System and method for inside can inspection

Details System and method for inside can inspection System and method for inside can inspection

2008-09-30

2008-09-30

Bella, Matthew C. (Department: 2624)

Image analysis

Applications

Manufacturing or product inspection

C356S241100

Reexamination Certificate

active

11035415

ABSTRACT:
A system and method for imaging an interior of a substantially cylindrical object are disclosed. In accordance with an embodiment of the present invention, a substantially cylindrical illuminator is positioned above an opening of a substantially cylindrical object to be imaged (e.g., a beverage can) in order to illuminate at least a portion of the interior surface of the object. A truncated conical mirror is positioned within an interior space of the illuminator to reflect an image of at least a portion of the interior surface of the object. A single camera is positioned above the illuminator and mirror to capture a single image of at least the interior surface of the object via light reflected directly from at least a portion of the interior surface of the object to the camera and from the mirror to the camera. The entire interior surface of the object is captured in the single image which may be analyzed for defects.

REFERENCES:
patent: 4249075 (1981-02-01), Lovalenti
patent: 5030823 (1991-07-01), Obdeijn
patent: 5699152 (1997-12-01), Fedor et al.
patent: 5774212 (1998-06-01), Corby, Jr.
patent: 5912776 (1999-06-01), Yaginuma

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