Patents by Inventor Frithioff Johansen

Frithioff Johansen 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: 5812313
    Abstract: Method and display for providing a magnified image of a two-dimensional, periodic image pattern. An apertured sheet is arranged in front of the two-dimensional, periodic image pattern preferably being in a plane B and preferably in distance therefrom, the apertured sheet preferably also being in a plane A and in any direction to the plane having a center distance between the apertures, which almost corresponds to the center distance in the same direction in the plane B containing the periodic image pattern. As a result, a magnified image of the individual image element of the image pattern is obtained. Moreover, a stereoscopic depth effect may be obtained, if the apertured sheet and the image pattern are in different planes.
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: September 22, 1998
    Inventors: Frithioff Johansen, Henrik Boetius