Patents by Inventor Eric L. Buckland

Eric L. Buckland 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: 11385447
    Abstract: Surgical microscopes are provided including at least one ocular, an objective lens; a collimated space between the at least one ocular and the objective lens; an illumination system optically coupled into the collimated space of the surgical microscope, wherein an illumination from the illumination system is directed along a path at least partially contained within the collimated space of the surgical microscope and through the objective lens; and one of a field diaphragm and obscuration mask positioned within the illumination system, and outside of a field of view of the at least one ocular, wherein the one of the field diaphragm and the obscuration mask blocks, attenuates or diverts rays from the illumination system that reflect from a surface of the objective lens such that the reflected rays are not visible through the at least one ocular.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: July 12, 2022
    Assignee: Bioptigen, Inc.
    Inventors: Christopher Saxer, Al-Hafeez Z. Dhalla, Robert H. Hart, Eric L. Buckland
  • Publication number: 20220215584
    Abstract: A model eye for calibrating a retinal imaging system is provided including a backplane having a negative radius of curvature R centered on the optical axis and a clear aperture diameter D2; a distance h along the optical axis from the nodal point to the backplane; an unobstructed field of view 2?; a closed fluid fillable housing; a mechanical system for mounting, aligning, and preserving spacings of the elements of the model eye; and a pattern applied to the backplane, the pattern having a rotational symmetry and a radial repeating unit, extending substantially across the clear aperture, that spatially modulates intensity of light reflected from, or transmitted through, a surface of the backplane. D2/D1 is greater than 2, an absolute value of R/h is greater than 0.5, and 2? is greater than zero (0) degrees.
    Type: Application
    Filed: January 4, 2022
    Publication date: July 7, 2022
    Inventors: Micaela R. Mendlow, Eric L. Buckland
  • Publication number: 20220148710
    Abstract: Integrated systems for collecting, storing, and distribution of images acquired of subjects in a research or clinical environment are provided. The system includes an image and data repository including a plurality of images originating from one or more image-generating devices, data associated with the images, and data associated with imaged subjects; and a workflow management module in direct communication with the image and data repository and with the one or more image-generating devices and/or storage devices that store the images of the imaged subjects, the workflow management module being configured to transport the images directly from the one or more image-generating devices and/or storage devices to the image and data repository and to manage the collation and distribution of images, data associated with the raw images and the data associated with the imaged subjects in the image and data repository.
    Type: Application
    Filed: April 3, 2020
    Publication date: May 12, 2022
    Inventors: Eric L. Buckland, Joseph Carroll, Robert C. Williams, Andrew J. Witchger, JR.
  • Publication number: 20220125302
    Abstract: Methods are provided for performing a surgical procedure using optical coherence tomography (OCT) including extracting lenticular material from within a capsular bag of the eye of a patient; placing a replacement lens within the capsular bag after extraction of the lenticular material from the capsular bag; acquiring a plurality of OCT images that visualize the placement of the replacement lens within the capsular bag; and determining from the plurality of OCT images a degree of contact of the posterior surface of the replacement lens with the posterior portion of the capsular bag.
    Type: Application
    Filed: January 5, 2022
    Publication date: April 28, 2022
    Inventors: Eric L. Buckland, Al-Hafeez Dhalla, Robert H. Hart
  • Publication number: 20220125301
    Abstract: Systems for determining an apex of curvature In an image, obtained from, a sample are provided. The systems include—an imaging system configured to obtain a plurality of scans of a sample using a radial pattern; and a processor associated with the imaging system. The processor is configured to segment and curve fit each of the plurality of scans to a surface of the sample; determine an apex. for each curve associated with each of the plurality of scans; determine a true apex, among all determined apexes using a derivative of least value; calculate an XY offset based on the determined true apex; map the true apex to an origin where X and Y are equal to zero; and adjust the coordinates associated with remaining apexes not determined to be the true apex based on the calculated offset.
    Type: Application
    Filed: March 19, 2020
    Publication date: April 28, 2022
    Inventors: Robert H. Hart, Dorothy M. Branco, Eric L. Buckland, Micaela R. Mendlow
  • Publication number: 20210327565
    Abstract: An integrated system for processing and using images acquired of subjects in a research or clinical environment is provided. The integrated system includes an image and data bank, a workflow management module, a cloud storage module and a pre-processing module. The pre-processing engine is positioned between the workflow management module and the cloud storage module and is configured to receive raw images, data associated with the raw images and the data associated with the imaged subjects from the workflow management module and process this data and provide the processed data to be pushed into the cloud storage module. The pre-processing engine also anonymizes the data to provide de-identified images and data to the cloud storage module and creates a key that relates the raw images, data associated with the raw images and the data associated with the imaged subjects to the de-identified, processed images and data. The key remains separate and un-connected from the de-identified, processed images and data.
