Desktop Setup
The following diagram shows the relationship between projector position and the screen. Refer to the chart below for data.
Distances are in inches. For millimeters multiply by 25.4.
D
B
α
Screen Ctr
Scrn Bottom
Lens Ctr
Throw Distance
C
2.3"
Projector Feet
Distance Chart
(for popular screen sizes)
B
D
Diagonal
Width(H)
Height(V)
wide - tele
wide - tele
inches
inches
inches
inches
inches
21
16.8
12.6
5.1
NA - 28.9
1.2
NA - 10.0
40
32
24
9.7
47.2 - 56.6
2.3
11.6 - 9.7
60
48
36
14.5
71.4 - 85.7
3.5
11.5 - 9.6
67
53.6
40.2
16.2
79.9 - 95.9
3.9
11.5 - 9.6
72
57.6
43.2
17.4
86.0 - 103.2
4.2
11.4 - 9.6
84
67.2
50.4
20.3
100.6 - 120.7
4.9
11.4 - 9.6
90
72
54
21.8
107.8 - 129.4
5.2
11.4 - 9.5
100
80
60
24.2
120.0 - 143.9
5.8
11.4 - 9.5
120
96
72
29.0
144.2 - 173.1
7.0
11.4 - 9.5
150
120
90
36.3
180.6 - 216.7
8.7
11.4 - 9.5
180
144
108
43.5
217.0 - 260.4
10.5
11.3 - 9.5
210
168
126
50.8
253.4 - 304.1
12.2
11.3 - 9.5
240
192
144
58.0
289.8 - 347.8
14.0
11.3 - 9.5
270
216
162
65.3
326.2 - 391.4
15.7
11.3 - 9.5
300
240
180
72.6
362.6 - 435.1
17.4
11.3 - 9.5
Screen Size (4:3)
C
inches
α
degrees
Note:
For screen sizes not indicated on the chart, use the formulas on page 1.
www.necvisualsystems.com
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