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1. Safety
As described in "High Brightness precautions: Hazard Distance (HD)", page 8 , it is mandatory to create a restricted zone within
the beam areas closer than any NOHD. 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 re
fl
ection from the screen (HD
re
fl
ection
); also taking into account a 1 meter lateral
separation.
The HD
re
fl
ection
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 graphs in chapter "HD in function of the
lens Throw Ratio (TR)", page 11.
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
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
0.4
0.8
1.2
1.6
2.0
2.3
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
5.9
6.3
6.7
7.1
7.5
7.9
8.3
8.7
9.1
9.5
9.9
Hazar
d
d
ist
an
ce
[m
]
Throw Rao
F80-Q7, F80-4K7
F80-Ultra, F80-Q9, F80-4K9
Image 1-4
Graph shows Hazard Distance in meters versus Throw ratio of the lens
R5906852 F80 SERIES 21/09/2017
11
Summary of Contents for F80-4K7
Page 1: ...F80 series User Manual R5906852 00 21 09 2017...
Page 4: ......
Page 16: ...1 Safety 12 R5906852 F80 SERIES 21 09 2017...
Page 19: ...2 Remote Control Unit 1 Image 2 5 R5906852 F80 SERIES 21 09 2017 15...
Page 20: ...2 Remote Control Unit 16 R5906852 F80 SERIES 21 09 2017...
Page 26: ...3 Input Communication 22 R5906852 F80 SERIES 21 09 2017...
Page 36: ...4 Getting Started 32 R5906852 F80 SERIES 21 09 2017...
Page 40: ...5 Graphic User Interface GUI 36 R5906852 F80 SERIES 21 09 2017...
Page 74: ...9 GUI System Settings 70 R5906852 F80 SERIES 21 09 2017...
Page 76: ...10 Status menu 72 R5906852 F80 SERIES 21 09 2017...
Page 78: ...11 Maintenance 74 R5906852 F80 SERIES 21 09 2017...