Optoblok Table Guarding System

Optical Table Laser Guarding

Optoblok, the Optical Table Laser Guarding System, is designed specifically to reduce the risk of stray laser beams being inadvertently directed at personnel in the laser optics laboratory.

Lasermet and NPL have produced this joint venture product as the latest safety equipment for use in optical laboratories.

  • Modular design
  • Compatible with standard optical tables
  • Comes with Optoblok Designer software
  • Simple to install and understand


This Optoblok Optical Table Laser Guarding modular system fits neatly on to optical tables to provide a 300mm high wall. The system comprises of certified laser blocking walled panels, posts (to screw into the table), and channel posts which are either straight or right angled to connect the wall panels together.

The modular design enables areas of the table to be sectioned off in small laser guarding enclosures. The posts and wall panels are also easy to manipulate, allowing users to change up the layout as needed.

Cables are fed through cable entry labyrinths created by overlapping Optoblok wall panels.

Lasermet Optical Table Laser Guarding A
Lasermet Optical Table Laser Guarding B
Lasermet Optical Table Laser Guarding C

The modular system is easily constructed by screwing the posts into the table, then slotting the straight or corner channel posts over the round posts and then simply placing the wall panels in position. Once the panels are inserted they can be secured by a retaining screw and washer on top of the post if required.

Panel sections are available in optical table unit lengths of 2,3,4,5,8,12 and 16 thereby minimising and optimising the quantity required.

The above example shows the provision of a labyrinth system enabling a cable entry at the bottom of the diagram
The above example shows the provision of a labyrinth system enabling a cable entry at the bottom of the diagram

The system is compatible with both metric and imperial optical tables using metric or imperial screw threads and spacing, making this truly a worldwide compatible product covering both the US and European markets in one.


The 300mm high wall around the perimeter of the table maximises the opportunity for safe working while at the same time allowing virtually unlimited access to the table and its components.

The opportunity for an engineers’ hand or arm to accidentally interfere with the laser beam is reduced as it now takes a deliberate act to access the table.


One of the key benefits of Optoblok is that it provides a safe, adaptable, simple laser blocking walled system that enables cable entries to be made and then changed easily for the next set-up. It can easily handle, for example, large diameter control cables.

These are easily provided for within the Optoblok system as there are three advised options to select from as recommended by the Optoblok designer aid software, which is freely available to potential customers to design and specify Optoblok to their requirements. The three labyrinth options are for small, medium and large cable entry ways to be made using the minimum number of components.

A labyrinth system is proposed in the designer software to provide the optimal (usually the minimum) number of components to enable the cabling to enter the table, thus maximising the curvature radius of the cables while minimising the entry gap to eliminate any line-of-sight route that could be used by a laser beam. This ensures there is no line of sight laser beam exit point up to a height of 300mm.


Lasermet’s Optical Table Guarding Designer software is a parts list compiler that enables customers to specify the Optoblok system they require without compromising safety. Simple to use, this program lists all the components for the containment including the facility to specify the number and size of access cable gateways whilst preventing line of sight corridors and therefore preventing the escape of laser light.

All you need to do is decide on the overall dimensions of the four sided Optoblok laser guarding system you require and then decide on the number and size of cable entry points you need for each wall. The programme will then display a list of the straight and right angled posts and the wall panels you need with their respective sizes.


The Optoblok system carries CE and UKCA marking.

4 mm²30 MW/m²17 MW/m²
2000 mm²1.4 MW/m²0.8 MW/m²
16 space panels00764-03-016
12 space panels00764-03-012
8 space panels00764-03-008
5 space panels00764-03-005
4 space panels00764-03-004
3 space panels00764-03-003
2 space panels00764-03-002
Straight Channel Posts00754-03-306
Corner Channel Posts00755-03-306
Round Support Posts, M600756-03-305
Round Support Posts, UNC00842-03-305