DIN EN ISO 11146-1-2005 激光和激光相关设备.激光束宽度、发散角和束扩散率的试验方法.第1部分:无象散和简单象散束
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