Scheimpflug (Boresight) Adjustment - Barco F90–W13 User Manual

4. Physical installation
Throw distance, FLD+ WUXGA
7.50
7.00
6.50
6.00
5.50
5.00
4.50
4.00
3.50
3.00
2.50
2.00
1.50
1.00
0.50
0.00
Image 4-7
4.7 Scheimpflug (Boresight) adjustment
What is Scheimpflug?
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 Scheimpflug'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).
Lp1
Lp2
DMD
Image 4-8
Scheimpflug principle
32
Fp1
Fp2
DMD
Lp3
Lp4
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
Projection distance
Fp4
Fp3
(Scheimpflug)
601–0400–00 F90–W13 18/08/2016
Screen diagonal
14.00
13.00
12.00
11.00
10.00
9.00
8.00
6.00
5.00
4.00
3.00
2.00
1.00
0.00