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Optical Engineering • new

High-precision optomechanical lens system for space applications assembled by a local soldering technique
Author(s): Pol Ribes Pleguezuelo; Charlie Koechlin; Marcel Hornaff; Andreas Kamm; Erik Beckert; Guillaume Fiault; Ramona Eberhardt; Andreas Tünnermann
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Paper Abstract

Soldering 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 glass, 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 using specifications and requirements found for the optical beam expander for the European Space Agency 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 of handling high mechanical and thermal loads without losing the optical performance. Finally, a high-precision optomechanical lens mount has been assembled with minimal localized stress (<1  MPa) showing outstanding performance in terms of wave-front error and beam depolarization ratio before and after environmental tests.

Paper Details

Date Published: 8 June 2016
PDF: 5 pages
Opt. Eng. 55(6) 065101 doi: 10.1117/1.OE.55.6.065101
Published in: Optical Engineering Volume 55, Issue 6
Show Author Affiliations
Pol Ribes Pleguezuelo, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Friedrich-Schiller-Univ. Jena (Germany)
Charlie Koechlin, SODERN (France)
Marcel Hornaff, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Andreas Kamm, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Erik Beckert, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Guillaume Fiault, SODERN (France)
Ramona Eberhardt, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Andreas Tünnermann, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)


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