High-end optical components and systems tailored to your needs

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Scientific Programs

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Thales SESO is a world leading designer and manufacturer of high-end, challenging optical components and systems tailored to customer needs.


All the design and manufacturing steps are integrated (Design, Shaping, lightweighting, Polishing, Coating, Assembly, Tests) which makes us one of the most efficient solution.


In 45 years we accumulated a strong heritage. Our last projects are sorted by markets : space, ground-based astronomy, scientific programs and test systems.
50 ans carré

Happy birthday Thales SESO!
Lundi, novembre 30, 2015

At the beginning of the summer, Thales SESO, based in Aix-en-Provence, celebrated its half-century of existence. Thales SESO began its life as an expert in the polishing of optical pieces [...]

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Alerte cyclonique sur La Réunion Pléiades

Thales SESO on board PLEIADES Satellites launched in 2011 and 2012
Lundi, février 16, 2015

All optical components with their mechanical flexures (Mirrors M1, M2, M3 and M4) and focal plane separator were designed, manufactured and qualified by THALES SESO.

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LAM inauguration of technologic platform POLARIS
Mercredi, décembre 10, 2014

Thales SESO participated to the LAM inauguration of technologic platform on September 19th 2014. One of this platform POLARIS is dedicated to polishing. The originality is that polishing [...]

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Update on new generation bimorph X-ray mirror for synchrotron beamlines
Mercredi, décembre 10, 2014

Many new generation bimorph x-ray mirrors, manufactured by Thales-SESO, are currently in use. A recent article announces scientific advances, thanks to a close collaboration between Diamo [...]

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worlwide presence

To improve our position in the US and Asia we partnered with local subsidiaries of Thales.

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Thales SESO implantations