Journal
JOURNAL OF THE EUROPEAN OPTICAL SOCIETY-RAPID PUBLICATIONS
Volume 6, Issue -, Pages -Publisher
EUROPEAN OPTICAL SOC
DOI: 10.2971/jeos.2011.11044
Keywords
segments; CNC polishing; mid-spatial frequency
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Funding
- Engineering and Physical Sciences Research Council [EP/F031416/1] Funding Source: researchfish
- EPSRC [EP/F031416/1] Funding Source: UKRI
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BoX (TM) 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. [DOI: http://dx.doi.org/10.2971/jeos.2011.11044]
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