Patents by Inventor Elfred Lewis

Elfred Lewis 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: 10408745
    Abstract: A method of referencing in optical absorption spectroscopy using broadband light sources for determining the concentration of substances in gaseous or fluid media through and to a device for measuring the concentration of substances in gaseous or fluid media within the measurement path of a measurement cell using absorption spectroscopy of light emitted from broadband light sources via light guiding optics.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: September 10, 2019
    Assignee: BLUEPOINT MEDICAL GMBH & CO. KG.
    Inventors: Martin Degner, Hartmut Ewald, Nils Damaschke, Elfred Lewis
  • Publication number: 20160341660
    Abstract: A method of referencing in optical absorption spectroscopy using broadband light sources for determining the concentration of substances in gaseous or fluid media through and to a device for measuring the concentration of substances in gaseous or fluid media within the measurement path of a measurement cell using absorption spectroscopy of light emitted from broadband light sources via light guiding optics.
    Type: Application
    Filed: August 2, 2016
    Publication date: November 24, 2016
    Inventors: Martin DEGNER, Hartmut EWALD, Nils DAMASCHKE, Elfred LEWIS
  • Publication number: 20120006098
    Abstract: The invention relates to a method and to a device for using partially non-stabilized broadband light sources to accurately measure partially broadband-absorbing substances using referencing measuring cells. In order to create a low-cost, high-resolution, and at the same time fast spectrographic device for measuring concentrations of substances in fluid or gaseous media that is also suitable for harsh environments, the light radiated by the broadband light sources (1) through light guiding optical systems is fed through the measuring section of the self-referencing measuring cell (20, 30, 40) or only partially through a measuring cell (10) to a measurement detector (photoreceptor 11) and partially through a reference path (optical waveguide 8) to a reference detector (photoreceptor 15), and a mode coupler (5, 9, 14) is associated with each optical waveguide (2, 4, 7, 8) in order to homogenize the radiation characteristic of the broadband light sources (1), which varies over time and space.
    Type: Application
    Filed: December 10, 2009
    Publication date: January 12, 2012
    Inventors: Martin Degner, Hartmut Ewald, Nils Damaschke, Elfred Lewis