rotation stage. When moving the X-Y stage, fine stages constantly rotate mirror or/and laser to reflect the laser beam onto the optical position sensor, the amount of rotations and geometry of position of laser and mirror gives precisely the position of moving stage. The fine stages and coarse stages in different laser positioning units work alternatively to position the stage, and the fine stages are calibrated if coarse stages moves.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: April 28, 2015
    Inventors: Mingwu Bai, Ming Chen
  • Patent number: 8982359
    Abstract: 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: Grant
    Filed: August 1, 2012
    Date of Patent: March 17, 2015
    Assignee: ASML Netherlands B.V.
    Inventors: Jan Van Eijk, Erik Roelof Loopstra, Engelbertus Antonius Fransiscus Van Der Pasch, Johannes Petrus Martinus Bernardus Vermeulen
  • Patent number: 8970852
    Abstract: A laser projector for chassis alignment has a laser light source emitting a laser light beam, an optical element which generates a structured laser light pattern when it is irradiated by the laser light beam, a detector which is situated in such a way that it is irradiated by a sub-area of the structured laser light pattern and generates an output signal which is correlated with the radiation, and an evaluation unit which compares the output signal generated by the detector with at least one predefined setpoint value and turns off the laser light source if it detects a significant deviation of the output signal from the setpoint value.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: March 3, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Guenter Nobis, Steffen Abraham, Matthias Gebhard, Ulrich Kallmann
  • Patent number: 8953176
    Abstract: The present invention provides apparatus for a non-contact method of obtaining accurate three-dimensional measurements of a dry contact lens, more specifically, using dry lens metrology to know the exact thickness of a contact lens.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: February 10, 2015
    Assignee: Johnson & Johnson Vision Care, Inc.
    Inventors: Michael F Widman, John B Enns, I, P Mark Powell, Peter W Sites, Christopher Wildsmith
  • Patent number: 8922789
    Abstract: Displacement measuring device with light irradiation system, first and second FBGs and detecting system. The first FBG has first transmittance distribution or first reflectance distribution. The second FBG has second transmittance distribution or second reflectance distribution. The detecting system detects light passed through the first and second FBGs of which at least one of the first transmittance distribution and the second transmittance distribution changes in a wavelength direction with a change amount different from that of the other, according to a displacement amount of an object, or amplitude of the light passed through the first and the second FBGs of which at least one of the first reflectance distribution and the second reflectance distribution changes in the wavelength direction with a change amount different from that of the other, according to the displacement amount of the object, and acquires an index to indicate the displacement amount based on the amplitude.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: December 30, 2014
    Assignees: Fuji Jukogyo Kabushiki Kaisha, The University of Tokyo
    Inventors: Hideki Soejima, Yoji Okabe, Qi Wu, Koji Omichi, Ryujiro Nomura
  • Patent number: 8922788
    Abstract: A physiological monitoring system may determine a probe-off condition. A physiological sensor may be used to emit one or more wavelengths of light. A received light signal may be processed to obtain a light signal corresponding to the emitted light and an ambient signal. The signals may be analyzed to identify similar behavior. The system may determine whether the physiological sensor is properly positioned based on the analysis.
