Measuring device for determining relative position between two i

Details Measuring device for determining relative position between two i Measuring device for determining relative position between two i

1984-12-27

1987-12-29

Rosenberger, R. A.

Optics: measuring and testing

By polarized light examination

With light attenuation

356400, G01B 1114

Patent

active

047157143

ABSTRACT:
The measuring device is used for determining a relative position between a first item and a second item or the image thereof. The items are displaceable or rotatable relative to one another. The first item has a code carrier, which is arranged along a path. The code carrier is provided with a code pattern at right angles to the path. The second item has a code reader oriented on the code carrier path. A computer is connected downstream of the code reader and has means for quantifying the signal supplied by the code reader and for comparing with a stored code image of the code carrier, as well as for calculating the relative position from the comparison result. This measure permits automatic reading of the position, accompanied by a very high measuring accuracy. The measured result can be digitally displayed and, if required, can be directly stored on a data carrier and/or can be further processed in a computer.

REFERENCES:
patent: 2896327 (1959-07-01), Thomann
patent: 3002419 (1957-11-01), Vyce
patent: 4029415 (1977-06-01), Johnson
patent: 4297033 (1981-10-01), Nelle
patent: 4384204 (1983-07-01), Tamaki et al.
patent: 4461575 (1984-07-01), Miller, Jr. et al.
patent: 4488050 (1984-12-01), Iwafune

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