Fabien Lemarchand, Winner of OIC Design Contest 2025

At the triennial “Optical Interference Coatings” congress, an International Competition took place from October 2024 to April 2025.

Its objective was to find the optimal optical stack designs that met precise specifications.

About fifteen participants, from public and private organizations worldwide, worked on four distinct problems.

Their solutions were evaluated using an error function that measured the difference between the requested specifications and the calculated results.

Fabien Lemarchand, from RCMO team,won first prize in each category, demonstrating his expertise in designing complex stack formulas.

Congratulations to him and to the Optical Thin Films team at Institut Fresnel !