
NEC Display Solutions of America, Inc.
PX803UL Installation Guide
Desktop and Ceiling Mount Rev 1.2
www.necdisplay.com PX803UL Page 2 of 11
Formulas: 16:10 Aspect Ratio (WUXGA)
The Projection Formulas use the image width for calculation. Image width is the same for all aspect ratios, only vertical image size
varies. 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 for “W” in the Projection Formulas.
Refer to the diagrams and charts for popular screen sizes on page 2 and 3:
Projection Formulas: Definitions: 16:10 Screen Formulas
NP39ML: C=0.351W-2.362 W = Image Width W = H x 16/10
NP16FL: C = 0.794W –1.85 H = Image Height (size) H = W x 10/16
NP17ZL: C(Wide) = 1.281W –2.094 ------ C(Tele) = 1.825W –1.913 C = Throw distance Screen Diagonal = W x 18.868/16
NP18ZL: C(Wide) = 1.764W –2.677 ------ C(Tele) = 2.313W –2.638
NP19ZL: C(Wide) = 2.261W –3.150 ------ C(Tele) = 3.747W –3.114 16:9 Screen Formulas
NP20ZL: C(Wide) = 3.654W –5.319 ------ C(Tele) = 5.492W –5.299 W = H x 16/9
NP21ZL: C(Wide) = 5.469W –11.626 ---- C(Tele) = 8.527W –11.531 H = W x 9/16
NP31ZL: C(Wide) = 0.775W –1.839 ------ C(Tele) = 0.970W –1.740 Screen Diagonal = W x 18.358/16
Distance Chart for popular 16:10 Screens (WUXGA)
Distance Chart using 16:9 native projector with 16:9 Image (1080p)
UST Lens Rear Lens
NP39ML NP16FL
Diagonal
inches inches inches inches inches
40 34 21 NA 24.83 24.2 - 30.9 40.9 - 59.4 56.6 - 75.1 72.8 - 122.8 117.5 - 179.2 172.1 - 275.0
60 51 32 NA 38.80 37.8 - 47.9 63.5 - 91.5 87.6 - 115.8 112.6 - 188.7 181.8 - 275.9 268.4 - 425.1
68 58 36 NA 43.88 42.8 - 54.1 71.7 - 103.2 98.9 - 130.6 127.1 - 212.7 205.2 - 311.0 303.4 - 479.6
72 61 38 NA 46.43 45.3 - 57.2 75.8 - 109.0 104.6 - 138.0 134.3 - 224.7 216.8 - 328.6 320.9 - 506.9
85 72 45 NA 55.32 54.0 - 68.1 90.1 - 129.5 124.3 - 163.9 159.6 - 266.7 257.8 - 390.1 382.1 - 602.4
108 92 57.5 29.93 71.20 69.5 - 87.5 115.8 - 166.0 159.6 - 210.2 204.9 - 341.6 330.8 - 500.0 491.5 - 773.0
113 96 60 31.33 74.37 72.6 - 91.4 120.9 - 173.3 166.7 - 219.4 213.9 - 356.6 345.5 - 521.9 513.4 - 807.1
130 110 69 36.39 85.81 83.7 - 105.3 139.3 - 199.6 192.1 - 252.7 246.5 - 410.6 398.1 - 601.0 592.2 - 929.8
137 116 72.5 38.35 90.25 88.1 - 110.8 146.5 - 209.8 201.9 - 265.7 259.1 - 431.5 418.5 - 631.8 622.8 - 977.6
164 139 87 46.50 108.67 106.0 - 133.3 176.2 - 252.1 242.9 - 319.3 311.6 - 518.5 503.3 - 759.2 749.7 - 1175.4
