Tuesday, October 30, 2012

DEAD FLAT Vacuum conveyor #5

Inspection also makes use of dead flat surface.
Vacuum conveyor keeps the same distance between measuring tools and objects on a belt by its flat surface.  Laser-type measuring machines and camera needs precise clearance from objects to capture their real figure.  Substrates, wafers, flat sheets, etc are inspected precisely and  continuously.
The picture below measures vertical fluctuations of the belt by laser.