The optics community has long recognized the problems of misinterpretation of the surface quality specification and the potential for conflict1-2. Finally in 2017 there are new versions of the ISO and ANSI standards for surface imperfection tolerances which provide vastly improved alternatives to the existing options, especially the use of the US Military standard for specifying optical quality tolerances. This paper will review the existing standards in common use for specifying surface imperfections, and then describe in detail the new versions of the ISO and ANSI standards which are available in 2017. The details of the notations and inspection methods for each of the optics specifications will be provided, and the differences between the various alternatives will be discussed.
Dave Aikens, Dave Aikens,
"New options for optical quality tolerances", Proc. SPIE 10590, International Optical Design Conference 2017, 105900J (27 November 2017); doi: 10.1117/12.2292617; https://doi.org/10.1117/12.2292617