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4. Installation
4.7
Lens brightness
About lens brightness
While changing the projection lens, or the zoom ratio of a single projection lens, the light output on the screen decreases. The table
below gives an overview of the brightness to be expected compared to the brightest lens in our gamma (= CLD 1.6–2.4 lens in WA
position). For other lenses or zoom ratios, the table below gives an idea of the percentage of light remaining. Scheimp
fl
ug lenses
have the same light output as the normal projection lenses.
Lens
WA
TP
CLD 1.2-1.6:1
87%
68%
CLD 1.6-2.4:1
100%
80%
CLD 2.4-4.3:1
90%
75%
QCLD 0.85:1
82%
82%
QCLD 1.1-1.3:1
79%
83%
Table 4-4
Brightness obtained with different projection lenses
The evaluated values in the above table were obtained using on-axis position and are based on center lumens.
ANSI lumen and off-axis position values are upto 10% lower.
4.8
Projector con
fi
guration
The different con
fi
gurations
Depending on the installation the projector can be mounted in different ways, the 4 different con
fi
gurations are:
1.
Rear/Ceiling
2.
Rear/Table
3.
Front/Ceiling
4.
Front/Table
1
2
3
4
Image 4-10
R59770324 SIM 5W 22/12/2011
23
Summary of Contents for SIM 5W
Page 1: ...SIM 5W User guide R59770324 06 22 12 2011 Downloaded From projector manual com Barco Manuals ...
Page 54: ...5 Setup 50 R59770324 SIM 5W 22 12 2011 Downloaded From projector manual com Barco Manuals ...
Page 194: ...Index 190 R59770324 SIM 5W 22 12 2011 Downloaded From projector manual com Barco Manuals ...