Optics: measuring and testing – By configuration comparison – With object being compared and scale superimposed
Patent
1994-02-22
1995-01-31
Evans, F. L.
Optics: measuring and testing
By configuration comparison
With object being compared and scale superimposed
356237, 348 92, 348125, 348131, G01N 2190
Patent
active
053862937
ABSTRACT:
A video seam inspection device includes a video imaging device, a support for a container along an optical axis of the video imaging device and independent light means for illuminating a seam on the container. The two light means include a side light source and a direct light source. The direct light source may be used to transmit light through a ring illuminator which reflects light off a mirror located along the optical axis of the video imaging device. A side light source transmits light to a light transmission means which focuses the light towards the seam of the container at an angle different from the angle of light from the ring illuminator. A can having a cut-out section of the bottom is placed on the support such that the cross-section of the can is exposed and illuminated by each of the light means. The video imaging device then transmits an image of the seam to a display device.
REFERENCES:
patent: 5017795 (1991-05-01), Dower et al.
patent: 5104226 (1992-04-01), Eble et al.
patent: 5260766 (1993-11-01), Armitage
Barnard Ronald G.
Creitz William H.
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