In silent memory of Dr. Michael Fuß

With deep sorrow, we mourn the loss of our esteemed Managing Director, Dr. Michael Fuß.

His commitment, his vision, and above all his warm personality inspired us and will always remain in our memories.

We will continue to run MBJ in the spirit of Dr. Michael Fuß—with the same passion, courage, and vision that he showed us.

MBJ wishes you a Merry Christmas and a Happy New Year!

We will be closed for the holidays from 22.12.2025-01.01.2026.

Our office will be closed during this time. We will be available again as usual starting 02.01.2026.

NEW! The MBJ Quickcheck

The fastest luminescence test of installed solar modules ever.

- One-person operation in daylight

- No intervention in the electrical installation

- Live image directly on the VR headset

NEW! The MBJ Sunlike Lab

The perfect solution for the laboratory:

Sun simulator, EL system and thermo unit in one system.

- Tandem-compatible technology with continuous light

- Adjustable LED spectrum

- Simple and unique software

Cell development made easy:

The MBJ Steady state sun simulator is designed for the characterization of small modules during the development of new cell technologies such as perovskites in the laboratory.

Recycling of PV modules made easy:

Recycling is important and necessary in order to use our world's resources responsibly.

The MBJ Module Tester checks the most important characteristics of old modules for reuse.

MBJ Solutions Bifazialer Sonnensimulator Innenansicht

A+A+A+ Sun Simulators with innovative LED technology!

Our LED Sun Simulator with TÜV Rheinland certified LED light source according to IEC 60904-9 Ed.3 inspects modules up to a size of 1400 x 2750 mm.

The long lifetime, a stable light source over the full lifetime and the long pulse duration are a guarantee for better measurement results at significantly lower costs.

MBJ Solutions News

05/22/2025 Read more

07/04/2024 Read more

[Translate to english:] MBJ Light soaking unit

06/10/2024 Read more

03/25/2024 Read more

NEW: MBJ Quickcheck

The fastest luminescence test of installed solar modules ever

The MBJ Quickcheck is the ideal solution for quickly obtaining an overview of the condition of PV modules after installation, after a storm, or in the event of problems.

The relatively small, lightweight, and battery-operated system can be easily operated by one person.The inspection is ideally carried out during the day.

Unlike electroluminescence systems, no intervention in the electrical installation or shutdown of the system is required.

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 450 electroluminescent test systems installed worldwide, MBJ is the market leader in Europe, offering the right solution for all requirements.

Innovative LED-Technologie

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.

Innovation

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

Worldwide experience

Rely on our experience from more than 450 installed inspection systems worldwide.