Setting-up
Projection Schemes
Any of the following four projection schemes can be used with the
Projection Scheme 2
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| Table standing | Ceiling mount |
Scheme 1 | Front projection | (Default position) |
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Projection | Rear projection |
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Installation Geometry
After the projector is roughly positioned, picture size and vertical picture positioning can be finely adjusted with the powered zoom lens and lens tilt mechanism.
Side view
With optional ceiling mount | 346 | 438 | |
bracket | |||
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H |
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L |
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SH | 276 |
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H
Screen
L:Projection distance SH: Image height SW: Image width
H:Distance from centre of lens to bottom edge of projected image.
Top view
SW | L |
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| 87.5 | 157 | 314 |
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Screen | 175 |
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| [unit : mm] | |
Projection Distances
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| Unit : m |
Screen Size (4 : 3) | Projection distance: L | Height | |||
Diagonal length | Height (SH) | Width (SW) | Wide (LW) | Telephoto (LT) | position: H |
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0.76 | 0.46 | 0.61 | — | 1.4 | 0.02 to 0.22 |
1.02 | 0.61 | 0.81 | 1.4 | 1.9 | 0.03 to 0.30 |
1.27 | 0.76 | 1.02 | 1.8 | 2.4 | 0.04 to 0.38 |
1.52 | 0.91 | 1.22 | 2.1 | 2.9 | 0.05 to 0.45 |
2.03 | 1.22 | 1.63 | 2.9 | 3.9 | 0.06 to 0.60 |
2.54 | 1.52 | 2.03 | 3.6 | 4.9 | 0.08 to 0.76 |
3.05 | 1.83 | 2.44 | 4.3 | 5.9 | 0.09 to 0.91 |
3.56 | 2.13 | 2.84 | 5.1 | 6.9 | 0.11 to 1.06 |
4.06 | 2.44 | 3.25 | 5.8 | 7.9 | 0.12 to 1.21 |
4.57 | 2.75 | 3.66 | 6.6 | 8.9 | 0.14 to 1.37 |
5.08 | 3.05 | 4.06 | 7.3 | 9.9 | 0.15 to 1.52 |
5.51 | 3.35 | 4.47 | 8.1 | 10.9 | 0.17 to 1.67 |
6.10 | 3.66 | 4.88 | 8.8 | 11.9 | 0.18 to 1.82 |
6.60 | 3.96 | 5.28 | 9.5 | 12.9 | 0.20 to 1.98 |
7.11 | 4.27 | 5.69 | 10.3 | 13.9 | 0.21 to 2.13 |
7.62 | 4.57 | 6.10 | 11.0 | 14.9 | 0.23 to 2.28 |
If the screen size (diagonal) is SD, then the following formulas is first used to obtain the screen width (SW).
SW = (SD x 0.0254) x 4 ⎟ 5 (SD unit is inches) The value for SW obtained above can then be used with the following function to calculate the projection distance for the wide lens position (LW) and the projection distance for the telephoto lens position (LT).
LW = 1.831 x SW - 0.071 LT = 2.449 x SW - 0.066
For 16 : 9 aspect rations, the following formal can be used to calculate the screen width (SW).
SW = (SD x 0.0254) x 16 ⎟ 327
Note
•The dimensions in the table above and the values obtained from the above formulas may contain slight errors.
•It is recommended that you use the projection distance for the wide lens position (except in cases where the diagonal picture size is 0.762 m).
•The above dimensions are the case when the aspect ratio is 4:3. When an SXGA signal is input and projected, the right and left ends of the picture will be blanked the aspect ratio will be 5:4.
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