Method and apparatus for non-contact measurement of a gauge of a

Details Method and apparatus for non-contact measurement of a gauge of a Method and apparatus for non-contact measurement of a gauge of a

1974-01-08

1977-06-07

Corbin, John K.

Optics: measuring and testing

Angle measuring or angular axial alignment

With photodetection remote from measured angle

356167, 356159, G01B 1104

Patent

active

040279782

ABSTRACT:
There are provided a method and apparatus for noncontact measurement of a gauge of a high temperature material such as a red-hot steel slab, wherein the entire optical system including a light source, a filter and a detector is employed at wavelengths in the near-ultraviolet zone, preferably in the range 4,300 - 4,400 A, and a sampling mark corresponding to a reference projection point for an optical mark of wavelengths in the near-ultraviolet zone is established on the screen of a television receiver on which the optical mark is displayed in accordance with the output of a camera tube which receives the optical mark through a band-pass filter which transmits the wavelengths in the near-ultraviolet zone, whereby the light source and the camera tube are translated from the reference positions until the optical mark formed on a high temperature material to be measured coincides with the sampling mark so that the gauge of the high temperature material is measured in accordance with the distance covered by the parallel motion of the light source and the camera tube.

REFERENCES:
patent: 3016464 (1962-01-01), Bailey
patent: 3187185 (1965-06-01), Milnes
patent: 3612890 (1971-10-01), Cornyn et al.
patent: 3773422 (1973-11-01), Stavis et al.

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