Computer graphics processing and selective visual display system – Image superposition by optical means
Patent
1995-06-06
1997-07-08
Chow, Dennis
Computer graphics processing and selective visual display system
Image superposition by optical means
359630, 340980, G09G 500
Patent
active
056466390
ABSTRACT:
A display producing a display image in a vehicle width mark form and an optical path changing device directing the display image to a windshield are mounted on a base. The base is driven by an arc drive portion along an arcuate path with an arc center which is an intersection of a first imaginary sight line and a second imaginary sight line. The imaginary sight lines are reflections of a first and second actual sight lines in which a driver looks at the image position. Since the arc center conjugates the image position, when the display and the optical path changing device move along the arcuate path, the display image projecting on the windshield changes, and therefore, the image does not move up and down from the ground. Further, when a distance between the display and the optical path changing device changes, since the base moves along the arcuate path, the display distance of the image changes and the image moves along the surface of the ground.
REFERENCES:
patent: 4711544 (1987-12-01), Iino et al.
patent: 4831366 (1989-05-01), Iino
Chow Dennis
Nippondenso Co. Ltd.
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