Electro-optical inspection system and method

G - Physics – 01 – N

Patent

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G01N 21/90 (2006.01) H04N 7/18 (2006.01)

Patent

CA 2226454

A system and method for inspecting metal beverage containers (10) includes an ellipsoidal mirror (32) above the container (10). Above the ellipsoidal mirror (32) is an image splitting mirror (52) which presents two images to a first camera (42) and a second camera (62). The first camera (42) views the upper interior portion (15) of the container (10) and the second camera (62) views the flange (14) of the container (10). An image combiner (70) electro-optically combines the two images to produce a composite image of substantially the entire upper interior portion of the container (10) which is analyzed for defects. A third camera (142) is located at a separate location for viewing lower interior portion (12) of the container (10) with a computer (170) receiving the image from the third camera (142) and analyzing the image for defects.

Système et méthode d'inspection de récipients à boisson métalliques (10) comprenant un miroir ellipsoïdal (32) placé au-dessus du récipient (10). Un miroir de séparation d'images (52), présentant deux images à une première (42) et une seconde (62) caméras, est disposé au-dessus du miroir ellipsoïdal (32). La première caméra (42) permet de voir la partie intérieure supérieure (15) du récipient (10), et la seconde caméra (62) permet de voir le rebord (14) du récipient (10). Un combinateur d'images (70) combine de façon électro-optique les deux images, afin de produire une image composite couvrant essentiellement la totalité de la partie intérieure supérieure du récipient (10) qui est analysée pour déceler les défauts. Une troisième caméra (142), placée à un endroit distinct, permet de voir la partie intérieure inférieure (12) du récipient (10) à l'aide d'un ordinateur (170) recevant l'image de cette dernière caméra (142) et l'analysant afin de déceler les défauts.

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