Patents by Inventor David D. Rodstein

David D. Rodstein 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).

  • Diffractor-diffuser system for a fluorescent lumen package
    Patent number: 7841748
    Abstract: The diffractor has a profile defined by first, second and third parabolic segments, and continuously tapering facets for improved lighting performance. Different diffuser geometries are provided to generate differing light distribution patterns, including a conical diffuser, and a diffuser having a fresnel lens portion and an angled flange portion. Equal numbers of facets and/or facets of similar geometrical profile may be provided on the diffuser and on the diffractor.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: November 30, 2010
    Assignee: RLR Industries, Inc.
    Inventors: David D. Rodstein, Stewart B. Lewis
  • DIFFRACTOR-DIFFUSER SYSTEM FOR A FLUORESCENT LUMEN PACKAGE
    Publication number: 20080130280
    Abstract: An improved light fixture lumenaire having a diffractor-diffuser system optimized for use with multi-lamp lumen packages including high-efficiency fluorescent bulbs. The diffractor has a profile defined by first, second and third parabolic segments, and continuously tapering facets for improved lighting performance. Different diffuser geometries are provided to generate differing light distribution patterns, including a conical diffuser, and a diffuser having a fresnel lens portion and an angled flange portion. Equal numbers of facets and/or facets of similar geometrical profile may be provided on the diffuser and on the diffractor.
    Type: Application
    Filed: May 31, 2007
    Publication date: June 5, 2008
    Inventors: David D. RODSTEIN, Stewart B. LEWIS