1. Safety
by barriers. If human access is possible in an unsupervised environment, the horizontal or vertical clearances shall be increased to
prevent exposure to the hazard distance zone.
In addition for temporary installations (e.g.: rental and staging, lease, events …) the following requirements apply:
•
This product can only be installed by Barco or sold or leased only to valid laser light show variance holders. In other words
our installers are required to have an approved laser light show variance. Such installers may currently hold a valid variance
for production of Class IIIb and IV laser light shows and/or for incorporation of the RG3 LIPs into their shows. Dealers and
distributors are also required to obtain a valid laser light show variance.
•
This product shall be located in such a way that all propagating beam paths within the Restriction Zone, and the audience can
be directly observed at all times.
•
Effects other than front or rear screen projections shall not be performed.
•
Communication shall be maintained with other personnel assisting in surveillance of the LIP projection.
•
In the event of any unsafe condition, immediately terminates (or designate the termination) of LIP projection light.
Install one or more readily accessible controls to immediately terminate LIP projection light. The power input at the projector side
is considered as a reliable disconnect device. When required to switch off the projector, disconnect the power cord at the projector
side. In case the power input at the projector side is not accessible (e.g. truss mount), the socket outlet supplying the projector shall
be installed nearby the projector and be easily accessible, or a readily accessible general disconnect device shall be incorporated
in the
fi
xed wiring.
Laser light shows can be requested via the FDA online eSubmitter portal or via FDA Form FDA Form 3147 referencing to Barco’s
variance approval 2016-V-0144.
1.5
HD for fully enclosed projection systems
HD
Hazard Distance (HD) is the distance measured from the projection lens at which the intensity or the energy per surface
unit becomes lower than the applicable exposure limit on the cornea or on the skin. The light beam is considered (to
be) unsafe for exposure if the distance from a person to the light source is less than the HD.
Restriction Zone (RZ) based on the HD
The projector is also suitable for rear projection applications; projecting a beam onto a defuse coated projection screen. As displayed
in image 1-3 two areas should be considered: the restricted enclosed projection area (RA) and the observation area (TH).
RA
TH
sw
PD
HD
DIFFUSE
sw
RZ
sw
sw
PR
HD
REFLECTION
RESTRICTED
AREA
RESTRICTED
AREA
Image 1-3
RA Restricted Access location (enclosed projection area).
PR Projector.
TH Theater (observation area).
RZ Restriction Zone.
PD Projection Distance.
SW Separation Width. Must be minimum 1 meter.
For this type of setup 3 different HD shall be considered:
•
HD as discussed in "High Brightness precautions: Hazard Distance (HD)", page 7 , relevant for intrabeam exposure.
•
HD
re
fl
ection
: the distance that has to be kept restrictive related to the re
fl
ected light from the rear projection screen.
•
HD
diffuse
: the relevant distance to be considered while observing the diffuse surface of the rear projection screen.
As described in "High Brightness precautions: Hazard Distance (HD)", page 7 , it is mandatory to create a restricted zone within
the beam areas closer than any HD. In the enclosed projection area the combination of two restricted zones are relevant: The
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