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| Installation |
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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 |
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that the lens center and screen center are aligned with each other, as shown in Figure |
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Ceiling Installation
Ceiling
Height
Projection Distance
Lens Center
x
| Screen | Lens Center |
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Floor Installation |
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Height | Screen | Lens Center |
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Lens Center |
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x |
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| Projection Distance |
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| Floor |
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Figure |
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If it is not possible to align the projector and screen as shown in Figure | Vertical Lens Shift | ||
projector’s lens shift (LENS) controls to center the image on the screen. Vertical lens shift is |
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generally expressed as a percentage of the screen height, as shown in Figure |
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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 3-3. Vertical Lens Shift (EXAMPLE ONLY)
Vidikron Vision 70 Series Owner’s Operating Manual | 17 |