    Type: Grant
    Filed: December 22, 2012
    Date of Patent: December 30, 2014
    Assignee: Covidien LP
    Inventors: Paul Stanley Addison, James Nicholas Watson
  • Patent number: 8902433
    Abstract: The present disclosure relates to an accommodating device for a dispensing or infusion device, comprising: a displaceable element which is displaced within the accommodating device when a cartridge is inserted into the accommodating device; and at least one sensor which can detect the presence or absence of the displaceable element or a detection element disposed on or in the displaceable element.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: December 2, 2014
    Assignee: Roche Diagnostics International AG
    Inventors: Andreas Schlaeppi, Jean-Noel Fehr, Stefan Lindegger
  • Patent number: 8887823
    Abstract: A surveying system comprises a plurality of rotary laser devices (1a, 1b), being installed at known points, for projecting laser beams (3a, 3b) in rotary irradiation and for forming laser reference planes (RPa, RPb) respectively, a photodetecting device (5), being installed on a movable support member (4), for receiving the laser beam and for detecting a height of each of the laser reference planes at their photodetecting position, a coordinate position measuring device (6) for detecting coordinate position of the support member, and a control device (7), wherein the rotary laser devices form the laser reference planes in such manner that at least a part of each effective range of the laser reference planes is overlapped on each other, the control device sets up a smoothing area within a range where the effective ranges are overlapped on each other, and in case the support member is judged to be within the smoothing area, based on a result of measurement by the coordinate position measuring device, the contro
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: November 18, 2014
    Assignee: Kabushiki Kaisha TOPCON
    Inventors: Fumihiko Kamizono, Kunihiro Hayashi
  • Patent number: 8878903
    Abstract: The disclosure relates to a method for reconstruction of a three-dimensional image of an object. A first image is acquired of the object lit by a luminous flux having, in a region including the object, a luminous intensity dependant on the distance, with a light source emitting the luminous flux. A second image is acquired of the object lit by a luminous flux having, in a region including the object, a constant luminous intensity. For each pixel of a three-dimensional image, a relative distance of a point of the object is determined as a function of the intensity of a pixel corresponding to the point of the object in each of the acquired images.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: November 4, 2014
    Assignee: STMicroelectronics (Grenoble) SAS
    Inventors: Cédric Tubert, Jérôme Vaillant
  • Patent number: 8860954
    Abstract: A measurement device comprises a carrier 20 adapted to be supported, in use, at least partially within a tubular body, a laser metrology unit 28 including means mounted on the carrier 20 whereby a laser beam 32 can be transmitted radially from the carrier 20 and whereby reflected light can be received, the carrier 20 being movable relative to the tubular body to adjust the position of the said means relative to the body, and a scale arrangement whereby the position of the carrier can be determined.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: October 14, 2014
    Assignee: Schlumberger Technology Corporation
    Inventor: Helen Elizabeth Rich
  • Patent number: 8823953
    Abstract: 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: Grant
    Filed: May 13, 2009
    Date of Patent: September 2, 2014
    Assignee: Ferag AG
    Inventor: Carl Conrad Maeder
  • Patent number: 8817273
    Abstract: A dark field diffraction based overlay metrology device illuminates an overlay target that has at least three pads for an axis, the three pads having different programmed offsets. The overlay target may be illuminated using two obliquely incident beams of light from opposite azimuth angles or using normally incident light. Two dark field images of the overlay target are collected using ±1st diffraction orders to produce at least six independent signals. For example, the +1st diffraction order may be collected from one obliquely incident beam of light and the ?1st diffraction order may be collected from the other obliquely incident beam of light. Alternatively, the ±1st diffraction orders may be separately detected from the normally incident light to produce the two dark field images of the overlay target. The six independent signals from the overlay target are used to determine an overlay error for the sample along the axis.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: August 26, 2014
    Assignee: Nanometrics Incorporated
    Inventors: Hwan J. Jeong, Silvio J. Rabello, Thomas Andre Casavant
  • Patent number: 8810802
    Abstract: A drilling apparatus and control method is disclosed. An auxiliary device can be connected to a drilling machine. The auxiliary device includes a camera aligned in a working direction for recording an image of a working surface and a drill hole generated by the drilling machine. An image processing device is provided for identifying the drill hole in the image. Based on a distance from the drill hole to a reference point in the image, an evaluation device determines a distance from the drilling machine to the workpiece. A display device serves to indicate the determined distance.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: August 19, 2014
    Assignee: Hilti Aktiengesellschaft
    Inventors: Peer Schmidt, Roland Schaer, Alexander Liniger, David Leuzinger
  • Patent number: 8797296
    Abstract: A method and device are provided for adjusting brightness of an optical touch panel. The optical touch panel comprises a microprocessor, a display module including a back light source, and an optical position detection device including optical transmitting devices and optical receiving devices. The method comprises detecting, via the optical receiving devices, a current ambient light level on the display module. The method further comprises generating, via the optical receiving devices, a current ambient light level signal indicative of the current ambient light level and transmitting the current ambient light level signal to the microprocessor. Furthermore, the method comprises adjusting, via the microprocessor, brightness of the back light source based on the current ambient light level signal.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: August 5, 2014
    Assignee: Toshiba Global Commerce Solutions Holdings Corporation
    Inventors: Tsung Hsuan Hsieh, Wei Yi Hsuan, Yi Sheng Lee, Robert David Parsons, Chia Lin Yang
  • Publication number: 20140211216
    Abstract: A projector includes a projection portion including a laser beam generation portion and a scanning portion scanning a laser beam, projecting an image, a light detection sensor provided separately from the projection portion, including a light receiving portion receiving the laser beam reflected by a detection object, and a control portion acquiring the position of the detection object on the image on the basis of a detection result of the laser beam.
