Apparatus and method for inspection

Optics: measuring and testing – By configuration comparison – With comparison to master – desired shape – or reference voltage

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356237, G01B 1100, F21V 3000

Patent

active

051181932

ABSTRACT:
An apparatus and method for inspecting coatings on the surface of an object includes a light source of a ring light to uniformly light an object that is placed inside a diffusing view chamber. A video system measures the reflected light intensity from the surface of the object to determine if there are voids in the surface coating.

REFERENCES:
patent: 4578810 (1986-03-01), MacFarlane et al.
patent: 4677473 (1987-06-01), Okamoto et al.
patent: 4695157 (1987-09-01), Schoenbaum et al.

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