Optics: measuring and testing – Angle measuring or angular axial alignment – With photodetection remote from measured angle
Patent
1988-08-29
1990-10-23
Buczinski, Stephen C.
Optics: measuring and testing
Angle measuring or angular axial alignment
With photodetection remote from measured angle
356 5, 356141, G01B 1126, G01C 100, G01C 308
Patent
active
049647229
ABSTRACT:
A method for determining the configuration and location of an object with respect to an X, Y, X coordinate frame. The exterior surface of the sobject is equipped with a plurality of retroreflector surfaces capable of reflecting range measuring laser beams back to their sources. Three lasers, "A", "B", and "C", are located orthogonally to one another to define the reference coordinate frame. The lasers are used to determine the range distance to each of the retroreflector surface within the coordinate frame. The space defined by the coordinate frame is divided into four quadrants and the location of the retroreflector within a particular quadrant determines the value of variables qx and qy to be used in association therewith. Then, for each retroreflector.sub.n, the measured ranges from the laser to the retroreflector are designated as RA.sub.n, from laser A, RB.sub.n from laser B and RC.sub.n from laser C. Finally the positional values of each retroreflector are calculated according to geometric relationships, whereby the configuration of the object within the coordinate frame is determined.
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Buczinski Stephen C.
Jones Thomas H.
Manning John R.
The United States of America as represented by the Administrator
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