Patents Assigned to Foresight, Inc.
  • Patent number: 4951150
    Abstract: An optical projection system which in one implementation reflects illumination from a source off of an electro-optic imaging member in the shape of a plate. The imaging member in the preferred embodiment is an electro-optic ceramic plate, such as PLZT, which is substantially transparent to visible light when not affected by an electric field or electron beam. The imaging member is bonded to the front face-plate of a cathode-ray tube which includes an electron beam generator, a controller for modulatng the intensity of the electron beam with an image and a raster scan generator for scanning the beam across the front face of the tube. At spots where the electron beam strikes the electro-optic plate, the opalescence of the spot is changed in accordance with the scattering effect of the crystal and in dependence upon the intensity of the beam thereby writing a physical nonvolatile image in the imaging member.
    Type: Grant
    Filed: March 1, 1989
    Date of Patent: August 21, 1990
    Assignee: Foresight, Inc.
    Inventor: Iben Browning