Bertin Winlight
French optical systems manufacturer, part of the Bertin Technologies group. Designs and builds precision space optics, optical benches, and instrumentation for space and defence missions. Specialities include large mirror polishing, optical bench assembly, and complete optical subsystem integration for spaceborne spectrometers and imagers. European space supply chain peer of Sodern (star trackers), Zeiss (optical components), and Leonardo Optronics.
Bertin Winlight is a French precision-optics manufacturer headquartered in Pertuis, France. Founded in 2001 as Winlight System by Daniel Soler and Philippe Godefroy, the company was acquired by Bertin Technologies Group in 2017 and rebranded Bertin Winlight. Bertin Technologies Group is majority-owned by FCDE and BNP Paribas Developpement since April 2022.[^bw-about]
Operating from a 2,200 m2 temperature-controlled production facility in Pertuis, the company designs and manufactures high-precision optical components, mirrors, lenses, prisms, and image slicers, in materials including low-expansion silica, Zerodur, ULE, and SiC, spanning millimetre-scale to 1.5 m aperture. Surface accuracy reaches 0.1 nm RMS for visible-range optics.[^bw-optical-components]
Bertin Winlight holds ISO 9001:2015 and EN9100 (achieved January 2024, aerospace and space quality standard) certifications for its Pertuis facility.[^bw-about]
The company's space portfolio spans science and Earth observation programmes. Confirmed EO-relevant deliveries include aspherical mirrors for the SuperCam instrument on NASA's Mars 2020 Perseverance rover, CHEMCAM optics on Curiosity, baseplate grinding for JWST's NIRSpec spectrometer, and optics for the VLT MUSE and Subaru PFS spectrographs.[^bw-space][^bw-news] Bertin Winlight also supplied mirrors for the UltraViolet Imager on ESA's SMILE satellite; SMILE is a magnetosphere and aurora science mission, not an Earth surface EO mission, so this delivery represents science optics supply rather than EO supply-chain participation.[^bw-space]
For the New Space EO market, Bertin Winlight offers SPEO, an integrated multispectral optical payload for smallsats. SPEO HR targets sub-0.5 m GSD with an 11 km swath in VNIR; SPEO MR adds SWIR capability. In July 2025, Bertin Technologies announced agreements with Hemeria (for its HP-EOS satellite range) and Promethee Earth Intelligence (for the Japetus constellation), with first SPEO payload delivery targeted for 2026.[^bw-hemeria]