Television – Special applications – Hazardous or inaccessible
Reexamination Certificate
2007-03-06
2009-11-17
An, Shawn (Department: 2621)
Television
Special applications
Hazardous or inaccessible
C348S064000, C348S082000, C382S152000, C382S141000, C356S241100, C356S237600
Reexamination Certificate
active
07619646
ABSTRACT:
An optical system is effective to illuminate and scan an interior wall of an object having an interior bore, such as a stent. The system includes a light source, an object support having a light conducting portion, an image taking lens, and a line scan camera. The interior bore and the light conducting portion of the object support are in axial alignment with a center optical axis of the image taking lens. A drive mechanism engages the object without impacting the axial alignment. Various aspect of this optical system include a rotating wheel or transparent plate as the drive mechanism. The object support may be an opaque rod having a light conducting portion or a transparent rod. Electronics associated with this optical system include a rotary encoder engaging the drive system to drive an electric circuit capable of triggering the line scan camera in response to rotation of the object, thereby building a line by line image of the interior bore and the line scan camera connected to a computer-based imaging system effective to identify cosmetic and functional manufacturing defects.
REFERENCES:
patent: 6606403 (2003-08-01), Freifeld
patent: 6697102 (2004-02-01), Olsson et al.
patent: 7355700 (2008-04-01), Kreckel et al.
patent: 20 2005 013 876 (2006-01-01), None
patent: 2001-066521 (2001-03-01), None
patent: 2001-070455 (2001-03-01), None
patent: 2001-074433 (2001-03-01), None
Laird, “Optical Scanning Tool Performs 100% Stent Inspection,”Medical Product Manufacturing News, Nov. 2003.
Burnett John B.
Freifeld Daniel
An Shawn
Rosenblatt Gregory S.
Visicon Inspection Technologies LLC
Wiggin and Dana LLP
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