ISO 11146-1:2005 Lasers and laser-related equipment - Test methods for laser beam widths, divergence angles and beam propagation ratios - Part 1: Stigmatic and simple astigmatic beams
GOST R ISO 11990-1-2015 history
2015GOST R ISO 11990-1-2015 Lasers and laser-related equipment. Determination of laser resistance of tracheal tubes. Part 1. Tracheal tube shaft