NEC NP3151W WXGA Manual - Np3151W Installation Guide
NEC Display Solutions of America, Inc.
NP3151W Installation Guide
Desktop and Ceiling Mount
v 1.1
www.necdisplay.com
NP3151W Page 2 of 11
Formulas
The Projection Formulas use the image width for calculation. Image height is the same for all aspect ratios, only horizontal image
size varies when using a 16:10 aspect ratio screen. For proper projector placement, determine the image width for a desired screen
size. Use the Screen Formulas below to calculate all screen dimensions. Plug in the image width “W” for a 16:10 aspect ratio image
in the Projection Formulas.
Refer to the diagrams (page 5) and charts below for popular screen sizes 16:10 screens:
Projection Formulas:
Definitions:
NP01FL: C
=
0.8260W
–
1.33
W
=
Image
Width
NP02ZL: C(Wide) = 1.2120W – 1.798 ------ C(Tele) = 1.5770W – 1.795
H = Image Height (size)
Standard:
C(Wide) = 1.5330W – 2.022 ------ C(Tele) = 2.0390W – 2.015
C = Throw distance
NP03ZL: C(Wide) = 1.9910W – 2.830 ------ C(Tele) = 3.1460W – 2.840
NP04ZL: C(Wide) = 3.0300W – 4.830 ------ C(Tele) = 4.8465W – 4.850
16:10 Screen Formulas:
NP05ZL: C(Wide) = 4.7888W – 7.625 ------ C(Tele) = 7.2779W – 7.645
W = H x 16/10
H = W x 10/16
Screen
Diagonal
=
W
x
18.868/16
Note: Tilting the front of the projector or down by more than 45° from level could reduce lamp life by up to 20%.
Distance Chart for popular 16:10 screens
Note:
For screen sizes not indicated on the projection tables, use the formulas on page above.
Rear Lens
NP01FL
Diagonal
Width(W) Height (H)
0.8:1
inches
inches
inches
inches
85
72
45
58
108 - 145
85 - 112
141 - 224
213 - 344
337 - 516
92
78
49
63
118 - 158
93 - 122
153 - 244
233 - 375
368 - 563
98
83
52
67
126 - 168
99 - 129
163 - 259
247 - 398
391 - 598
102
86
54
70
130 - 174
103 - 134
169 - 269
257 - 414
406 - 621
111
94
59
76
142 - 190
112 - 147
184 - 293
280 - 451
443 - 677
113
96
60
78
145 - 194
115 - 150
188 - 299
286 - 460
452 - 691
123
104
65
85
157 - 210
124 - 162
204 - 324
310 - 499
490 - 749
125
106
66
86
160 - 213
126 - 165
207 - 329
315 - 507
498 - 761
147
125
78
NA
189 - 252
149 - 195
246 - 390
373 - 600
590 - 901
149
126
79
NA
192 - 256
151 - 198
249 - 395
378 - 608
598 - 912
213
181
113
NA
275 - 367
217 - 283
357 - 566
543 - 871
858 - 1308
255
216
135
NA
329 - 438
260 - 339
427 - 677
650 - 1042
1027 - 1564
340
288
180
NA
439 - 585
347 - 452
571 - 903
868 - 1391
1372 - 2088
425
360
225
NA
550 - 732
435 - 566
714 - 1130
1086 - 1740
1716 - 2612
Zoom Lenses
Image Size (16:10)
on a (16:10) screen
2.98 - 4.77:1
Standard
NP02ZL
NP03ZL
NP04ZL
1.94 - 3.07:1
1.5 - 2.0:1
1.18 - 1.54:1
inches
inches
NP05ZL
4.62 - 7.02:1
inches
inches
inches