Patents by Inventor Mark Steltenpool

Mark Steltenpool 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: 10466404
    Abstract: A primary optic for a light-emitting diode or device (LED) includes a tilted wedge atop a truncated compound parabolic concentrator (CPC). The CPC includes an input face and a lower exterior surface defined by a tilted parabolic segment rotated about an axis. The bottom end of the lower exterior surface joins the perimeter of the input face. The tilted wedge includes an upper exterior surface above the lower exterior surface, and an interior conical surface surrounded by the lower and the upper exterior surfaces. The upper exterior surface is defined by a tilted straight line rotated about the axis. The interior conical surface is defined by a smooth curve rotated about the axis. The interior conical surface has a vertex located at the axis and within the lower exterior surface. The top ends of the interior conical surface and the upper exterior surface join to define an output aperture.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: November 5, 2019
    Assignee: LUMILEDS LLC
    Inventors: Pascal Bloemen, Maarten van-Lierop, Rick Nijkamp, Mark Steltenpool, Hugo Cornelissen
  • Publication number: 20170329071
    Abstract: A primary optic for a light-emitting diode or device (LED) includes a tilted wedge atop a truncated compound parabolic concentrator (CPC). The CPC includes an input face and a lower exterior surface defined by a tilted parabolic segment rotated about an axis. The bottom end of the lower exterior surface joins the perimeter of the input face. The tilted wedge includes an upper exterior surface above the lower exterior surface, and an interior conical surface surrounded by the lower and the upper exterior surfaces. The upper exterior surface is defined by a tilted straight line rotated about the axis. The interior conical surface is defined by a smooth curve rotated about the axis. The interior conical surface has a vertex located at the axis and within the lower exterior surface. The top ends of the interior conical surface and the upper exterior surface join to define an output aperture.
    Type: Application
    Filed: May 9, 2017
    Publication date: November 16, 2017
    Inventors: Pascal Bloemen, Maarten van-Lierop, Rick Nijkamp, Mark Steltenpool, Hugo Cornelissen
  • Publication number: 20120192933
    Abstract: A light trapping layer for use in a thin film solar cell is provided. The light trapping texture enhances efficiency of the thin film solar cell. The light trapping layer has a plurality of substantially flat areas between a plurality of periodically repeating non-pointed depressions with rounded edges. The plurality of substantially flat areas facilitates deposition and growth of a layer of transparent conductive oxide over said light trapping layer. The plurality of periodically repeating non-pointed depressions with rounded edges limit formation of at least one of cracks, voids, and low density areas in semiconductor layers of the thin film solar cell. Period of the non-pointed depressions ranges between 100 nanometers and 1500 nanometers, and depth of said non-pointed depressions ranges between 50 nanometers and 1200 nanometers.
    Type: Application
    Filed: January 27, 2012
    Publication date: August 2, 2012
    Inventors: Mark Steltenpool, Rob Van Erven