H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/32, 340/124.
H04N 7/18 (2006.01) B07C 5/12 (2006.01) G01N 21/90 (2006.01)
Patent
CA 1057378
A B S T R A C T A method and apparatus for detecting defects in articles of manufacture such as glassware having letter- ing, mold marks and coloring is disclosed with the apparatus including a semi-diffused light source pos- itioned adjacent one side of and optically spaced from the article being inspected for illuminating the article. A video camera is positioned on the illuminating the article. the article from the diffused light source and scans the illuminated article in order to produce a video signal indicative of the difference in the refraction characteristics of the article to thereby indicate the presence or adsence of defects in the glassware sample. Circuitry is disclosed for discriminating between true defects and lettering, mold marks and coloring normally associated with the article. In the event there is a defect, an electrical processing circuit connected to the video camera and responsive to the video signal is provided for actuating a glassware rejection mechanism. Circuit means are also disclosed for inspecting round objects, such as the bottoms of round jars or glasses.
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