Patents by Inventor Glenn A. Myers

Glenn A. Myers 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: 11009449
    Abstract: Apparatuses and methods for implementing scanning trajectories for ROI tomography are disclosed herein. An example method includes determining a first focus object distance based on a circumradius of a sample, the sample including a region of interest, determining a second focus object distance based on a radius of a smallest cylinder that contains the region of interest, determining a plurality of viewing angles from a plurality of possible viewing angles in response to the first focus object distance, where each viewing angle of the plurality of viewing angles has an associated focus object distance measured from the region of interest, and where the associated focus object distance of each of the plurality of viewing angles is less than the first focus object distance and greater than the second focus object distance, and scanning the region of interest using at least the plurality of viewing angles.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: May 18, 2021
    Assignee: FEI Company
    Inventors: Glenn Myers, Shane Latham, Adrian Sheppard, Olaf Delgado-Friedrichs, Andrew Kingston
  • Patent number: 10902650
    Abstract: Methods and apparatuses disclosed herein provide beam hardening correction to tomographic reconstruction using a simplification to the Alvarez-Macovski attenuation model. An example method includes simplifying a forward projection model, the forward projection model based on an Alvarez-Macovski (AM) attenuation model, wherein the simplification of the forward projection model simplifies the AM attenuation model for one of photoelectric effect only, constant density, constant atomic number, and density proportional to atomic number, and performing an iterative reconstruction of a sample using the simplified forward projection model, the iterative reconstruction weighted by a first spectrum, wherein measured image data of the sample used in the iterative reconstruction is obtained at a first energy, and wherein a reverse operation of the iterative reconstruction is a non-adjoint to the simplified forward projection model.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: January 26, 2021
    Assignee: FEI Company
    Inventors: Qiheng Yang, Glenn Myers, Shane Latham, Adrian Sheppard, Andrew Kingston
  • Publication number: 20190325618
    Abstract: Methods and apparatuses disclosed herein provide beam hardening correction to tomographic reconstruction using a simplification to the Alvarez-Macovski attenuation model. An example method includes simplifying a forward projection model, the forward projection model based on an Alvarez-Macovski (AM) attenuation model, wherein the simplification of the forward projection model simplifies the AM attenuation model for one of photoelectric effect only, constant density, constant atomic number, and density proportional to atomic number, and performing an iterative reconstruction of a sample using the simplified forward projection model, the iterative reconstruction weighted by a first spectrum, wherein measured image data of the sample used in the iterative reconstruction is obtained at a first energy, and wherein a reverse operation of the iterative reconstruction is a non-adjoint to the simplified forward projection model.
    Type: Application
    Filed: August 23, 2018
    Publication date: October 24, 2019
    Inventors: Qiheng YANG, Glenn MYERS, Shane LATHAM, Adrian SHEPPARD, Andrew Kingston
  • Publication number: 20190323946
    Abstract: Apparatuses and methods for implementing scanning trajectories for ROI tomography are disclosed herein. An example method includes determining a first focus object distance based on a circumradius of a sample, the sample including a region of interest, determining a second focus object distance based on a radius of a smallest cylinder that contains the region of interest, determining a plurality of viewing angles from a plurality of possible viewing angles in response to the first focus object distance, where each viewing angle of the plurality of viewing angles has an associated focus object distance measured from the region of interest, and where the associated focus object distance of each of the plurality of viewing angles is less than the first focus object distance and greater than the second focus object distance, and scanning the region of interest using at least the plurality of viewing angles.
    Type: Application
    Filed: March 20, 2019
    Publication date: October 24, 2019
    Inventors: Glenn MYERS, Shane LATHAM, Adrian SHEPPARD, Olaf DELGADO-FRIEDRICHS, Andrew KINGSTON
  • Publication number: 20190293574
    Abstract: Methods and apparatuses are disclosed herein to correct for inconsistencies in CT scans based on pi-lines. An example method at least includes acquiring a plurality of projections of a sample, each projection of the plurality of projections acquired at a different location around the sample based on a trajectory, determining pairs of opposing projections from the plurality of projections based on a respective pi-line, and determining an amount of inconsistency between respective pi-line data for each pair of opposing projections, where the pi-line data is based, at least in part, on attenuation data.
