Title

Removal of Mid Spatial-Frequency Features in Mirror Segments

Comments

Copyright © The Authors. All rights reserved.

Metadata is only available from this site, however the full text published version can be viewed at the journals website at http://dx.doi.org/10.2971/jeos.2011.11044

Abstract

BoX grinding technology has been adopted in our E-ELT segment process. The mid-spatial frequency features generated can be removed by several 'smoothing' processes. We have reported here a novel method that can smooth these features whilst avoiding edge down-turn. This process can be scaled up to E-ELT segment fabrication time-scale. It has been experimentally demonstrated that the surface quality is good enough for subsequent Zeeko form correction technology to achieve form specifications.

Disciplines

Atomic, Molecular and Optical Physics | Computer-Aided Engineering and Design | Engineering | Engineering Physics | Manufacturing | Semiconductor and Optical Materials

Recommended Citation

Yu, G., Li, H. & Walker, D. (2011) "Removal of mid spatial-frequency features in mirror segments", Journal of the European Optical Society 11044 Vol 6.


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