Patents by Inventor Kai Hertel

Kai Hertel 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: 10882135
    Abstract: An apparatus for additively manufacturing three-dimensional objects includes a scanning unit configured to scan an energy beam over a build plane, and a focusing unit that includes an optical lens or lens system. The focusing unit may be configured to control a focal position of the energy beam based on calibration information. The focal position may be controlled by moving the focusing unit in the z-direction relative to the build plane without changing the focal length of the energy beam. Methods of calibrating such an apparatus may include moving a focusing unit in the z-direction relative to a build plane based on calibration information and scanning an energy beam over at least a portion of the build plane using a scanning unit, with the focusing unit being configured to control a focal position of the energy beam without changing the focal length of the energy beam.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: January 5, 2021
    Assignee: Concept Laser GmbH
    Inventors: Maximilian Bauer, Kai Hertel
  • Publication number: 20200269494
    Abstract: Methods of controlling and/or operating an apparatus for additively manufacturing three-dimensional objects include simulating control and/or operation of at least one functionality of the apparatus using a provisional software product to check at least one pre-defined certification criterion upon which the at least one functionality of the apparatus are preconditioned, generating a machine-readable software product upon the provisional software product having satisfied the at least one pre-defined certification criterion, and controlling and/or operating the at least one functionality of the apparatus using the machine-readable software product. The software product may be generated by modifying the provisional software product based on a certification key provided to the provisional software product.
    Type: Application
    Filed: May 11, 2020
    Publication date: August 27, 2020
    Inventors: Philipp Schumann, Kai Hertel, Timo Voigt
  • Publication number: 20200238623
    Abstract: According to some embodiments, system and methods are provided comprising receiving input including: coordinates of one or more regions to be fabricated on a build plate, a laser boundary for each of two or more lasers, wherein the lasers fabricate the one or more regions, and a processing time for each region; deriving a prioritized sequence of the one or more regions to be fabricated; determining, based on the received coordinates and received laser boundary, one or more potential lasers assignments for each region; determining, based on the determined potential laser assignments, the prioritized sequence of the one or more regions, and the processing time for each region, a laser-to-region sequence for the one or more lasers to fabricate the one or more regions; assigning the determined laser-to-region sequence to the one or more lasers for fabrication of the one or more regions. Numerous other aspects are provided.
    Type: Application
    Filed: January 29, 2019
    Publication date: July 30, 2020
    Inventors: Nitish UMANG, Kai HERTEL, Christian WACKER, Subhrajit ROYCHOWDHURY, David TOLEDANO, Srinivas BOLLAPRAGADA
  • Publication number: 20190283134
    Abstract: Method for additively manufacturing at least one three-dimensional object whereby a process gas stream streams across the build plane (BP), whereby the process gas stream is adapted to transport respective fume particles from a layer of build material (3) which are generated during selective irradiation and consolidation of the respective layer of build material (3); wherein it is determined that the process gas stream fulfils a pre-definable or pre-defined scheduling criterion; wherein the start time for starting irradiating and consolidating of a first area (A1) and/or the start time for starting irradiating and consolidating the at least one further area (A2, An) is determined on the basis of the determination that the process gas stream has fulfilled the pre-definable or pre-defined scheduling criterion.
    Type: Application
    Filed: February 11, 2019
    Publication date: September 19, 2019
    Applicant: CONCEPT LASER GMBH
    Inventor: Kai Hertel
  • Publication number: 20190143606
    Abstract: Method for additively manufacturing at least one three-dimensional object (2) by means of successive layerwise selective irradiation and consolidation of build material layers by means of at least one energy beam (4), whereby each build material layer comprises at least one irradiation area (IA) which is to be selectively irradiated and thereby, selectively consolidated during the additive build-up of the three-dimensional object (2) to be additively manufactured, the irradiation area (IA) being subdivided into a number of irradiation sub-areas (ISA), wherein at least one irradiation sub-area (ISA) having the shape of a polygon, the polygon having at least five sides.
    Type: Application
    Filed: November 9, 2018
    Publication date: May 16, 2019
    Applicant: CONCEPT LASER GMBH
    Inventor: Kai HERTEL
  • Publication number: 20190118483
    Abstract: Method for operating at least one apparatus (1) for additively manufacturing of three-dimensional objects (2-5) by means of successive layerwise selective irradiation and consolidation of layers (6) of a build material which can be consolidated by means of an energy beam (12), wherein at least one object (2-5) is being built by successively irradiating layers (6) of the object (2-5) in a build plane (13), wherein at least one part (16-31) of at least one layer (6) of the object (2-5) is assigned to be irradiated by a first energy beam (12) and at least one other part (16-31) of at least one layer (6) of the object (2-5) is assigned to be irradiated by another energy beam (12), wherein the parts (16-31) of layers (6) are assigned to be irradiated by one of the at least two energy beams (12) based on a Huffman coding.
    Type: Application
    Filed: October 19, 2018
    Publication date: April 25, 2019
    Applicant: CONCEPT LASER GMBH
    Inventor: Kai HERTEL
  • Publication number: 20190022924
    Abstract: Method for producing a machine-readable controlling and/or operating means (M) for controlling and/or operating at least one functionality of an apparatus (1) for additively manufacturing a three-dimensional object (2) is provided which can be consolidated by means of an energy beam (4), including: providing a specified data format, producing a provisional controlling and/or operating means (PM), checking if the produced provisional controlling and/or operating means (PM) fulfils at least one pre-defined certification criterion, and if the provisional controlling and/or operating means (PM) fulfils the at least one certification criterion, producing the machine-readable controlling and/or operating means (M) by providing at least one certification key (K) to the provisional controlling and/or operating means (PM).
    Type: Application
    Filed: July 20, 2018
    Publication date: January 24, 2019
    Applicant: CONCEPT LASER GMBH
    Inventors: Philipp Schumann, Kai Hertel, Timo Voigt
  • Publication number: 20190022795
    Abstract: Apparatus (1) for additively manufacturing of three-dimensional objects (2) by means of successive layerwise selective irradiation and consolidation of layers of a build material (3) which can be consolidated by means of an energy beam (4, 5), wherein the apparatus (1) comprises a scanning unit (6) configured to scan the energy beam (4, 5) over at least a part of a build plane (7), a focusing unit (15) is provided that is configured to control a focal position (13, 14) of the energy beam (4, 5) via a positioning of at least one optical component of the focusing unit (15) and/or a positioning of the focusing unit (15) relative to the build plane (7).
    Type: Application
    Filed: July 20, 2018
    Publication date: January 24, 2019
    Applicant: CONCEPT LASER GMBH
    Inventors: Maximilian Bauer, Kai Hertel