Communications: electrical – Selective – Having indication or alarm
Patent
1980-01-11
1982-02-09
Groody, James J.
Communications: electrical
Selective
Having indication or alarm
340709, 340712, 340724, 358 89, 358103, 358104, 358250, 434 44, G09G 302
Patent
active
043152406
ABSTRACT:
The invention provides head-coupled area-of-interest visual display apparatus particularly for ground-based craft-flight simulators. The apparatus provides a stereoscopic pair of images for both a pilot and co-pilot, projected onto the inside of a part-spherical shell, which carries a concave retro-reflective screen and surrounds the two pilots. The display scenes cover an area of interest centered upon each pilot's line of view. A separate image generator is used for each pilot and may be of the computer generated image, laser-scanned model or closed-circuit television type. For stereoscopic viewing a modified image is provided for each eye of each pilot and for each pilot the two images are separately projected from points on a respective pilot helmet above the eye positions. Line scan apparatus is mounted in the pilots' cockpit; line image transmission is by two pairs of fibre optic light guide ribbons; and frame scan apparatus is mounted on the two pilots' helmets. A sensor measures head/helmet movements of each pilot to permit voluntary individual scanning of a wide angle of simulated view from the craft.
REFERENCES:
patent: 3614314 (1971-10-01), Rossire
patent: 3632181 (1972-01-01), Lee
patent: 3786180 (1974-01-01), Macovski
patent: 3851185 (1974-11-01), Hatsukano et al.
patent: 4028725 (1977-06-01), Lewis
patent: 4048653 (1977-09-01), Spooner
Conference: Agard Lecture Series No. 76, Electro-Optical Systems Shepherd, May 1975, pp. 4-1 to 4-13.
Groody James J.
Redifon Simulation Ltd.
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