2. Configurations, requirements and restrictions
Shift range
The lens can be shifted with respect to the DMD (P) which result in a shifted image on the screen (Off-Axis). A 100% shift means that
the centre point of the projected image is shifted by half the screen size. In other words, the centre point of the projected image falls
together with the outline of the image in an On-Axis projection. Due to mechanical and optical limitations it’s recommended to keep
the shift values within the field of view (F) as illustrated below. Within these shift ranges the projector and lens perform excellently.
Configuring the projector outside these shift ranges will result in a slight decline of image quality.
U
+120%
-20%
-50% +50%
D
L R
P
F
U
D
SIDE VIEW
P
F
+120%
-20%
TOP VIEW
P
F
L
R
-50%
+50%
Image 2-9
Vertical and horizontal shift range
PDMD.
F Field of view.
It is mechanical possible to shift outside the recommended field of view, but it will result in a decline of image
quality depending on the used lens and the zoom position of the used lens. Furthermore, shifting too much
in both directions will result in a blurred image corner.
Best image quality is projected in the On-Axis configuration.
Horizontal and vertical projector tilt ranges
The projector can be rotated and mounted at any vertical angle. In other words, you can tilt the lens side of the projector as much
as desired for your application. Side t
o side tile, however, must not exceed ±15°. This limit ensures that the lamp in the projector
operates properly and safely. More tilting within area C is allowed but lamp flicker can happen.
MAX
MAX
15°
15°
360°
15°
15°
A
B
C
A
Image 2-10
A Tilting allowed without problems
B No tilting allowed in this area
C Tilting allowed but lamp flicker possible
16 R5905158 HDF W SERIES 10/07/2012
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