    Type: Application
    Filed: January 8, 2014
    Publication date: July 31, 2014
    Applicant: Funai Electric Co., Ltd.
    Inventor: Daisuke YAMAGIWA
  • Patent number: 8767219
    Abstract: 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: Grant
    Filed: December 8, 2009
    Date of Patent: July 1, 2014
    Inventor: Paul Edmond Rutten
  • Patent number: 8749798
    Abstract: Method and system for measuring an opening at least partially defined by a surface. A plurality of target bodies are positioned about a circumference of a target body holder that is sized to fit within the opening. The target bodies are forced radially outward to cause at least one of the target bodies to be positioned against the surface. A geometric property of the opening is determined based at least partially on a location of at least one of the target bodies positioned against the surface.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: June 10, 2014
    Assignee: The Boeing Company
    Inventor: Clayton Wyatt Lemmons
  • Patent number: 8742312
    Abstract: A planar detector for use in light curtains, which generates electric signals as a function of absorbed light and is provided with a plurality of tapping points for the generated signals. The magnitude of the signals at the respective tapping points is dependent on their distance to the partial surfaces where the light is absorbed. As a function of the magnitude ratios between the signals at several tapping points, the distance ratios of the respective tapping points to those partial surfaces, where the light is absorbed, can be calculated. The detector is configured as a flexible layered structure made of organic material. The tapping points are disposed at a distance from the edges of the layered structure. Electric connection lines to the tapping points are connected along their longitudinal extension to the layered structure of the detector.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: June 3, 2014
    Assignee: Isiqiri Interface Technologies GmbH
    Inventor: Richard Ebner
  • Patent number: 8736905
    Abstract: A method for position calibration of a spot of an optical sensor may include providing a position calibration patch on a sheet at a predetermined position, along a scan path of the spot across the sheet, the patch comprising at least two adjacent blocks of different colors. The method may also include obtaining a single sample of the position calibration patch using the optical sensor. The method may further include determining from the single sample the position of the spot of the sensor with respect to the position calibration patch.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: May 27, 2014
    Assignee: Hewlett-Packard Indigo B.V.
    Inventors: Nadav Barkai, Gal Amit, Lior Katz
  • Patent number: 8714749
    Abstract: A projection display device having a projection device projecting an image on a surface, and a position detection function of detecting an object's position between the surface and the projection device, includes: a light source emitting light beams toward the object; a light detector detecting the light beams reflected by the object; and a position detector detecting the object's position in an imaginary plane based on the light detector's result, wherein the light source emits, as the light beams, first through third light beams having first through third intensity distributions, the second intensity distribution having a highest intensity at a position failing to overlap a highest intensity of the first intensity distribution, and the third intensity distribution having a highest intensity portion at a position failing to overlap a straight line connecting the highest intensity portions of the first and second intensity distributions.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: May 6, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Daisuke Nakanishi
  • Patent number: 8711369
    Abstract: The invention relates to a laser receiver for detecting a relative position of a defined zero point of said laser receiver with respect to a reference laser beam. Therefore, the laser receiver comprises a laser light photo sensor having a plurality of photo sensitive elements providing an electrical output when illuminated by said reference laser beam, a circuitry connected to said photo sensor for determination of said relative position and a visible readout for indication of said relative position, in particular for indicating if said zero point is on-grade with respect to said reference laser beam. According to the invention, at least a first laser fan emitter, with a laser light source and at least one fan-generating optical element, is provided for projecting a visible laser line onto a target surface, particularly in order to re-project a sharp marking-line through the vertical center of the reference laser beam.
