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NEC Display Solutions of America, Inc.
NP3151W Installation Guide
Desktop and Ceiling Mount v 1.0
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 - 3.07:11.5 - 2.0:1 1.18 - 1.54:1
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NP05ZL
4.62 - 7.02:1
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