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Proceedings Paper

Status of the production of 8-m ZERODUR mirror blanks
Author(s): Wolfgang Pannhorst; Rudolf W. Mueller; Hartmut W. Hoeness; Horst Loch; Hans F. Morian; Helmut Tietze; Volker Wittmer
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Paper Abstract

Several glass blanks have been produced, handled, and machined to their approximate shape before ceramization. The melting and spin casting of glass menisci is completed. One glass meniscus has been ceramized and machined to its final shape. In the present paper the experience gained when performing the different process steps will be presented and discussed. This includes a comparison of the theoretical calculations during the planning phase with actual experimental results. The properties measured so far for the first ZERODUR meniscus all meet the requirements, in many cases surpass them.

Paper Details

Date Published: 6 December 1993
PDF: 11 pages
Proc. SPIE 2018, Passive Materials for Optical Elements II, (6 December 1993); doi: 10.1117/12.165232
Show Author Affiliations
Wolfgang Pannhorst, Schott Glaswerke (Germany)
Rudolf W. Mueller, Schott Glaswerke (Germany)
Hartmut W. Hoeness, Schott Glaswerke (Germany)
Horst Loch, Schott Glaswerke (Germany)
Hans F. Morian, Schott Glaswerke (Germany)
Helmut Tietze, Schott Glaswerke (Germany)
Volker Wittmer, Schott Glaswerke (Germany)

Published in SPIE Proceedings Vol. 2018:
Passive Materials for Optical Elements II
Gary W. Wilkerson, Editor(s)

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