Although the technology was developed almost 70 years ago, many applications may still not be making full use of its capabilities.
History of the light curtain
In 1951, Erwin Sick presented the first wooden model of his light curtain to the “German Inventor and New Development Trade Fair” in Munich.   Later the same year a patent registration of the light curtain based on the autocollimator principle was regarded as the technical breakthrough that began the development of technology we know today – one that has saved countless people from injury and death at the hands of dangerous machinery.   Since that time, hardware and software development have transformed the versatility and use of safety light curtains.   The key attributes of light curtains remain the same, but their potential may still be under-exploited.

Safety light curtains
With our safety light curtains ZTAN and ZGSB II, you can protect your staff and capital goods – safely, efficiently and economically. An invisible infra-red protected field protects the danger zones and enables optimum access protection. Ideal for production processes requiring active intervention.


Safety light curtains for safe intervention in the production process
Specifically designed for applications in which material is regularly transported in and out, or where the access point is directly at the danger zone, electrosensitive protective equipment such as safety light curtains enable both safe and flexible intervention in the production process.


zhuoxin light curtains are therefore suitable for numerous industries and applications, such as manual workstations, access guarding on conveyors or material handling alongside robots.