Patents Assigned to Amsys Ltd.
  • Interferometric measurement device with non stabilized light source
    Patent number: 5189489
    Abstract: The present invention relates to a method for greatly extending the effective coherence length of non-stabilized lasers allowing one to use them in interferometers with large optical path differences. The embodiment described as an example comprises a robust Twyman-Green interferometer for accurate measurement of extended displacements.
    Type: Grant
    Filed: May 14, 1991
    Date of Patent: February 23, 1993
    Assignee: Amsys Ltd.
    Inventor: Andrei Brunfeld