S P E C F I L E
Portable LCD Projector
Standard setting-up positions
PT-LB80
unit : mm (inch)
ø49
Upper edge of projected image |
ø43
H
| L |
| 117 |
Projected image | |
| L |
H |
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Lower edge of projected image |
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L: Distance to screen
H:Height from the edge of screen to center of lens
NOTE:
W |
| 70 | 9/16˝) |
| L |
| 65 (2- |
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| Projected image | 81 |
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Projection size | Projection distance (L) |
| Height from the edge of screen |
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(diagonal) | Min (wide) | Max (telephoto) | to centre of lens (H) | ||||||||
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0.84 | m / | 33˝ | – | 1.1 | m / | 3.7´ | 0.05 | m / 0.17´ | |||
1.02 | m / | 40˝ | 1.1 m / | 3.8´ | 1.4 | m / | 4.5´ | 0.06 | m / | 0.21´ |
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1.27 | m / | 50˝ | 1.4 m / | 4.7´ | 1.7 | m / | 5.7´ | 0.08 | m / | 0.26´ |
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1.52 | m / | 60˝ | 1.7 m / | 5.7´ | 2.1 | m / | 6.9´ | 0.10 | m / | 0.32´ |
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1.78 | m / | 70˝ | 2.0 m / | 6.7´ | 2.5 | m / | 8.1´ | 0.11 | m / | 0.37´ |
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2.03 | m / | 80˝ | 2.3 m / | 7.6´ | 2.8 | m / | 9.2´ | 0.13 | m / | 0.42´ |
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2.29 | m / | 90˝ | 2.6 m / | 8.6´ | 3.2 | m / 10.4´ | 0.14 | m / 0.47´ |
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2.54 | m / 100˝ | 2.9 m / | 9.6´ | 3.5 | m / 11.6´ | 0.16 | m / 0.53´ |
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3.05 | m / 120˝ | 3.5 m / 11.5´ | 4.2 | m / 13.9´ | 0.19 | m / 0.63´ |
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3.81 | m / 150˝ | 4.4 m / 14.4´ | 5.3 | m / 17.5´ | 0.24 | m / 0.79´ |
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5.08 | m / 200˝ | 5.9 m / 19.3´ | 7.1 | m / 23.3´ | 0.32 | m / 1.05´ |
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6.35 | m / 250˝ | 7.4 m / 24.2´ | 8.9 | m / 29.2´ | 0.40 | m / 1.32´ |
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7.62 | m / 300˝ | 8.8 m / 29.0´ | 10.7 | m / 35.1´ | 0.48 | m / 1.58´ | |||||
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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 0.0296 | – | 0.039 |
maximum | L (m) = (diagonal screen size in inches) x 0.0358 | – | 0.047 |
NOTE: Distances calculated with the above equations will include a slight error.
Installable Angle
Install the projector at an angle within the range shown below.
• Vertical direction | • Vertical direction | |
The projector | +30° | The projector may not be angled horizontally. |
may be installed |
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at a vertical |
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angle of ±30°. |
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| 30° |
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0°
As of October 2008 |
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