KS B ISO 11146-1:2020 Lasers and laser-related equipment — Test methods for laser beam widths, divergence angles and beam propagation ratios —Part 1: Stigmatic and simple astigmatic beams
2020KS B ISO 11146-1:2020 Lasers and laser-related equipment — Test methods for laser beam widths, divergence angles and beam propagation ratios —Part 1: Stigmatic and simple astigmatic beams
2015KS B ISO 11146-1:2015 Lasers and laser-related equipment－Test methods for laser beam widths, divergence angles and beam propagation ratios－Part 1：Stigmatic and simple astigmatic beams
2006KS B ISO 11146-1:2006 Lasers and laser-related equipment-Test methods for laser beam widths, divergence angles and beam propagation ratios-Part 1:Stigmatic and simple astigmatic beams