Laser Jailer Active Laser GuardingThe Active Laser Guarding System with Inherent Fail Safe Technology

  • Active and Passive Laser Enclosures
  • Lightweight modular, scalable design – – saving life, preventing injury, – preventing damage to infrastructure
  • Retrofit to existing rooms/enclosures
  • Rapid turnkey solution using proven design
  • Conforms to laser safety standards EN/IEC 60825-1 and ANSI Z136.1

The Laser Jailer® is an active laser safety system which combines an inherently fail-safe laser detection technique and Lasermet’s proven laser Interlock® control system technology to create an active laser guarding system which is fail safe to Machinery Directive Standard EN13849-1.


The system is designed to contain a high powered laser beam in a laser enclosure which is smaller and lighter than would otherwise be necessary. It comprises of an outer passive enclosure and an inner active enclosure made up of detector tiles which are connected to Lasermet’s ICS Interlock® system.

Lasermet’s fail-safe technology isolates the laser safety input in less than 50ms. The laser machine responds to this laser termination signal and laser radiation is terminated – the actual laser termination time being dependent on the laser machine in use. Read more on active laser safety applications…

Virtually any size of active laser enclosure can be accommodated from small enclosures to full, room-size laser shelters containing robot welding machines. The fully commissioned laser cabin will then act as an effective laser barrier and beam stopper to confine the laser beam within the laser protective cabin.

Benefits of active laser detection from Lasermet

  • Inherent Fail Safe Technology
  • Conforms to the Design Safety requirements of EN13849-1
  • Conforms to EN60825-4
  • Versatile
  • Modular
  • Scalable
  • Provides maximum protection
  • Lightweight
  • Proven technology
  • Standard or custom designed
  • Easy to maintain
  • Rapid availability
  • Reduces building infrastructure

Description of the Laser Jailer® Active Laser Safety System

The active laser guard – Laser Jailer® – comprises of a laser safety enclosure which is lined throughout with laser beam detector tiles. These panels, which also act as a laser shield, are connected to the Lasermet active safety control system, the laser safety Interlock® controller, so that if a stray laser beam impacts on one of the tiles, the Interlock® will isolate the laser safety input in less than 50ms. A laser warning sign on the front of the laser cabin shows if the laser is on or off. Laser Arming and Emergency Stop buttons are also installed on custom laser enclosure door.

Remote monitoring of active laser guarding systems

This schematic shows how the active safety system can be integrated with the ICS Interlock® system which can have the option of being monitored via the internet.

Laser active laser guard

Conformance to laser safety standards

The system is certified for use in accordance with BS EN IEC 60825-4.

The system is designed to conform to the requirements of BS EN ISO 13849-1:2008 and conforms to the following European Directives:

  • Machinery Directive
  • Low Voltage Directive
  • Electromagnetic Compatibility Directive

Ordering information

To specify the Laser Jailer® Active Laser Guarding System you require, the following items must be addressed.

  • Specification of the laser
  • The intended use of the laser
  • The dimensions and specification of the laser safety enclosure A large laser enclosure may need estimated measurements for quotation purposes
  • Identification of relevant safety interlocks -doors, switches, maglocks.

Read more on active laser safety details and applications

Call Lasermet today if you would like to know more about the system, or if you have an application where you may need the Laser Jailer®.




Each Polarflex sheet (or detector panel), that measures 500 x 630mm, contains a laser detector circuit which is connected to the laser Interlock®

If a high power laser is directed at any of the tiles within the laser cell, it changes the properties of the circuit which is detected by the Interlock® system to turn the laser off. The signal is sent to the laser in less than 50ms.

Due to the extremely high power of some lasers, the tiles have been designed to be easily replaced once they have been struck by a high energy laser beam.

These sacrificial detector sheets can be folded and overlapped to fit into corners or to fit around equipment.  They are simply joined together electrically by a connector at each end.


The detector sheets are dropped into pockets which are suspended on the walls of the enclosure. They can be covered by thin sheets of steel to look smarter. These sheets should have no effect on the performance of the Laser Jailer system.


Being a modular active laser protection system, the Laser Jailer® system can be retrofitted to an existing enclosure. Passive laser safety systems cannot contain high power lasers that have a small beam.

The Lasermet active laser safety control system design is lightweight, adaptable, repeatable and maintainable, and uses fail-safe technology.


The laser guard design – using active technology – is cost effective because it can reduce the requirement for some of the strength and weight of some of the surrounding infrastructure.


If a detector sheet needs to be replaced due to damage caused by the laser, this can be carried out easily and quickly as replacement detector sheets are inexpensive.



The Laser Jailer® system is an effective laser containment system ideal for housing laser applications and activities such as laser drilling, laser welding, laser ablation and laser cutting. Industrial applications where the Laser Jailer® can be used include the aerospace industry that uses laser machining, laser trimming and the laser repair of turbines. It is also a safety consideration to contain lasers in applications that use laser additive manufacturing of complex parts and additive welding.

Lasers, and the subsequent laser safety equipment and training, are now used in the energy and nuclear industry where they are used for welding pump components for nuclear power plants and are even used for underwater laser welding and under-water laser cutting.

Even in the dismantling of nuclear power plants they can be are used for concrete scabbling and to cut thick concrete slabs.


Lasermet’s active laser guarding system is designed to prevent death by laser and to prevent injury by laser. This high speed active laser safety control system also prevents destruction by laser, that is, of the surrounding infrastructure. This includes preventing damage from laser beams to the building and its services. The Laser Jailer® is much more than a simple beam blocking barrier and, which ever guard system the customer decides upon – either active or passive laser blocking, Lasermet can design and manufacture the complete bespoke laser cabin.

The fast response of the active laser guard system is achieved by sensing the laser impacting on the active laser wall within the laser room. If a stray laser beam impacts on one of the tiles, the Interlock® will isolate the laser safety input in less than 50ms. The laser will then be turned off – the precise shut-off time being dependent of the laser machine in use.

The Laser Jailer® is effective against all laser wavelengths and can be used in material processing, for example, in the automotive industry in applications such as laser welding, and in aerospace and renewables for laser hardening, laser profiling, laser surface cleaning, laser dressing and laser machining.

In the medical and healthcare industries, the machining of parts using lasers can be carried out within and active or passive laser safety enclosures depending on the power of the laser being used.

Key Details


The Laser Jailer® Active Laser Guard System has the following patents :

Patents: Active Laser Guarding System
US Patent No.                 8 416 820
European Patent No.    2 592 326 CH+LI DE FR GB IE NL SE
Australian Patent No:  2012202599

Mechanical Specification

  • Polarflex flexible sheet panel dimensions: 500 x 630 mm

Main system components

  • Active detector tiles
  • Wall mounted pockets
  • Interlock® system with detector module
  • Illuminated laser warning sign
  • Laser Arming button
  • Emergency stop button