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NEC Display Solutions of America, Inc.
NP905 Installation Guide
Ceiling Mounted and Desktop Rev 1.1
www.necdisplay.com NP905 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 Bottom
2.85"
C
Throw Distance
Screen Top
5.63"
6.01"
Lens Offset From
Mount Pipe
D
3.74
B
Lens Ctr
Screen Ctr
D
Desktop
Distance Chart for popular 4:3 screens
Note:
For screen sizes not indicated on the projection
Diagonal Width(W) Height (H)
inches inches inches inches
30 24 18 6 34 - 41 10.2 - 8.5
60 48 36 12 69 - 83 10.1 - 8.4
67 53.6 40.2 14 78 - 93 10.1 - 8.4
72 57.6 43.2 15 83 - 101 10.0 - 8.4
84 67.2 50.4 17 98 - 118 10.0 - 8.4
90 72 54 19 105 - 126 10.0 - 8.4
100 80 60 21 117 - 140 10.0 - 8.4
120 96 72 25 140 - 169 10.0 - 8.3
150 120 90 31 176 - 211 10.0 - 8.3
180 144 108 37 211 - 254 10.0 - 8.3
210 168 126 43 247 - 297 10.0 - 8.3
240 192 144 50 282 - 339 9.9 - 8.3
270 216 162 56 318 - 382 9.9 - 8.3
300 240 180 62 353 - 425 9.9 - 8.3
-20
-23
-25
-28
-9
-11
-14
-17
-6
-7
-8
-8
i
nc
h
es
D
α
wide - tele
d
egrees
Screen Size (4:3)
-6
i
nc
h
es
-3
B
C
wide - tele
tables, use the formulas on page 1.