Wielandts UPMT is a young innovative high tech company that was founded in September 2013 by Marc Wielandts. The mission of the company is to develop and commercialize original precision technologies and processes that make the difference for niche markets. Wielandts UPMT has developed a PCT patent pending technology called DPI (Dynamic Part Indexing) that is a real breakthrough solution for the production of lens arrays. This technology was first introduced to the market in October 2015 during the SPIE OPTIFAB expo and conference in Rochester.

Since then Wielandts UPMT has manufactured lens arrays to customer specifications for diverse applications: LED lighting mould insets, MLA masters for optical structure replication processes, IR lens batch machining and ophthalmic wafer optics. Wielandts UPMT believes that DPI will completely change the way of machining and conceiving lens arrays in the next years. Monolithic multi cavity moulds shall be preferred over moulds using inserts to reduce the costs while increasing the accuracy. The technology perfectly fits into the evolution to optimise the production processes by making them ever simpler and more efficient.

To provide a complete service to its customers Wielandts UPMT has invested in its own state of the art Ultra Precision machine tool and metrology equipment. This equipment is operated in a thermally stable and vibration free clean room environment. Thanks to more than ten years of experience in ultra precision machining, Wielandts UPMT is recognised as a reliable partner by its international customers.


Marc Wielandts has a master degree in aeronautical engineering (1984) and has more than 25 years of experience in the field of opto-mechanics and mechatronics for space applications, astronomy and high tech industrial applications. In 2012, in his free time, he solved the problem to index automatically large lens arrays allowing to sequentially machine every single lens on axis. Convinced of all the advantages, he decided to develop, patent and commercialise this technology.

Remi Wielandts obtained his master degree in precision mechanical engineering in 2014 at the TU Delft (Netherlands). He developed his thesis related to the development of the DPI technology at the KU Leuven. He started as mechatronics engineer and Ultra-precision machining specialist at WIELANDTS UPMT and is actually the CTO.


Wielandts UPMT s.a.
c/o WSL theLABS
Rue Bois Saint-Jean 15/1
4102 Seraing, Belgium
VAT: BE 0537 956 555


The European regional development fund (ERDF or FEDER) and the Walloon region have financially supported an investment project to extend the manufacturing capabilities of Wielandts UPMT in ultra-precision machining for optics applications. The goal of the investment project was to develop its own manufacturing capabilities. These were needed to offer a complete solution to our customers and exploit the developed DPI system for lens arrays. Within this project, investment was made in diamond turning but also molding and metrology equipment.

Privacy Policy

Who we are

Wielandts UPMT s.a. has its legal address at Rue d'Esneux 5, 4550 Nandrin, Belgium. Our offices and production facilities are located at Rue Bois Saint-Jean 15/1, 4102 Seraing, Belgium. Our website address is: http://www.upmt.be. For more contact details, please have a look at the contacts section.

What personal data we collect and why we collect it

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If you give us your permission, we collect the following information: location, pages visited, operating system and browser type. Your IP address is masked out to comply with the European GDPR. We use this data purely for statistical analyses and marketing impact analyses. We do not track any of your activity on the web outside of our website.

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Who we share your data with

We do not share any of your data, in part or in whole, with any third parties outside Wielandts UPMT.

How long we retain your data

If you subscribe to our newsletters through the subscription forms, we retain your data indefinitely or as long as you do not ask to unsubscribe. When you visit our website, we retain your visitor statistics for one year.

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