Patents by Inventor William R. LeFew

William R. LeFew 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).

  • Optical diffusers with spatial variations
    Patent number: 8974069
    Abstract: A diffuser is configured to diffuse radiation from multiple light sources. The diffuser includes a substrate having optical structures that exhibit both microvariations and macrovariations along the substrate. For example, an array of microlenses may be provided that include at least one feature that varies as a function of the spacing between the light sources. Lighting systems using these diffusers may also be provided.
    Type: Grant
    Filed: July 21, 2009
    Date of Patent: March 10, 2015
    Assignee: Bright View Technologies Corporation
    Inventors: Ken G. Purchase, William R. LeFew, Robert L. Wood, Robert M. Soule, III
  • OPTICAL DIFFUSERS WITH SPATIAL VARIATIONS
    Publication number: 20100039808
    Abstract: A diffuser is configured to diffuse radiation from multiple light sources. The diffuser includes a substrate having optical structures that exhibit both microvariations and macrovariations along the substrate. For example, an array of microlenses may be provided that include at least one feature that varies as a function of the spacing between the light sources. Lighting systems using these diffusers may also be provided.
    Type: Application
    Filed: July 21, 2009
    Publication date: February 18, 2010
    Inventors: Ken G. Purchase, William R. LeFew, Robert L. Wood, Robert M. Soule, III