ON-HEAD COMPONENT ALIGNMENT USING MULTIPLE AREA ARRAY IMAGE DETECTORS
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United States of America Patent
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N/A
Issued Date -
Nov 25, 2010
app pub date -
Apr 28, 2010
filing date -
May 6, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A sensor for sensing component offset and orientation when held on a nozzle of a pick and place machine is provided. The sensor includes a plurality of two-dimensional cameras, a backlight illuminator and a controller. Each camera has a field of view that includes a nozzle of the pick and place machine. The backlight illuminator is configured to direct illumination toward the plurality of two-dimensional cameras. The backlight illuminator is positioned on an opposite side of a nozzle from the plurality of two-dimensional cameras. The controller is coupled to the plurality of two-dimensional cameras and the backlight illuminator. The controller is configured to determine offset and orientation information of the component(s) based upon a plurality of backlit shadow images detected by the plurality of two-dimensional cameras. The controller provides the offset and orientation information to a controller of the pick and place machine.
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