should be done in a room or in an enclosed or delimited place for this
purpose.
The access of room and openings to the outside must not be located
in the axis of a direct beam.
The floor must be free of obstacles. The causes of accidental reflection
and scattering of laser beams must be removed (misplaced windows,
furniture or objects with polished faces).
The paintings (walls, partitions, ceilings ...) and flooring should
preferably be matt. The diffuse reflections of class 4 lasers, focused
beams of lasers of class 3 to visible or near infrared light should be
considered dangerous and treated as such.
When using powerful lasers (Classes 3 to focused beam or 4),
eliminate the beam potential impact on flammable materials (wood,
paper, fabric or plastic) that can be in from fire in power densities of
the order of several W.cm-2 applied for a few seconds.
The access to the laser emission zones should be reported using the
signs in accordance with the Ministerial Decree of 4 November 1993
"Signs of safety and health in the workplace" and the NF X 08-003
"Symbols graphics and symbols - colors and safety signs "of December
1994. This signaling is completed by the words of the class of laser
product and the instructions provided in the NF EN 60825-1 standard.
Such access can be controlled, at least when lasers are operating.
Emissions control : the control panel should be placed outside the
locations exposed to hazardous emissions. The control of lasers in
Classes 3 and 4 should be under the control of a key control, removed
when the device is not in use and owned by a qualified person.
Disclaimer : The use of this device is exclusively for professional
activities show and display.
It is forbidden to allow projecting the beams to the audience and any
areas accessible by persons without appropriate eye and skin
protective items. It is forbidden to use this device for any other
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