NF S10-120-2*NF EN ISO 11146-2:2021 Lasers and laser-related equipment - Test methods for laser beam widths, divergence angles and beam propagation ratios - Part 2 : general astigmatic beams
2021NF S10-120-2*NF EN ISO 11146-2:2021 Lasers and laser-related equipment - Test methods for laser beam widths, divergence angles and beam propagation ratios - Part 2 : general astigmatic beams