Device for determining the deviation of a target from a predeter

Details Device for determining the deviation of a target from a predeter Device for determining the deviation of a target from a predeter

1990-11-05

1992-06-23

Buczinski, Stephen C.

Optics: measuring and testing

Angle measuring or angular axial alignment

With photodetection remote from measured angle

89 4106, G01B 1126, F41G 132

Patent

active

051237377

ABSTRACT:
A device for determining the deviation of a target provided with a retrorector from a predetermined location in three spatial directions has a laser and a quadrant detector arranged next to it, which can be displaced jointly in the three spatial directions X, Y, Z. In this arrangement, the Z-setting is readjusted with the aid of a range measurement, so that the target is optimally illuminated. On the basis of the signal in the quadrant detector a displacement in the X-direction and Y-direction is effected in order to obtain a zero signal from the quadrant detector. The readjustments in the three directions are a measure of the deviation which can be displayed on a display via control electronics.

REFERENCES:
patent: 3888362 (1975-06-01), Fletcher et al.

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