Patents by Inventor Eric L. Shirley

Eric L. Shirley 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).

  • Minimizing spatial-dispersion-induced birefringence
    Patent number: 7163649
    Abstract: A composition formed from Group II fluorides in which the composition has little or no intrinsic birefringence at a selected wavelength. The composition is a mixed solid solution of CaF2 with a second crystal of SrF2 or BaF2. The resulting composition is in the form of Ca1?xSrxF2 or Ca1?xBaxF2, or a combination of SrF2 and BaF2, in the form of Ca1?x?ySrxBayF2. The specific form of the composition that effectively nulls out the intrinsic birefringence at a selected wavelength within the UV range is determined in one preferred method from the magnitudes of the intrinsic birefringences of the components, CaF2, SrF2, and BaF2.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: January 16, 2007
    Assignee: The United States of America as represented by the Secretary of Commerce
    Inventors: John H. Burnett, Zachary H. Levine, Eric L. Shirley
  • Minimizing spatial-dispersion-induced birefringence
    Publication number: 20030012724
    Abstract: A composition formed from Group II fluorides in which the composition has little or no intrinsic birefringence at a selected wavelength. The composition is a mixed solid solution of CaF2 with a second crystal of SrF2 or BaF2. The resulting composition is in the form of Ca1−xSrxF2 or Ca1−xBaxF2, or a combination of SrF2 and BaF2, in the form of Ca1−x−ySrxBayF2. The specific form of the composition that effectively nulls out the intrinsic birefringence at a selected wavelength within the UV range is determined in one preferred method from the magnitudes of the intrinsic birefringences of the components, CaF2, SrF2, and BaF2.
    Type: Application
    Filed: July 9, 2002
    Publication date: January 16, 2003
    Inventors: John H. Burnett, Zachary H. Levine, Eric L. Shirley