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For a screen size different from the above, use the equation below to calculate the projection distance.
NOTE:
Distances calculated with the above equations will include a slight error.
Projection distance for 16:9 aspect ratio screen
NOTE:
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•
• At the shortest projection distance, the zoom lens characteristics may cause slight image distortion.
Projection distance for 4:3 aspect ratio screen
NOTE:
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• At the shortest projection distance, the zoom lens characteristics may cause slight image distortion.
Aspect ratio 16:10
L (m) = (diagonal screen size in inches) × 0.0104 – 0.0339
Aspect ratio 16:9
L (m) = (diagonal screen size in inches) × 0.0106 – 0.0339
Aspect ratio 4:3
L (m) = (diagonal screen size in inches) × 0.0117 – 0.0339
unit: meters (feet)
Projection size
[diagonal]
Height from the edge of screen
to center of lens [H]
unit: meters (feet)
1.27 m
1.52 m
1.78 m
2.03 m
2.29 m
2.54 m
0.50
0.60
0.71
0.82
0.92
1.03
0.15
0.17
0.20
0.23
0.26
0.29
50˝
60˝
70˝
80˝
90˝
100˝
/
/
/
/
/
/
(1.63)
(1.98)
(2.33)
(2.69)
(3.03)
(3.38)
(0.48)
(0.57)
(0.67)
(0.76)
(0.86)
(0.95)
1.27 m
1.52 m
1.78 m
2.03 m
2.29 m
2.54 m
0.55
0.67
0.79
0.91
1.02
1.14
0.11
0.13
0.15
0.17
0.19
0.22
50˝
60˝
70˝
80˝
90˝
100˝
/
/
/
/
/
/
(1.82)
(2.20)
(2.59)
(2.97)
(3.36)
(3.74)
(0.35)
(0.42)
(0.49)
(0.57)
(0.64)
(0.71)
Projection size
[diagonal]
Projection distance [L]
Projection distance [L]
Height from the edge of screen
to center of lens [H]
PT-
TW340
LCD Projectors
As of December 2015
6 / 8
SFL14M010-1