Patents by Inventor Martin Laudenberger

Martin Laudenberger 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).

  • Photometer tube for microscopes
    Patent number: 4790663
    Abstract: A photometer tube for a microscope contains several switchable reflectors (5, 11). By the appropriate use of these, the ray path (c) for the back-illuminated measuring field stop (7) is reflected out of the photometry ray path (b) and is conducted to a second image inlet (32) of a beam splitter prism or prism slide. Various switchable elements (mirrors 5 and 11; stop 4; prism 2/22) in the tube are electrically driven and are centrally actuated from a control unit.
    Type: Grant
    Filed: October 19, 1987
    Date of Patent: December 13, 1988
    Assignee: Carl-Zeiss-Stiftung
    Inventors: Bernd Faltermeier, Martin Laudenberger