Patents by Inventor Ralf H. Erz

Ralf H. Erz 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).

  • Optical attenuation filter
    Patent number: 6587288
    Abstract: An attenuation filter contains absorbing thin film layers, which comprise gray metals or metal compounds. The attenuation filter offers significant advantages when used in optical communication systems subjected to a relatively high flux of incident light. It was surprisingly discovered that particular thin film materials provide significant protection to the attenuating thin film layer thereby improving the temporal stability and power handling capacity over prior art devices.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: July 1, 2003
    Assignee: Optical Coating Laboratory, Inc.
    Inventors: Ralf H. Erz, Scott McEldowney, Lauren R. Wendt
  • Optical attenuation filter
    Publication number: 20020176183
    Abstract: This invention relates to attenuation filters having absorbing thin film layers, which comprises gray metals or metal compounds. The attenuation filters offer significant advantages when used in optical communication systems wherein they are subjected to a relatively high flux of incident light. It was surprisingly discovered that particular thin film materials provide significant protection to the attenuating thin films layer thereby improving the temporal stability and power handling capacity over prior art devices.
    Type: Application
    Filed: March 12, 2001
    Publication date: November 28, 2002
    Applicant: Optical Coating Laboratory, Inc.
    Inventors: Ralf H. Erz, Scott McEldowney, Lauren R. Wendt