PD ISO/TR 11146-3:2004 Lasers and laser-related equipment. Test methods for laser beam widths, divergence angles and beam propagation ratios. Intrinsic and geometrical laser beam classification, propagation and details of test methods
2006PD ISO/TR 11146-3:2004 Lasers and laser-related equipment. Test methods for laser beam widths, divergence angles and beam propagation ratios. Intrinsic and geometrical laser beam classification, propagation and details of test methods