Barco FLM R22+, User Manual

Page: 28 / 243

3. Physical installation
3. Use the lens formulas to fi nd the best corresponding PD with regard to the measured projector-screen distance for the required
screen width SW.
Tip: Divide PD by SW to determine the approximate throw ratio. Choose a Lens, which captures the calculated throw ratio.
Use the lens formula of the chosen Lens to recalculate exactly.
SC
R
E
E
N
PD
SW
Image 3-16
3.2.3 Lens formulas
Formulas
Lens Throw ratio for
FLM HD Metric formulas (meter) Inch formulas (inch)
TLD HB (0.8 : 1)
0.7
PD = (0.71 x SW ) + 0.05 PD = (0.71 x SW ) + 1.97
TLD (1.2 : 1) 1.1 PD = (1.03 x SW ) - 0.01 PD = (1.03 x SW ) - 0.39
TLD+(1.2:1)
1.2
PD= (1.14 x SW) + 0.11 PD = (1.14 x SW) + 4.33
TLD HB (1.6 – 2.0
: 1) 1.35 – 1.70 PD
min
= (1.36 x SW ) - 0.09
PD
max
= (1.71 x SW ) - 0.13
PD
min
= (1.36 x SW ) - 3.54
PD
max
= (1.71 x SW ) - 5.12
TLD HB (2.0 – 2.8
: 1) 1.70 – 2.42 PD
min
= (1.71 x SW ) - 0.17
PD
max
= (2.42 x SW ) - 0.24
PD
min
= (1.71 x SW ) - 6.69
PD
max
= (2.42 x SW ) - 9.45
TLD HB (2.8 – 5.0
: 1) 2.42 – 4.35 PD
min
= (2.38 x SW ) - 0.16
PD
max
= (4.35 x SW ) - 0.38
PD
min
= (2.38 x SW ) - 6.30
PD
max
= (4.35 x SW ) - 14.96
TLD HB (5.0 – 8.0
: 1) 4.35 – 6.95 PD
min
= (4.17 x SW ) - 0.01
PD
max
= (6.95 x SW ) - 0.29
PD
min
= (4.17 x SW ) - 0.39
PD
max
= (6.95 x SW ) - 11.42
TLD+(7.5 – 11.2 :
1)
6.93 - 10.34
PD
min
= (6.93 x SW ) - 0.2
PD
max
= (10.34 x SW ) - 0.32
PD
min
= (6.93 x SW ) - 7.88
PD
max
= (10.34 x SW ) - 12.60
3.2.4 Lens installation
How to install a lens into the projector lens holder ?
1. Remove the foam rubber in the opening of the lens holder if not removed yet.
2. Take the lens assembly out of its packing material and remove the lens caps on both sides.
3. Place the lens holder in the “unlocked” position by moving the lens lock handle (A) towards the lens power supply socket (B) as
illustrated.
24 R59770179 FLM R22+ 15/03/2010