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Proceedings Paper

Recent developments of multispectral filter assemblies for CCD, CMOS and bolometer
Author(s): Roland Le Goff; Bruno Badoil; Philippe Fuss; François Tanguy; Pierre Etcheto
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Paper Abstract

Multispectral channels are required on many pushbroom optical sensors. A possible technology well suited for focal plane miniaturization is to assemble several sliced filter elements (so-called stripes), each corresponding to one spectral channel, and located close to the detectors. The assembled filter is thus customized to fit detector size. These stripes are cut from a wafer using a two dimensional accurate process. For the baseline concept, elementary stripes are then cemented edge-to-edge to form a single substrate. The opaque epoxy used for the stripes assembly creates a light barrier between adjacent elements and thus provides an interesting solution for cross channel image suppression inside the filter. This paper recalls the current SODERN's multi-spectral filter assembly status. Since 2007 R&T activity, the feasibility and the performances have been demonstrated by breadboards and qualification models. The selection of SODERN for two current VNIR space programs consolidates its role as a leading supplier in this field. A complementary 2011 R&T study will demonstrate the performances of this technology for the TIR range and the integration on a bolometer.

Paper Details

Date Published: 3 October 2011
PDF: 7 pages
Proc. SPIE 8176, Sensors, Systems, and Next-Generation Satellites XV, 817618 (3 October 2011); doi: 10.1117/12.898971
Show Author Affiliations
Roland Le Goff, SODERN (France)
Bruno Badoil, SODERN (France)
Philippe Fuss, SODERN (France)
François Tanguy, SODERN (France)
Pierre Etcheto, Ctr. National d'Études Spatiales (France)

Published in SPIE Proceedings Vol. 8176:
Sensors, Systems, and Next-Generation Satellites XV
Roland Meynart; Steven P. Neeck; Haruhisa Shimoda, Editor(s)

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