Ceiling Mounted Installation
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
Screen Top
Lens Ctr
Lens Offset from
Mount Pipe
2.8"
Throw Distance
C
*6.5" w/pipe connector
*5.6" w/ceiling plate
*See page 6 for mount details
4.9"
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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