Method of measuring and displaying double refraction occurring i

Details Method of measuring and displaying double refraction occurring i Method of measuring and displaying double refraction occurring i

1987-09-25

1989-07-25

Evans, F. L.

Optics: measuring and testing

By polarized light examination

With polariscopes

356426, G01N 2123

Patent

active

048507105

ABSTRACT:
Disclosed is a method of measuring and displaying double refraction. In this method measuring light which has been subjected to double refraction passes through the material to be measured at a point of measurement thereof. A surface of the material to be measured is disposed in a manner that the same is located at right angles, or is inclined with respect to an optical axis of the measuring light. The material is rotated about the point of measurement thereof on a plane which is perpendicular to the optical axis of the measuring light. The data on the double refraction is displayed together with a plus or minus sign thereof as a function of the angle of rotation, in the form of polar coordinates corresponding to the angle of rotation.

REFERENCES:
patent: 4309110 (1982-01-01), Tumerman

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