Patents by Inventor Christopher Weiland Hall

Christopher Weiland Hall 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).

  • Publication number: 20070229683
    Abstract: A color wheel comprises a plurality of light filters mounted on a hub or other mounting surface for rotation. The outer circumferential edge of the filters extend radially beyond the outer circumferential edge of the mounting surface. The mounting surface is beveled at its outer circumferential edge. The filters are mounted by adhesive between each filter and the mounting surface. The adhesive extends into at least a portion of the area between the bevel and the filters. Color wheel assemblies comprise such color wheels mounted to a rotational motor. The outer circumferential edges of the filters are aligned with each other to the same radial distance from the central rotational axis. In certain exemplary embodiments the filters are wedge shaped, having contact with adjacent filters only at their radially outer periphery.
    Type: Application
    Filed: April 4, 2006
    Publication date: October 4, 2007
    Applicant: Bookham Technologies plc
    Inventors: Lawrence E. Larson, Jerry Gene Gage, Peter C. Egerton, Vonn Sawatzky, Christopher Weiland Hall, Michael A. Scobey