| Installation |
|
|
Proper placement of the projector relative to the screen will yield a rectangular, | Vertical and Horizontal |
Position | |
Ideally, the projector should be positioned perpendicular to the screen and in such a way |
|
that the lens center and screen center are aligned with each other, as shown in Figure |
|
Ceiling Installation
Ceiling
Height
Projection Distance
Lens Center
x
|
|
|
|
| Screen | Lens Center |
| |||
|
|
|
|
|
|
|
|
|
|
|
| Floor Installation |
|
|
|
|
|
|
|
| |
| Height |
|
| Screen | Lens Center |
| ||||
|
|
|
|
|
|
|
|
|
|
|
| Lens Center |
|
|
|
|
|
|
|
|
|
| x |
|
|
| Projection Distance |
|
|
|
| |
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Floor |
| ||
Figure |
|
|
|
|
| |||||
If it is not possible to align the projector and screen as shown in Figure | Vertical and Horizontal Lens | |||||||||
lens shift controls to center the image on the screen. Lens shift is generally expressed as a | Shift | |||||||||
percentage of the screen height or width, as shown in Figure |
|
Screen Center
0%
50% Height
Lens Shift
(0.5 x H)
Base plate
to lens center =
approx.
on the amount of lens shift)
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 3-3. Vertical Lens Shift (EXAMPLE ONLY)
Vidikron Vision Model 110 Installation/Operation Manual | 17 |