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Most Class 4 and many Class 3B lasers present an eye hazard over very long distances and it is therefore imperative to have comprehensive laser safety protection in place wherever they are present.
Laser radiation must be prevented from escaping through the windows of laboratories and production facilities. Ordinary curtains or screens are rarely capable of stopping a laser beam and specially-designed blocking products are required.
Lasermet's laser blocking roller blinds are designed as a passive guarding system to block laser light from escaping the theatre, laboratory or laser facility where Class 3B or Class 4 lasers are in use, either to protect against accidental exposure to the laser beam or for long term blocking of laser radiation at lower power densities.
The blinds are fitted to cover windows (and to doors where there is a window built into the door), and there are options to suit the application.
The options are as follows:-
Encapsulated laser safety roller blinds are made using the same laser-blocking material as the standard laser safety roller blinds. However, the roller blind is built into a white finish aluminium frame, which encapsulates the top, both edges and bottom of the blind. This eliminates any possibility of laser beams passing round the sides of the blind, blocks out all light and gives a much neater finish.
The material used for the roller blinds has been specially developed by Lasermet. All Lasermet laser-blocking products are CE marked and certified to EN 60825-4 (Safety of Laser Products Part 4: Laser Guards).
It is vital to customers that the roller blinds are certified and the material has been tested to the relevant laser safety standards. If non-compliant material were to be used - for example - untested, uncertified sun blocking material, this may have the potential to allow laser beams to penetrate the blind and consequently may cause harm to personnel and/or equipment.
Lasermet's standard blocking roller blinds can be provided with or without guide wires.
Lasermet's laser blocking pull-up blind is a portable "curtain", that can be rapidly deployed to provide a temporary laser guard.
Protection times given by the material at various power densities are shown in the specifications below.
|Irradiated Area||PEL (T3) 10s||PEL (T2) 100s|
|Black or White Side||4mm²||3.9 MW/m²||2.2 MW/m²|
|2000mm²||0.62 MW/m²||0.35 MW/m²|