    Type: Application
    Filed: March 20, 2018
    Publication date: September 26, 2019
    Inventors: Andrew KINGSTON, Olaf DELGADO-FRIEDRICHS, Glenn MYERS, Shane LATHAM, Adrian SHEPPARD, Trond VARSLOT, Petr Strelec
  • Publication number: 20190187306
    Abstract: A method of investigating a specimen using a tomographic imaging apparatus comprising: A specimen holder, for holding the specimen; A source, for producing a beam of radiation that can be directed at the specimen; A detector, for detecting a flux of radiation transmitted through the specimen from the source; A stage apparatus, for producing relative motion of the source with respect to the specimen, so as to allow the source and detector to image the specimen along a series of different viewing axes; A processing apparatus, for assembling output from the detector into a tomographic image of at least part of the specimen, which method comprises the following steps: Considering a virtual reference surface that surrounds the specimen and is substantially centered thereon; Considering an incoming point of intersection of each of said viewing axes with this reference surface, thereby generating a set of such intersection points corresponding to said series of viewing axes; Choosing discrete viewing axes in sa
    Type: Application
    Filed: February 25, 2019
    Publication date: June 20, 2019
    Applicant: FEI Company
    Inventors: Andrew Kingston, Shane Latham, Adrian Sheppard, Glenn Myers, Benoit Recur, Heyang Li, Trond Karsten Varslot
  • Patent number: 10254419
    Abstract: A method of investigating a specimen using a tomographic imaging apparatus using a stage for producing relative motion of a source with respect to a specimen, so as to allow the source and a detector to image the specimen along a series of different viewing axes and a processing apparatus for assembling a tomographic image of at least part of the specimen. The investigation is carried out by considering a virtual reference surface that surrounds the specimen and is substantially centered thereon, considering an incoming point of intersection of each of said viewing axes with this reference surface, thereby generating a set of such intersection points corresponding to the series of viewing axes, choosing discrete viewing axes in the series so as to cause the set to comprise a two-dimensional lattice of points located areally on the reference surface in a substantially uniform distribution.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: April 9, 2019
    Assignee: FEI Company
    Inventors: Andrew Kingston, Shane Latham, Adrian Sheppard, Glenn Myers, Benoit Recur, Heyang Li, Trond Karsten Varslot
  • Patent number: 10092180
    Abstract: OCT imaging systems are provided for imaging a spherical-type eye including a source having an associated source arm path and a reference arm having an associated reference arm path coupled to the source path. The reference arm path has an associated reference arm path length. A sample is also provided having an associated sample arm path coupled to the source arm and reference arm paths. A lens having a focal power optimized for a diameter of the spherical-type eye is provided along with a reference arm path length adjustment module coupled to the reference arm. The reference arm path length adjustment module is configured to automatically adjust the reference arm path length such that the reference arm path length is based on an eye diameter of the subject.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: October 9, 2018
    Assignee: Bioptigen, Inc.
    Inventors: Robert H. Hart, Eric L. Buckland, Glenn A. Myers, Joseph A. Izatt, Joseph Elliott Vance
  • Patent number: 10078057
    Abstract: A method of investigating a specimen using a tomographic imaging apparatus, by performing, in multiple iterations, the following steps: (i) Using a Back Projection technique to produce an initial tomogram from a set of initial images; (ii) Subjecting said initial tomogram to a mathematical filtering operation, thereby producing an adjusted tomogram; (iii) Using a Forward Projection technique on said adjusted tomogram to dissociate it into a set of calculated images; (iv) Repeating steps (i)-(iii) until said calculated images satisfy an acceptance criterion.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: September 18, 2018
    Assignee: FEI Company
    Inventors: Andrew Kingston, Shane Latham, Adrian Sheppard, Glenn Myers, Benoit Recur, Heyang Li
  • Publication number: 20180084992
    Abstract: OCT imaging systems are provided for imaging a spherical-type eye including a source having an associated source arm path and a reference arm having an associated reference arm path coupled to the source path. The reference arm path has an associated reference arm path length. A sample is also provided having an associated sample arm path coupled to the source arm and reference arm paths. A lens having a focal power optimized for a diameter of the spherical-type eye is provided along with a reference arm path length adjustment module coupled to the reference arm. The reference arm path length adjustment module is configured to automatically adjust the reference arm path length such that the reference arm path length is based on an eye diameter of the subject.
