Journal of the European Optical Society Rapid Publications · 2011 · 32 citations · 6 references
EngineeringMachine VisionImage AnalysisReflection RemovalMaterial MachiningMirror SegmentsMechanical EngineeringForm SpecificationsE-elt Segment ProcessMid-spatial Frequency FeaturesStereo ImagingMachine ToolManufacturing EngineeringSpatial Filtering3D PrintingComputer VisionAbrasive Machining
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.
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Subsurface damage in precision ground ULE® and Zerodur® surfaces
Xavier Tonnellier, Paul Morantz, Paul Shore et al. · Optics Express · 2007 · 38 citations · Full text
Geotechnical Engineering, Materials Science, Engineering +15
A quantitative comparison of three grolishing techniques for the Precessions process
David Walker, A. Baldwin, Rachael A Evans et al. · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2007 · 21 citations
Engineering, Industrial Engineering, Mechanical Engineering +18