Visual Systems
LT157/158 Installation Data
Desktop and Ceiling Mount ver 1.5
Page 2
Projection Distance and Screen Size for Ceiling Mount
The following shows the proper relative position of the projector and screen. Refer to the table for installation data.
Distances are in inches. For millimeters multiply by 25.4.
Ceiling Mount Installation
D
B
α
Screen Ctr
Screen Top
Lens Ctr
5.5"
Lens Offset from
Mount Pipe
Throw Distance
C
1.57"
4.75"
Distance Chart
BD
Diagonal Width(H) Height (V)
inches inches inches inches inches
25 20 15 6.0 NA - 45.9 1.5 NA - 7.4
40 32 24 9.5 62.1 - 75.0 2.5 8.7 - 7.3
60 48 36 14.3 94.4 - 113.8 3.7 8.6 - 7.2
67 53.6 40.2 16.0 105.7 - 127.4 4.1 8.6 - 7.2
72 57.6 43.2 17.2 113.8 - 137.1 4.4 8.6 - 7.1
84 67.2 50.4 20.1 133.2 - 160.4 5.1 8.6 - 7.1
90 72 54 21.5 142.9 - 172.0 5.5 8.5 - 7.1
100 80 60 23.9 159.1 - 191.4 6.1 8.5 - 7.1
120 96 72 28.6 191.4 - 230.3 7.4 8.5 - 7.1
150 120 90 35.8 240.0 - 288.5 9.2 8.5 - 7.1
180 144 108 43.0 288.5 - 346.7 11.0 8.5 - 7.1
210 168 126 50.1 337.0 - 404.9 12.9 8.5 - 7.1
240 192 144 57.3 385.5 - 463.1 14.7 8.5 - 7.1
270 216 162 64.5 434.0 - NA 16.5 8.4 - NA
300 240 180 71.6 482.5 - NA 18.4 8.4 - NA
inches
α
degrees
Screen Size (4:3)
wide - tele
C
wide - tele
Note: For screen sizes not indicated on the projection tables, use the formulas on page 1.
To Next Page
Loading...
