Patents Assigned to Tamarack Telecom Inc.
  • Curvilinear motion type optical filter driving mechanism
    Patent number: 5161069
    Abstract: A curvilinear motion type optical filter driving mechanism, comprising a lens-house, a filter holder, a motor, a driven gear, and a driving gear. The filter holder has an optical filter mounted thereon at the front and disposed in a curvilinear direction, and a rack at the back. Rotating the motor causes the drive gear to carry the optical filter, via the driven gear and the rack, to make a curvilinear motion over the lens of the lens-house.
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: November 3, 1992
    Assignee: Tamarack Telecom Inc.
    Inventor: Fu Jowang