    Type: Grant
    Filed: November 26, 2009
    Date of Patent: April 29, 2014
    Assignee: Leica Geosystems AG
    Inventor: Clayton Eugene Campagna
  • Patent number: 8706264
    Abstract: 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: Grant
    Filed: December 17, 2008
    Date of Patent: April 22, 2014
    Assignee: Cognex Corporation
    Inventor: Dale Peterson
  • Patent number: 8699035
    Abstract: An inspection apparatus and an inspection method is provided having a wafer chuck stage equipped with one or more wafer chucks; a position measurement unit for measuring the positions of the light emitting devices on each of the expanded wafers loaded respectively on the wafer chucks; a photodetector and at least one probe provided corresponding to each of the expanded wafers; and a control unit provided with means for moving the wafer chuck stage in the X axis and/or Y-axis directions such that the light emitting devices on each of the expanded wafers are sequentially brought under the corresponding probes, means for moving each of the probes to a place corresponding to the electrodes in the light emitting devices, and means for bringing the probes into contact with the corresponding electrodes.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: April 15, 2014
    Assignee: Kabushiki Kaisha Nihon Micronics
    Inventors: Syu Jimbo, Norie Yamaguchi, Keita Koyahara
  • Patent number: 8681344
    Abstract: In an embodiment a method for position determination of an object in a spatial area is provided in which the object is illuminated with at least one light beam. The light beam does not cover the complete spatial area and is guided into a part of the spatial area in which the object is present depending on the position of the object. In another aspect a method for measuring a surface is provided.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: March 25, 2014
    Assignee: Carl Zeiss AG
    Inventors: Bernd Spruck, Cristina Alvarez Diez, Simon Brattke, Lars-Christian Wittig, Stefan Richter, Enrico Geissler, Christian Koos, Oliver Schmidt, Frank Hoeller
  • Patent number: 8638449
    Abstract: A measuring device comprising a light source unit for projecting a pulsed distance measuring light, a projecting light optical system, a light receiving optical system for receiving a reflected pulsed distance measuring light, a light receiving part having a single photodetector, and a control unit for measuring a distance by measuring time from light emission of the pulsed distance measuring light to receipt of the reflected pulsed distance measuring light is disclosed. The light source unit has a plurality of light emitting sources arranged in a known relation and a driving unit for driving the light emitting sources at a predetermined time interval. The light receiving part has a reduced optical system arranged at position conjugate to the light emitting source for guiding the reflected pulsed distance measuring light to the photodetector. The control unit is designed to identify a photodetection signal by matching it with the light emitting source.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: January 28, 2014
    Assignee: Kabushiki Kaisha TOPCON
    Inventors: Fumio Ohtomo, Kaoru Kumagai
  • Publication number: 20140022543
    Abstract: A device for determining the position of a first mechanical element relative to a second mechanical element, having a first measurement unit for attachment to the first mechanical element, a second measurement unit for attachment to the second mechanical element, and an evaluation unit. The first measurement unit emits spectrally differing first and second light beams in essentially the same direction and a position-sensitive optical detector. The second measurement unit has a reflector arrangement facing the first measurement unit, in order to reflect the first and second light beams onto the detector. Surfaces facing the first measurement unit being color splitters having different reflectivity/transmissibility for the first light beam and the second light beam. The evaluation unit determines the location of the first and second mechanical elements relative to one another from the incidence positions of the reflected first and second light beams on the detector.