    Type: Application
    Filed: September 4, 2019
    Publication date: October 21, 2021
    Inventor: Eric L. BUCKLAND
  • Publication number: 20210209758
    Abstract: A method for segmenting images is provided including tessellating an image obtained from one of an image database and an imaging system into a plurality of sectors; classifying each of the plurality of sectors by applying one or more pre-defined labels to each of the plurality of sectors, wherein the pre-defined labels indicate at least one of an image quality metric (IQM) and a metric of structure; assigning each of the plurality of classified sectors an Image Quality Classification (IQC); identifying anchor sectors among the plurality of classified sectors, applying filtering and edge detection to identify target boundaries; applying contouring across contiguous sectors and using the assigned IQC as a guide to complete segmentation of an edge between any two identified anchor sectors; and smoothing across segmented regions to increase parametric second-order continuity.
    Type: Application
    Filed: January 6, 2021
    Publication date: July 8, 2021
    Inventors: Eric L. Buckland, Micaela R. Mendlow, Robert C. Williams
  • Publication number: 20210193297
    Abstract: Integrated systems for collecting, storing, and distribution of images acquired of subjects in a research or clinical environment are provided. The system includes an image and data repository including a plurality of images originating from one or more image-generating devices, data associated with the images, and data associated with imaged subjects; and a workflow management module in direct communication with the image and data repository and with the one or more image-generating devices and/or storage devices that store the images of the imaged subjects, the workflow management module being configured to transport the images directly from the one or more image-generating devices and/or storage devices to the image and data repository and to manage the collation and distribution of images, data associated with the raw images and the data associated with the imaged subjects in the image and data repository.
    Type: Application
    Filed: April 3, 2020
    Publication date: June 24, 2021
    Inventors: Eric L. Buckland, Joseph Carroll, Robert C. Williams, Andrew J. Witchger, JR.
  • Publication number: 20200054206
    Abstract: Methods are provided for performing a surgical procedure using optical coherence tomography (OCT) including extracting lenticular material from within a capsular bag of the eye of a patient; placing a replacement lens within the capsular bag after extraction of the lenticular material from the capsular bag; acquiring a plurality of OCT images that visualize the placement of the replacement lens within the capsular bag; and determining from the plurality of OCT images a degree of contact of the posterior surface of the replacement lens with the posterior portion of the capsular bag.
    Type: Application
    Filed: October 28, 2019
    Publication date: February 20, 2020
    Inventors: Eric L. Buckland, Al-Hafeez Dhalla, Robert H. Hart
  • Publication number: 20190339499
    Abstract: Surgical microscopes are provided including at least one ocular, an objective lens; a collimated space between the at least one ocular and the objective lens; an illumination system optically coupled into the collimated space of the surgical microscope, wherein an illumination from the illumination system is directed along a path at least partially contained within the collimated space of the surgical microscope and through the objective lens; and one of a field diaphragm and obscuration mask positioned within the illumination system, and outside of a field of view of the at least one ocular, wherein the one of the field diaphragm and the obscuration mask blocks, attenuates or diverts rays from the illumination system that reflect from a surface of the objective lens such that the reflected rays are not visible through the at least one ocular.
    Type: Application
    Filed: July 15, 2019
    Publication date: November 7, 2019
    Inventors: Christopher Saxer, AI-Hafeez Z. Dhalla, Robert H. Hart, Eric L. Buckland
  • Patent number: 10456030
    Abstract: Methods are provided including obtaining at least one image of a surgical region of a subject oriented for the surgical procedure using an OCT imaging system. An initial structural view of the surgical region to be used during the surgical procedure is constructed based on the obtained at least one OCT image. Parameters are computed as an end point for assessing an outcome of the surgical procedure using data derived from the OCT image. The surgical procedure is periodically assessed and clinical outcomes are monitored using changes to the OCT-derived initial structural view of the surgical region or changes to the computed at least one clinical parameter. It is determined if the surgical plan needs modification and it is modified during the surgical procedure. Operations repeat until it is determined that no more modifications are needed.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: October 29, 2019
    Assignee: Bioptigen, Inc.
    Inventors: Eric L. Buckland, Al-Hafeez Dhalla, Robert H. Hart
  • Patent number: 10409046
    Abstract: Field diaphragms for use in surgical microscopes are provided. The field diaphragms are positioned along an optical axis of a microscope illumination system. The field diaphragms include a frame portion configured to be received by the surgical microscope; and a non-circularly symmetric mask portion integrated with the frame portion. The mask portion is aligned such that marginal rays from an edge of the field diaphragm along a meridian of minimum diameter that reflect from a surface of an objective lens of the microscope reflect outside of an acceptance angle for relay through any ocular channel of the microscope.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: September 10, 2019
    Assignee: Bioptigen, Inc.
    Inventors: Christopher Saxer, Al-Hafeez Z. Dhalla, Robert H. Hart, Eric L. Buckland
  • Patent number: 10362936
    Abstract: Methods are provided including obtaining at least one image of a surgical region of a subject oriented for the surgical procedure using an OCT imaging system. An initial structural view of the surgical region to be used during the surgical procedure is constructed based on the obtained at least one OCT image. Parameters are computed as an end point for assessing an outcome of the surgical procedure using data derived from the OCT image. The surgical procedure is periodically assessed and clinical outcomes are monitored using changes to the OCT-derived initial structural view of the surgical region or changes to the computed at least one clinical parameter. It is determined if the surgical plan needs modification and it is modified during the surgical procedure. Operations repeat until it is determined that no more modifications are needed.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: July 30, 2019
    Assignee: Bioptigen, Inc.
