Development and performances of very long stripe-filters for a multispectral detector

David Laubier; Thierry Gimenez; Renaud Mercier-Ythier

doi:10.1117/12.453464

18 January 2002 Development and performances of very long stripe-filters for a multispectral detector

David Laubier, Thierry Gimenez, Renaud Mercier-Ythier

Proceedings Volume 4483, Earth Observing Systems VI; (2002) https://doi.org/10.1117/12.453464
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

The development in the past few years of all-mirror telescopes has opened a wide new range of possibilities to instrument designers, with features like high compactness and outstanding optical quality over wide fields of view. However, this design imposes specific constraints on the focal plane: it can no longer accommodate glass beamsplitters and its size increases with the field of view. New CCD detectors with multiple long lines are well-suited to this application, but require a new filters strategy. This paper will detail what ours was in the particular case of a 78-mm long, 4-channel CCD. The choice of the stripe- filters concept was made on the basis of a performance versus cost analysis. Two kinds of assemblies were retained at this stage. The components manufactured by SAGEM-REOSC PRODUCTS in an initial development phase showed good spectral performance with high rejection over a very wide range of wavelengths. Some topics like local defects and straylight needed specific work. The paper focuses on the impact of the defects on the performances and the way they have been dealt with, and on the straylight design strategy with the results obtained in the different cases. In particular, it shows how the detector's design can be partially driven by the straylight requirements.

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David Laubier, Thierry Gimenez, and Renaud Mercier-Ythier "Development and performances of very long stripe-filters for a multispectral detector", Proc. SPIE 4483, Earth Observing Systems VI, (18 January 2002); https://doi.org/10.1117/12.453464

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KEYWORDS

Sensors

Charge-coupled devices

Manufacturing

Optical filters

Detector development

Linear filtering

Reflection

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