Method and apparatus for calibrating a non-contact gauging senso

Details Method and apparatus for calibrating a non-contact gauging senso Method and apparatus for calibrating a non-contact gauging senso

1998-05-04

2000-10-17

Wachsman, Hal

Data processing: measuring, calibrating, or testing

Calibration or correction system

Position measurement

702 94, 702104, 35613903, 3561523, G01C 302

Patent

active

061345075

ABSTRACT:
The laser tracker is positioned at a vantage point to detect and calibrate its reference frame to the external reference frame demarcated by light-reflecting retro reflector. A tetrahedron framework with retro reflector mounted on one of the vertices serves as a reference target that is placed in front of the non-contact sensor to be calibrated. The laser tracker reads and calibrates the position of the retro reflector (and thus the tetrahedron) while the structured light of the non-contact sensor is projected onto the framework of the reference target. The structured light intersects with and reflects from the reference target, providing the non-contact sensor with positional and orientation data. These data are correlated to map the coordinate system of the non-contact sensor to the coordinate system of the external reference frame.

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