Class 3B Laser Product Features
Class 3B laser products are required to have several specific safety features as part of their
design. These features are laid out in the British Standard on Laser Product Safety BS/EN 60825-
1:2007 and are a requirement of the product meeting CE approvals.
The important ones are listed below:-
1) Laser Safety Warning Labels
2) Key switch
3) Emissions Indicator
4) Remote Interlock Connector
Summary of each features purpose
The Class 3B laser projector should contain three Laser Safety Warning Labels; the starburst
symbol, aperture label, and the warning/classification label. The starburst is intended to show that
the product is a laser product, using the starburst symbol in the warning triangle. The aperture
label is located to indicate where the laser projector emits its beams. The warning/classification
label states the class of the laser product, the maximum output power, and the wavelength(s)
(colours) of the laser, along with a warning ” Laser Radiation – Avoid Exposure To The Beam”
The Keyswitch is provided to help limit the use of the laser projector to those that have key
access. Without the key inserted and in the on position, the laser will not emit an output. The idea
behind laser products having key switches is that only those people that are aware of how to
operate the laser safely should be given access to the keys.
The emissions indicator is intended to show when the laser is ready to produce a light output.
The Remote Interlock Connector will only allow the laser to function when the two pins are shorted
together. For lightshow use it is recommended by HS(G)95 laser safety guidance laser effects can
be overridden by a remote Emergency Stop switch. The remote interlock connector provides a
convenient way for such a switch to be easily added to the laser system, to provide this control.
Audience Scanning
Audience Scanning is the term commonly used to describe when laser effects are being directly
aimed at the viewing audience. This creates a very dramatic looking effect, as people can touch
the light, and look down smoky tunnels. But because the laser light can touch or scan past
people’s faces, it also carries a risk that it could cause damage to people’s eyesight, if they are
overexposed to the laser light.
Equinox Ripper Laser
Safety
