Patents by Inventor Lawrence B. Brown

Lawrence B. Brown has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10082521
    Abstract: A system that measures six degrees-of-freedom of a remote target, the system including a dimensional measuring device having a camera, the remote target including a retroreflector, at least three light markers, and a pitch-yaw sensor, the six degrees-of-freedom determined based at least in part on measured 3D coordinates of the retroreflector by the dimensional measuring device, on a captured image of the at least three light markers by the camera, and on readings of the pitch-yaw sensor.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: September 25, 2018
    Assignee: FARO TECHNOLOGIES, INC.
    Inventors: Mikhail Atlas, Lawrence B. Brown, William W. Christine, Max K. Kim, Daniel J. O'Neill, James Schloss, Zhiguang Willam Xu, Robert E. Bridges
  • Patent number: 9989350
    Abstract: A method for measuring a distance includes modulating the light beam at a first frequency, receiving a second beam by the optical detector to produce a first electrical signal having the first frequency and a first phase; modulating the light beam at a second frequency different than the first frequency; receiving the second beam by the optical detector to produce a second electrical signal having the second frequency and a second. After these steps, the retroreflector is moved while modulating the light beam continuously at the second frequency; and a first distance to the retroreflector is determined based at least in part on a the first and second frequencies and phases.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: June 5, 2018
    Assignee: FARO TECHNOLOGIES, INC.
    Inventors: Robert E. Bridges, Lawrence B. Brown, James K. West, D. Scott Ackerson
  • Patent number: 9903934
    Abstract: A dimensional measuring device sends a beam of light to a remote probe having a retroreflector and a pitch/yaw sensor. The pitch/yaw sensor passes the light through an aperture and a lens to a position sensor that generates an electrical signal indicative of the position of the received light. A processor uses the electrical signal to determine a pitch angle and a yaw angle of the remote probe.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: February 27, 2018
    Assignee: FARO TECHNOLOGIES, INC.
    Inventors: Mathieu Antoina, Lawrence B. Brown, Jonathan R. Day, Matthew Frederick Evans, Ricardo Martins, Jacob J. Mertz, John Mountney, Robert Mark Neal, James Schloss, Quintin Stotts, Ding Wang, Robert E. Bridges
  • Patent number: 9631921
    Abstract: A method for measuring a distance includes modulating the light beam at a first frequency, receiving a second beam by the optical detector to produce a first electrical signal having the first frequency and a first phase; modulating the light beam at a second frequency different than the first frequency; receiving the second beam by the optical detector to produce a second electrical signal having the second frequency and a second. After these steps, the retroreflector is moved while modulating the light beam continuously at the second frequency; and a first distance to the retroreflector is determined based at least in part on a the first and second frequencies and phases.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: April 25, 2017
    Assignee: FARO TECHNOLOGIES, INC.
    Inventors: Robert E. Bridges, Lawrence B. Brown, James K. West, D. Scott Ackerson
  • Patent number: 9631922
    Abstract: A method for measuring a distance includes modulating the light beam at a first frequency, receiving a second beam by the optical detector to produce a first electrical signal having the first frequency and a first phase; modulating the light beam at a second frequency different than the first frequency; receiving the second beam by the optical detector to produce a second electrical signal having the second frequency and a second. After these steps, the retroreflector is moved while modulating the light beam continuously at the second frequency; and a first distance to the retroreflector is determined based at least in part on a the first and second frequencies and phases.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: April 25, 2017
    Assignee: FARO TECHNOLOGIES, INC
    Inventors: Robert E. Bridges, Lawrence B. Brown, James K. West, D. Scott Ackerson
  • Publication number: 20170108528
    Abstract: A system that measures six degrees-of-freedom of a remote target, the system including a dimensional measuring device having a camera, the remote target including a retroreflector, at least three light markers, and a pitch-yaw sensor, the six degrees-of-freedom determined based at least in part on measured 3D coordinates of the retroreflector by the dimensional measuring device, on a captured image of the at least three light markers by the camera, and on readings of the pitch-yaw sensor.
    Type: Application
    Filed: December 29, 2016
    Publication date: April 20, 2017
    Inventors: Mikhail Atlas, Lawrence B. Brown, William W. Christine, Max K. Kim, Daniel J. O'Neill, James Schloss, Zhiguang Willam Xu, Robert E. Bridges
  • Publication number: 20170023352
    Abstract: A method for measuring a distance includes modulating the light beam at a first frequency, receiving a second beam by the optical detector to produce a first electrical signal having the first frequency and a first phase; modulating the light beam at a second frequency different than the first frequency; receiving the second beam by the optical detector to produce a second electrical signal having the second frequency and a second. After these steps, the retroreflector is moved while modulating the light beam continuously at the second frequency; and a first distance to the retroreflector is determined based at least in part on a the first and second frequencies and phases.
