ANSI/OEOSC OP1.002-2017 Optics and Electro-Optical Instruments – Optical Elements and Cemented Optical Components – Surface Imperfections.
This standard is sometimes referred to as the “Scratch and Dig Standard.” It establishes uniform practices for stating, interpreting, and inspecting surface imperfections of many different types – scratches, digs, chips, fractures, and others – for transmissive and reflective optical elements and assemblies. This standard provides two alternative notations for specifying surface imperfections. A numerical…