Aligning

Details Aligning Aligning

G - Physics

01

B

33/130, 350/32

G01B 5/24 (2006.01) G03F 9/00 (2006.01) H05K 3/12 (2006.01) H05K 13/04 (2006.01)

Patent

CA 1320828

- 23 - ABSTRACT OF THE DISCLOSURE An aligning system includes an object to be acted upon at predetermined locations, such as a circuit board to receive solder paste. There is a device, such as a stencil, characterized by the pattern for acting upon the object. A video probe is arranged to look at both the device and the object for providing image signals representative of both. A comparator compares the image signals to provide an error signal representative of misalignment between the device and object. A positioner responsive to the error signal relatively positions the device and object to reduce the error. An operator causes the device to operate upon the object at the predetermined locations.

596903

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