Patents by Inventor Joel Heersink

Joel Heersink 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: 8477317
    Abstract: A position measuring arrangement that includes a retroreflector, a light source generating a lightbeam and a scanning unit that generates a partially-divergent lightbeam. The scanning unit includes a scanning mirror mounted so it is deflected in a reproducible manner so that a grid-like scanning of a two-dimensional spatial area by the partially-divergent lightbeam takes place over a plurality of scanning tracks. The position measuring arrangement including an interferometric distance measuring unit that includes a beam splitter element that splits the lightbeam generated by the light source so that split lightbeams pass through a reference arm and a measuring arm at least once in each direction. The interferometric distance measuring unit includes an opto-electronic detector unit, through which a detection of distance-dependent signals from superimposed lightbeams from the reference arm and the measuring arm takes place.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: July 2, 2013
    Assignee: Dr. Johannes Heidenhain GmbH
    Inventors: Florian Schindler, Robert Kraus, Joel Heersink, Michael Stepputat
  • Publication number: 20110026041
    Abstract: A position measuring arrangement that includes a retroreflector, a light source generating a lightbeam and a scanning unit that receives the lightbeam and generates a partially-divergent lightbeam. The scanning unit includes a scanning mirror that is mounted so it can be deflected in a reproducible manner around two different rotating axes that cross each other in a center of the scanning mirror so that a grid-like scanning of a two-dimensional spatial area by the partially-divergent lightbeam, in relation to which the retroreflector is arranged, takes place over a plurality of scanning tracks. The position measuring arrangement further including an interferometric distance measuring unit that includes a beam splitter element that splits the lightbeam generated by the light source in such a way that split lightbeams pass through a reference arm and a measuring arm at least once in each direction.
    Type: Application
    Filed: July 28, 2010
    Publication date: February 3, 2011
    Inventors: Florian Schindler, Robert Kraus, Joel Heersink, Michael Stepputat