Patents by Inventor Daniel L Stark

Daniel L Stark 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: 6870676
    Abstract: Disclosed is an electro magnetic radiation polarization converter, available in various combinations of the embodiments features, used to convert non polarized radiation into a single polarization state, which may be utilized in many devices requiring polarized radiation. Disclosed is a unique geometric configuration and positing of optic layers that cause polarization separation by reflection and polarization conversion utilizing birefringent materials as well as phase retardation materials to convert incident radiation to a linear or elliptical polarization.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: March 22, 2005
    Inventor: Daniel L Stark