Installation
Ceiling Installation
Height
x
Lens Center
Ceiling
Projection Distance
Lens Center
Screen
Floor Installation
Height
Lens Center |
x |
Screen
Lens Center
Projection Distance
Floor
Figure 3-3. Projector Placement
You can use the lens shift controls on the projector to center the image on the screen. | Lens Shift |
Lens shift is generally expressed as a percentage of the screen height or width, as shown |
|
in Figure |
|
Screen Center
0%
50% Height
Lens Shift
(0.5 x H)
100% Height
Lens Shift
(1.0 x H)
Note: This is a general example of lens shift. Lenses vary in their shift capabilities. No particular
lens or projector is used in this example.
Figure 3-4. Vertical Lens Shift (Example Only)
Vertical Lens Shift: The LS-HB provides up to 25% of upward vertical lens shift and up to 60% of downward vertical lens shift. For example, with a 100 x 56 inch (1.78:1) screen, you can shift the image up to 14.00 inches (0.36 meters) above or 33.60 inches (0.85 meters) below the screen center.
Runco | 19 |