Substrates & Thin film technologies

The HEF Group, a world expert in surface materials engineering, is accelerating its diversification into Optics by integrating 6 companies since 2021: FICHOU, KERDRY, ACERDE, OPTIMASK, NEYCO (France), and ABRISA TECHNOLOGIES (USA)

There are now 250 specialists dedicated to precision optics, the production of components, and coatings for photonics representing a total turnover of 40 MEUR. 

This new unit develops complete expertise to adapt to customer requirements : for example, it can process large parts up to 1500 mm in diameter and 600 kg. 

Precision photolithography in 2 clean rooms for substrates up to 200 mm, optical substrates with diameters up to 300 mm, and polishing offered at λ /20, including for sapphire, are also part of the offer.

Finally, in the United States, HEF also produces large series of glass substrates (with cutting, curing, chemical treatments) and the associated optical coatings for touch screens, filters, mirrors.

This strong dynamic and decisive assets enable HEF to meet the specific demands of our customers and in particular optical coatings on request from UV to far IR by EBeam evaporation, sputtering, thermal evaporation and associated technologies.