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Proceedings Paper

High-precision opto-mechanical lens system for space applications assembled by innovative local soldering technique
Author(s): P. Ribes ; C. Koechlin; T. Burkhardt; M. Hornaff; D. Burkhardt; A. Kamm; S. Gramens; E. Beckert; G. Fiault; R. Eberhardt; A. Tünnermann
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Paper Abstract

Solder joining using metallic solder alloys is an alternative to adhesive bonding. Laser-based soldering processes are especially well suited for the joining of optical components made of fragile and brittle materials such as glasses, ceramics and optical crystals. This is due to a localized and minimized input of thermal energy. Solderjet bumping technology has been used to assemble a lens mount breadboard taking as input specifications the requirements found for the optical beam expander for the European Space Agency (ESA) EarthCare Mission. The silica lens and a titanium barrel have been designed and assembled with this technology in order to withstand the stringent mission demands; handling high mechanical and thermal loads without losing its optical performances. Finally a high-precision opto-mechanical lens mount has been assembled with a minimal localized stress (<1 MPa) showing outstanding performances in terms of wave-front error measurements and beam depolarization ratio before and after environmental tests.

Paper Details

Date Published: 1 March 2016
PDF: 7 pages
Proc. SPIE 9750, Integrated Optics: Devices, Materials, and Technologies XX, 97501K (1 March 2016); doi: 10.1117/12.2208123
Show Author Affiliations
P. Ribes , Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Friedrich-Schiller-Univ. Jena (Germany)
C. Koechlin, SODERN (France)
T. Burkhardt, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
M. Hornaff, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
D. Burkhardt, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
A. Kamm, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
S. Gramens, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
E. Beckert, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
G. Fiault, SODERN (France)
R. Eberhardt, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
A. Tünnermann, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Friedrich-Schiller-Univ. Jena (Germany)


Published in SPIE Proceedings Vol. 9750:
Integrated Optics: Devices, Materials, and Technologies XX
Jean-Emmanuel Broquin; Gualtiero Nunzi Conti, Editor(s)

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