    Inventors: Eric L. Buckland, Al-Hafeez Dhalla, Robert H. Hart
  • Publication number: 20190200854
    Abstract: A model eye for use with an imaging system is provided. The model eye includes a shape that mimics a shape of a real eye of a subject and focal parameters of the real eye of the subject. The model eye is positioned in the imaging system in place of the real eye to assess and/or calibrate the imaging system. Related methods, systems and devices are also provided herein.
    Type: Application
    Filed: January 3, 2018
    Publication date: July 4, 2019
    Inventors: Andrew Murnan, Nestor O. Farmiga, Christopher Saxer, Al-Hafeez Z. Dhalla, Eric L. Buckland, Robert H. Hart
  • Patent number: 10307056
    Abstract: Methods of obtaining a measure of blood flow using a Fourier domain optical coherence tomography (FDOCT) system is provided. The method includes obtaining a first optical coherence tomography (OCT) survey scan of a retina of a subject using an OCT scan beam and obtaining a second OCT scan of the retina. The second OCT scan is within an area defined by the obtained first OCT scan and includes a region of retinal blood vessels emerging from and returning to an Optic Nerve Head (ONH) of the retina. An optical phase change is determined from the obtained second OCT scan, the optical phase change being associated with blood flow in a retinal blood vessel in the region of the second OCT scan. An angle of the retinal blood vessel associated with the optical phase change is determined, the angle being measured relative to a direction of transmission of the OCT scan beam.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: June 4, 2019
    Assignee: Bioptigen, Inc.
    Inventors: Eric L. Buckland, Bradley A. Bower, Ryan Gessner
  • Patent number: 10271725
    Abstract: Optical coherence tomography (OCT) imaging systems are provided including a source of broadband optical radiation coupled to a sample arm of the OCT imaging system; a beam shaping optical assembly in the sample arm, the beam shaping optical assembly being configured to receive optical radiation from the source as a beam of optical radiation and to shape the spatial profile of the beam of optical radiation; a scan mirror assembly coupled to the beam shaping optical assembly; and objective lens assembly coupled to the beam shaping optical assembly. The beam shaping optical assembly includes a lens assembly configured to change a NA of the OCT system without changing a focus; to change a focus of the OCT system without changing a NA of the system; or to change both the NA and the focus of the OCT system responsive to a control input.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: April 30, 2019
    Assignee: Bioptigen, Inc.
    Inventors: Eric L. Buckland, Andrew Murnan, Nestor O. Farmiga, Robert H. Hart, Christopher Saxer
  • 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: 10060720
    Abstract: Frequency domain optical coherence imaging systems have an optical source, an optical detector and an optical transmission path between the optical source and the optical detector. The optical transmission path between the optical source and the optical detector reduces an effective linewidth of the imaging system. The optical source may be a broadband source and the optical transmission path may include a periodic optical filter.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: August 28, 2018
    Assignee: Bioptigen, Inc.
    Inventors: Joseph A. Izatt, Eric L. Buckland, William J. Brown
  • Patent number: 10048057
    Abstract: An optical coherence tomography (OCT) system including a source of broadband optical radiation and a beamsplitter coupled to the source is provided. The beamsplitter divides the source radiation into a reference path and a sample path. The reference path includes an optical switch to switch the reference path between a first path having a first reference reflection at a first reference optical path length and a second path having a second reference reflection at a second reference optical path length. The system further includes a beam combiner that mixes source radiation reflected from a subject in the sample path with source radiation returned from the first reference reflection and the second reference reflection. A detection system detects a first wavelength dependent interferogram during the first time interval and a second wavelength dependent interferogram during the second time interval. A processor preconditions the first and second wavelength dependent interferograms.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: August 14, 2018
    Assignee: Bioptigen, Inc.
    Inventors: Eric L. Buckland, Al-Hafeez Z. Dhalla, Nestor O. Farmiga, Mehran Ghofrani, Robert H. Hart, Andrew Murnan, Christopher Saxer
  • Patent number: 9949634
    Abstract: Optical coherence tomography (OCT) imaging systems are provided including a source of broadband optical radiation coupled to a sample arm of the OCT imaging system; a beam shaping optical assembly in the sample arm, the beam shaping optical assembly being configured to receive optical radiation from the source as a beam of optical radiation and to shape the spatial profile of the beam of optical radiation; a scan mirror assembly coupled to the beam shaping optical assembly; and objective lens assembly coupled to the beam shaping optical assembly. The beam shaping optical assembly includes a lens assembly configured to change a NA of the OCT system without changing a focus; to change a focus of the OCT system without changing a NA of the system; or to change both the NA and the focus of the OCT system responsive to a control input.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: April 24, 2018
    Assignee: Bioptigen, Inc.
    Inventors: Eric L. Buckland, Andrew Murnan, Nestor O. Farmiga, Robert H. Hart, Christopher Saxer