TY - JOUR
T1 - Precessions aspheric polishing
T2 - Optical Manufacturing and Testing V
AU - Walker, D. D.
AU - Beaucamp, A. T.H.
AU - Bingham, R. G.
AU - Brooks, D.
AU - Freeman, R.
AU - Kim, S. W.
AU - King, A.
AU - McCavana, G.
AU - Morton, R.
AU - Riley, D.
AU - Simms, J.
PY - 2003
Y1 - 2003
N2 - The Precessions process for producing aspheric and other optical surfaces is undergoing rapid development. In this paper, we summarise the considerable success achieved in controlling the repeatability of the process on both the 200mm and 600mm machines, and illustrate this with examples of aspherics that have been produced. We particularly describe our approach to fine form-control. This has required the development of various strategies to moderate the volumetric removal rates, in order to give the required sensitivity of removal. We conclude with a discussion of the scaling laws that apply when adapting the process to smaller and larger sized parts. This is illustrated by predicting the process-parameters for mass-producing segments for extremely large telescopes.
AB - The Precessions process for producing aspheric and other optical surfaces is undergoing rapid development. In this paper, we summarise the considerable success achieved in controlling the repeatability of the process on both the 200mm and 600mm machines, and illustrate this with examples of aspherics that have been produced. We particularly describe our approach to fine form-control. This has required the development of various strategies to moderate the volumetric removal rates, in order to give the required sensitivity of removal. We conclude with a discussion of the scaling laws that apply when adapting the process to smaller and larger sized parts. This is illustrated by predicting the process-parameters for mass-producing segments for extremely large telescopes.
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M3 - Conference article
AN - SCOPUS:11144354048
SN - 0277-786X
VL - 5180
SP - 15
EP - 28
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
Y2 - 3 August 2003 through 5 August 2003
ER -