Method of and apparatus for inspection of coatings on surfaces

Details Method of and apparatus for inspection of coatings on surfaces Method of and apparatus for inspection of coatings on surfaces

1982-09-29

1985-09-03

Willis, Davis L.

Optics: measuring and testing

By polarized light examination

With polariscopes

356369, 356237, G01N 2121

Patent

active

045389128

ABSTRACT:
A method of and apparatus for inspecting reflective coatings on a substrate using a polaroid filter to view light reflected from the coating to make variations in coating thickness over a large coated area visible.

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patent: 4015127 (1977-03-01), Sharkins
patent: 4017188 (1977-04-01), Sawatari
Andrews, Optics of the Electromagnetic Spectrum, Prentice-Hall, Inc., Englewood Cliffs, NJ, pp. 392-396, 1960.
Bishop, Jr., "Surface Layer of Sheet Glass", J. Am. Ceram. Soc., vol. 27, No. 5, pp. 145-148, May 1944.

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