Abstract: A transparency that is used in a flying spot scanner to generate imagery for simulated flight contains a rectangular center section and eight peripheral sections, four of which lie along the side boundaries of the center section, while the remaining four are at the corners of the center section such that their edges are contiguous to the edges of the side peripheral sections. Each of the nine sections is laid out such that corresponding terrain features lie along opposite margins. This coupled with the fact that all nine sections are identical enables all of the sections to blend together into a mosaic so that the section boundaries within the interior of the mosaic are barely, if at all, discernible. As a consequence, the terrain pattern along any boundary of the center section is repeated along the opposite boundary. A projected raster moves essentially within the center section in response to commands issued from a simulated cockpit.

Abstract: This light modulating device comprises three subsystems: an electron gun which produces a scanning constant intensity electron beam, a liquid crystal cell, and an appropriate optical system to deliver light to and from the modulating effects of the liquid crystal cell. The modulation is accomplished by utilizing a scanning constant intensity electron beam to deposit electrical charge through a secondary emission process on the dark side of a dielectric mirror within the liquid crystal cell, the amount of charge deposited being dependent upon the video voltage at the transparent electrode of the cell which is applied in synchronism with the scanning electron beam. In this manner a charge distribution is written on the back of the dielectric mirror which now contains all of the information within the video signal. The electrical field arising from this charge distribution in turn modulates the birefringence across the nematic phase liquid crystal.