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We simplify lighting
design for you.

This is what we do:


We develop the world's leading software for lighting design. DIALux is free of charge and available in 25 languages.
Find out why lighting designers and luminaire manufacturers rely on DIALux. You can download the software here.


Our platform for freelance jobs in the lighting business. Busy lighting designers who need help with a project can find support among hundreds of professionals or register as a freelancer themselves. Free of charge and without obligation.


In our academy you will learn how to optimally plan light and control intelligent buildings. Of course, we also show you how to use our DIALux software quickly and efficiently. We offer seminars and online formats.


Light Lab

In our photometric lighting laboratory, we measure luminaires and lamps from and for manufacturers. We confirm lighting competence and determine all photometric quantities. In addition, we offer individual services and express measurements.

Light lab


We deal with many exciting topics around light and smart building.

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With Lightshift we have developed the platform for industry support and freelancers in the lighting business. Busy lighting designers can find support for their projects here. They only have to choose the right one from hundreds of freelancers. If the planner is still looking for the right product with particular specifications or needs help with lighting design or control, he or she can submit an anonymous request and receive individual offers from our industry partners. Of course, lighting designers can also register themselves as freelancers and offer their services worldwide. Registration is free of charge and non-binding.

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The Global Lighting Data Format is a new, modern and modular lighting data format. It not only includes ROLF and ULD, but also supports complex luminaires and sensors, and saves effort in creating and interpreting lighting data. Open and freely available. Developed by DIAL and RELUX.

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