![background image](http://html1.mh-extra.com/html/barco/f70-w8/f70-w8_user-manual_4142938043.webp)
4. Physical Installation
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
Scheimp
fl
ug adjustment points are located on the lens mount. The F70 has three (3) set screws and three (3) adjustment screws.
When to apply Scheimp
fl
ug?
Scheimp
fl
ug correction procedures may only be carried out by suitably trained and experienced technicians.
A Scheimp
fl
ug correction should only be applied when the overall focus of the projected image is not equally sharp (for example, if the
projector is
NOT in parallel
with the screen or as a result of a previously misaligned Scheimp
fl
ug). Be aware that the consequence of
applying Scheimp
fl
ug correction upon a screen not in parallel with the projector is that the projected image differs from the rectangle
shaped image. In other words “
distortion
” of the projected image occurs.
Masking
will be required to solve the distortion.
The disadvantage of Masking is loss of content. Therefore it is
strongly recommended
to place the projector
in parallel
with the
projection screen and use the
SHIFT
functionality of the Lens Holder to match the projected image with the projection screen. If the
SHIFT range is not suf
fi
cient then the projector can be tilted and Scheimp
fl
ug can be applied.
4.9
Scheimp
fl
ug adjustment procedure
C
AUTION
:
A Scheimp
fl
ug adjustment should only be carried out by properly quali
fi
ed and experienced pro-
jection specialists. A poor Scheimp
fl
ug adjustment may result in an extremely degraded image and will require
factory—servicing to the projector.
Necessary tools
•
Allen key, hex size 4
•
Allen key, hex size 6
Preparation
1. Prepare the test area. Barco recommends a projector-screen distance of 2 metres be used for all Scheimp
fl
ug adjustments.
Verify that the throw ratio of the installed lens matches the requirements of the installation area (projection distance and screen
size).
2. Check that the lens is correctly installed, and lens shift is in centre position.
3. If the installed lens has Iris control, open the Iris all the way up.
4. Open the focus ring all the way up.
5. Go to Main Menu / Test Patterns / Full Screen and select to display the Focus test pattern.
6. Zoom the lens to its widest opening (maximum image size on the screen).
Apply a Scheimp
fl
ug correction
1. Loosen the three set screws (reference 1b, 2b, 3b). Use a size 6 hex key to do this.
601–426 F70 SERIES 16/06/2017
39
Summary of Contents for F70-W8
Page 1: ...F70 Series User Manual 601 426 00 16 06 2017...
Page 56: ...7 Image menu 52 601 426 F70 SERIES 16 06 2017...
Page 64: ...9 Settings menu 60 601 426 F70 SERIES 16 06 2017...
Page 66: ...10 Status menu Lists the projector IP address 62 601 426 F70 SERIES 16 06 2017...
Page 68: ...11 Reset Menu 64 601 426 F70 SERIES 16 06 2017...
Page 70: ...12 User Maintenance 66 601 426 F70 SERIES 16 06 2017...
Page 72: ...13 Cleaning the projector 68 601 426 F70 SERIES 16 06 2017...