Arcuate optical scanning for N-S movement in a map display navig

Details Arcuate optical scanning for N-S movement in a map display navig Arcuate optical scanning for N-S movement in a map display navig

1975-06-19

1976-12-14

Haroian, Harry N.

Optics: image projectors

Target, map or navigation projection

With or for vehicle

353 87, 353 78, G03B 2100

Patent

active

039972550

ABSTRACT:
A navigational apparatus for use in a piloted craft in which a map is displayed pictorially on a screen, representative of the terrain over which the craft is passing. The apparatus employs a moving film strip, a light source and known means to focus and project an image onto the screen. The light source is adapted for arcuate movement across the width of the film synchronously with an optical scanning device placed between the film and the screen and also adapted for arcuate movement so that N-S scanning of an individual film frame may be effected. E-W scanning of the film frame is effected by advancing the film in a suitable film transport. The film transport mechanism is suitably programmed to take into account a correction factor for the arcuate displacement of the N-S scanning device.

REFERENCES:
patent: 2472098 (1949-06-01), Duncan
patent: 3508821 (1970-04-01), Ujhelyi

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