    Type: Application
    Filed: June 27, 2013
    Publication date: January 23, 2014
    Inventor: Heinrich Lysen
  • Patent number: 8629989
    Abstract: A light receiving unit of a coordinate input apparatus includes a light receiving element, a light receiving lens, an adjusting unit for adjusting the positional relationship between the light receiving element and light receiving lens, and a light transmissive plate which is arranged between the light receiving element and light receiving lens, and defines the focal length of the light receiving lens. The light transmissive plate is arranged between the light receiving element and light receiving lens in a state in which the optical axis between the light receiving element and light receiving lens is adjusted by the adjusting unit with the light transmissive plate being removed.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: January 14, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuyuki Kobayashi, Yuichiro Yoshimura
  • Patent number: 8629988
    Abstract: An apparatus and method for providing image contrast enhancement is disclosed. A mobile object is equipped with a laser source, polarization filter, and imaging apparatus. The reflection of the laser source output passes through the filter and is received by the imaging apparatus. If the output of the laser source impinges a metallic marker plate located at a pre-determined location, the filter decreases the intensity level of image components not associated with the reflection of the laser source output. The imaging apparatus uses such filtered image components to determine the position and/or orientation of the mobile object.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: January 14, 2014
    Assignee: JAVAD GNSS, Inc.
    Inventor: Mikhail Gribkov
  • Patent number: 8625108
    Abstract: Described herein is a projective optical metrology system including: a light target equipped with a plurality of light sources having a pre-set spatial arrangement; an optoelectronic image sensor; an optical unit receiving a light signal coming from the light target and defining two different optical paths for the light signal towards the optoelectronic image sensor, the two optical paths being such as to cause simultaneous formation on the optoelectronic image sensor of at least two images of the light target; and an electronic processing unit coupled to the optoelectronic image sensor and determining a plurality of different quantities indicating the position and attitude of the light target with respect to the optical unit, on the basis of the two images.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: January 7, 2014
    Assignee: Thales Alenia Space Italia S.p.A. Con Unico Socio
    Inventors: Fulvio Bresciani, Fabio Musso
  • Patent number: 8606426
    Abstract: A system includes a displacement sensor, an actuator connected to the displacement sensor, and a feedback unit. The displacement sensor is configured to measure at least one of a relative position and a relative orientation between the displacement sensor and the target object. The feedback unit receives a signal from the displacement sensor related to the measured relative position or relative orientation and controls the actuator to move the displacement sensor on the basis of variations in the received signal arising due to a change in environmental conditions.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: December 10, 2013
    Assignee: Academia Sinica
    Inventors: Ing-Shouh Hwang, En-Te Hwu, Hans Ulrich Danzebrink, Hartmut Illers
  • Patent number: 8605291
    Abstract: An image correlation displacement sensor is provided for measuring yaw rotation relative to a target surface using a simple configuration compatible with a fast measurement sample rate. The image correlation displacement sensor may include: an illumination portion (130) which emits illumination light to the target surface to produce a speckle field; an imaging portion (240) which captures a plurality of images including the speckle fields produced on the target surface; and a processing portion (200) which measures a displacement including a rotation about a yaw axis of the target surface in accordance with first and second region translational displacements determined based on the plurality of images captured along the first optical path and the second optical path, and a known separation between the first and second regions.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: December 10, 2013
    Assignee: Mitutoyo Corporation
    Inventor: Joseph Daniel Tobiason
  • Patent number: 8593649
    Abstract: A defect detector for corrugated cardboard flutes comprises an optical projector for projecting to traveling flutes an inspection light having an effective line of which the length is about one pitch of flutes inclined slightly so that a tip of a normal flute is positioned on or slightly under the posterior end of the effective line and simultaneously a slope of an adjacent normal flute is positioned on the anterior end side of the effective line, an optical receiver equipped with a light-receiving element for receiving the inspection light reflected by a flute to output information according to the light-receiving position, and normal or abnormal determining means which determines that the flute height is normal if the light-receiving position detected is within an allowable range Wp.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: November 26, 2013
    Assignee: Phonic Co., Ltd.
