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Proceedings Paper

Status of ZERODUR mirror blank production at SCHOTT
Author(s): Thorsten Doehring; Peter Hartmann; Ralf Jedamzik; Armin Thomas
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Paper 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.

Paper Details

Date Published: 18 August 2005
PDF: 9 pages
Proc. SPIE 5869, Optical Manufacturing and Testing VI, 586902 (18 August 2005); doi: 10.1117/12.613880
Show Author Affiliations
Thorsten Doehring, SCHOTT AG (Germany)
Peter Hartmann, SCHOTT AG (Germany)
Ralf Jedamzik, SCHOTT AG (Germany)
Armin Thomas, SCHOTT AG (Germany)

Published in SPIE Proceedings Vol. 5869:
Optical Manufacturing and Testing VI
H. Philip Stahl, Editor(s)

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