NEC VT480 - Diagrams and Distance Charts; Distance Chart for 4:3 Screens

NEC Solutions (America), Inc.
Visual Systems Division
VT480/58/580 Installation Guide
Ceiling Mounted and Desktop Rev 1.1eu
www.visualsystems.com VT480/58/580 Page 2 of 6
Diagrams and Distance Charts
The following shows the proper relative positions of the projector and screen. Refer to the table to determine the position of
installation.
Distances are in inches. For millimeters multiply by 25.4.
Ceiling Mounted
Desktop
Distance Chart for popular 4:3 screens
Note: For screen sizes not indicated on the projection
tables, use the formulas on page 1.
B
C
Lens Ctr
Screen Ctr
Throw Distance
Screen Top
5.26"
5.68"
Lens Offset From
Mount Pipe
3.27"
D
B
C
Lens Ctr
Screen Ctr
Throw Distance
Screen Bottom
2.57"
D
Screen Size (4:3)
Diag W H
inches inches inches inches inches
30 24 18 6 -3
60 48 36 13 -5
72 57.6 43.2 15 -6
84 67.2 50.4 18 -7
90 72 54 19 -8
100 80 60 21 -9
120 96 72 26 -10
150 120 90 32 -13
180 144 108 38 -16
200 160 120 43 -17
250 200 150 53 -22
300 240 180 64 -26356 - 431 9.9 - 8.3
236 - 286 10.0 - 8.3
296 - 359 9.9 - 8.3
176 - 214 10.0 - 8.3
212 - 257 10.0 - 8.3
117 - 142 10.0 - 8.3
141 - 171 10.0 - 8.3
98 - 119 10.0 - 8.4
105 - 128 10.0 - 8.4
69 - 84 10.1 - 8.4
83 - 102 10.0 - 8.4
inches degrees
35 - 43 10.2 - 8.5
B
C
wide - tele
D
α
wide - tele