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LEJ is your provider of high-performance Illumination as well as Power Electronic solutions in the fields of Microscopy, Analytics, Semiconductor, Industry as well as Medical Technology.

Besides its comprehensive portfolio of brand products LEJ offers the highest degree of flexibility and speed to bring customer-/application-specific products to the market. World-known OEMs count on LEJ as their system provider for e.g. laser and system power supplies, LED high performance controller as well as their partner for contract assembly of complex opto-mechanical and opto-electronical sub-assemblies and systems.

Product innovations


Discover our product developments and innovations ...

Photonics and Machine Vision - Web Pitch

On July 22, 2020 we had the opportunity to participate in the "Photonics and Machine Vision - Web Pitch07/2020" of SpectroNet.
Our Dr. Jörg Wagner speaks in the 15 minute presentation about how to support your machine vision application with high quality illumination systems and power supplies from LEJ.
Under the following link you can watch the web pitch afterwards:

Photonics and Machine Vision - Web Pitch




In view of the worldwide spread of the COVID-19 virus and the effects of the countermeasures, we would like to inform you about the situation at LEJ.

The health of our employees, partners and customers is our highest priority and so we are also taking active measures to prevent the spread of the COVID-19 virus.

We have stopped all business trips and customer visits and we only allow our symptom-free employees who have not been in a risk area and have no such contact persons access to the company building.

For the time being, the manufacturing and warehousing processes will remain unchanged and we will produce and supply our customers as planned. However, based on current information, it is expected that lead times will increase and we will probably experience delays in our development projects as well. Currently, our supply chain is secured for the existing orders and measures have been taken to limit potential disruptions. However, as we all know, the situation can change quickly and drastically.

LEJ is in a healthy financial position and suppliers do not need to worry about late payments.


We will keep you informed of any news or changes in the current situation by email and through our social media channels.

As always, we welcome and appreciate your questions, ideas and feedback.

In the meantime, we wish you and your family strength in these difficult times.

Stay safe and healthy! 

Your Team of Leistungselekronik Jena.