Patents by Inventor Ernst Bernhard

Ernst Bernhard 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).

  • Stepped lens with Fresnel surface structure produced by lithography and process for manufacturing of same
    Patent number: 5566023
    Abstract: In a stepped lens with a Fresnel surface structure produced by lithography and a process for fabricating same, the high potential exposure speed of high-speed electron-beam exposure systems which work with variable rectangular beam cross sections is converted in such a way that stepped Fresnel type lenses can be fabricated with high efficiency and, in so doing, the required amounts of data is reduced. According to the invention, radiation dose distributions which correspond to cylindrical lenses are exposed one upon the other, at least one of the radiation dose distributions corresponding to a Fresnel type cylindrical lens.Lens structures with any desired lens curvature, from radially spherical to elliptical, can be efficiently produced by lithography by the disclosed process.
    Type: Grant
    Filed: December 28, 1994
    Date of Patent: October 15, 1996
    Assignee: Jenoptik Technologie GmbH
    Inventor: Ernst-Bernhard Kley
  • Pressure propellant generating system
    Patent number: 3973392
    Abstract: A pressure propellant generating system for a power plant in a submarine vehicle, said propellant including a sea water component, the pressure of which can be regulated so as to vary the output of the power plant in a controlled manner.
    Type: Grant
    Filed: October 9, 1974
    Date of Patent: August 10, 1976
    Assignee: Forenade Fabriksverken
    Inventor: Ernst Bernhard Hallqvist