Automatic optical inspection (AOI)

The automatic optical inspection (AOI) is an optical structure test for PCBs with which mechanically defective components, pressing errors, application errors and solder defects are detected.
 
After reflow (SMD) and wave soldering (THT), the assemblies are subjected to an automatic optical inspection.
Because these process steps are very complex, a variety of possible causes can lead to production errors and a failure of the electronic assembly. For this reason, the components are optically inspected in addition.
 
With our stand-alone solution of the AOI system, we provide an optical inspection of the following processing steps:
 

  • Solder paste inspection of the SMD process for production release and monitoring intervals of the solder deposit.
  • Placement control of the SMD process for production release before to reflow.
  • Soldering and placement control of the SMD process after the reflow soldering process.
  • Placement control of the THT process for production release before wave soldering.
  • Soldering and placement control of the THT process after the wave soldering process.