Method and apparatus for detection of inclusions in glass articl

Details Method and apparatus for detection of inclusions in glass articl Method and apparatus for detection of inclusions in glass articl

1977-07-01

1979-01-30

Corbin, John K.

Optics: measuring and testing

Inspection of flaws or impurities

Transparent or translucent material

250224, 356398, G01N 2132

Patent

active

041369610

ABSTRACT:
An automatic system for scanning a generally cylindrical member with a thin beam of light. Detectors are provided for sensing interruption or scattering of the light beam by inclusions within the member. When an inclusion is detected transverse scanning stops and the beam is fixed along a chord of the cylinder. The cylinder is then rotated to cause the inclusion to intercept the chordal beam, and the information thus generated is used to identify the type and position of inclusions within the blank.

REFERENCES:
patent: 3586444 (1971-06-01), Sproul et al.
patent: 3639067 (1972-02-01), Stephens
patent: 3989380 (1976-11-01), Spitz

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