DIN EN ISO 11146-1:2021-11 Lasers and laser-related equipment - Test methods for laser beam widths, divergence angles and beam propagation ratios - Part 1: Stigmatic and simple astigmatic beams (ISO 11146-1:2021); German version EN ISO 11146-1:2021
2021DIN EN ISO 11146-1:2021 Lasers and laser-related equipment - Test methods for laser beam widths, divergence angles and beam propagation ratios - Part 1: Stigmatic and simple astigmatic beams (ISO 11146-1:2021); German version EN ISO 11146-1:2021
2005DIN EN 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 (ISO 11146-1:2005); German version EN ISO 11146-1:2005