189 160 100 53.80 125.19 122.2 - 153.5 202.9 - 290.1 279.6 - 367.4 358.6 - 596.4 579.3 - 873.4 863.4 - 1352.8
208 176 110 59.41 137.89 134.6 - 169.0 223.4 - 319.3 307.8 - 404.5 394.8 - 656.4 637.8 - 961.3 950.9 - 1489.2
226 192 120 65.03 150.60 147.0 - 184.5 243.9 - 348.5 336.0 - 441.5 431.0 - 716.3 696.2 - 1049.2 1038.4 - 1625.7
270 229 143 77.95 179.82 175.5 - 220.2 291.0 - 415.6 400.9 - 526.6 514.2 - 854.2 830.7 - 1251.3 1239.7 - 1939.4
300 254 159 86.79 NA 195.0 - 244.6 376.0 - 752.4 747.3 - 1198.4 1181.3 - 1826.5 1377.5 - 2154.3 1377.5 - 2154.3
500 424 265 NA NA 326.8 - 409.5 628.9 - 1257.3 1250.6 2003.6 1977.1 - 3054.1 2307.2 - 3603.9 2307.2 - 3603.9
UST Lens Rear Lens
NP39ML NP16FL
Diagonal
inches inches inches Inches inches
39 34 19 NA 25.15 24.5 - 31.2 41.5 - 60.1 57.3 - 76.0 73.7 - 124.3 118.9 - 181.4 174.3 - 278.4
59 51 29 NA 38.64 37.7 - 47.7 63.2 - 91.2 87.3 - 115.3 112.2 - 188.0 181.0 - 274.8 267.3 - 423.3
67 58 33 NA 44.20 43.1 - 54.5 72.2 - 103.9 99.6 - 131.5 128.0 - 214.2 206.6 - 313.2 305.6 - 483.0
70 61 34 NA 46.58 45.4 - 57.4 76.0 - 109.4 104.9 - 138.5 134.8 - 225.5 217.6 - 329.7 322.0 - 508.6
83 72 41 NA 55.32 54.0 - 68.1 90.1 - 129.5 124.3 - 163.9 159.6 - 266.7 257.8 - 390.1 382.1 - 602.4
106 92 52 30 71.20 69.5 - 87.5 115.8 - 166.0 159.6 - 210.2 204.9 - 341.6 330.8 - 500.0 491.5 - 773.0
110 96 54 31 74.37 72.6 - 91.4 120.9 - 173.3 166.7 - 219.4 213.9 - 356.6 345.5 - 521.9 513.4 - 807.1
126 110 62 36 85.49 83.4 - 105.0 138.8 - 198.8 191.4 - 251.8 245.6 - 409.1 396.6 - 598.8 590.0 - 926.4
133 116 65 38 90.25 88.1 - 110.8 146.5 - 209.8 201.9 - 265.7 259.1 - 431.5 418.5 - 631.8 622.8 - 977.6
159 139 78 46 108.52 105.9 - 133.1 176.0 - 251.8 242.5 - 318.9 311.1 - 517.7 502.6 - 758.1 748.6 - 1173.7
184 160 90 54 125.19 122.2 - 153.5 202.9 - 290.1 279.6 - 367.4 358.6 - 596.4 579.3 - 873.4 863.4 - 1352.8
202 176 99 59 137.89 134.6 - 169.0 223.4 - 319.3 307.8 - 404.5 394.8 - 656.4 637.8 - 961.3 950.9 - 1489.2
220 192 108 65 150.60 147.0 - 184.5 243.9 - 348.5 336.0 - 441.5 431.0 - 716.3 696.2 - 1049.2 1038.4 - 1625.7
263 229 129 78 179.98 175.6 - 220.4 291.3 - 416.0 401.3 - 527.0 514.6 - 854.9 831.4 - 1252.4 1240.8 - 1941.2
400 339 212 NA NA 260.9 - 327.1 502.5 - 1004.9 998.9 - 1601.0 1579.2 - 2440.3 1628.9 - 2879.1 1842.4 - 2879.1
500 424 265 NA NA 326.8 - 409.5 628.9 - 1257.3 1250.6 2003.6 1977.1 - 3054.1 2039.2 - 3603.9 2307.2 - 3603.9