Patents by Inventor Kai RITSCHEL

Kai RITSCHEL 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: 12366741
    Abstract: A control device for a microscope includes an actuator configured to shift a microscopic field of view relative to a sample, and an operating device configured to be operated by a user to control the actuator in accordance with a response characteristic determining a shift sensitivity. The field of view is shifted relative to the sample in response to a user operation of the operating device. The control device further includes a processor configured to determine a total visual magnification, and to control the response characteristic of the operating device based on the total visual magnification. The field of view is visualized by the microscope to the user based on the total visual magnification.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: July 22, 2025
    Assignee: LEICA MICROSYSTEMS CMS GMBH
    Inventors: Oliver Keul, Volker Schacht, Kai Ritschel
  • Patent number: 12339229
    Abstract: A method of analyzing a mixed fluorescence response of a plurality of fluorophores in a microscopic sample includes reconstructing individual fluorescence responses from a mixed fluorescence response using spectral un-mixing based on reference emission spectra for fluorophores to be reconstructed, and a procedure for determining and validating reference emission spectra including providing a plurality of image acquisition settings for a sequence of images of the sample equal to, or greater than, the plurality of fluorophores and including an illumination setting for each image, acquiring the sequence of images using the plurality of image acquisition settings and storing each image together with the corresponding illumination setting, determining candidate reference emission spectra for the fluorophores to be reconstructed from the sequence of images of the sample using one or more reference emission spectra determination algorithms, and conditionally using the candidate reference emission spectra as the refe
    Type: Grant
    Filed: November 28, 2022
    Date of Patent: June 24, 2025
    Assignee: LEICA MICROSYSTEMS CMS GMBH
    Inventors: Benjamin Deissler, Christian Schumann, Kai Ritschel, Mate Beljan, Wernher Fouquet, Gheorghe Cojoc
  • Patent number: 12313830
    Abstract: A method for automatically ascertaining illumination brightnesses to be adjusted of at least two light sources for exciting at least one respective fluorophore in a sample to be imaged in a fluorescence microscope includes separately controlling, in terms of illumination brightness, each of the at least two light sources, detecting an image intensity of a microscopically imaged sample with at least two detectors, and automatically ascertaining the illumination brightnesses to be adjusted of the at least two light sources in such a way that a predefined setpoint of a signal-to-noise ratio is reached for each fluorophore. In order to ascertain the illumination brightnesses of the at least two light sources, cross-talk of a detector for different emission spectra of the fluorophores and/or cross-excitation of a fluorophore for different illumination spectra of the light sources are/is taken into account.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: May 27, 2025
    Assignee: LEICA MICROSYSTEMS CMS GMBH
    Inventors: Christian Schumann, Benjamin Deissler, Kai Ritschel
  • Patent number: 12277719
    Abstract: A multispectral microscope system includes a first detector element for capturing a first image of a sample in a first spectral channel, and at least a second detector element for capturing a second image of the sample in a second spectral channel. The first detector element includes a first detector array. The second detector element includes a second detector array different from the first detector array. The microscope system further includes a processor for determining a spatial correlation between the first and second images based on a spectral crosstalk between the first and second spectral channels and registering the first and second images based on the spatial correlation.
    Type: Grant
    Filed: February 21, 2022
    Date of Patent: April 15, 2025
    Assignee: LEICA MICROSYSTEMS CMS GMBH
    Inventors: Christian Schumann, Kai Ritschel, Mate Beljan
  • Patent number: 12253663
    Abstract: A control device for a microscope includes an operating device, an actuator and a processor. The operating device is configured to be operated by a user to vary focusing and/or positioning of an optical imaging system of the microscope relative to a sample. The actuator is configured to adjust an aperture of a detection pinhole which is included in the microscope so as to eliminate out-of-focus light from detection light which is directed by the optical imaging system onto a detector of the microscope. The processor is configured to detect a predetermined operating condition in response to a user operation of the operating device and to control the actuator to vary the aperture of the detection pinhole upon detection of the predetermined operating condition.
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: March 18, 2025
    Assignee: LEICA MICROSYSTEMS CMS GMBH
    Inventors: Oliver Keul, Volker Schacht, Kai Ritschel
  • Publication number: 20240168274
    Abstract: Embodiments of the present invention relate to an optical imaging system, and to methods, systems, and computer programs for such an optical imaging system. The methods comprise obtaining first image data of an imaging device of the imaging system, the first image data comprising a representation of a pattern. The methods comprise obtaining second image data of the pattern from the imaging device after the pattern has been displaced by a stage of the optical imaging system by a distance in a dimension defined relative to the stage. The methods comprise determining an offset between the patterns of the first and second image data in two dimensions. The methods comprise calculating a conversion parameter based on the offset and the distance. A first method comprises controlling a drive unit configured to displace the stage based on the conversion parameter.
