Patents Assigned to OCAS AS
  • Passive beam derotator
    Patent number: 5018844
    Abstract: A beam positioning system having two articulated arms with a pentaprism, or equivalent 90 degree prism, and a rotator prism, such as a Pechan prism, appropriately located in the path of a beam from a light source in combination with right angle prisms to maintain the final leg of the beam in orientation with the original orientation of the beam from the light source.
    Type: Grant
    Filed: December 27, 1989
    Date of Patent: May 28, 1991
    Assignee: OCA Applied Optics, Inc.
    Inventor: James Horton