Manufacturing of lightweighted ZERODUR components at SCHOTT

Thorsten Döhring; Armin Thomas; Ralf Jedamzik; Heiko Kohlmann; Peter Hartmann

doi:10.1117/12.733770

15 September 2007 Manufacturing of lightweighted ZERODUR components at SCHOTT

Thorsten Döhring, Armin Thomas, Ralf Jedamzik, Heiko Kohlmann, Peter Hartmann

Proceedings Volume 6666, Optical Materials and Structures Technologies III; 666602 (2007) https://doi.org/10.1117/12.733770
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

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.

Citation Download Citation

Thorsten Döhring, Armin Thomas, Ralf Jedamzik, Heiko Kohlmann, and Peter Hartmann "Manufacturing of lightweighted ZERODUR components at SCHOTT", Proc. SPIE 6666, Optical Materials and Structures Technologies III, 666602 (15 September 2007); https://doi.org/10.1117/12.733770

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