    Type: Application
    Filed: November 13, 2017
    Publication date: March 29, 2018
    Inventors: Robert H. Hart, Eric L. Buckland, Glenn A. Myers, Joseph A. Izatt, Joseph Elliott Vance
  • Patent number: 9814383
    Abstract: OCT imaging systems are provided for imaging a spherical-type eye including a source having an associated source arm path and a reference arm having an associated reference arm path coupled to the source path. The reference arm path has an associated reference arm path length. A sample is also provided having an associated sample arm path coupled to the source arm and reference arm paths. A lens having a focal power optimized for a diameter of the spherical-type eye is provided along with a reference arm path length adjustment module coupled to the reference arm. The reference arm path length adjustment module is configured to automatically adjust the reference arm path length such that the reference arm path length is based on an eye diameter of the subject.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: November 14, 2017
    Assignee: Bioptigen, Inc.
    Inventors: Robert H. Hart, Eric L. Buckland, Glenn A. Myers, Joseph A. Izatt, Joseph Elliott Vance
  • Publication number: 20170188817
    Abstract: OCT imaging systems are provided for imaging a spherical-type eye including a source having an associated source arm path and a reference arm having an associated reference arm path coupled to the source path. The reference arm path has an associated reference arm path length. A sample is also provided having an associated sample arm path coupled to the source arm and reference arm paths. A lens having a focal power optimized for a diameter of the spherical-type eye is provided along with a reference arm path length adjustment module coupled to the reference arm. The reference arm path length adjustment module is configured to automatically adjust the reference arm path length such that the reference arm path length is based on an eye diameter of the subject.
    Type: Application
    Filed: March 21, 2017
    Publication date: July 6, 2017
    Inventors: Robert H. Hart, Eric L. Buckland, Glenn A. Myers, Joseph A. Izatt, Joseph Elliott Vance
  • Patent number: 9622658
    Abstract: OCT imaging systems are provided for imaging a spherical-type eye including a source having an associated source arm path and a reference arm having an associated reference arm path coupled to the source path. The reference arm path has an associated reference arm path length. A sample is also provided having an associated sample arm path coupled to the source arm and reference arm paths. A lens having a focal power optimized for a diameter of the spherical-type eye is provided along with a reference arm path length adjustment module coupled to the reference arm. The reference arm path length adjustment module is configured to automatically adjust the reference arm path length such that the reference arm path length is based on an eye diameter of the subject.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: April 18, 2017
    Assignee: Bioptigen, Inc.
    Inventors: Robert H. Hart, Eric L. Buckland, Glenn A. Myers, Joseph A. Izatt, Joseph Elliott Vance
  • Publication number: 20170059493
    Abstract: A method of investigating a specimen using a tomographic imaging apparatus comprising: A specimen holder, for holding the specimen; A source, for producing a beam of radiation that can be directed at the specimen; A detector, for detecting a flux of radiation transmitted through the specimen from the source; A stage apparatus, for producing relative motion of the source with respect to the specimen, so as to allow the source and detector to image the specimen along a series of different viewing axes; A processing apparatus, for performing a mathematical reconstruction step whereby output from the detector is compiled into a tomographic image of at least part of the specimen, wherein said reconstruction step is performed in multiple iterations, which comprise the following steps: (i) Using a Back Projection technique to produce an initial tomogram from a set of initial images; (ii) Subjecting said initial tomogram to a mathematical filtering operation, thereby producing an adjusted tomogram; (iii) Using a
    Type: Application
    Filed: July 20, 2016
    Publication date: March 2, 2017
    Applicant: FEI Company
    Inventors: Andrew Kingston, Shane Latham, Adrian Sheppard, Glenn Myers, Benoit Recur, Heyang Li
  • Publication number: 20170052264
    Abstract: A method of investigating a specimen using a tomographic imaging apparatus using a stage for producing relative motion of a source with respect to a specimen, so as to allow the source and a detector to image the specimen along a series of different viewing axes and a processing apparatus for assembling a tomographic image of at least part of the specimen. The investigation is carried out by considering a virtual reference surface that surrounds the specimen and is substantially centered thereon, considering an incoming point of intersection of each of said viewing axes with this reference surface, thereby generating a set of such intersection points corresponding to the series of viewing axes, choosing discrete viewing axes in the series so as to cause the set to comprise a two-dimensional lattice of points located areally on the reference surface in a substantially uniform distribution.
