My July column (“Calibrate camera coordinates and colors”) described techniques you can use to calibrate vision systems. In some cases, though, basic calibrations do not suffice. General-purpose ...

Finding the right set of lenses for your machine vision system can be a daunting task. Wiebke Marzahn of Sill Optics addresses some common concerns by breaking the puzzle down into a number of key ...

• In a telecentric lens, the rays which pass through the center of the aperture are parallel to the optical axis in front of or behind the system. •Backlighting via telecentric lenses can eliminate ...

When developing an inspection system for PV (photovoltaic) solar-wafer, solar-cell, and FPD (flat-panel display) products, developers need to choose the type of camera lens that is most appropriate ...

Telecentric lens have constant magnification when changing in objective distance. There is no perspective error when viewing 3D object. It is widely used in machine ...