The history of SIOS Meßtechnik GmbH begins in November 1991 with its spin-off from the Institute for Process Measurement and Sensor Technology at the Technical University of Ilmenau.

The founders of the company are Prof. Dr. Gerd Jäger, Dr. Walter Schott – at the same time the first and longtime managing director – Prof. Dr. Rainer Grünwald, Dr. Hans-Joachim Büchner and Dr. Detlef Heydenbluth, who contributed their extensive know-how as the basis for the company’s activities. The founders started with the goal of developing the potential of laser interferometry at the highest level of measurement technology for practical applications and thus making the world of measurement technology even more accurate and precise.

In the meantime, SIOS is not only one of the leading manufacturers of laser interferometric measurement systems, but also one of the most important European suppliers of stabilized He-Ne lasers as metrological light sources with highly stable wavelengths. In addition, SIOS is a supplier of the world’s most accurate positioning system with its NMM nanopositioning and nanometrology machine, making it the sole market leader.

“We will continue to focus our corporate activities in the future on transferring scientific results combined with technical know-how into innovative products with the highest quality standards. Of course, without losing sight of the greatest possible benefit for our customers.”

assures Dr. Denis Dontsov, new managing director of SIOS Meßtechnik GmbH since 2016.

“It is important to us that we maintain our willingness to innovate and continue to face increasing challenges in precision measurement technology. However, we can only meet these demands together with our employees, our partners, customers and suppliers. Today, we would like to thank them as well as the SIOS founders and scientific companions for 30 successful years. Only together can upcoming tasks be solved and the things of this world that are invisible to the eye be measured ever more accurately and precisely, right down to the subnanometer range.”

On the occasion of our 30th anniversary, we received greetings and congratulations. We would like to thank you very much for this.

IHK South Thuringia:

Greeting by Dr. Ralf Pieterwas, Chief Executive Officer of IHK South Thuringia

Innovation for the region.pdf

Photo: © Michael Reichel / arifoto.de

aixACCT Systems, Aachen:

SIOS and measurement systems from aixACCT Systems have been closely linked for almost 20 years.

We have been at home in the world of ferro and piezoelectric materials since 1999 and have become the technology leader in this field. In doing so, we rely almost exclusively on SIOS laser interferometers. During this time, almost 200 systems have been integrated.

We have always been convinced not only by the performance capabilities of the systems, but also by the cooperative partnership. Similar to SIOS, we often move at the limits of technical feasibility in the realization of our projects, therefore it is essential to be able to rely on a highly competent and always committed team at SIOS for their implementation.

The whole team of aixACCT Systems wishes Sios Messtechnik GmbH all the best for their 30th anniversary and we are looking forward to many more years of close and productive cooperation.


PTB Physikalische-Technische Bundesanstalt, Braunschweig

We would like to thank you very much for the constructive and committed cooperation with the colleagues at SIOS Meßtechnik GmbH over the past 30 years and hope that the cooperation can be continued in the same way in the future.

Open PTB greeting





Very best wishes to our friends at SIOS for your 30th anniversary.

From past and present members of Armstrong Optical it has been our pleasure to work with you and we are very grateful for your continuing support.

Also looking forward to future co-operation in the years ahead. 


Switzerland: DYNEOS AG





SINGAPORE: AMA Automated Micron Assembly Pte. Ltd.





Congratulations on your 30th anniversary!!

We are very happy to hear that and this anniversary is in recognition of your hard work, you deserve it!

We hope for your continued success and all of your happiness in the future as well.


China: Tianjin MicroNano Manufacturing Tech Co., Ltd.


Taiwan: Dachin Technology Co., Ltd.

Bless SIOS  Meßtechnik GmbH, 30th anniversary

Development is getting better and better!
The accuracy is getting higher and higher!
The market is getting bigger and bigger!

Best Regards,
Jacky Chiang


INDIA: Dynotech Instruments Pvt. Lfd.

Our association with SIOS is more than a decade. We enjoyed working with team SIOS and got good success in the Indian Market. Peter Grundschok travelled to India with the system and together we travelled to various customers to demonstrate the tool. By seeing the tool and looking at the live demonstration, customers got confidence and placed their orders with us. We also created some OEM Accounts. 

Some of the customers are:

  1. IGCAR – Kalpakkam
  2. CMERI – Durgapur
  3. Octagon – Pune
  4. Aditya Engineering – Pune
  5. NPL – Delhi   etc…

Presently also we are working on some good projects with SIOS Team and hoping for a continued success for both of us.
SIOS Team is highly technical friendly & provide excellent Customer Support.
We would like to wish all the very best to SIOS for its future endeavour



Russia: New Technologies Ltd
«New Technologies» has been cooperating with «SIOS Messtechnik» since 2016. 
I have visited you several times, know your products, team and partners of the international distribution network.
I highly appreciate the technical excellence of your products, the competence and friendliness of your specialists. 
I am impressed with the charm and competence of your director, Denis Dontsov, 
but I understand that this is not only his talent, but also the focused talents and efforts of all SIOS team.
In Russia there are many qualified technical specialists in a wide variety of fields. 
And I really hope that in Moscow it will be possible to create an extended representative office of SIOS. 
This allows you to visually demonstrate your devices in operation and jointly create new applications.
I congratulate the SIOS team and partners on their 30th anniversary and wish them new technical and commercial heights!

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