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15
R5911438 /09
UDM
1.4 High Brightness precautions: Hazard Distance
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 HD depends on the amount of lumens produced by the projector and the type of lens installed. See
chapter
“HD in function of modifying optics”, page 18
To protect untrained end users (as cinema visitors, spectators) the installation shall comply with the following
installation requirements: Operators shall control access to the beam within the hazard distance or install the
product at a height that will prevent spectators' eyes from being in the hazard distance. Radiation levels in
excess of the limits will not be permitted at any point less than 2.0 meter (SH) above any surface upon which
persons other than operators, performers, or employees are permitted to stand or less than 1.0 meter (SW)
lateral separation from any place where such persons are permitted to be. In environments where
unrestrained behavior is reasonably foreseeable, the minimum separation height should be greater than or
equal to 3.0 meter to prevent potential exposure, for example by an individual sitting on another individual's
shoulders, within the HD.
These values are minimum values and are based on the guidance provided in IEC 62471-5:2015 section
6.6.3.5.
The installer and user must understand the risk and apply protective measures based upon the hazard
distance as indicated on the label and in the user information. Installation method, separation height, barriers,
detection system or other applicable control measure shall prevent hazardous eye access to the radiation
within the hazard distance.
For example, projectors that have a HD greater than 1 m and emit light into an uncontrolled area where
persons may be present should be positioned in accordance with “the fixed projector installation” parameters,
resulting in a HD that does not extend into the audience area unless the beam is at least 2.0 meter above the
floor level. In environments where unrestrained behavior is reasonably foreseeable, the minimum separation
height should be greater than or equal to 3.0 meter to prevent potential exposure, for example by an individual
sitting on another individual's shoulders, within the HD. Sufficiently large separation height may be achieved
by mounting the image projector on the ceiling or through the use of physical barriers.
RA
TH
HD
SW
SW
TOP VIEW
(B)
EXIT
SH
RA
PR
TH
HD
SIDE VIEW
(A)
RZ
H<SH
H>SH
LRZ
LRZ
RZ
Image 1–2
A
Side view
B
Top view
RA
Restricted Access location (boot area of projector).
TH
Theater
RZ
Restriction Zone in the theater
HD
Hazard Distance
LRZ
Length Restriction Zone in the theater
H
Height between surface floor and the light beam
SH
Separation Height
SW
Separation Width
Summary of Contents for UDM
Page 1: ...ENABLING BRIGHT OUTCOMES Installation manual UDM...
Page 4: ......
Page 22: ...R5911438 09 UDM 22 Safety information...
Page 28: ...R5911438 09 UDM 28 Installation process...
Page 39: ...39 R5911438 09 UDM 360 360 Image 3 9 Prepare to install...
Page 44: ...R5911438 09 UDM 44 Prepare to install...
Page 60: ...R5911438 09 UDM 60 Installation procedures...
Page 61: ...61 R5911438 09 UDM Lenses 5...
Page 76: ...R5911438 09 UDM 76 Lenses...
Page 80: ...R5911438 09 UDM 80 Flight case and rigging frame...
Page 86: ...R5911438 09 UDM 86 Pulse SFP input use cases...
Page 92: ...R5911438 09 UDM 92 Projector covers...
Page 98: ...R5911438 09 UDM 98 Glossary...
Page 100: ...R5911438 09 UDM 100 List of tools...
Page 104: ...R5911438 09 UDM 104 Index...
Page 105: ......