Patents by Inventor Ray Lewandowski

Ray Lewandowski 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).

  • Polarization preserving projection screen with engineered particle and method for making same
    Patent number: 8659828
    Abstract: Polarization preserving projection screens provide optimum polarization preservation for 3D viewing. The projection screens additionally provide improved light control for enhanced brightness, uniformity, and contrast for both 2D and 3D systems. Generally, the disclosed method for providing a projection screen comprises embossing at least a first side of a first substrate to produce an optically functional material and then cutting the optically functional material into pieces to produce a plurality of engineered particles. The plurality of engineered particles may then be deposited on a second substrate to produce a substantially homogeneous optical appearance of the projection screen.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: February 25, 2014
    Assignee: RealD Inc.
    Inventors: Gary D. Sharp, David A. Coleman, Joel Petersen, Chris Rich, Ray Lewandowski