• Proven EL technology for the PV production process!

    With more than 300 sold electroluminescence inspection systems is MBJ one of the leading suppliers for EL systems in the PV industry.

  • Innovative LED Technology for A+A+A+ sun simulator!

    LED is the future for sun simulators! The long life time of the LED, the stable light source over the lifetime and the long puls length is the base for better measuring results and for less operation costs.

  • Solutions to meet the needs!

    Our electroluminescence test systems are adaptable to your requirements. Whether higher speed or new cell formats such as half cut cells, we always have the right solution for you.

  • Proven EL system meets innovative LED technology!

    Our new Backend Solution combines the TÜV certified tripple A+ LED sun simulator, a hipot and grounding test and our proven EL technology.

MBJ Solutions News

MBJ Group new company building in Ahrensburg Germany

The MBJ Group has moved to Ahrensburg

Read more

MBJ Group receives ISO 9001 certification

Read more

MBJ Solutions GmbH introduces 4th Generation LED Sun Simulator at the InterSolar in Munich

Read more

MBJ Solutions GmbH and MBJ Services GmbH exhibiting at the Intersolar in Bangalore India

Read more

Proven Electroluminescence Technology

With the help of electroluminescence images critical defects such as microcracks and soldering defects are made visible in PV modules . This test improves overall product quality and it optimizes the production process. Electroluminescence testing is a standard in todays module manufacturing and indispensable in production. These systems are usually used before lamination as process control and at the end of the production line as output control for all modules produced.

The requirements for the electroluminescence test have steadily increased in the last years. Today, as example, cycle times of less than 20 sec are required. An automatic evaluation with a high-resolution system is therefore the standard. With more than 300 electroluminescent test systems installed worldwide, MBJ is the market leader in Europe, offering the right solution for all requirements.

Innovative LED technology

LED technology is the future. With our LED flashers a flash duration of up to 200ms can be realized without any problems, which is indispensable for new module concepts. The LEDs are designed for several million measurements, under normal conditions, replacement of the LEDs is no longer necessary. The light intensity and the spectrum also remain stable over the entire product life cycle.

The long life of the LEDs also leads to an immense cost savings compared to a xenon flasher. Another advantage of LED technology is that the individual LEDs or the groups of LEDs can be controlled very precisely. This control allows a nearly constant luminosity over the entire flash duration. The very good stability of the light source leads to an excellent reproducibility of the measurement results. Are you interested? Find out more about our LED solar simulators.

Why you can trust MBJ

Customer focus

The customer and his requirements are at the center of our thoughts and actions.

Individual solutions

We love technical challenges. Customized adjustments are part of our business. Contact us.


We continuously improve our products and adapt them to the demands of the market.

Worldwide experience

Rely on our experience from more than 350 installed inspection systems worldwide.