Safety of laser products - Part 12: Safety of free space optical communication systems used for transmission of information (IEC 60825-12:2019); German version EN IEC 60825-12:2019
激光产品的安全.第12部分:用于信息传输的自由空间光通信系统的安全(IEC 60825-12-2019);德文版EN IEC 60825-12:2019