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Lens Shift
The LED1081 has a lens shift capability which allows the vertical movement of the image without moving the projector.
Lens shift is generally expressed as a percentage of the screen height. For ceiling mounted projectors, the lens can be
moved 120% (0.6V) downward, while the lens can be moved 120% (0.6V) up or down on a desktop mounted projector.
Vertical Lens Shift:
V
0.6V
0.6V
V
0.6V
Note

projector is used in this example.
Figure 3-5: Vertical Lens Shift (Example Only)