Patents by Inventor Johan Engelhardt

Johan Engelhardt 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).

  • Method and device for adjusting at least one light beam in an optical system
    Patent number: 7675019
    Abstract: A device (70) is disclosed for adjusting a light beam (1) in an optical system (100), whereby the optical system (100) defines an optical axis (60). The device (70) for adjusting comprises means for coupling-in (3) of the light beam into a housing part (80) of the device (70). The means for coupling-in (3) determines a coupling-in point (3a) and a coupled in light beam (9). At least a first and a second photo detector (10, 22) are arranged in different in distances to the coupling-in point. (3a). In the coupled in light beam (9) at least one beam splitter (36) is provided, which directs the coupled in light beam (9) on at least one of the photo detectors (10, 22).
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: March 9, 2010
    Assignee: Leica Microsystems CMS GmbH
    Inventors: Holger Birk, Johan Engelhardt
  • Method for adjusting a microscope and microscope with a device for adjusting a light beam
    Patent number: 6813072
    Abstract: A device for adjusting the light beam in a microscope. The device couples the light beam into a housing of the device. A first and a second detectors are positioned at different distances to the coupling point. In the line of coupled in light beam at least one beam splitter is provided, which directs the coupled-in light beam onto at least one of the photo detectors.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: November 2, 2004
    Assignee: Leica Microsystems Heidelberg GmbH
    Inventors: Holger Birk, Johan Engelhardt