Status of ZERODUR mirror blank production at SCHOTT

Thorsten Doehring; Peter Hartmann; Ralf Jedamzik; Armin Thomas

doi:10.1117/12.613880

18 August 2005 Status of ZERODUR mirror blank production at SCHOTT

Thorsten Doehring, Peter Hartmann, Ralf Jedamzik, Armin Thomas

Proceedings Volume 5869, Optical Manufacturing and Testing VI; 586902 (2005) https://doi.org/10.1117/12.613880
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

SCHOTT has a history of more than 35 years with the production of the zero expansion glass ceramic material ZERODUR. More than 250 ZERODUR mirror blanks were already delivered to the large segmented telescopes KECK I, KECK II, HET, GTC, and LAMOST. The increasing worldwide demand on large ZERODUR components for LCD display lithography machines is similar to the expected demand for an Extremely Large Telescope. Last year SCHOTT has ramped up its ZERODUR production capacity. These recent investments in additional melting and ceramisation capabilities are accompanied by improvements of quality assurance and processing technology. SCHOTT is now prepared also for a future production of mirror blanks for Extremely Large Telescopes. The present status of the production capacity and the mass production of ZERODUR mirror blanks for industrial applications are discussed.

Citation Download Citation

Thorsten Doehring, Peter Hartmann, Ralf Jedamzik, and Armin Thomas "Status of ZERODUR mirror blank production at SCHOTT", Proc. SPIE 5869, Optical Manufacturing and Testing VI, 586902 (18 August 2005); https://doi.org/10.1117/12.613880

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