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3. Installation Guidelines
3.5.1 Lenses
Available lenses
TLD(1.6–2.0:1)
R9840670
TLD(2.0–2.8:1)
R9840680
TLD(2.8–5.0:1)
R9840690
TLD(1.2:1)
R9840770
TLD(0.8:1)
R9840900
TLD(5.0–8.0:1)
R9840910
TLD HB(0.8:1)
R9842040
TLD HB(1.6–2.0:1)
R9842060
TLD HB(2.0–2.8:1)
R9842080
TLD HB(2.8–5.0:1)
R9842100
TLD HB(5.0–8.0:1)
R9842120
3.5.2 Lens selection
How to select ?
1. Determine the required screen width.
2. Determine the approximate position of the project
or 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.
3.5.3 Lens formulas
Formulas
Metric formulas (meter) Inch formulas (inch)
TLD(0.8:1) PD=0.85xSW-0.05 PD=0.85SW-1.97
TLD(1.2:1) PD=1.22xSW-0.01 PD=1.22xSW-0.39
TLD(1.6–2.0:1) PD
min
=1.62xSW-0.09
PD
max
=2.03xSW-0.13
PD
min
=1.62xSW-3.54
PD
max
=2.03xSW-5.12
TLD(2.0–2.8:1) PD
min
=2.03xSW-0.17
PD
max
=2.88xSW-0.24
PD
min
=2.03xSW-6.69
PD
max
=2.88xSW-9.45
TLD(2.8–5.0:1) PD
min
=2.84xSW-0.16
PD
max
=5.18xSW-0.38
PD
min
=2.84xSW-6.30
PD
max
=5.18xSW-14.96
TLD(5.0–8.0:1) PD
min
=4.97xSW-0.01
PD
max
=8.28xSW-0.29
PD
min
=4.97xSW-0.39
PD
max
=8.28xSW-11.42
TLD HB(0.8:1) PD=0.85xSW-0.05 PD=0.85SW-1.97
TLD HB(1.2:1) PD=1.22xSW-0.01 PD=1.22xSW-0.39
TLD HB(1.6–2.0:1) PD
min
=1.62xSW-0.09
PD
max
=2.03xSW-0.13
PD
min
=1.62xSW-3.54
PD
max
=2.03xSW-5.12
TLD HB(2.0–2.8:1) PD
min
=2.03xSW-0.17
PD
max
=2.88xSW-0.24
PD
min
=2.03xSW-6.69
PD
max
=2.88xSW-9.45
16 R5976654 SLM R12+ 09022004