Patents by Inventor Lawrence M. Perry

Lawrence M. Perry 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: 4208086
    Abstract: A projection system for providing a magnified image from a holographic transparency in which the transparency is illuminated from one side by a laser, and two lens are serially arranged on the other side of the transparency, the second of these lens having a focal length greater than the first one. An Arnulf afocal plate closely follows serially the second of the lens. A viewer in front of the afocal plates perceives a three-dimensional real image positioned between the viewer and the afocal plate, which image is a magnified and dimensionally correct reproduction of the image from which the hologram was originally made.
    Type: Grant
    Filed: May 28, 1976
    Date of Patent: June 17, 1980
    Inventor: Lawrence M. Perry