Optics: measuring and testing – By polarized light examination – With light attenuation
Patent
1987-12-16
1990-03-13
Rosenberger, Richard A.
Optics: measuring and testing
By polarized light examination
With light attenuation
G01B 1130
Patent
active
049078887
ABSTRACT:
The invention concerns optical non-destructive test of materials using surface distortions detected by light which is reflected from the surface, retroreflected back to the surface and thence to form an image containing a greatly enhanced view of local deformation. In addition, the method is usable for determining surface characteristics of membranes and the like which can be influenced by sound and other wave energy from tested members and other sources and objects.
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Clarke Donald A.
Pryor Timothy R.
Reynolds Rodger L.
Diffracto Ltd.
Rosenberger Richard A.
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