Barco Balder, Руководство по установке

Страница: 28 / 58

3. Physical Installation
3.7 Throw distance
Calculate the installation throw distance
Throw is the distance (D) measured from your projector lens to the screen. To calculate the throw distance for an installation, you
will need two pieces of data: the selected lens throw ratio (L) and the horizontal width (W) of the screen. For example, if the screen
width (W) is 2.4 meters and the projector lens has a throw ratio (L) of 0.99:1, then the throw distance (D) will be 2.38 meters.
Calculation: 2.4 x 0.99 = 2.38
The following graphs illustrate the image size (W) and projection distance (D) for each of the projector lenses.
Tolerances are typ/- 5% due to optical (lens) variation.
Throw distance, FLD+ / 4K UHD
Projection distance
Image width
m
12.00
11.00
10.00
9.00
8.00
7.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00
Screen diagonal
0.00
0.50
1.00
1.50
2.00
2.50
3.00
4.00
4.50
5.00
5.50
6.00
6.50
7.00
7.50
3.50
0.00
Image height
FLD+ L
ens 0.8 : 1 (EN42) (0.7 - 7m)
FLD+ L
ens 1.7 - 2.5 : 1 (EN41) (1.5 - 15m)
FLD+ L
ens 2.5 - 4.6 : 1 (EN44) (2.5 - 25 m)
FLD+ L
ens 1.2 - 1.7 : 1 (EN43) (1.5 - 15m)
FLD+ L
ens 0.8 - 1.21 : 1 (EN46) (0.7 - 7m)
FLD+ L
ens 0.65 : 1 (EN47) (0.5 - 4m)
FLD+ L
ens 0.8 - 1.21 : 1 (EN45) (5 - 30m)
1.00
2.00
3.00
4.00
5.00
6.00
8.00
9.00
10.00
11.00
12.00
13.00
14.00
Image 3-4
3.8 Scheimp fl ug (Boresight) adjustment
What is Scheimp fl ug?
The lens holder has to be adjusted so that the “sharp focus plane” of the projected image falls together with the plane of the screen
(Fp1
→ Fp2). This is achieved by changing the distance between the DMD plane and the lens plane (Lp1 → Lp2). The closer the lens
plane comes to the DMD plane the further the sharp focus plane will be. It can occur that you won’t be able to get a complete focused
image on the screen due to a tilt (or swing) of the lens plane with respect to the DMD plane. This is also known as Scheimp
fl ug’s
law. To solve this the lens plane must be placed parallel with the DMD plane. This can be achieved by turning the lens holder to
remove the tilt (or swing) between lens plane and DMD plane (Lp3
→ Lp4).
24 601–0442 BALDER 13/09/2017