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.
SPIE - 200

Thales SESO at SPIE Astronomy 2016
Vendredi, avril 15, 2016

Thales SESO will exhibit at the next SPIE Astronomy show held in Edinburgh (Scotland) 26th June-01st July. This is the world largest symposium/exhibition in connection with optics and opt [...]

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KOMPSAT 3A launched
Jeudi, février 25, 2016

KOMPSAT 3A Satellite was launched in March 25, 2015. The main optical instrument of the satellite was developed by Korea Aerospace Research Institute (KARI), wi [...]

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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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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