Abstract
This paper for the first time maps the complete progress of an aspheric part through all stages of 2½ D form correction on the Zeeko Aii machine, from the pre-polished state with severe defects, to 0.12 waves p-to-v and 0.015 waves rms, which met the specification. Particular problems overcome included high surface-slopes at early stages, and geometric distortion in interferometer data causing significant tool-placement errors. The work has demonstrated the capability of the <i>Precessions</i> process to deliver high-precision aspheric surfaces in a deterministic manner. Article not available.
© 2006 Optical Society of America
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