Method and apparatus for the optical measurement of an angle bet

Details Method and apparatus for the optical measurement of an angle bet Method and apparatus for the optical measurement of an angle bet

1992-01-16

1994-03-01

Hellner, Mark

Optics: measuring and testing

Angle measuring or angular axial alignment

With photodetection remote from measured angle

356141, G01B 1126

Patent

active

052912647

ABSTRACT:
In a method and apparatus for optically measuring an angle between the positions of components relative to each other, such as the wheels of a motor vehicle, in a vertical plane, light beams are directed along the sides of the angle to be measured. One light beam which is directed along one side of the angle is maintained in respect of its direction, while the light beam directed along the other side of the angle is deflected by the effect of the force of gravity.

REFERENCES:
patent: 2934825 (1960-05-01), Braybrook et al.
patent: 3723744 (1973-03-01), Lim et al.
patent: 4849620 (1989-07-01), Guerin et al.

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