Patents by Inventor Angela L. Campbell

Angela L. Campbell 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: 7005186
    Abstract: A new damage resistant and tolerant optical element is disclosed. Prior art solid or liquid host matrices are replaced by a soft crosslinked polymer or similar host material. The viscoelastic properties of the matrix host material are controlled during formation so that there are regions of different softness, of stiffness, within the matrix, to form a stiffness gradient. Preferably, the matrix will be softest at a preselected focal plane where maximum electromagnetic radiation or energy output may be expected. The host matrix is doped with an appropriate dopant having a concentration distribution, preferably such that the concentration of dopant is highest in the region where the host matrix material is most soft. Two important disclosed example embodiments are an optical limiter and a solid state dye laser.
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: February 28, 2006
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Daniel G. McLean, Michael E. DeRosa, Donna M. Brandelik, Angela L. Campbell, Mark C. Brant
  • Patent number: 6620863
    Abstract: A damage resistant and tolerant optical element is disclosed. Prior art solid or liquid host matrices are replaced by a soft crosslinked polymer or similar host material. The viscoelastic properties of the matrix host material are controlled during formation so that there are regions of different softness, of stiffness, within the matrix, to form a stiffness gradient. Preferably, the matrix will be softest at a preselected focal plane where maximum electromagnetic radiation or energy output may be expected. The host matrix is doped with a light altering dopant having a concentration distribution, preferably such that the concentration of light limiting dopant is highest in the region where the host matrix material is most soft. Two important disclosed example embodiments are an optical limiter and a solid state dye laser.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: September 16, 2003
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Daniel G. McLean, Michael E. DeRosa, Donna M. Brandelik, Angela L. Campbell, Mark C. Brant