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Proceedings Paper • Open Access

Technological development of spectral filters for Sentinel-2
Author(s): Karin Schröter; Uwe Schallenberg; Matthias Mohaupt

Paper Abstract

In the frame of the initiative for Global Monitoring for Environment and Security (GMES), jointly undertaken by the European Commission and the European Space Agency a technological development of two filter assemblies was performed for the Multi- Spectral Instrument (MSI) for Sentinel-2. The multispectral pushbroom imaging of the Earth will be performed in 10 VNIR bands (from 443 nm to 945nm) and 3 SWIR bands (from 1375 nm to 2190 nm).

Possible filter coating techniques and masking concepts were considered in the frame of trade-off studies. The selected deposition concept is based on self-blocked all-dielectric multilayer band pass filter. Band pass and blocking characteristic is deposited on the space side of a single filter substrate whereas the detector side of the substrate has an antireflective coating.

The space- and detector side masking design is realized by blades integrated in the mechanical parts including the mechanical interface to the filter assembly support on the MSI focal plane. The feasibility and required performance of the VNIR Filter Assembly and SWIR Filter Assembly were successfully demonstrated by breadboarding. Extensive performance tests of spectral and optical parameters and environmental tests (radiation, vibration, shock, thermal vacuum cycling, humidity) were performed on filter stripe- and filter assembly level.

The presentation will contain a detailed description of the filter assembly design and the results of the performance and environmental tests.

Paper Details

Date Published: 21 November 2017
PDF: 5 pages
Proc. SPIE 10566, International Conference on Space Optics — ICSO 2008, 105662M (21 November 2017); doi: 10.1117/12.2308206
Show Author Affiliations
Karin Schröter, Jena-Optronik GmbH (Germany)
Uwe Schallenberg, mso jena Mikroschichtoptik GmbH (Germany)
Matthias Mohaupt, Fraunhofer Institut Angewandte Optik und Feinmechanik (Germany)

Published in SPIE Proceedings Vol. 10566:
International Conference on Space Optics — ICSO 2008
Josiane Costeraste; Errico Armandillo; Nikos Karafolas, Editor(s)

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