![background image](http://html1.mh-extra.com/html/barco/dp2k-36blp/dp2k-36blp_user-and-installation-manual_4104727078.webp)
7. Lenses & lens holder
If yes, the Back Focal Length is correctly adjusted.
If no, repeat with step 4.
9. Is the projected image in the corners as sharp as in the middle?
If yes, proceed with the procedure "Fixation of the Lens Holder front plate", page 77.
If no, Scheimp
fl
ug adjustment is required. See procedure "Scheimp
ug adjustment", page 74, prior to
fi
xate the Lens Holder
front plate.
CAUTION
: Skip the action, in the Scheimp
fl
ug adjustment procedure, to turn the three Scheimp
fl
ug adjustment nuts
until the front of the nut is equally aligned with the front of the threaded rod!
7.7
Scheimp
fl
ug adjustment
What has to be done ?
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 sometimes happen 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 Sheimp
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).
SC
R
E
EN
DMD
Lp1
Lp2
Fp1
Fp2
SC
R
E
EN
DMD
Lp3
Lp4
Fp3
Fp4
(Scheimpflug)
Image 7-29
Scheimp
fl
ug principle
Scheimp
fl
ug principle
The "plane of sharp focus" can be changed so that any plane can be brought into sharp focus. When the DMD plane
and lens plane are parallel, the plane of sharp focus will also be parallel to these two planes. If, however, the lens
plane is tilted with respect to the DMD plane, the plane of sharp focus will also be tilted according to geometrical and
optical properties. The DMD plane, the principal lens plane and the sharp focus plane will intersect in a line below the
projector for downward lens tilt.
Scheimp
fl
ug adjustment points
4
1
2
3
d
D
c
C
A
a
B
b
Image 7-30
Scheimp
fl
ug adjustments
Indication on drawing
Function
4
Locking nut
74
R5906753 DPXK BLP SERIES 20/11/2017
Summary of Contents for DP2K-36BLP
Page 4: ......
Page 8: ...Table of contents 4 R5906753 DPXK BLP SERIES 20 11 2017...
Page 30: ...3 Installation process 26 R5906753 DPXK BLP SERIES 20 11 2017...
Page 40: ...4 Physical installation projector 36 R5906753 DPXK BLP SERIES 20 11 2017...
Page 120: ...10 Communicator Touch Panel Image 10 7 Connections 116 R5906753 DPXK BLP SERIES 20 11 2017...
Page 152: ...14 Maintenance 148 R5906753 DPXK BLP SERIES 20 11 2017...
Page 162: ...16 Color calibration 158 R5906753 DPXK BLP SERIES 20 11 2017...
Page 176: ...18 Specifications 172 R5906753 DPXK BLP SERIES 20 11 2017...