Patents by Inventor Duncan McLean

Duncan McLean 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: 8639004
    Abstract: A method of performing a retinal examination is described wherein perimetry points are selected in three dimensional imaging data of the retinal tissue. The corresponding points in register with these perimetry points are mapped to an en-face image. These corresponding points are used as stimulus locations for a micro-perimetry examination.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: January 28, 2014
    Assignee: Optos plc
    Inventors: Duncan McLean, Justin Pedro, John Rogers
  • Publication number: 20120002856
    Abstract: A method of performing a retinal examination is described wherein perimetry points are selected in three dimensional imaging data of the retinal tissue. The corresponding points in register with these perimetry points are mapped to an en-face image. These corresponding points are used as stimulus locations for a micro-perimetry examination.
    Type: Application
    Filed: December 10, 2008
    Publication date: January 5, 2012
    Applicant: OPHTHALMIC TECHNOLOGIES INC.
    Inventors: Duncan McLean, Justin Pedro, John Rogers
  • Patent number: 7997729
    Abstract: A computer-implemented method of correcting for motion of a sample during OCT imaging obtains a series of cross-sectional volume scans through the sample at different positions on a first coordinate axis, obtains at least two cross-sectional alignment scans in planes intersecting said volume scans at an angle, and stores the alignment scans and the volume scans in memory. The alignment scans are matched to the volume scans at lines of intersection thereof to determine the relative displacement of the volume scans to the sample due to sample motion. The relative displacement is used to correct for motion of the sample between successive volume scans.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: August 16, 2011
    Assignee: OTI Ophthalmic Technologies Inc.
    Inventors: Duncan McLean, Justin Pedro, Clive Hayward
  • Patent number: 7872761
    Abstract: A method of building up a three dimensional OCT image of an object having a limited region sensitive to movement of a scanning beam performs an OCT scan in a scanning pattern that results in said limited region, typically the fovea of the eye, being scanned last.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: January 18, 2011
    Assignee: OTI Ophthalmic Techlogies Inc.
    Inventors: Justin Pedro, Clive Hayward, Duncan McLean
  • Patent number: 7690791
    Abstract: A visual acuity examination is performed on a patient by bringing a confocal imaging apparatus up to a patient's eye. Stimuli at various points in the patient's field of view are generated while the patient fixates on a point. The patient's responses to the stimuli are recorded with the movement of the eye with is tracked with the aid of the confocal imaging apparatus. The position of said stimuli on the retina is corrected to take into account any movement of the eye between stimuli.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: April 6, 2010
    Assignee: OTI Ophthalmic Technologies Inc.
    Inventors: Rishard Weitz, Duncan McLean, John Rogers, Justin Pedro
  • Publication number: 20090141240
    Abstract: A visual acuity examination is performed on a patient by bringing a confocal imaging apparatus up to a patient's eye. Stimuli at various points in the patient's field of view are generated while the patient fixates on a point. The patient's responses to the stimuli are recorded with the movement of the eye with is tracked with the aid of the confocal imaging apparatus. The position of said stimuli on the retina is corrected to take into account any movement of the eye between stimuli.
    Type: Application
    Filed: November 5, 2008
    Publication date: June 4, 2009
    Applicant: OTI OPHTHALMIC TECHNOLOGIES INC.
    Inventors: Rishard Weitz, Duncan McLean, John Rogers, Justin Pedro
  • Publication number: 20090103049
    Abstract: A computer-implemented method of correcting for motion of a sample during OCT imaging obtains a series of cross-sectional volume scans through the sample at different positions on a first coordinate axis, obtains at least two cross-sectional alignment scans in planes intersecting said volume scans at an angle, and stores the alignment scans and the volume scans in memory. The alignment scans are matched to the volume scans at lines of intersection thereof to determine the relative displacement of the volume scans to the sample due to sample motion. The relative displacement is used to correct for motion of the sample between successive volume scans.
    Type: Application
    Filed: October 8, 2008
    Publication date: April 23, 2009
    Applicant: OTI OPHTHALMIC TECHNOLOGIES INC.
    Inventors: Duncan McLean, Justin Pedro, Clive Hayward
  • Publication number: 20090079994
    Abstract: A method of building up a three dimensional OCT image of an object having a limited region sensitive to movement of a scanning beam performs an OCT scan in a scanning pattern that results in said limited region, typically the fovea of the eye, being scanned last.
    Type: Application
    Filed: September 12, 2008
    Publication date: March 26, 2009
    Applicant: OTI OPHTHALMIC TECHNOLOGIES INC.
    Inventors: Justin Pedro, Clive Hayward, Duncan McLean
  • Patent number: 4062457
    Abstract: This invention relates to a loading device suitable for lifting bales onto a tiltable loading platform of a vehicle. The device employs a framework such as a plurality of longitudinal and transverse members which are secured to a loading platform. The transverse members extend rearwardly of the platform so that when it is tilted, the rearmost end of the transverse members are proximate the ground. These ends are in turn pivotally connected to a plurality of forks. The obtuse angle between the longitudinal members and the forks is adjustably limited so that the forks lie in a substantially horizontal plane when the loading platform is tilted. Bales are loaded onto the platform after the forks have been placed under the bales and the tilted platform returned to its normal horizontal position.
    Type: Grant
    Filed: August 6, 1976
    Date of Patent: December 13, 1977
    Inventor: James Duncan McLean