Light curtains have become indispensable safety devices in industrial environments, protecting both personnel and machinery. These photoelectric devices use beams of light to detect objects or intrusions and trigger a safety response.

Light curtains are known for their versatility and ability to provide safety solutions across various industries, making them a popular choice. In fact, the light curtains market is predicted to reach a value of $2.1 billion by 2030, highlighting the need for them among certain sectors.  

There are different types of light curtains available, and they each have a diverse range of applications. Here, we look at the options available.

Area-based light curtains

Area-based light curtains are widely used for safety applications in industrial settings. These curtains create a horizontal or vertical detection field, consisting of multiple beams of light. When an object or person interrupts these beams, the light curtain immediately detects the intrusion and triggers a safety response.

Area-based light curtains find extensive use in access control systems, where they ensure that only authorized personnel can enter restricted areas. They are also utilized in perimeter protection to secure and monitor specified areas. Additionally, these light curtains play a crucial role in presence detection, alerting operators when someone enters a hazardous zone. Their applications range from manufacturing facilities to warehouses and logistics centers.

Hand detection light curtains

Hand detection light curtains are designed to provide specialized safety solutions for scenarios where hands are in close proximity to hazardous machinery. These curtains create a grid of beams, ensuring that any intrusion into the specified zone triggers an immediate safety response.

Hand detection light curtains are used in applications where hand injuries could be likely. They do this by detecting any hand movement near the machine’s dangerous areas. They are also used on assembly lines to safeguard operators working alongside robotic arms. By offering real-time hand detection, these light curtains enhance overall safety.

Measurement light curtains

These are used in industrial processes that require precision measurement and dimensioning. These curtains use light beams to capture accurate data, ensuring quality control and improving efficiency.

In dimensional measurement applications, measurement light curtains provide non-contact measurement solutions. They are often used to measure object dimensions, detect defects, and perform profiling tasks. These light curtains are also invaluable in sorting applications, where they enable precise categorization of objects based on their dimensions or characteristics.

Perimeter light curtains

Perimeter light curtains offer comprehensive safety solutions by creating a protective barrier around an entire perimeter. These curtains utilize multiple beams of light to detect any unauthorized access or intrusion, triggering an immediate response to maintain safety.

They’re used in machine guarding, where they prevent operators from entering hazardous zones while the machines are in operation. They are also used in automated storage systems, ensuring the safety of employees working close to moving equipment. They also provide perimeter protection for critical areas, enhancing overall security measures.

Light curtains have revolutionized safety measures in industrial environments, providing efficient and reliable solutions for personnel and machinery protection. With new innovations being introduced to the market in recent years and different sectors investing in them, it’s clear that light curtains play a vital role in ensuring safety and optimizing efficiency in industrial settings.