Method and apparatus for measuring the surface of an object
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United States of America Patent
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Apr 28, 1981
Issued Date -
N/A
app pub date -
Feb 9, 1979
filing date -
Oct 25, 1978
priority date (Note) -
Expired
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Abstract
An optical system focuses a laser beam emanating from a laser onto a surface of an object, such as a circumferential surface of the object to be measured. The light beam is reflected from the object, so as to form a generally focused light spot; the intensity of the light spot, which depends on the distance of the surface from the optical system, is measured, and the measurement results are displayed and/or utilized for controlling the dimensions of the object, if the object is an elongated article, and is continuously produced, generally in a direction transverse to its cross-section.
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