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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
minimum
L (m) = (diagonal screen size in inches) × 0.0322 – 0.0233
maximum
L (m) = (diagonal screen size in inches) × 0.0386 – 0.0237
Aspect ratio 16:9
minimum
L (m) = (diagonal screen size in inches) × 0.0330 – 0.0233
maximum
L (m) = (diagonal screen size in inches) × 0.0397 – 0.0237
Aspect ratio 4:3
minimum
L (m) = (diagonal screen size in inches) × 0.0364 – 0.0233
maximum
L (m) = (diagonal screen size in inches) × 0.0437 – 0.0237
0.76 m
1.02 m
1.27 m
1.52 m
1.78 m
2.03 m
2.29 m
2.54 m
3.05 m
3.81 m
5.08 m
6.35 m
7.62 m
1.0
1.3
1.6
2.0
2.3
2.6
3.0
3.3
3.9
4.9
6.6
8.2
9.9
1.2
1.6
2.0
2.4
2.8
3.1
3.5
3.9
4.7
5.9
7.9
9.9
11.9
0.008
0.011
0.014
0.017
0.019
0.022
0.025
0.028
0.033
0.041
0.054
0.068
0.082
30˝
40˝
50˝
60˝
70˝
80˝
90˝
100˝
120˝
150˝
200˝
250˝
300˝
/
/
/
/
/
/
/
/
/
/
/
/
/
(3.2)
(4.3)
(5.3)
(6.4)
(7.5)
(8.6)
(9.7)
(10.8)
(12.9)
(16.2)
(21.6)
(27.0)
(32.4)
(3.8)
(5.1)
(6.4)
(7.7)
(9.0)
(10.3)
(11.6)
(12.9)
(15.5)
(19.4)
(25.9)
(32.5)
(39.0)
(0.026)
(0.036)
(0.046)
(0.056)
(0.062)
(0.072)
(0.082)
(0.092)
(0.108)
(0.135)
(0.177)
(0.223)
(0.269)
Projection size
[diagonal]
Projection distance [L]
Min [wide]
Max [telephoto]
Height from the edge of screen
to center of lens [H]
unit: meters (feet)
0.76 m
1.02 m
1.27 m
1.52 m
1.78 m
2.03 m
2.29 m
2.54 m
3.05 m
3.81 m
5.08 m
6.35 m
7.62 m
1.1
1.4
1.8
2.2
2.5
2.9
3.3
3.6
4.3
5.4
7.3
9.1
10.9
1.3
1.7
2.2
2.6
3.0
3.5
3.9
4.3
5.2
6.5
8.7
10.9
13.1
0.065
0.087
0.109
0.131
0.152
0.174
0.196
0.218
0.261
0.327
0.435
0.544
0.653
30˝
40˝
50˝
60˝
70˝
80˝
90˝
100˝
120˝
150˝
200˝
250˝
300˝
/
/
/
/
/
/
/
/
/
/
/
/
/
(3.5)
(4.7)
(5.9)
(7.1)
(8.3)
(9.5)
(10.7)
(11.9)
(14.3)
(17.8)
(23.8)
(29.8)
(35.8)
(4.2)
(5.7)
(7.1)
(8.5)
(10.0)
(11.4)
(12.8)
(14.3)
(17.1)
(21.4)
(28.6)
(35.8)
(42.9)
(0.213)
(0.285)
(0.358)
(0.430)
(0.499)
(0.571)
(0.643)
(0.715)
(0.856)
(1.073)
(1.427)
(1.785)
(2.142)
Projection size
[diagonal]
Projection distance [L]
Min [wide]
Max [telephoto]
Height from the edge of screen
to center of lens [H]
unit: meters (feet)
PT-
LW280
LCD Projectors
As of April 2014
6 / 9
SFL14M004