    Inventor: Shinichi Mouri
  • Patent number: 8587790
    Abstract: In a light source unit of an optical position detecting device, a plurality of light emitting devices are mounted on a band-shaped flexible substrate, and the plurality of light emitting devices emit detection light. The flexible substrate is arranged so as to overlap a convex face of a substrate supporting member, and accordingly, in a case where the flexible substrate is too long, the end portion of the flexible substrate can be inserted into a notch. Therefore, there is no case in which the flexile substrate floats.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: November 19, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Kanechika Kiyose
  • Patent number: 8575581
    Abstract: An apparatus includes: a body including a port into which a medium is insertable; a light source that is provided in the body and illuminates when an image is read for the medium that has been inserted into the port; a guide and output unit that is optically connected to the light source, guides light emitted from the light source, and outputs the guided light into the port; a receiver that detects the output light; and a determiner that determines whether the medium has been inserted into the port based on a result of the detection. The light source also illuminates when the determiner makes the determination. A region in the port through which the light output from the light guide and output unit passes exists from one end to the other end of the port in a width direction being a longitudinal direction of the port.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: November 5, 2013
    Assignee: PFU Limited
    Inventor: Mikio Murosaki
  • Patent number: 8562150
    Abstract: A projection type display apparatus in which an inclination and a positional deviation of optical axes among a plurality of light sources can be easily corrected to obtain a high quality projection image. Green, blue and red laser beams emitted from light sources are converted into collimated beams by condenser lenses, and the positions and angles of the optical axes of the beams of the three colors are evaluated by position detection imaging device and angle detection imaging device, respectively. The positions and angles of the light sources are adjusted by respective actuators so that the positions and angles of the optical axes match each other. Consequently, the laser beams emitted from the light sources can be combined with high accuracy to thereby realize a high definition projection type display apparatus.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: October 22, 2013
    Assignee: Hitachi, Ltd.
    Inventor: Jiro Hashizume
  • Patent number: 8559020
    Abstract: 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.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: October 15, 2013
    Assignee: Sick AG
    Inventor: Gerhard Merettig
  • Patent number: 8553235
    Abstract: A cursor maneuvering device comprises a cavity containing a plurality of colored lights and an image sensor and covered with a light mixing plate. The colored lights are located in the cavity in an as largely departed as possible manner and illuminate a pointing device contacting the surface of the light mixing plate. The image sensor detects a hue of light illuminating the pointing device and controls a cursor depending upon the hue. Changes in the hue of a moving pointing device are translated into movement of the cursor on the display of an electronic device. The pointing device may be anything touching the light mixing plate, for instance a finger.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: October 8, 2013
    Inventor: Wen-Chieh Geoffrey Lee
  • Patent number: 8537374
    Abstract: A portable articulated arm coordinate measuring machine (AACMM) is provided. The AACMM includes a manually positionable articulated arm having opposed first and second ends. The arm includes a plurality of connected arm segments, each of the arm segments including at least one position transducer for producing a position signal. A measurement device is attached to a first end of the AACMM. An electronic circuit is provided for receiving the position signals from the transducers and for providing data corresponding to a position of the measurement device. A light source is coupled to the arm and disposed to emit light adjacent the measurement device.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: September 17, 2013
    Assignee: Faro Technologies, Inc.
    Inventors: Clark H. Briggs, David Danielson
  • Patent number: 8537377
    Abstract: In an absolute position encoder, a multi-spectral light source illuminates a position on a topographic surface at an angle of incidence determined from a vector normal to the surface. A target on, and positionally-registered to, the topographic surface comprises a variable grating that diffracts the incident light to form a multi-spectral diffraction pattern in which the angular dispersion of the diffraction pattern varies with the absolute position of the incident light along the grating. A chromatically responsive sensor detects a narrow band of the diffraction pattern through an entrance aperture positioned at an angle of detection determined from the vector normal to the topographic surface and outputs a signal responsive to the change in the angular dispersion of the detected narrow band of the diffraction pattern. The source/sensor unit maintains (within an acceptable noise tolerance) its geometric relationship to the vector normal to the topographic surface at the position of illumination.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: September 17, 2013
    Assignee: Raytheon Company
    Inventor: Michael K. Burkland
  • Patent number: 8526013
    Abstract: A batteryless absolute encoder determines the accuracy of absolute position information to be output when electric power is turned on and outputs an alarm signal in the case of abnormality. The batteryless absolute encoder includes an absolute position computing section, an absolute position storing section, and a determining section. The absolute position computing section computes the absolute position of a spindle to be detected, including the number of revolutions of the spindle, based upon detection signals output from four reluctance resolvers. The absolute position storing section stores the absolute position output from the absolute position computing section when electric power is turned off. The determining section compares an absolute position output from the absolute position computing section when electric power is turned on and the stored absolute position and outputs an alarm signal if a difference between the two absolute positions is larger than a predetermined value.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: September 3, 2013
    Assignee: Sanyo Denki Co., Ltd.
