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1 March 2016 High-precision opto-mechanical lens system for space applications assembled by innovative local soldering technique
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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.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
P. Ribes , C. Koechlin, T. Burkhardt, M. Hornaff, D. Burkhardt, A. Kamm, S. Gramens, E. Beckert, G. Fiault, R. Eberhardt, and A. Tünnermann "High-precision opto-mechanical lens system for space applications assembled by innovative local soldering technique", Proc. SPIE 9750, Integrated Optics: Devices, Materials, and Technologies XX, 97501K (1 March 2016); https://doi.org/10.1117/12.2208123
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