![background image](http://html.mh-extra.com/html/barco/hdx-4k/hdx-4k_user-manual_474162039.webp)
4. Lenses & Lens selection
Image 4-17
4.6
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 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).
SC
R
E
EN
DMD
Lp1
Lp2
Fp1
Fp2
SC
R
E
EN
DMD
Lp3
Lp4
Fp3
Fp4
(Scheimpflug)
Image 4-18
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.
R5906070 HDX 4K 23/09/2016
35
Summary of Contents for HDX 4K
Page 1: ...HDX 4K User guide R5906070 00 23 09 2016 ...
Page 4: ......
Page 24: ...2 Installation preparations 20 R5906070 HDX 4K 23 09 2016 ...
Page 44: ...4 Lenses Lens selection 40 R5906070 HDX 4K 23 09 2016 ...
Page 50: ...5 Input Communication 46 R5906070 HDX 4K 23 09 2016 ...
Page 60: ...7 Graphic User Interface GUI 56 R5906070 HDX 4K 23 09 2016 ...
Page 62: ...8 GUI Source 58 R5906070 HDX 4K 23 09 2016 ...
Page 66: ...9 GUI Image 62 R5906070 HDX 4K 23 09 2016 ...
Page 72: ...10 GUI Installation 68 R5906070 HDX 4K 23 09 2016 ...
Page 78: ...12 Maintenance 74 R5906070 HDX 4K 23 09 2016 ...
Page 90: ...13 Servicing 86 R5906070 HDX 4K 23 09 2016 ...
Page 94: ...A Specifications 90 R5906070 HDX 4K 23 09 2016 ...