Apparatus for detecting irregularities in the surfaces of materi

Details Apparatus for detecting irregularities in the surfaces of materi Apparatus for detecting irregularities in the surfaces of materi

1975-05-13

1977-03-22

Bauer, Edward S.

Optics: measuring and testing

Inspection of flaws or impurities

Bore inspection

250572, 350 7, G01N 2132

Patent

active

040133672

ABSTRACT:
An apparatus for detecting surface irregularities in a moving web is disclosed. The apparatus includes a laser light source, the output beam of which is divided into a plurality of zone scanning beams by an optical network. The plural beams are reflected by a rotating scanner to a series of reflecting surfaces, each oriented at a different angle to stagger the scanning beams. The staggered beams are again reflected from two groups of reflecting surfaces inclined in opposite directions relative to one another for separating the scanning zones covered by the scanning beams.

REFERENCES:
patent: 2272097 (1942-02-01), Smith
patent: 3060319 (1962-10-01), Greunke
patent: 3307968 (1967-03-01), Schnedler
patent: 3410643 (1968-11-01), Jorgensen
patent: 3509349 (1970-04-01), Molines et al.
patent: 3618063 (1971-11-01), Johnson
patent: 3893079 (1975-07-01), Shepard et al.

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