S P E C F I L E
Standard setting-up positions
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| Upper edge of projected image |
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| L |
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| L |
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| Lower edge of projected image |
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| L |
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| Projected image |
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| 67.5 |
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Projection size | Projection distance (L) |
| Height from the edge of screen | ||||||||
(diagonal) | Min (wide) | Max (telephoto) |
| to center of lens (H) | |||||||
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0.84 | m / | 33˝ | – | 1.1 | m / | 3.8´ | 0 | – 0.07 m / 0 – | 0.2´ | ||
1.02 | m / | 40˝ | 1.2 m / | 3.9´ | 1.4 | m / | 4.6´ | 0 | – 0.09 m / 0 – | 0.3´ | |
1.27 | m / | 50˝ | 1.5 m / | 4.9´ | 1.8 | m / | 5.9´ | 0 | – 0.11 m / 0 – | 0.4´ | |
1.52 | m / | 60˝ | 1.8 m / | 5.9´ | 2.1 | m / | 7.1´ | 0 | – 0.13 m / 0 – | 0.4´ | |
1.78 | m / | 70˝ | 2.1 m / | 6.9´ | 2.5 | m / | 8.3´ | 0 | – 0.15 m / 0 – | 0.5´ | |
2.03 | m / | 80˝ | 2.5 m / | 7.9´ | 2.9 | m / | 9.5´ | 0 | – 0.17 m / 0 – | 0.6´ | |
2.29 | m / | 90˝ | 2.8 m / | 8.9´ | 3.2 | m / 10.7´ | 0 | – 0.20 m / 0 – | 0.6´ | ||
2.54 | m / 100˝ | 3.1 m / | 9.9´ | 3.6 | m / 11.9´ | 0 | – 0.22 m / 0 – | 0.7´ | |||
3.05 | m / 120˝ | 3.7 m / 11.9´ | 4.3 | m / 14.3´ | 0 | – 0.26 m / 0 – | 0.9´ | ||||
3.81 | m / 150˝ | 4.6 m / 14.9´ | 5.4 | m / 17.9´ | 0 | – 0.33 m / 0 – | 1.1´ | ||||
5.08 | m / 200˝ | 6.1 m / 19.9´ | 7.3 | m / 24.0´ | 0 | – 0.44 m / 0 – | 1.4´ | ||||
6.35 | m / 250˝ | 7.6 m / 24.9´ | 9.1 | m / 30.0´ | 0 | – 0.54 m / 0 – | 1.8´ | ||||
7.62 | m / 300˝ | 9.1 m / 29.9´ | 10.9 | m / 36.0´ | 0 | – 0.65 m / 0 – | 2.1´ | ||||
PT-LB51S
unit : mm (inch)
L: Distance to screen
E:Height from the edge of screen to center of lens
NOTE:
Illustrations show the projector installed using optional ceiling bracket.
This illustration is not drawn to scale.
*This distance is especially recommend- ed for
NOTE:
Values shown are approximate.
The value for L (distance to screen) varies slightly depending on the zoom lens characteristics.
When the shortest projection distance is used, a small amount of distortion may occur in the image due to the zoom lens characteristics.
Calculation of the projection distance
For a screen size different from the above, use the equation below to calculate the projection distance.
Aspect ratio 4 : 3 |
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minimum | L (m) = (diagonal screen size in inches) x 0.0304 | - 0.0290 |
maximum | L (m) = (diagonal screen size in inches) x 0.0368 | - 0.0410 |
Aspect ratio 16 : 9 |
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minimum | L (m) = (diagonal screen size in inches) x 0.0332 | - 0.0320 |
maximum | L (m) = (diagonal screen size in inches) x 0.0401 | - 0.0380 |
As of October 2008 |
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