R5906113 /08
UDX
16
1.4 High Brightness precautions: Hazard Distance
(HD)
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 20.
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 the 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.
Summary of Contents for UDX
Page 1: ...ENABLING BRIGHT OUTCOMES Installation Manual UDX...
Page 8: ...R5906113 08 UDX 8...
Page 32: ...R5906113 08 UDX 32 Installation preparations...
Page 40: ...R5906113 08 UDX 40 Pulse Remote Control Unit...
Page 86: ...R5906113 08 UDX 86 WiFi GSM Module...
Page 92: ...R5906113 08 UDX 92 Laser range finder camera kit...
Page 102: ...R5906113 08 UDX 102 Getting Started...
Page 130: ...R5906113 08 UDX 130 Specifications...
Page 131: ...131 R5906113 08 UDX Stacking UDX projectors B...
Page 134: ...R5906113 08 UDX 134 Stacking UDX projectors...
Page 144: ...R5906113 08 UDX 144 Overview video timings for video interfaces...