S P E C F I L E
Portable LCD Projector
Standard setting-up positions
PT-LB75NT
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´ | 0.08 | m / 0.28´ | |||
1.02 | m / | 40˝ | 1.1 m / | 3.7´ | 1.4 | m / | 4.5´ | 0.10 | m / | 0.33´ |
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1.27 | m / | 50˝ | 1.4 m / | 4.7´ | 1.7 | m / | 5.6´ | 0.13 | m / | 0.42´ |
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1.52 | m / | 60˝ | 1.7 m / | 5.6´ | 2.1 | m / | 6.8´ | 0.15 | m / | 0.50´ |
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1.78 | m / | 70˝ | 2.0 m / | 6.6´ | 2.4 | m / | 7.9´ | 0.18 | m / | 0.58´ |
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2.03 | m / | 80˝ | 2.3 m / | 7.6´ | 2.8 | m / | 9.1´ | 0.20 | m / | 0.67´ |
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2.29 | m / | 90˝ | 2.6 m / | 8.5´ | 3.1 | m / 10.2´ | 0.23 | m / 0.75´ |
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2.54 | m / 100˝ | 2.9 m / | 9.5´ | 3.5 | m / 11.4´ | 0.25 | m / 0.83´ |
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3.05 | m / 120˝ | 3.5 m / 11.4´ | 4.2 | m / 13.7´ | 0.30 | m / 1.00´ |
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3.81 | m / 150˝ | 4.3 m / 14.3´ | 5.2 | m / 17.1´ | 0.38 | m / 1.25´ |
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5.08 | m / 200˝ | 5.8 m / 19.0´ | 7.0 | m / 22.9´ | 0.51 | m / 1.67´ |
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6.35 | m / 250˝ | 7.3 m / 23.8´ | 8.7 | m / 28.7´ | 0.64 | m / 2.08´ |
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7.62 | m / 300˝ | 8.7 m / 28.6´ | 10.5 | m / 34.4´ | 0.76 | m / 2.50´ | |||||
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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 0.0292 | – | 0.036 |
maximum | L (m) = (diagonal screen size in inches) x 0.0351 | – | 0.044 |
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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| - |
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0°
As of October 2008 |
| < 5 > |