Patents by Inventor Dar-Qwei (David) Fuh

Dar-Qwei (David) Fuh 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: 6775043
    Abstract: An optical cross-connect switch employing pallets of mirror assemblies configured as an array, wherein each mirror assembly includes a mirror that is rotatable in a two-axis system to steer a beam in 2-dimensional space. Each mirror assembly includes a mirror module that can be rotated in relation to a first axis as well as in relation to a second axis that is perpendicular to the first axis. The mirror modules are suspended by wires in a manner that allows the pitch and roll of the mirror module to be controlled. Coils and magnets are employed to generate magnetic fields which create a rotating torque in each of the two rotational axes. By controlling the magnetic fields that are generated, the degree of rotation can in turn be controlled. The configuration provides for a practical, area efficient, bidirectional, randomly addressable optical cross-connect switch design that can employ conventional materials and processes.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: August 10, 2004
    Assignee: Blue Sky Research
    Inventors: Chak Leung, Kent Leung, Dar-Qwei (David) Fuh, Stanley Yu, Howie Trang