    Inventors: Kazuhiro Makiuchi, Tomohito Yamazaki, Tooru Miyajima, Shigeharu Katou, Toshiaki Ayuzawa
  • Patent number: 8507886
    Abstract: Optical sensor system on a device for the treatment of liquids with at least one device for the projecting of light in the direction of an optical axis onto at least one illumination area in the space, an adjustment device for the adjustment of the relative position of the at least one illumination area and a boundary surface in a direction diagonal to the optical axis, an adjustment device for the adjustment of the relative position of the at least one illumination area and the boundary surface in the direction of the optical axis, a control device for controlling the adjustment devices, such that they simultaneously adjust the relative position of the at least one illumination area and the boundary surface diagonal to the at least one device for the imaging of the at least one illumination area during the adjustment of the relative position onto at least one photodetector and an evaluation device connected with the at least one photodetector for the evaluation of the at least one measurement signal.
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: August 13, 2013
    Assignee: Eppendorf AG
    Inventors: Reinhold Götz, Kurt Harnack, Helmut Knofe, Jens-Peters Kroog, Peter Scheffler
  • Patent number: 8510029
    Abstract: A method for defining a following path for a following vehicle to autonomously follow a leader, the method including acquiring waypoints associated with a path that the leader traverses; filtering the acquired waypoints, wherein the filtering removes waypoints located outside an area of interest; generating intermediate waypoints by interpolating between adjacent pairs of the filtered waypoints if the adjacent pairs of the filtered waypoints are separated by a distance that exceeds a threshold distance; and defining a following path through the filtered waypoints and the intermediate waypoints using a least-squares spline fit to calculate the following path.
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: August 13, 2013
    Assignee: Southwest Research Institute
    Inventors: Joshua J. Curtis, George T. McWilliams, Kristopher C. Kozak
  • Patent number: 8493573
    Abstract: High-resolution optical position sensing is disclosed using sparse, low-resolution detectors. Precise location of two-dimensional position or angular orientation of an optical beam at the focal plane of a sensor system is made possible using sparse low-resolution detectors. The beam may be emitted directly from a source, or scattered from a remote target. The high precision in determining the beam or focal spot location is the result of a novel data processing and analysis method for the signals from the low-resolution detectors.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: July 23, 2013
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: Stephen R. Chinn, Lew Goldberg
  • Patent number: 8462359
    Abstract: A position measuring device includes a plurality of concave marks, a light source portion, a light receiving portion, and a concave portion measuring portion. The concave marks are formed on an external wall of an object to be a measuring target. Each of the plurality of the concave marks includes a plurality of concave portions disposed on a concentric circle with a preset concave mark central position to be a center of the concentric circle. The concave portions are provided so that densities of the concave portions become lower as distances from the concave mark central position become longer in each of the concave marks. The light source portion irradiates the object with an irradiating light. The light receiving portion receives a reflected light from the object, the refracted light being originated from the irradiating light. The concave portion measuring portion measures each three-dimensional position of the concave marks.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: June 11, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Naoki Koike
  • Patent number: RE44434
    Abstract: An optical position measuring system (e.g., an interferometer) includes a superluminescent device (SLD) (e.g., a laser diode having at least one anti-reflective coated surface) and a detector. The SLD generates a light beam having a short coherence length (e.g., about 0.1 mm to about 0.5 mm, less than the optical path length of an optical element, and/or less than a spacing between optical elements). Through use of the short coherence length light beam, interference effects from spurious or ghost reflections that exist in conventional position measuring systems are substantially reduced or eliminated.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: August 13, 2013
    Assignee: ASML Holding N.V.
    Inventor: J. Christian Swindal