Lenses; Lens Selection; Lens Formulas - Barco SLM R12 Owner's Manual

3.7 Lenses

Overview
• Lenses
•

Lens selection

•

Lens formulas

• Lens Installation
• Cleaning the lens
3.7.1 Lenses
Available lenses
TLD(1.6–2.0:1)
TLD(2.0–2.8:1)
TLD(2.8–5.0:1)
TLD(1.2:1)
TLD(0.8:1)
TLD(5.0–8.0:1)
TLD HB(0.8:1)
TLD HB(1.6–2.0:1)
TLD HB(2.0–2.8:1)
TLD HB(2.8–5.0:1)
TLD HB(5.0–8.0:1)
3.7.2 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.
3.7.3 Lens formulas
Formulas for the standard TLD HB lenses
TLD HB(0.8:1)
TLD HB(1.2:1)
TLD HB(1.6–2.0:1)
TLD HB(2.0–2.8:1)
TLD HB(2.8–5.0:1)
TLD HB(5.0–8.0:1)
R5976654 SLM R12+ 27/01/2005
Metric formulas (meter)
PD=0.77xSW+0.05
PD=1.11xSW-0.01
PD =1.47xSW-0.09
min
PD =1.85xSW-0.13
max
PD =1.85xSW-0.17
min
PD =2.62xSW-0.24
max
PD =2.58xSW-0.16
min
PD =4.71xSW-0.38
max
PD =4.52xSW-0.01
min
PD =7.53xSW-0.29
max
3. Installation Guidelines
R9840670
R9840680
R9840690
R9840770
R9840900
R9840910
R9842040
R9842060
R9842080
R9842100
R9842120
Inch formulas (inch)
PD=0.77SW+1.97
PD=1.11xSW-0.39
PD =1.47xSW-3.54
min
PD =1.85xSW-5.12
max
PD =1.85xSW-6.69
min
PD =2.62xSW-9.45
max
PD =2.58xSW-6.30
min
PD =4.71xSW-14.96
max
PD =4.52xSW-0.39
min
PD =7.53xSW-11.42
max
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