Patents Represented by Attorney, Agent or Law Firm James M. Skarich
  • Parabolic membrane mirror having a shape-restorative force
    Patent number: 6752502
    Abstract: An optical quality, freestanding, compliant membrane mirror is cast with a concave parabolic shape, and includes a substrate and a reflective stress coating. The stress coating is in compression and applies a tensile shear stress to the substrate that opposes and offsets the intrinsic stress in the substrate that would otherwise decrease the concavity. The stress coating generates a force to restore the membrane mirror to its cast concave parabolic shape when an external force deforms the mirror.
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: June 22, 2004
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Richard A. Carreras, Dan K. Marker, James M. Wilkes, Dennis Duneman, James R. Rotge