Patents by Inventor Christian PLATT

Christian PLATT 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: 12194535
    Abstract: In a method for additive manufacturing of a workpiece, a data set defines the workpiece in multiple layers. A first energy beam is moved relative to a manufacturing platform along first trajectories to produce, in temporally successive steps, a stack of workpiece layers. Individual properties of the stack are determined using a measurement arrangement having an exciter that excites the stack with a second energy beam, and having a detector that detects properties of the stack resulting from an excitation along a defined detection path in a spatially resolved manner. At least one of the second energy beam and the detection path is moved relative to the manufacturing platform along further trajectories using a further scanning unit. The first scanning unit and the further scanning unit establish completely separate beam paths for the first energy beam and the at least one of the second energy beam and the detection path.
    Type: Grant
    Filed: November 15, 2021
    Date of Patent: January 14, 2025
    Assignee: Carl Zeiss Industrielle Messtechnik GmbH
    Inventors: Frank Widulle, Christian Platt, Thomas Milde, Bernhard Wiedemann
  • Publication number: 20230330941
    Abstract: A method for additively manufacturing a workpiece includes obtaining a dataset that defines the workpiece in a layer stack. The method includes producing the layers in sequential production steps using a layer forming tool. At a defined point in time, the stack has an uppermost layer and zero or more layers underneath. The method includes thermally exciting the layer stack with a first pulsed thermal excitation. The first pulsed thermal excitation includes a spatially structured heating pattern that heats the uppermost workpiece layer in parallel at mutually spatially distant excitation points. The method includes recording images of the uppermost workpiece layer after the first pulsed thermal excitation and inspecting the layer stack using the images in order to obtain an inspection result. The inspection result is based on a time-based individual deformation profile or a time-based individual temperature profile determined from the images.
    Type: Application
    Filed: June 23, 2023
    Publication date: October 19, 2023
    Inventors: Frank WIDULLE, Johann IRNSTETTER, Christian PLATT
  • Publication number: 20230316573
    Abstract: The invention relates to a method for operating a medical microscope, in particular in the field, with an interchange and/or a misalignment of at least one component of the medical microscope being followed by an identification of the interchanged and/or misaligned at least one component, with required adjustment measures and/or calibration measures being determined in automated fashion using the identified at least one interchanged and/or misaligned component as a starting point, and with the determined required adjustment measures and/or calibration measures being carried out. Furthermore, the invention relates to a medical microscope arrangement.
    Type: Application
    Filed: January 24, 2023
    Publication date: October 5, 2023
    Inventors: Felicia WALZ, Dominik SCHERER, Stefan SAUR, Marco WOERNER, Lars STOPPE, Christian PLATT
  • Publication number: 20230256513
    Abstract: A method for additive manufacturing includes obtaining a dataset that defines the workpiece in multiple workpiece layers arranged one on top of the other. A layer stack of multiple workpiece layers is produced based on the dataset. The layer stack has a respective topmost workpiece layer at a defined instant of time. The layer stack is thermally excited at the defined instant of time and a sequence of images of the respective topmost workpiece layer is recorded. The layer stack is inspected using the sequence of images. The inspection involves evaluation of an individual temporal deformation profile of the respective topmost workpiece layer in response to the thermal excitation. The individual temporal deformation profile has multiple characteristic features including an individual deformation increase, an individual deformation maximum, and an individual deformation decrease. The inspection result is determined by evaluating at least one of the characteristic features.
    Type: Application
    Filed: April 20, 2023
    Publication date: August 17, 2023
    Inventors: Michael TOTZECK, Frank WIDULLE, Christian PLATT, Beat Marco MOUT, Diana SPENGLER
  • Publication number: 20230236405
    Abstract: The invention relates to a method for operating a stereoscopic medical microscope, wherein deteriorated and/or invalid calibration data are recognized, wherein for this purpose mutually corresponding image representations of at least one feature arranged in capture regions of cameras of a stereo camera system of the medical microscope are captured by means of the cameras, the captured image representations are evaluated by means of feature-based image processing, wherein the at least one feature is recognized in this case in the captured image representations and a misalignment and/or a decalibration of the cameras of the stereo camera system are/is recognized on the basis of the at least one feature recognized; and wherein at least one measure is carried out depending on an evaluation result. Furthermore, the invention relates to a medical microscope.
    Type: Application
    Filed: January 24, 2023
    Publication date: July 27, 2023
    Inventors: Felicia WALZ, Dominik SCHERER, Stefan SAUR, Marco WOERNER, Lars STOPPE, Christian PLATT
  • Publication number: 20230070819
    Abstract: A device for additive manufacturing of a workpiece includes a production platform supporting a defined material layer of particulate material, a structuring tool, an inspection sensor, a control unit, and a position encoder. The inspection sensor has a line scan camera and a line light source and is movable along a movement direction relative to the production platform. The position encoder generates a position signal representing a respective instantaneous position of the inspection sensor relative to the production platform. The control unit generates a spatially resolved image of the defined layer using the line light source, the line scan camera, and the position signal. The control unit controls the structuring tool in order to produce a defined workpiece layer by selectively solidifying particulate material of the defined material layer based on the image of the defined material layer and/or an image of a previously produced workpiece layer.
    Type: Application
    Filed: November 11, 2022
    Publication date: March 9, 2023
    Inventors: Thomas MILDE, Frank WIDULLE, Michael TOTZECK, Christian PLATT, Johann IRNSTETTER
  • Publication number: 20220072620
    Abstract: In a method for additive manufacturing of a workpiece, a data set defines the workpiece in multiple layers. A first energy beam is moved relative to a manufacturing platform along first trajectories to produce, in temporally successive steps, a stack of workpiece layers. Individual properties of the stack are determined using a measurement arrangement having an exciter that excites the stack with a second energy beam, and having a detector that detects properties of the stack resulting from an excitation along a defined detection path in a spatially resolved manner. At least one of the second energy beam and the detection path is moved relative to the manufacturing platform along further trajectories using a further scanning unit. The first scanning unit and the further scanning unit establish completely separate beam paths for the first energy beam and the at least one of the second energy beam and the detection path.
    Type: Application
    Filed: November 15, 2021
    Publication date: March 10, 2022
    Inventors: Frank WIDULLE, Christian PLATT, Thomas MILDE, Bernhard WIEDEMANN