    Type: Application
    Filed: August 15, 2016
    Publication date: February 23, 2017
    Applicant: FEI Company
    Inventors: Andrew Kingston, Shane Latham, Adrian Sheppard, Glenn Myers, Benoit Recur, Heyang Li, Trond Karsten Varslot
  • Patent number: 8860796
    Abstract: Optical coherence tomography (OCT) imaging systems for imaging an eye are provided including a source having an associated source arm path and a reference arm having an associated reference arm path coupled to the source path, the reference arm path having an associated reference arm path length. A sample having an associated sample arm path coupled to the source arm and reference arm paths is provided. A reference arm path length adjustment module is coupled to the reference arm. The reference arm path length adjustment module is configured to automatically adjust the reference arm path length such that the reference arm path length is based on an eye length of the subject. Related methods and computer program products are also provided.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: October 14, 2014
    Assignee: Bioptigen, Inc.
    Inventors: Eric L. Buckland, Robert H. Hart, Glenn A. Myers, Joseph A. Izatt
  • Publication number: 20140293223
    Abstract: OCT imaging systems are provided for imaging a spherical-type eye including a source having an associated source arm path and a reference arm having an associated reference arm path coupled to the source path. The reference arm path has an associated reference arm path length. A sample is also provided having an associated sample arm path coupled to the source arm and reference arm paths. A lens having a focal power optimized for a diameter of the spherical-type eye is provided along with a reference arm path length adjustment module coupled to the reference arm. The reference arm path length adjustment module is configured to automatically adjust the reference arm path length such that the reference arm path length is based on an eye diameter of the subject.
    Type: Application
    Filed: June 11, 2014
    Publication date: October 2, 2014
    Inventors: Robert H. Hart, Eric L. Buckland, Glenn A. Myers, Joseph A. Izatt, Joseph Elliott Vance
  • Patent number: 8783866
    Abstract: OCT imaging systems are provided for imaging a spherical-type eye including a source having an associated source arm path and a reference arm having an associated reference arm path coupled to the source path. The reference arm path has an associated reference arm path length. A sample is also provided having an associated sample arm path coupled to the source arm and reference arm paths. A lens having a focal power optimized for a diameter of the spherical-type eye is provided along with a reference arm path length adjustment module coupled to the reference arm. The reference arm path length adjustment module is configured to automatically adjust the reference arm path length such that the reference arm path length is based on an eye diameter of the subject.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: July 22, 2014
    Assignee: Bioptigen, Inc.
    Inventors: Robert H. Hart, Eric L. Buckland, Glenn A. Myers, Joseph A. Izatt
  • Patent number: 8721080
    Abstract: Systems for imaging structures of a subject are provided. The subject has an optical axis, a pupil, and a nodal point. The system includes an image capture device; a first structure including a mount for the subject to be imaged by the image capture device, the first structure providing at least two rotational degrees of freedom; a second structure including a mount for the image capture device, the second structure providing at least two translational degrees of freedom; and a means for aligning the image capture device in relation to the optical axis, the pupil, and the nodal point of the subject.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: May 13, 2014
    Assignee: Biopgtigen, Inc.
    Inventors: Sunita Sayeram, Joseph Elliott Vance, Pete Huening, Eric L. Buckland, Joseph A. Izatt, Glenn A. Myers
  • Publication number: 20140125952
    Abstract: Optical coherence tomography (OCT) imaging systems for imaging an eye are provided including a source having an associated source arm path and a reference arm having an associated reference arm path coupled to the source path, the reference arm path having an associated reference arm path length. A sample having an associated sample arm path coupled to the source arm and reference arm paths is provided. A reference arm path length adjustment module is coupled to the reference arm. The reference arm path length adjustment module is configured to automatically adjust the reference arm path length such that the reference arm path length is based on an eye length of the subject. Related methods and computer program products are also provided.
    Type: Application
    Filed: January 14, 2014
    Publication date: May 8, 2014
    Applicant: Bioptigen, Inc.
    Inventors: Eric L. Buckland, Robert H. Hart, Glenn A. Myers, Joseph A. Izatt