NEC Display Solutions of America, Inc.
VT491/590/595 Installation Guide
Ceiling Mounted and Desktop
Rev 1.3
www.necdisplay.com
VT491/590/595
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
B
C
Lens Ctr
Screen Ctr
Throw Distance
Screen Top
5.26"
5.68"
Lens Offset From
Mount Pipe
3.27"
D
Desktop
B
C
Lens Ctr
Screen Ctr
Throw Distance
Screen Bottom
2.57"
D
Distance Chart for popular 4:3 screens
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
-26
B
C
wide - tele
D
α
wide - tele
inches
degrees
35 - 43
10.2 - 8.5
72 - 87
10.1 - 8.4
87 - 104
10.0 - 8.4
101 - 122
10.0 - 8.4
109 - 130
10.0 - 8.4
121 - 145
10.0 - 8.3
145 - 174
10.0 - 8.3
182 - 218
10.0 - 8.3
218 - 262
10.0 - 8.3
365 - 438
9.9 - 8.3
243 - 291
10.0 - 8.3
304 - 364
9.9 - 8.3
Note:
For screen sizes not indicated on the projection
tables, use the formulas on page 1.
