Patents by Inventor Olaf Stenzel

Olaf Stenzel 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: 20190086580
    Abstract: An optical coating and a method for producing an optical coating with reduced light scattering are disclosed. In an embodiment, an optical coating includes at least one scattering zone, wherein the scattering zone is arranged on a surface of the optical coating, wherein an electric field strength of the electromagnetic radiation has a minimum in the scattering zone in order to reduce scattering of the electromagnetic radiation, and wherein the electric field strength has the minimum above the surface of an uppermost layer of the optical coating.
    Type: Application
    Filed: February 24, 2017
    Publication date: March 21, 2019
    Inventors: Alexander von Finck, Sven Schröder, Steffen Wilbrandt, Olaf Stenzel, Angela Duparre, Gunther Notni
  • Patent number: 8081317
    Abstract: The embodiments disclosed herein relate to an electrostatic chuck, or an optically structured element or an optical mask that comprise a metal film as well as a transparent cover applied on a substrate. At least two anti-reflective films are inserted between the metal film and the cover that reduce the reflectance of the metal film, as viewed from the surface, to almost zero. As a result, a direct interferometer measurement of the surface structure of the transparent cover is possible. Methods of measurement and of use are also disclosed.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: December 20, 2011
    Assignee: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.
    Inventors: Gerhard Kalkowski, Olaf Stenzel, Wieland Stöckl
  • Publication number: 20100046005
    Abstract: The invention relates to a device for the contactless detection of a three-dimensional contour, comprising a projector with an imaging element and a projection lens for depicting a stripe pattern that is generated on the imaging element in an object space. The invention further comprises a camera arrangement for the surveillance of the object space from two different directions, having two camera lenses. The projector and the camera arrangement are housed together in a measurement head that can be handheld. The invention further relates to a method for detecting a three-dimensional contour using said device.
    Type: Application
    Filed: October 16, 2007
    Publication date: February 25, 2010
    Applicant: Fraunhofer-Gesellschaft zur Forderung der angewand ten Forschung e.V.
    Inventors: Gerhard Kalkowski, Olaf Stenzel, Wieland Stöckl
  • Publication number: 20090279101
    Abstract: The embodiments disclosed herein relate to an electrostatic chuck, or an optically structured element or an optical mask that comprise a metal film as well as a transparent cover applied on a substrate. At least two anti-reflective films are inserted between the metal film and the cover that reduce the reflectance of the metal film, as viewed from the surface, to almost zero. As a result, a direct interferometer measurement of the surface structure of the transparent cover is possible. Methods measurement and of use are also disclosed.
    Type: Application
    Filed: May 6, 2009
    Publication date: November 12, 2009
    Applicant: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.
    Inventors: Gerhard Kalkowski, Olaf Stenzel, Wieland Stockl