Patents by Inventor Wolfgang Stiepek

Wolfgang Stiepek 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).

  • Variable optical attenuator
    Patent number: 4591231
    Abstract: The variable optical attenuator (1) comprises two spherical lenses (7, 8), one at the input end and one at the output end, between which a bundle of parallel rays is present. A disk (4) having areas (9) with neutral density filters (10) of different attenuation is rotatable through the bundle of rays. A locking mechanism (13, 14, 15) acts on a stub shaft (11) at the disk (4), and its stop positions correspond to the locations of the areas (9). This permits the attenuation of the attenuator (1) to be adjusted in steps.
    Type: Grant
    Filed: May 28, 1985
    Date of Patent: May 27, 1986
    Assignee: International Standard Electric Corporation
    Inventors: Manfred Kaiser, Wolfgang Stiepek