Patents by Inventor Thomas Ach

Thomas Ach 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).

  • Publication number: 20240188826
    Abstract: A method for determining the autofluorescence of an ocular fundus of an eye includes detecting of an ocular fundus by means of optical coherence tomography and providing of a detected three-dimensional image of the ocular fundus including several retinal layers to an evaluation unit. Furthermore, the method includes dividing the three-dimensional image into a plurality of two-dimensional cross-sections per retinal layer and combining a plurality of cross-sections to form at least one reflectivity map and at least one layer thickness map per retinal layer, with the reflectivity map including the reflectivity of the retinal layer and the layer thickness map comprises the layer thickness of the retinal layer. Additionally, the method includes dividing the reflectivity maps and the layer thickness map each into several pixels, determining at least one reflectivity value and the layer thickness per pixel, and determining an autofluorescence value using the reflectivity value and the layer thickness per pixel.
    Type: Application
    Filed: December 7, 2023
    Publication date: June 13, 2024
    Inventors: Thomas ACH, Leon von der Emde
  • Patent number: 9517009
    Abstract: A method for non-invasive observations of a fundus using an ophthalmoscope is provided. The method includes illuminating a retinal region of an eye by projecting an illumination pattern of illumination light onto the retinal region, at least one of detecting a portion of fluorescent light emitted from the retinal region and detecting a portion of illumination light reflected from the retinal region, thereby capturing a series of images of the retinal region at a plurality of different relative positions of the retinal region with respect to the illumination pattern projected onto the retinal region, wherein between the capturing of at least two images of the series the relative position of the retinal region with respect to the illumination pattern projected onto the retinal region is shifted in a non-controlled manner, and processing the captured images to extract a sub-resolution image of the retinal region.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: December 13, 2016
    Assignees: Ruprecht-Karls-Universität Heidelberg, Friedrich-Schiller-Universität Jena
    Inventors: Christoph Cremer, Gerrit Best, Roman Amberger, Rainer Heintzmann, Stefan Dithmar, Thomas Ach
  • Publication number: 20150297076
    Abstract: A method for non-invasive observations of a fundus using an ophthalmoscope is provided. The method includes illuminating a retinal region of an eye by projecting an illumination pattern of illumination light onto the retinal region, at least one of detecting a portion of fluorescent light emitted from the retinal region and detecting a portion of illumination light reflected from the retinal region, thereby capturing a series of images of the retinal region at a plurality of different relative positions of the retinal region with respect to the illumination pattern projected onto the retinal region, wherein between the capturing of at least two images of the series the relative position of the retinal region with respect to the illumination pattern projected onto the retinal region is shifted in a non-controlled manner, and processing the captured images to extract a sub-resolution image of the retinal region.
    Type: Application
    Filed: September 26, 2013
    Publication date: October 22, 2015
    Inventors: Christoph Cremer, Gerrit Best, Roman Amberger, Rainer Heintzmann, Stefan Dithmar, Thomas Ach