Process and device for detecting inclusions in crystals

Details Process and device for detecting inclusions in crystals Process and device for detecting inclusions in crystals

1977-05-09

1979-07-24

Evans, F. L.

Optics: measuring and testing

Crystal or gem examination

356239, G01N 2132

Patent

active

041621255

ABSTRACT:
Inclusion in crystals, in particular in single crystals of gallium-gadolinium garnet, are detected by passing a beam e.g. a laser beam into the crystal perpendicular to the long axis of the crystal. The crystal can be rotated and the light scattered by the inclusions in the crystal are recorded photographically at right angles to the illuminating beam which is made to scan the rod shaped crystal along its long axis.

REFERENCES:
patent: 3586444 (1971-06-01), Sproul et al.
patent: 3867032 (1975-02-01), Bruck
patent: 4021217 (1977-05-01), Bondybey et al.

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