Abstract: The projector includes a housing with a projection path duct holding a dove prism and a mirror deflecting the path into a vertical axis. The beam in that path is intercepted by a tiltable mirror held in a rotatable disk. A transmission which includes bevel gearing, shafts and worm gears couples the tiltable mirror to a computer controlled motor for adjusting the elevation of the projection. Other transmission devices, including gears and worm gear, couple the disk to another motor to causing the projection beam to project in different horizontal directions. The projector is used to superimpose particular images upon a background image in a ship simulator.

Abstract: A miniature map viewer employing a magnifying lens and an aligning reticle disposed within the field of view of the lens is disclosed. The reticle is used for aligning points on the map and real geographic features and may be augmented by and used in conjunction with an angular orientation degree scale indicator, a compass, and/or an object sighting device, which are also disclosed.

Abstract: A film projection device having a screen, light source, lens and mirror system and a reference indicator disposed immediately in front of the mirror for shadow casting a reference line onto the image of a film projected onto the screen via initial projection onto the mirror.

Abstract: A projection device provided with at least two different enlarging projection systems for the projection on a screen of a set of at least two slides provided on one carrier, said slides covering the same area of a plan or map, one slide being more detailed than the other. The device projects the first less detailed slide entirely and the second or next, more detailed slide only in part but on a larger scale.The device comprises further a transparent runner indicating on the first slide the part of the next slide that is projected.

Abstract: A ship's maneuvering simulator comprises a wheel house of a ship having a projection screen spaced therefrom and a point light source-shadow image projector provided for the projection of a shadow image, and one or more scale models and air-water images controlled by a computer, and a projection device for the projection of a motionless part of a forepart of a ship that is visible from the wheel house. At least two plane translucent projection screens are provided that join one another at an angle, and behind each projection screen the point light source-shadow image projector is mounted such that the central position in the wheel house and the stationary point light source are positioned symmetrically with respect to this projection screen and the models provided are uniform.

Abstract: Apparatus and method for the visual display of an object, such as an aircraft, at continuously variable attitudes comprising two hologram films of the object made in wrap-around 360.degree. fashion on axes through the object and normal to each other to store object images comprising a complete spherical view of the object and the provision of scanners, a laser beam source, reflectors and an instructor's control panel of amplifiers and switching circuits to direct the laser beam to the film having the view desired and at an xy address on the film at which the desired view is located and a display screen for viewing the selected image or series of continuously variable images.

Abstract: A bi-color, single-image plane character display technique wherein the chcters of two distinct colors are written by a scanned ultraviolet beam onto respective photochromic layers disposed on opposite sides of a film situated in the path of a projected light beam, which film is transparent to the light beam but opaque to the ultraviolet beam.

Abstract: A topographical map display device for a vehicle, such as an aircraft, wherein a map in miniaturized form is carried on a carriage coupled to a frame by way of a mechanism which permits translational planar movement only of the carriage with respect to the frame and an image of an area of the map is projected onto a display surface on which a fixed datum represents the vehicle position, the carriage being moved with respect to the frame by actuator means in dependence on the range and bearing of the vehicle with respect to a ground-fix position so that the image of the map projected onto the display device changes progressively with vehicle movement whilst maintaining a fixed orientation.