    Type: Application
    Filed: October 6, 2016
    Publication date: January 26, 2017
    Inventors: Robert E. Bridges, Lawrence B. Brown, James K. West, D. Scott Ackerson
  • Publication number: 20170003372
    Abstract: A dimensional measuring device sends a beam of light to a remote probe having a retroreflector and a pitch/yaw sensor. The pitch/yaw sensor passes the light through an aperture and a lens to a position sensor that generates an electrical signal indicative of the position of the received light. A processor uses the electrical signal to determine a pitch angle and a yaw angle of the remote probe.
    Type: Application
    Filed: June 28, 2016
    Publication date: January 5, 2017
    Inventors: Mathieu Antoina, Lawrence B. Brown, Jonathan R. Day, Matthew Frederick Evans, Ricardo Martins, Jacob J. Mertz, John Mountney, Robert Mark Neal, James Schloss, Quintin Stotts, Ding Wang, Robert E. Bridges
  • Publication number: 20160069665
    Abstract: A method for measuring a distance includes modulating the light beam at a first frequency, receiving a second beam by the optical detector to produce a first electrical signal having the first frequency and a first phase; modulating the light beam at a second frequency different than the first frequency; receiving the second beam by the optical detector to produce a second electrical signal having the second frequency and a second. After these steps, the retroreflector is moved while modulating the light beam continuously at the second frequency; and a first distance to the retroreflector is determined based at least in part on a the first and second frequencies and phases.
    Type: Application
    Filed: November 16, 2015
    Publication date: March 10, 2016
    Inventors: Robert E. Bridges, Lawrence B. Brown, James K. West, D. Scott Ackerson
  • Publication number: 20150377604
    Abstract: A device including a zoom-camera assembly having a first lens group, a magnifier lens group, a beam splitter, an imaging sensor, a motor, and an illuminator, the illuminator generating a first beam of light and cooperating with the beam splitter to send the beam of light through the first lens group to a retroreflector, the first lens group receiving the second beam of light and cooperating with the beam splitter to pass the received second beam of light through the magnifier lens group onto the imaging sensor, the motor adjusting a spacing between the first lens group and the magnifier lens group.
    Type: Application
    Filed: June 22, 2015
    Publication date: December 31, 2015
    Inventors: Robert E. Bridges, Lawrence B. Brown, Robert Mark Neal
  • Publication number: 20150331159
    Abstract: A retroreflector includes a glass prism having three mutually perpendicular planar reflecting faces and a front face, the three reflecting faces intersecting in intersecting lines each having a mark, the front surface including three marks, each of the marks on the intersecting lines and the front surface having a different angle in a 2D image obtained a camera for any angle of an optical axis of the camera from 0 to 45 degree relative to a vector normal of the front face.
    Type: Application
    Filed: June 25, 2015
    Publication date: November 19, 2015
    Inventors: Robert E. Bridges, Lawrence B. Brown
  • Publication number: 20150211851
    Abstract: A method for measuring a distance includes modulating the light beam at a first frequency, receiving a second beam by the optical detector to produce a first electrical signal having the first frequency and a first phase; modulating the light beam at a second frequency different than the first frequency; receiving the second beam by the optical detector to produce a second electrical signal having the second frequency and a second. After these steps, the retroreflector is moved while modulating the light beam continuously at the second frequency; and a first distance to the retroreflector is determined based at least in part on a the first and second frequencies and phases.
    Type: Application
    Filed: April 13, 2015
    Publication date: July 30, 2015
    Inventors: Robert E. Bridges, Lawrence B. Brown, James K. West, D. Scott Ackerson
  • Patent number: 8958055
    Abstract: A laser based coordinate measuring device measures a position of a remote target. The laser based coordinate measuring device includes a stationary portion, a rotatable portion, and at least a first optical fiber. The stationary portion has at least a first laser radiation source and at least a first optical detector, and the rotatable portion is rotatable with respect to the stationary portion. The first optical fiber system, which optically interconnects the first laser radiation source and the first optical detector with an emission end of the first optical fiber system, has the emission end disposed on the rotatable portion. The emission end emits laser radiation to the remote target and receives laser radiation reflected from the remote target with the emission direction of the laser radiation being controlled according to the rotation of the rotatable portion.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: February 17, 2015
    Assignee: Faro Technologies, Inc.
    Inventors: Robert E. Bridges, Lawrence B. Brown, James K. West, D. Scott Ackerson
  • Publication number: 20140340750
    Abstract: A target and method of manufacturing the target is provided. The method of manufacturing includes providing the cube cornered retroreflector, the cube cornered retroreflector including a first, second and third planar reflectors. Each planar reflector capable of reflecting light, each planar reflector perpendicular to the other two planar reflectors, each planar reflector intersecting the other two planar reflectors in a common vertex, and each planar reflector having two intersection junctions. Each intersection junction shared with an adjacent planar reflector for a total of three intersection junctions within the cube corner retroreflector. The method further including the step of directing ions from a focused ion beam etching (FIBE) device onto the first intersection junction defined by the first planar reflector and second planar reflector. A first material is removed from at least a first portion of the first intersection junction to define a first non-reflecting portion.
    Type: Application
    Filed: April 21, 2014
    Publication date: November 20, 2014
    Applicant: FARO Technologies, Inc.
