Patents by Inventor Joachim Heppner

Joachim Heppner 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).

  • Patent number: 6816247
    Abstract: In a moiré method for measuring the distortion of an optical imaging system in which and object grid having a two-dimensional object pattern is arranged in an object plane of the imaging system and an image grid having a two-dimensional image pattern is arranged in an image plane of the imaging system, these patterns are configured in the form of, for example cross-hatched patterns or checker board patterns, are adapted to suit one another such that a two-dimensional moiré fringe pattern that may be detected by a two-dimensional, spatially resolving, detection device is created when the object grid is imaged onto the image grid using the imaging system. Distortion components of the imaging system may be simultaneously determined along two differently oriented, in particular, two mutually orthogonal, image directions from a two-dimensional moiré fringe pattern.
    Type: Grant
    Filed: August 14, 2002
    Date of Patent: November 9, 2004
    Assignee: Carl Zeiss SMT AG
    Inventors: Joachim Heppner, Juergen Massig, Michael Arnz, Michael Kuechel, Juergen Penzing, Uwe Schellhorn
  • Patent number: 5566195
    Abstract: The invention is directed to an intracavity Raman laser with a collimated beam path in the Raman medium 10. The intracavity Raman laser includes a single-mode Stokes resonator, a mode stop 13, a telescope 3 for adapting the laser rod 20, a single mode also for the pump laser and a deflecting mirror system 4 for a more compact arrangement. The mode volumes of the pump laser and the Stokes resonator are matched.
    Type: Grant
    Filed: June 21, 1995
    Date of Patent: October 15, 1996
    Assignee: Carl-Zeiss-Stiftung
    Inventors: Joachim Heppner, Willibald Appt, Ralf Peter
  • Patent number: 5353228
    Abstract: A method for target-range measurement of round-trip transit time, for laser light pulses transmitted from the rangefinder and target-reflected back to a measuring device, is based on the fact that a predetermined measurement cycle is subdivided into time intervals and that, in each time interval, it is recorded whether a reflected light pulse has or has not arrived. A system for carrying out the method is characterized by the fact that, instead of totalizing counter modules, successive storage locations in a serial memory device are sequentially indexed under clock-pulse control and, depending upon the time at which a target-reflected pulse is detected, a logic signal is supplied for storage at the instantaneously receptive location within the memory device. Signal-evaluation apparatus including a microprocessor is connected to the memory device to evaluate range from the memory location at which the logic signal is found.
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: October 4, 1994
    Assignee: Carl-Zeiss-Stiftung, Heidenheim/Brenz
    Inventors: Wolfgang Geiss, Harald Heinrich, Joachim Heppner