According to the measurement at grinding stage, we put forward a method based on numerical control
machine tools(NC) to measure profile of large aspheric optic. First, we calibrate the straightness of the
machine tool sliding guide which is a critical component of the test system and has a function of
supporting and orienting, to improve the motion precision of that machine; and second, measure profile
of large aspheric optic with the help of NC machine and Heidenhai(MT60); and third, process the test
data to further enhance the precision of measurement.
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