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EL image of a solar cell with a micro-crack

EL inspection systems by pi4 are perfect tools for process optimization and quality assurance at every production step. Our products in this area range from fully automatic high-speed in-line systems to manual systems that can be transported in a car boot.



  • EL images of high resolution
  • fully automatic error detection and evaluation
  • shortest cycle times
  • reliable machine concepts
  • easy-to-operate software
  • MES and SAP link