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RMS

How does Peak to Valley (PV) and Root Mean Square (RMS) affects the quality of your optic?

  • Posted on: 4 March 2020
  • By: Kai Xin

Peak-to-Valley (PV) and Root-Mean-Square (RMS) are two common parameters used to measure the difference between an ideal optic surface to the actual optic surface. Historically the PV is used more often than RMS but RMS is a much better method for measuring the feat of an optic. Neither one of them are perfect parameters to fully calculate the optics’ performance.