LUMI-Q String

Photoluminescence inspection for solar strings

Improve string quality to optimize module efficiency

Photoluminescence (PL) inspection stimulates photon emission by illuminating cells with specific wavelengths, revealing critical information about material integrity and electrical properties. LUMI-Q String, ISRA VISION’s PL inspection system, seamlessly integrated into the stringer outlet, works without laser while guaranteeing comprehensive defect identification and classification.

LUMI-Q String solutions are powered by

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  • Detection of all electrical & material defects: Microcracks, soldering defects, insulated areas, scratches, stains, electrical cell mismatch
  • Seamless integration without additional footprint (retrofit-ready)
  • Laser free – no safety class
  • No contacting: less additional parts (wear) and cell damage risk
  • Detection of all geometrical defects: ribbon misalignment, ribbon kink/cell shifting, string properties/geometry
  • Fab data management with central recipe management and comprehensive data reporting
  • On-the-fly measurement
  • Even for wafer sizes >210 mm

Discover the full range of applications for LUMI-Q String


Unlock material integrity insights with LUMI-Q String by ISRA VISION. Our PL inspection system delivers precise defect identification seamlessly.
Large Production Line with Industrial Robot Arms at Modern Bright Factory. Solar Panels are being Assembled on Conveyor. Automated Manufacturing Facility

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