Patents Assigned to J.A. Wooliam Co., Inc.
  • Enhanced detector operation made possible by application of a functional plurality of gratings and combination dichroic beam splitter-prisms
    Patent number: 10247611
    Abstract: Application of detectors of electromagnetic radiation and systems for enabling the optimization thereof for application over various specific wavelength ranges, involving functional combinations of gratings and/or combination dichroic beam splitter-prisms, which themselves can be optimized as regards wavelength dispersion characteristics.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: April 2, 2019
    Assignee: J.A. WOOLIAM CO., INC.
    Inventors: Martin M. Liphardt, Ping He, Duane E. Meyer
  • System for and method of investigating the exact same point on a sample substrate with multiple wavelengths
    Patent number: 7508510
    Abstract: System for and Method of analyzing a sample at substantially the exact same small spot thereon with a plurality of wavelengths using a lens system which provides the same focal length at at least two wavelengths at various positions thereof with respect to a sample, including analyzing data obtained at those wavelengths.
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: March 24, 2009
    Assignee: J.A. Wooliam Co., Inc.
    Inventors: Galen L. Pfeiffer, Martin M. Liphardt, Blaine D. Johs, Craig M. Herzinger, Christopher A. Goeden, Ping He, John A. Woollam, James D. Welch