Patents by Inventor Frederick Kent Copeland

Frederick Kent Copeland 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).

  • Multimirror stack for vertical integration of MEMS devices in two-position retroreflectors
    Patent number: 6439728
    Abstract: A retroreflector is provided with a substrate over which a moveable micromirror is formed. The moveable micromirror is adapted to be tilted into at least two distinct positions. A multimirror stack is also positioned on the substrate. The multimirror stack includes multiple fixed structures bonded together. Each of the fixed structures has a reflective surface, and the multimirror stack is configured with respect to the moveable micromirror to provide retroreflection paths. An optical ray incident at a predetermined angle with respect to the substrate is subjected to retroreflection for at least two distinct positions of the moveable micromirror. Each retroreflection includes a reflection off the moveable micromirror and a reflection off one of the fixed structures.
    Type: Grant
    Filed: August 28, 2001
    Date of Patent: August 27, 2002
    Assignee: Network Photonics, Inc.
    Inventor: Frederick Kent Copeland