Lasermet Laser-Blocking Screens

Blocking ScreenHeavy Duty Laser Screens, Connected and Interlocked Standard Blocking Screen

Standard screens are made from a laser-blocking material which has been specially developed for laser safety by Lasermet, This can be supplied off the roll or as ready-made ceiling or wall-mounted curtains, roller blinds, window blocks or free standing screens and enclosures.

Also available are heavy-duty screens for high power, multi-kilowatt materials-processing lasers. These are made from a 50 mm thick sandwich of steel and a special lightweight laser-blocking material.

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Free-Standing Laser-blocking Screens

Lasermet Laser Blocking Screens are offered in standard and heavy-duty options. Both are made from materials which have been specially developed by Lasermet using their expert understanding of practical laser safety requirements. These screens can be used to block lasers of all wavelengths.

Standard Laser-Blocking Screens

Standard laser blocking screens
Standard laser blocking screens guarding laser system

These are available in two standard size screens.  The LBS-8 is 2.44 m (8 ft) wide and the LBS-4 is 1.22 m (4 ft) wide. Both are 1.92 m (6 ft 4 in) high, which is high enough to protect the eyes of anyone less than 6 ft 8 inches tall standing right up to the screen, while low enough to pass through a standard doorway.  The screens can be made higher if desired.

Standard Laser-Blocking Screens consist of a black powder coated steel framework, mounted on lockable castors.  The framework supports a laser-blocking screen made from Lasermet's specially-developed laser-blocking material which seals to the floor.  The material is white on one side and black on the other side and will operate as a blackout screen as well as a laser-blocking screen.  Both sides will block laser radiation but if the white side is used as the laser-blocking side a higher specification of blocking will be achieved, making it suitable for higher power lasers.

The material is fireproof. When irradiated with greater than 0.5 MW/m2 it will emit a non-hazardous smoke and may glow, thus indicating that a stray beam is present. Protection times given by the material at various power densities are shown in the specifications below.

  Irradiated Area PEL (T2) 100s
White Side 1mm2 3 MW/m2
500mm2 0.7 MW/m2
Black Side 1mm2 1 MW/m2
500mm2 0.5 MW/m2

Standard screens can be wheeled easily into position and then kept there by locking the castors.  Multiple screens can be connected together using connecting pieces (LBS-C) in a straight line or at an angle up to 90 degrees.  If four or more screens are used an enclosing rectangular enclosure can be constructed. 


Heavy-Duty Laser Blocking Screens

 Heavy Duty Laser Screens, Connected and Interlocked
Heavy Duty Laser Screens, Connected and Interlocked

These screens are designed to block all lasers, including high power, multi-kilowatt materials processing lasers.  There are two standard size screens, both of which are 1.98m high.  The LBS-HD-8 is 2.35 m wide and the LBS-HD-4 is 1.185 m wide.

The screens consist of a 50 mm thick sandwich of steel and a special lightweight laser-blocking material, with a white laminate finish on both sides. This is mounted on a powder-coated steel framework, with heavy-duty lockable castors. The screens can be wheeled into position and then kept there by locking the castors.  They can be used to form a complete enclosure or part thereof.

Heavy-duty screens can be used to block lasers of all wavelengths. They offer protection to the following specifications:

Irradiated Area PEL (T3) 10 s PEL (T2) 100 s
4 mm2 61 MW/m2 34 MW/m2
2000 mm2 2.7 MW/m2 1.5 MW/m2

Where a production line uses a Class 4 laser for cutting and welding, it is impractical for the whole facility to observe Class 4 safety regulations. However, using complete enclosures can to turn the laser facility into a Class 1 system.

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