3. Installation Guidelines
3.8.2
Lens selection
How to select ?
1. Determine the required screen width.
2. Determine the approximate position of the projector in the projection room with regard to the screen and measure the projector-
screen distance (PD).
3. Use the lens formulas to find the best corresponding PD with regard to the measured projector-screen distance for the required
screen width.
3.8.3
Lens Formulas
Formulas
QLD Lenses:
Metric formulas (meter)
Inch formulas (inch)
QLD (1.5-2.0:1)
Min : PD = 1.53 x SW - 0.05
Max : PD = 2.05 x SW - 0.07
Min : PD = 1.53 x SW - 1.97
Max : PD = 2.05 x SW - 2.76
QLD (2.0-2.5:1)
Min : PD = 2.04 x SW - 0
Max : PD = 2.51 x SW - 0.02
Min : PD = 2.04 x SW - 0
Max : PD = 2.51 x SW - 0.79
QLD (2.5-4.0:1)
Min : PD = 2.50 x SW - 0.12
Max : PD = 4.01 x SW - 0.20
Min : PD = 2.50 x SW - 4.72
Max : PD = 4.01 x SW - 7.87
QLD (4.0-7.0:1)
Min : PD = 3.99 x SW - 0.05
Max : PD = 7.04 x SW - 0.23
Min : PD = 3.99 x SW - 1.97
Max : PD = 7.04 x SW - 9.06
QLD (5.6-12.0:1)
Min : PD = 5.64 x SW ± 0.15
Max : PD = 12.0 x SW ± 0.15
Min : PD = 5.64 x SW ± 5.9
Max : PD = 12.0 x SW ± 5.9
QLD (1.2:1)
PD = 1.24 x SW - 0.08
PD = 1.24 x SW - 3.14
LD Lenses:
Metric formulas (meter)
Inch formulas (inch)
LD (0.8:1)
PD = 0.64 x SW - 0.03
PD = 0.64 x SW - 1.18
LD (1.5-2.5:1)
Min : PD = 1.19 x SW - 0.01
Max : PD = 2.01 x SW - 0.05
Min : PD = 1.19 x SW - 0.39
Max : PD = 2.01 x SW - 1.97
LD (2.5-4.0:1)
Min : PD = 1.97 x SW - 0.01
Max : PD = 3.17 x SW - 0.05
Min : PD = 1.97 x SW - 0.39
Max : PD = 3.17 x SW - 1.97
Lens
program
to
calculate
the
projector
distance
is
available
on
the
BARCO
webside
:
http://www.barco.com/projection_systems/customer_services/lens_program.asp
3.8.4
Lens Installation
To install a projection lens, the projector must be switched ON.
Installation of QLD lenses :
1. Remove the foam rubber in the opening of the lens holder.
2. Switch on the projector.
3. Push 3x on the
HELP
key.
4. Push the
↑
key to pull up the lens bridge (zoom & focus part of the lens housing)
R5976333 BARCOELM R18 17092002
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Summary of Contents for BARCOELM R18
Page 1: ...BARCOPROJECTION BARCOELM R18 R9001990 OWNERS MANUAL 17092002 R5976333 02 ...
Page 4: ......
Page 8: ...Table of contents 4 R5976333 BARCOELM R18 17092002 ...
Page 28: ...3 Installation Guidelines 24 R5976333 BARCOELM R18 17092002 ...
Page 38: ...4 Connections 34 R5976333 BARCOELM R18 17092002 ...
Page 48: ...5 Getting Started 44 R5976333 BARCOELM R18 17092002 ...
Page 90: ...8 Installation Mode 86 R5976333 BARCOELM R18 17092002 ...
Page 104: ...9 Service Mode 100 R5976333 BARCOELM R18 17092002 ...
Page 106: ...10 Programmable Function Keys 102 R5976333 BARCOELM R18 17092002 ...
Page 110: ...11 Standard Source set up Files 106 R5976333 BARCOELM R18 17092002 ...