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Visual Systems Division
Technical Bulletin
LT150 Throw Distance Data
Desktop and Ceiling Mount
Projection Distance and Screen Size for Ceiling Mount Installation
The following diagram shows the relationship between projector position and the screen.
Distances are in inches. For millimeters multiply by 25.4.
Ceiling Mount Installation
Lens Ctr
D
B
Screen Ctr
Distance Chart
Screen Size
Diagonal
Width (H)
40"
60"
67"
72"
84"
90"
100"
120"
150"
180"
Note:
For screen sizes of 36 to 200 inches not indicated on the projection tables, use the formulas on page 1.
Throw Distance
Screen Top
Height (E)
32"
24"
48"
36"
53.6"
40.2"
57.6"
43.2"
67.2"
50.4"
72"
54"
80"
60"
96"
72"
120"
90"
144"
108"
C
B
C
16.1"
52.8"
24.2"
78.7"
27.0"
86.8"
29.0"
93.3"
33.8"
108.9"
36.3"
116.8"
40.3"
130.7"
48.3"
157.1"
60.5"
196.1"
72.6"
235.0"
Rev. 1.6
Lens Offset from
Ctr of Projector
2.96
D
4.1"
17.0°
6.2"
17.1°
6.9"
17.1°
7.4"
17.1°
8.6"
17.1°
9.3"
17.1°
10.3"
17.1°
12.4"
17.1°
15.5"
17.1°
18.5"
17.2°
Page 3
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