Apparatus for optically inspecting object having reflecting surf

Details Apparatus for optically inspecting object having reflecting surf Apparatus for optically inspecting object having reflecting surf

1987-07-10

1988-03-22

Evans, F. L.

Optics: measuring and testing

Inspection of flaws or impurities

Having predetermined light transmission regions

356241, 356446, G01N 2188

Patent

active

047324740

ABSTRACT:
Apparatus for optically inspecting an object having a reflecting surface includes an irradiating device for emitting illuminating light; a shield member for reflecting the illuminating light to irradiate the object, and a light-receiving device for receiving an image of the object irradiated through the reflection of the illuminating light by the shield member. The shield member covers an extent of a field of vision of the light-receiving device through the reflection of the reflecting surface.

REFERENCES:
patent: 2471750 (1949-05-01), Hunter
patent: 4465374 (1984-08-01), Pryor et al.
patent: 4629319 (1986-12-01), Clarke et al.

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