Machine for inspecting the bottom of glass containers

Details Machine for inspecting the bottom of glass containers Machine for inspecting the bottom of glass containers

1993-06-08

1994-09-20

Hille, Rolf

Optics: measuring and testing

Inspection of flaws or impurities

Containers or enclosures

356428, 250223B, G01N 2190, G01N 904

Patent

active

053494350

ABSTRACT:
A machine for inspecting the bottom of a glass container having an opening at the top thereof comprising means for delivering a glass container to an inspection station, the inspection station including a two dimensional camera having an imaging surface for viewing the bottom of the glass container through the opening of the bottle, a light source for directing light through the bottom of the container towards the imaging surface, a computer for evaluating the viewed bottom imaged on the imaging surface, and means for reducing the dynamic brightness range for the viewed bottom image including a spatial modulator located between the imaging surface and the light source and the computer complimenting and transferring the image of the glass container on the imaging surface to the spatial light modulator.

REFERENCES:
patent: 4448526 (1984-05-01), Miyazawa
patent: 4943713 (1990-07-01), Yoshida
patent: 5095204 (1992-03-01), Novini
patent: 5216239 (1993-06-01), Yoshida
patent: 5280170 (1994-01-01), Baldwin

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