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Proceedings Paper • Open Access

Mounts for large lens in cooled environment
Author(s): Thierry Viard; Christophe Devilliers; Vincent Costes; Didier Gangloff

Paper Abstract

For the future space missions as Cosmic Vision, the working temperature of the optics can be very low even for visible applications. This is due to the L2 environment. Thus, in the PLATO mission, a dioptric imaging solution based on lenses with diameters up to 180 mm and temperature around 190 K was selected. Furthermore, for EUCLID mission, the dichroic blade associated to a diameter of 120 mm and a temperature of 150 K is one of the key elements. Such large optical components working in a cooled environment are not easy to implement. Classical mounting solutions qualified for small optics are no more relevant for next generation of scientific applications. Thales Alenia Space has proposed, designed and developed, in the framework of a CNES R&T activity, a mechanical concept for the mounting of large refracting components (180 mm diameter) compatible with mechanical loads (30 g) and thermal environment (150 K). A full size breadboard has been realized and tested.

Paper Details

Date Published: 20 November 2017
PDF: 7 pages
Proc. SPIE 10564, International Conference on Space Optics — ICSO 2012, 1056424 (20 November 2017); doi: 10.1117/12.2309117
Show Author Affiliations
Thierry Viard, Thales Alenia Space (France)
Christophe Devilliers, Thales Alenia Space (France)
Vincent Costes, Ctr. National d'Études Spatiales (France)
Didier Gangloff, Ctr. National d’Etudes Spatiales (France)

Published in SPIE Proceedings Vol. 10564:
International Conference on Space Optics — ICSO 2012
Bruno Cugny; Errico Armandillo; Nikos Karafolas, Editor(s)

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