Method and apparatus for detecting defects in a surface regardle

Details Method and apparatus for detecting defects in a surface regardle Method and apparatus for detecting defects in a surface regardle

1974-12-02

1976-10-05

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

250563, 356200, 356209, 356210, 356237, G01N 2100, G01N 2116

Patent

active

039841898

ABSTRACT:
A method and apparatus for detecting a flaw, color shading, or the like on the surface of a running object and for producing an electrical signal in response thereto by optically scanning such surface, characterized in that there is provided not only a photoelectric element for receiving the component of light regularly reflected from the surface of the running object, but also means for receiving the component of light irregularly reflected from the surface thereof, thereby to detect all of the defects that may exist on the surface of such object regardless of the surface finish.

REFERENCES:
patent: 2315282 (1943-03-01), Snow
patent: 3176306 (1965-03-01), Burns
patent: 3574469 (1971-04-01), Emerson
patent: 3591291 (1971-07-01), Greer, et al.
patent: 3667846 (1972-06-01), Nater et al.
patent: 3834822 (1974-09-01), Stapleton et al.

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