    Type: Application
    Filed: November 21, 2023
    Publication date: May 23, 2024
    Inventors: Kai RITSCHEL, Mate BELJAN
  • Publication number: 20240095959
    Abstract: A stage insert is provided. The stage insert comprises a first region for accommodating a sample holder. Further, the stage insert comprises a second region comprising a first calibration target for calibrating a first parameter of the microscope system. The stage insert also comprises a third region comprising a second calibration target for calibrating a second parameter of the microscope system.
    Type: Application
    Filed: September 19, 2023
    Publication date: March 21, 2024
    Inventors: Kai RITSCHEL, Mate BELJAN
  • Publication number: 20240053596
    Abstract: A control device for a microscope includes an actuator configured to shift a microscopic field of view relative to a sample, and an operating device configured to be operated by a user to control the actuator in accordance with a response characteristic determining a shift sensitivity. The field of view is shifted relative to the sample in response to a user operation of the operating device. The control device further includes a processor configured to determine a total visual magnification, and to control the response characteristic of the operating device based on the total visual magnification. The field of view is visualized by the microscope to the user based on the total visual magnification.
    Type: Application
    Filed: November 30, 2021
    Publication date: February 15, 2024
    Inventors: Oliver KEUL, Volker SCHACHT, Kai RITSCHEL
  • Patent number: 11841494
    Abstract: An optical imaging device for a microscope comprises a first optical system configured to form a first optical image corresponding to a first region of a sample in accordance with a first imaging mode, a second optical system configured to form a second optical image corresponding to a second region of said sample, wherein said first and second regions spatially coincide in a target region of said sample and said first and second imaging modes are different from each other, a memory storing first distortion correction data suitable for correcting a first optical distortion caused by said first optical system in said first optical image, second distortion correction data suitable for correcting a second optical distortion caused by said second optical system in said second optical image, and transformation data suitable for correcting positional misalignment between said first and second optical images, and a processor which is configured to process first image data representing said first optical image based
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: December 12, 2023
    Assignee: Leica Microsystems CMS GmbH
    Inventors: Kai Ritschel, Marco Bingel, Patric Pelzer
  • Publication number: 20230324662
    Abstract: A method for automatically ascertaining illumination brightnesses to be adjusted of at least two light sources for exciting at least one respective fluorophore in a sample to be imaged in a fluorescence microscope includes separately controlling, in terms of illumination brightness, each of the at least two light sources, detecting an image intensity of a microscopically imaged sample with at least two detectors, and automatically ascertaining the illumination brightnesses to be adjusted of the at least two light sources in such a way that a predefined setpoint of a signal-to-noise ratio is reached for each fluorophore. In order to ascertain the illumination brightnesses of the at least two light sources, cross-talk of a detector for different emission spectra of the fluorophores and/or cross-excitation of a fluorophore for different illumination spectra of the light sources are/is taken into account.
    Type: Application
    Filed: August 5, 2020
    Publication date: October 12, 2023
    Inventors: Christian SCHUMANN, Benjamin DEISSLER, Kai RITSCHEL
  • Publication number: 20230196513
    Abstract: A fluorescence microscope system including an optical detection system configured to capture a raw image of a sample, the raw image including a plurality of pixels, each pixel having a brightness value and a processor, configured to determine one or more invalid pixels in the raw image, assign a predetermined value to each invalid pixel, determine a range of brightness values including the brightness values of a majority of the plurality of pixels excluding the one or more invalid pixels, and generate a processed image of the sample based on the determined range of brightness values. (FIG.
    Type: Application
    Filed: December 13, 2022
    Publication date: June 22, 2023
    Inventors: Kai RITSCHEL, Oliver SCHLICKER
  • Publication number: 20230175963
    Abstract: A method of analyzing a mixed fluorescence response of a plurality of fluorophores in a microscopic sample includes reconstructing individual fluorescence responses from a mixed fluorescence response using spectral un-mixing based on reference emission spectra for fluorophores to be reconstructed, and a procedure for determining and validating reference emission spectra including providing a plurality of image acquisition settings for a sequence of images of the sample equal to, or greater than, the plurality of fluorophores and including an illumination setting for each image, acquiring the sequence of images using the plurality of image acquisition settings and storing each image together with the corresponding illumination setting, determining candidate reference emission spectra for the fluorophores to be reconstructed from the sequence of images of the sample using one or more reference emission spectra determination algorithms, and conditionally using the candidate reference emission spectra as the refe
    Type: Application
    Filed: November 28, 2022
    Publication date: June 8, 2023
    Inventors: Benjamin DEISSLER, Christian SCHUMANN, Kai RITSCHEL, Mate BELJAN, Wernher FOUQUET, Gheorghe COJOC
  • Publication number: 20230161143
    Abstract: A fluorescence microscope system for imaging a sample having at least two different fluorophores includes an illumination system configured to emit illumination light for exciting the fluorophores; an optical detection system configured to generate images of the sample based on fluorescence light emitted by the excited fluorophores; and a control unit configured to determine whether to image the sample in a concurrent imaging mode or in a sequential imaging mode, based on at least one characteristic of each of the fluorophores and based on at least one parameter of the optical detection system and/or the illumination system. In the concurrent imaging mode, the fluorophores are imaged simultaneously, and in the sequential imaging mode, the fluorophores are divided into a first group and at least one second group, and fluorophores of the first group and the at least one second group are imaged subsequently.
