Updating the peak-to-valley (PV) irregularity specification for the modern world
Paul E. Murphy
Abstract:Communicating fabrication tolerances is a vital part of the optical manufacturing process. The most common surface form tolerance is peak-to-valley (PV) irregularity, and its specification and evaluation has largely remained unchanged for decades. Fabrication, testing, and computation capabilities, however, have evolved considerably over that time, exposing PV's extreme sensitivity to outlier data points. When everyone was using the same measurement and analysis technique (visual inspection of test plate inter… Show more
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