This page shows all inspection solutions for modules

Large Production Line with Industrial Robot Arms at Modern Bright Factory. Solar Panels are being Assembled on Conveyor. Automated Manufacturing Facility

Inspection solutions for solar modules

  • Increased output: Achieve maximum yield with fully exploited production potential
  • Saved resources: Optimum use of material, equipment, and engineering times
  • Maximum process transparency: Anticipate process weaknesses at the earliest possible


Reduce your production costs and make sure that the modules you produce are of outstanding quality.

To achieve this outstanding quality, the raw materials have to be right. Our inspection solutions for incoming cells, thin film, foil, or solar glass detect the smallest defects and faulty material. Subsequent removal saves valuable production capacity.

Cloud-based data management reduces set-up workload and significantly accelerates commissioning and recipe adjustments. 

Our modules solutions are powered by our brand:

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Incoming cell inspection & classification

final cell sorting

Identifying faulty cells before the stringer saves valuable module production capacity. CELL-Q identifies faulty cells in time and monitors their performance class. Damage caused by transporting and handling can be claimed and rectified.


Save money: Reclaim poor cells to the supplier

Achieve homogenous modules regarding color and performance

Lowest overkill and underkill rates

Features, typical defects and technical data


  • Incoming cell control before stringer

  • Contact Grid inspection: detection of print defects and monitoring of printing position

  • Color sorting:  detection of color and coating defects and cell sorting by color classes

  • Detection of other surface and contour defects 

  • Simple recipe exchange / Recipe Copy-Exact

Typical defects

  • Color defects: discolorations, inhomogeneities

  • Surface defects: stains, fingerprints, scratches

  • Grid defects: interruptions, thinnings, slubs, nodes, stains, smearings, mispositioning

Technical data

  • Even for wafer sizes over 210 mm

  • Recipe Copy-Exact

  • LightDome Technology for the highest isotropy and homogeneity

  • Multiview Technology for the highest sensitivity in surface defect detection 

  • Image analysis on cumulative defect overlay image

  • Matrix camera technology for best metrology

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PL String Inspection

Col q pl string inspection modules

Strings are the backbone of solar modules, and ensuring their quality is paramount. Photoluminescence (PL) inspection for the stringer ensures that only high-quality strings make it into the final assembly.

This cutting-edge technique employs the power of light to uncover imperfections and elevate the quality of photovoltaic strings.

At its core, PL inspection involves illuminating the cells with specific wavelengths of light, stimulating the emission of photons. This emitted light, when carefully analyzed, provides critical information about the string's material integrity and electrical characteristics. ISRA VISION’s PL inspection systems run laser-free, which reduces safety requirements.


Quickly identify stringing problems

Integration directly into stringer outlet

No separate EL inspection station needed

Insection on-the-fly during string feedout

Features, typical defects and technical data


  • Laser-free technology (patend pending)

  • No laser safety – low safety measures

  • PL Inspection of Strings, on-the-fly directly in stringer feedout

  • Detection of typical stringing defects;

Typical defects

  • Microcracks and Breakage

  • Contamination and Scratches

  • Tabbing alignment

  • String shunts

Technical data

  • Even for wafer sizes over 210 mm

  • Recipe Copy-Exact

  • On-the-fly measurement

  • 500 mm/s @ 3k

  • 900 mms @ 1k

  • Inspection time < 0.6 sec

  • Throughput sufficient for all stringers currently available on the market

Data Analytics / CPV

Connected PV web 16 9

Transparency increases efficiency: Visualize and analyze process data in real-time. All our inspection systems provide data for yield evaluation and comparison to anticipate and counteract process deviations.


Maximum process transparency: Live view production status from first day on

Fast identification of underperforming processes: Reach higher yield by fine-tuning processes immediately

Customer service & training


For the efficient and future-proof operation of your production systems our highly qualified service teams support you globally in all matters. We provide the implementation, maintenance and servicing as well as the analysis and optimization of your systems - quickly, reliably, 24/7. 

Visit our service center and request your customized service solution. 

Furthermore, learn in the ISRA VISION Academy how our competent trainers always keep your employees up to date with the latest knowledge so that system operators, product engineers and quality managers become real inspection experts.

Visit our ISRA VISION Academy and book your individual and scalable trainings.

Contact us

Tom Thieme

Business Unit Sales Manager

Richard-Willstätter-Straße 14
12489 , Berlin