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Proceedings Paper

Manufacturing of lightweighted ZERODUR components at SCHOTT
Author(s): Thorsten Döhring; Armin Thomas; Ralf Jedamzik; Heiko Kohlmann; Peter Hartmann
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Paper Abstract

There is a broad range of applications for lightweighted components made from ZERODUR(R) glass ceramic. The main markets are secondary and tertiary mirrors for astronomical telescopes, mirrors and structural components for satellites, and mechanical structures for industrial applications, mainly in microlithography. Prominent examples from astronomy are VLT-M3, GEMINI-M2, SOFIA-M1, MAGELLAN-M2, MMT-M2, and METEOSAT-SEVIRI. At SCHOTT components with blind or undercut semiclosed holes are manufactured, typically with circular, hexagonal, rectangular or triangular shapes. The classical grinding process results in weight reduction factors of about 70 %. By additional acid etching technologies even higher lightweighting factors and rib thicknesses below 1 mm have been achieved.

Paper Details

Date Published: 15 September 2007
PDF: 9 pages
Proc. SPIE 6666, Optical Materials and Structures Technologies III, 666602 (15 September 2007); doi: 10.1117/12.733770
Show Author Affiliations
Thorsten Döhring, SCHOTT AG (Germany)
Armin Thomas, SCHOTT AG (Germany)
Ralf Jedamzik, SCHOTT AG (Germany)
Heiko Kohlmann, SCHOTT AG (Germany)
Peter Hartmann, SCHOTT AG (Germany)

Published in SPIE Proceedings Vol. 6666:
Optical Materials and Structures Technologies III
William A. Goodman; Joseph L. Robichaud, Editor(s)

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