19
R5905752 /16
DP2K C
P
R
RZ
RESTRICTED
AREA
R
E
S
T
R
IC
T
E
D
A
R
E
A
Image 1
–
3
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
4 two areas should be considered: the restricted enclosed
projection area (RA) and the observation area (TH).
RA
TH
sw
PD
HD
DIFFUSE
s
w
RZ
s
w
s
w
PR
HD
REFLECTION
RESTRICTED
AREA
R
E
S
T
R
IC
T
E
D
A
R
E
A
Image 1
–
4
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
, page 17, relevant for intrabeam
exposure.
•
HD
reflection
: the distance that has to be kept restrictive related to the reflected light from the rear projection
screen.
•
HD
diffuse
: the relevant distance to be considered while observing the diffuse surface of the rear projection
screen.
Summary of Contents for DP2K C
Page 1: ...ENABLING BRIGHT OUTCOMES User and Installation manual For DP2K 12C DP2K 15C DP2K 20C DP2K C...
Page 6: ......
Page 10: ...R5905752 16 DP2K C 10...
Page 38: ...R5905752 16 DP2K C 38 Physical installation...
Page 56: ...R5905752 16 DP2K C 56 Lamp Lamp House...
Page 82: ...R5905752 16 DP2K C 82 Input communication...
Page 84: ...R5905752 16 DP2K C 84 Image 7 1 ICMP X...
Page 120: ...R5905752 16 DP2K C 120 Communicator touch panel...
Page 162: ...R5905752 16 DP2K C 162 Specifications...
Page 174: ...R5905752 16 DP2K C 174 Environmental information...
Page 178: ...R5905752 16 DP2K C 178 Glossary...
Page 183: ......