R5906852 /09
F80
20
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 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.
As described in
“High Brightness precautions: Hazard Distance (HD)”, page 17
, 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 restricted zone of the projected beam toward the screen; taking into
account 1 meter Separation Width (SW) from the beam onward. Combined with the restricted zone related to
the rear reflection from the screen (HD
reflection
); also taking into account a 1 meter lateral separation.
The HD
reflection
distance equals 25% of the difference between the determined HD distance and the projection
distance to the rear projection screen. To determine the HD distance for the used lens and projector model see
chapter
“HD in function of the lens Throw Ratio (TR)”, page 20
.
HD
reflection
= 25% (HD – PD)
The light emitted from the screen within the observation shall never exceed the RG2 exposure limit,
determined at 10 cm. The HD
diffuse
can be neglected if the measured light at the screen surface is below 5000
cd/m² or 15000 LUX.
1.4.4 HD in function of the lens Throw Ratio (TR)
TR (Throw Ratio)
The ratio of the distance to the screen (throw) to the screen width.
HD versus Throw Ratio
0
1
2
3
4
5
1
1
.2
1
.4
1
.6
1
.8
2
2
.2
2
.4
2
.6
2
.8
3
3
.2
3
.4
3
.6
3
.8
4
4
.2
4
.4
4
.6
4
.8
5
5
.2
5
.4
5
.6
5
.8
6
6
.2
6
.4
6
.6
6
.8
7
7
.2
7
.4
7
.6
7
.8
8
8
.2
8
.4
8
.6
8
.8
9
9
.2
9
.4
9
.6
9
.8
1
0
H
a
za
rd
d
is
ta
n
ce
[
m
]
Throw Ra!o
F80-Q12, F80-4K12
F80-Q9, F80-4K9
F80-Q7, F80-4K7
1
2
3
1
2
3
Image 1–4
Summary of Contents for F80-Q12
Page 1: ...ENABLING BRIGHT OUTCOMES User Manual F80 ...
Page 22: ...R5906852 09 F80 22 Safety ...
Page 34: ...R5906852 09 F80 34 Getting Started ...
Page 44: ...R5906852 09 F80 44 Remote Control Unit ...
Page 56: ...R5906852 09 F80 56 GUI Introduction ...
Page 62: ...R5906852 09 F80 62 GUI Source ...
Page 78: ...R5906852 09 F80 78 GUI Image ...
Page 146: ...R5906852 09 F80 146 GUI System Settings ...
Page 156: ...R5906852 09 F80 156 Advanced Settings ...
Page 160: ...R5906852 09 F80 160 GUI Status menu ...
Page 176: ...R5906852 09 F80 176 Specifications ...
Page 181: ...181 R5906852 09 F80 Image B 1 HDCP revision information Connector specifications ...
Page 182: ...R5906852 09 F80 182 Connector specifications ...
Page 186: ...R5906852 09 F80 186 Control interface specifications ...
Page 194: ...R5906852 09 F80 194 Regulatory information ...
Page 205: ...205 R5906852 09 F80 DMX chart F ...
Page 209: ......