Removal of Mid Spatial-Frequency Features in Mirror Segments

Yu, Guoyu, Hongyu, Li and Walker, David (2011) Removal of Mid Spatial-Frequency Features in Mirror Segments. Journal of the European Optical Society Rapid Publications, 6 (11044). ISSN 1990-2573

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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.

Item Type: Article
Additional Information: 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
Keywords: segments, CNC polishing, mid-spatial frequency
Divisions: ?? GlyndwrUniversity ??
Depositing User: ULCC Admin
Date Deposited: 04 Aug 2012 00:12
Last Modified: 11 Dec 2017 20:07
URI: http://glyndwr.repository.guildhe.ac.uk/id/eprint/4002

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