Method and apparatus for measuring the surface of an object

Details Method and apparatus for measuring the surface of an object Method and apparatus for measuring the surface of an object

1979-02-09

1981-04-28

Corbin, John K.

Optics: measuring and testing

By polarized light examination

With light attenuation

250201, G01B 1124, G01J 120

Patent

active

042642086

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.

REFERENCES:
patent: 3385159 (1968-05-01), Bliss et al.
patent: 3606541 (1971-09-01), Sugano et al.
patent: 3721486 (1973-03-01), Bramley
patent: 3980890 (1976-09-01), Heckrodt et al.
patent: 4062633 (1977-12-01), Stapleton et al.
patent: 4074938 (1978-02-01), Taylor
patent: 4088408 (1978-05-01), Burcher et al.
Rosenberger, D., "Technische Anwendungen Des Lasers," Springer Verlag, pp. 59-61.

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