Patents by Inventor Douglas Fredrick Zahn

Douglas Fredrick Zahn 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).

  • Mitigating the effects of miniaturizing integrating spheres for fiber optic measurement
    Patent number: 6846085
    Abstract: An miniature integrating sphere has a spherical volume with walls of a material for reflecting light, a light inlet and a light outlet. The light inlet is offset from a diameter axis of the spherical volume and the light inlet and light outlet are offset at non-perpendicular and non-parallel relation to each other. The light inlet is molded or milled to a shape conforming to the shape of the cone of light provided by a fiber optic device as an input to the integrating sphere. A number of miniature integrating spheres may be used respectively in plural channels of an optical measurement instrument.
    Type: Grant
    Filed: January 21, 2002
    Date of Patent: January 25, 2005
    Assignee: DBM Optics, Incorporated
    Inventors: Michael Paul Minneman, Douglas Fredrick Zahn, Elwood James Egerton
  • Mitigating the effects of miniaturizing integrating spheres for fiber optic measurement
    Publication number: 20020105739
    Abstract: An miniature integrating sphere has a spherical volume with walls of a material for reflecting light, a light inlet and a light outlet. The light inlet is offset from a diameter axis of the spherical volume and the light inlet and light outlet are offset at non-perpendicular and non-parallel relation to each other. The light inlet is molded or milled to a shape conforming to the shape of the cone of light provided by a fiber optic device as an input to the integrating sphere. A number of miniature integrating spheres may be used respectively in plural channels of an optical measurement instrument.
    Type: Application
    Filed: January 21, 2002
    Publication date: August 8, 2002
    Inventors: Michael Paul Minneman, Douglas Fredrick Zahn, Elwood James Egerton