    Type: Application
    Filed: November 22, 2022
    Publication date: May 25, 2023
    Inventors: Kai RITSCHEL, Benjamin DEISSLER, Dennis JAEHNERT
  • Patent number: 11543644
    Abstract: A microscope includes a digital imaging device. The digital imaging device comprises a processor which is configured to: obtain a number of digital grayscale images of an object at a number of different spectral sensitivities, each of the digital grayscale images including grayscale information based on a different one of the different spectral sensitivities, obtain a number of weighting factors for each of the digital grayscale images, the weighting factors being allocated to a number of color channels defining a predetermined color space, and synthesize a digital color image of the object from the digital grayscale images in the color space by distributing the grayscale information of each grayscale image over the color channels in accordance with the weighting factors.
    Type: Grant
    Filed: April 6, 2021
    Date of Patent: January 3, 2023
    Assignee: LEICA MICROSYSTEMS CMS GMBH
    Inventors: Jose Miguel Serra Lleti, Kai Ritschel
  • Publication number: 20220373464
    Abstract: A control system for automatedly determining an illumination intensity of at least one light source of a fluorescence microscope is provided. The control system is configured to automatedly determine, after a change in a light path, a control value for the illumination intensity of the at least one light source in order to achieve a desired value of an inspection parameter characterizing sample inspection. The light path comprises at least one of: an illumination path from the at least one light source to the sample and an imaging path from the sample to at least one detector. Determining the control value is based on: (i) a value of the illumination intensity that was set before the change in the light path, (ii) a value of the inspection parameter used before the change in the light path, and (iii) a physical model of the light path.
    Type: Application
    Filed: May 2, 2022
    Publication date: November 24, 2022
    Inventors: Kai RITSCHEL, Christian SCHUMANN
  • Publication number: 20220284604
    Abstract: A multispectral microscope system includes: a first detector element for capturing a first image of a sample in a first spectral channel; at least a second detector element for capturing a second image of the sample in a second spectral channel; and a processor for determining a spatial correlation between the first and second images based on a spectral crosstalk between the first and second spectral channels and registering the first and second images based on the spatial correlation.
    Type: Application
    Filed: February 21, 2022
    Publication date: September 8, 2022
    Inventors: Christian SCHUMANN, Kai RITSCHEL, Mate BELJAN
  • Publication number: 20220113531
    Abstract: A control device for a microscope includes an operating device, an actuator and a processor. The operating device is configured to be operated by a user to vary focusing and/or positioning of an optical imaging system of the microscope relative to a sample. The actuator is configured to adjust an aperture of a detection pinhole which is included in the microscope so as to eliminate out-of-focus light from detection light which is directed by the optical imaging system onto a detector of the microscope. The processor is configured to detect a predetermined operating condition in response to a user operation of the operating device and to control the actuator to vary the aperture of the detection pinhole upon detection of the predetermined operating condition.
    Type: Application
    Filed: October 12, 2021
    Publication date: April 14, 2022
    Inventors: Oliver KEUL, Volker SCHACHT, Kai RITSCHEL
  • Publication number: 20210325657
    Abstract: A microscope includes a digital imaging device. The digital imaging device comprises a processor which is configured to: obtain a number of digital grayscale images of an object at a number of different spectral sensitivities, each of the digital grayscale images including grayscale information based on a different one of the different spectral sensitivities, obtain a number of weighting factors for each of the digital grayscale images, the weighting factors being allocated to a number of color channels defining a predetermined color space, and synthesize a digital color image of the object from the digital grayscale images in the color space by distributing the grayscale information of each grayscale image over the color channels in accordance with the weighting factors.
    Type: Application
    Filed: April 6, 2021
    Publication date: October 21, 2021
    Inventors: Jose Miguel Serra Lleti, Kai Ritschel
  • Publication number: 20210149175
    Abstract: An optical imaging device for a microscope comprises a first optical system configured to form a first optical image corresponding to a first region of a sample in accordance with a first imaging mode, a second optical system configured to form a second optical image corresponding to a second region of said sample, wherein said first and second regions spatially coincide in a target region of said sample and said first and second imaging modes are different from each other, a memory storing first distortion correction data suitable for correcting a first optical distortion caused by said first optical system in said first optical image, second distortion correction data suitable for correcting a second optical distortion caused by said second optical system in said second optical image, and transformation data suitable for correcting positional misalignment between said first and second optical images, and a processor which is configured to process first image data representing said first optical image based
    Type: Application
    Filed: October 28, 2020
    Publication date: May 20, 2021
    Inventors: Kai RITSCHEL, Marco BINGEL, Patric PELZER