High-precision safety light curtains are safety devices used for robots and automation equipment. They consist of emitters and receivers that emit an invisible infrared beam to create a protective curtain, detecting and preventing the entry of personnel or other objects into hazardous areas. High-precision safety light curtains have several advantages. Firstly, they provide very accurate detection capabilities, capable of detecting very small objects, even as small as 2.5mm opaque objects. Secondly, they have fast response times, detecting and stopping machine movements within milliseconds to protect the safety of personnel. Additionally, high-precision safety light curtains can adapt flexibly to various complex environments and integrate with other safety devices to provide comprehensive safety protection.