Patents by Inventor Hendrik SPAHR

Hendrik SPAHR 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: 11986242
    Abstract: The invention relates to a full-field OCT method for generating an imaging of an ocular fundus (31), in which short-coherent light (22) is emitted and split into an object beam path (25) and a reference beam path (24). The object beam path (25) is directed onto the ocular fundus (33). The reference beam path (24) and a portion of the object beam path (25) reflected by the ocular fundus (31) are directed onto an image sensor (32), such that an interference between the reference beam path (24) and the object beam path (25) occurs on the image sensor (32), wherein the reference beam path (24) impinges on the image sensor (32) at an angle deviating from the object beam path (25). Before impinging on the image sensor (32), the reference beam path (24) impinges on an optical correction element (27) in order to reduce a chromatic aberration within the reference beam path (24). Intensity information and phase information is determined from a capturing of the image sensor.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: May 21, 2024
    Assignee: Visotec GmbH
    Inventors: Peter Koch, Gereon Hüttmann, Helge Sudkamp, Hendrik Spahr, Dierck Hillmann, Michael Münst
  • Patent number: 11482044
    Abstract: The invention relates to a free-beam interferometric method for illuminating a sequence of sectional areas in the interior of the light-scattering object. The method makes it possible for the user to select a larger image field and/or a higher image resolution than previously possible with the occurrence of self-interference of the specimen light from a scattering specimen.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: October 25, 2022
    Assignee: Visotec GmbH
    Inventors: Helge Sudkamp, Hendrik Spahr, Dierck Hillmann, Peter Koch, Gereon Huttmann
  • Publication number: 20210038074
    Abstract: The invention relates to a full-field OCT method for generating an imaging of an ocular fundus (31), in which short-coherent light (22) is emitted and split into an object beam path (25) and a reference beam path (24). The object beam path (25) is directed onto the ocular fundus (33). The reference beam path (24) and a portion of the object beam path (25) reflected by the ocular fundus (31) are directed onto an image sensor (32), such that an interference between the reference beam path (24) and the object beam path (25) occurs on the image sensor (32), wherein the reference beam path (24) impinges on the image sensor (32) at an angle deviating from the object beam path (25). Before impinging on the image sensor (32), the reference beam path (24) impinges on an optical correction element (27) in order to reduce a chromatic aberration within the reference beam path (24). Intensity information and phase information is determined from a capturing of the image sensor.
    Type: Application
    Filed: January 23, 2019
    Publication date: February 11, 2021
    Inventors: Peter Koch, Gereon Hüttmann, Helge Sudkamp, Hendrik Spahr, Dierck Hillmann, Michael Münst
  • Publication number: 20210034863
    Abstract: The invention relates to a free-beam interferometric method for illuminating a sequence of sectional areas in the interior of the light-scattering object. The method makes it possible for the user to select a larger image field and/or a higher image resolution than previously possible with the occurrence of self-interference of the specimen light from a scattering specimen.
    Type: Application
    Filed: February 5, 2019
    Publication date: February 4, 2021
    Inventors: Helge Sudkamp, Hendrik Spahr, Dierck Hillmann, Peter Koch, Gereon Huttmann
  • Patent number: 10682052
    Abstract: The invention relates to an interferometric method, in which the light scattered by an object is imaged onto an electronic camera, wherein a sample light component is assigned to scattering sites on a sectional face in the interior of the object. This sample light component can be separated from the contributions of the other sample light components by processing of the camera image and leads to a sectional image. A particular advantage of the invention lies in the fact that multiple parallel sectional faces can be exposed sequentially at predetermined intervals from each other in the interior of the object. Such a sequence of sectional images can be used to calculate a solid model of the object.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: June 16, 2020
    Assignees: Medizinisches Laserzentrum Luebeck GmbH, Thorlabs GmbH
    Inventors: Peter Koch, Gesa Franke, Hendrik Spahr, Helge Sudkamp, Gereon Hüttmann, Dierck Hillmann, Reginald Birngruber
  • Publication number: 20180235461
    Abstract: The invention relates to an interferometric method, in which the light scattered by an object is imaged onto an electronic camera, wherein a sample light component is assigned to scattering sites on a sectional face in the interior of the object. This sample light component can he separated from the contributions of the other sample light components by processing of the camera image and leads to a sectional image. A particular advantage of the invention lies in the fact that multiple parallel sectional faces can be exposed sequentially at predetermined intervals from each other in the interior of the object. Such a sequence of sectional images can be used to calculate a solid model of the object. The invention is applicable in particular to the live retina and allows a three-dimensional retina scan within a few seconds with a cost-effective and, if necessary, hand-held device. Application options are in the fields of ophthalmology and in biometry.
    Type: Application
    Filed: August 9, 2016
    Publication date: August 23, 2018
    Applicants: Thorlabs GmbH, Medizinisches Laserzentrum Lübeck GmbH
    Inventors: Peter KOCH, Gesa FRANKE, Hendrik SPAHR, Helge SUDKAMP, Gereon HÜTTMANN, Dierck HILLMANN, Reginald BIRNGRUBER