    Inventors: Robert Mark Neal, Lawrence B. Brown, Peter G. Cramer, Jonathan Robert Day, Matthew Frederick Evans, Aurelian Mavrodin
  • Patent number: 8740396
    Abstract: A target includes a cube corner retroreflector including three planar reflectors, each planar reflector capable of reflecting light, each planar reflector perpendicular to the other two planar reflectors, each planar reflector intersecting the other two planar reflectors in a common vertex, and each planar reflector having two intersection junctions, each intersection junction shared with an adjacent planar reflector for a total of three intersection junctions within the cube corner retroreflector. The target further includes a non-reflecting portion of each intersection junction, wherein, for at least one intersection junction, the non-reflecting portion is wider in a first region than in a second region.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: June 3, 2014
    Assignee: Faro Technologies, Inc.
    Inventors: Lawrence B. Brown, Daniel G. Lasley, Jeremy M. Garey, Nils P. Steffensen
  • Patent number: 8681320
    Abstract: A method includes providing: an optics assembly including a housing, a beam splitter, and a position detector; and an alignment fixture; placing the assembly on the fixture which makes contact with the assembly on the first region; projecting the third beam of light onto a first surface; rotating the assembly about the sixth axis on the fixture; sensing a change in a position of the third beam of light in response to rotation of the assembly about the sixth axis; adjusting the first path to align the third beam of light to the sixth axis; attaching the assembly to a dimensional measurement device; directing the third beam of light to a retroreflector target; reflecting a portion of the third beam from the target as a fourth beam of light; and sending a third portion of the fourth beam from the beam splitter to the position detector.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: March 25, 2014
    Assignee: Faro Technologies, Inc.
    Inventors: Jonathan Robert Day, Lawrence B. Brown, James K. West
  • Patent number: 8670114
    Abstract: A laser tracker system for measuring six degrees of freedom may include a main optics assembly structured to emit a first laser beam, a pattern projector assembly structured to emit a second laser beam shaped into a two-dimensional pattern, and a target. The target may include a retroreflector and a position sensor assembly. A center of symmetry of the retroreflector may be provided on a different plane than a plane of the position sensor assembly. A method of measuring orientation of a target may include illuminating the target with a laser beam comprising a two-dimensional pattern, recording a position of the two-dimensional pattern on a position sensor assembly to create a measured signature value of the two-dimensional pattern, and calculating an orientation of the target based on the measured signature value.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: March 11, 2014
    Assignee: FARO Technologies, Inc.
    Inventors: Robert E. Bridges, Lawrence B. Brown, John M. Hoffer, Jr.
  • Publication number: 20130250285
    Abstract: A laser tracker system for measuring six degrees of freedom may include a main optics assembly structured to emit a first laser beam, a pattern projector assembly structured to emit a second laser beam shaped into a two-dimensional pattern, and a target. The target may include a retroreflector and a position sensor assembly. A center of symmetry of the retroreflector may be provided on a different plane than a plane of the position sensor assembly. A method of measuring orientation of a target may include illuminating the target with a laser beam comprising a two-dimensional pattern, recording a position of the two-dimensional pattern on a position sensor assembly to create a measured signature value of the two-dimensional pattern, and calculating an orientation of the target based on the measured signature value.
    Type: Application
    Filed: May 13, 2013
    Publication date: September 26, 2013
    Applicant: FARO Technologies, Inc.
    Inventors: Robert E. Bridges, Lawrence B. Brown, John M. Hoffer, JR.
  • Patent number: 8537376
    Abstract: A device sends a first light beam to a target which returns a portion of the first beam as a second beam. First and second motors direct the first light beam to a first direction determined by first and second angles of rotation about first and second axes. First and second angle measuring devices measure first and second angles of rotation. A distance meter measures a first distance between device and target. A second portion of the second beam passes through a diffuser and onto a position detector which produces a first signal in response. A control system sends a second signal to the first motor and a third signal to the second motor, the second and third signals based on the first signal. The control system adjusts the first direction of the first beam to the target position. A processor provides a 3D coordinate of the target.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: September 17, 2013
    Assignee: Faro Technologies, Inc.
    Inventors: Lawrence B. Brown, Jonathan Robert Day
  • Patent number: RE45565
    Abstract: A laser based coordinate measuring device measures a position of a remote target. The laser based coordinate measuring device includes a stationary portion, a rotatable portion, and at least a first optical fiber. The stationary portion has at least a first laser radiation source and at least a first optical detector, and the rotatable portion is rotatable with respect to the stationary portion. The first optical fiber system, which optically interconnects the first laser radiation source and the first optical detector with an emission end of the first optical fiber system, has the emission end disposed on the rotatable portion. The emission end emits laser radiation to the remote target and receives laser radiation reflected from the remote target with the emission direction of the laser radiation being controlled according to the rotation of the rotatable portion.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: June 16, 2015
    Assignee: FARO TECHNOLOGIES, INC.
    Inventors: Robert E. Bridges, Lawrence B. Brown, James K. West, D. Scott Ackerson