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NEC Display Solutions of America, Inc.
PX700W/PX750U/PX800X Installation Guide
Desktop and Ceiling Mount Rev 1.4
www.necdisplay.com PX700W/PX750U/PX800X Page 3 of 13
Formulas: 16:10 Aspect Ratio (PX700W—WXGA)
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
NP16FL: C = 0.812W – 1.961 W = Image Width W = H x 16/10
NP17ZL: C(Wide) = 1.346W – 2.201 ------ C(Tele) = 1.917W – 2.008 H = Image Height (size) H = W x 10/16
NP18ZL: C(Wide) = 1.852W – 2.811 ------ C(Tele) = 2.428W – 2.772 C = Throw distance Screen Diagonal = W x 18.868/16
NP19ZL: C(Wide) = 2.372W – 3.307 ------ C(Tele) = 3.937W – 3.272 16:9 Screen Formulas
NP20ZL: C(Wide) = 3.840W – 5.587 ------ C(Tele) = 5.771W – 5.567 W = H x 16/9
NP21ZL: C(Wide) = 5.743W – 12.213 ------ C(Tele) = 8.956W – 12.110 H = W x 9/16
NP31ZL: C(Wide) = 0.812W – 2.099 ------ C(Tele) = 1.017W – 1.992 Screen Diagonal = W x 18.358/16
Distance Chart for popular 16:10 Screens (WXGA)
Distance Chart using 16:10 native projector with 16:9 Image (720p)
Rear Lens
NP16FL
Diagonal
Width(W)
Height (H) 0.76:1
inches inches inches inches
40 34 21 25.32 25.2 - 32.2 40.8 - 62.4 59.4 - 78.8 76.4 129.0 123.4 188.3 180.8 288.8
60 51 32 39.61 39.5 - 50.1 63.4 - 96.1 92.0 - 121.5 118.1 - 198.3 191.0 289.9 281.8 446.4
68 58 36 44.81 44.7 - 56.6 71.6 - 108.4 103.9 - 137.1 133.3 - 223.5 215.6 326.8 318.6 503.8
72 61 38 47.41 47.3 - 59.8 75.7 - 114.5 109.8 - 144.9 140.9 - 236.1 227.9 345.3 337.0 532.4
85 72 45 56.50 56.4 - 71.2 90.0 - 136.0 130.5 - 172.0 167.5 - 280.2 270.9 - 409.9 401.3 - 632.7
108 92 57.5 72.74 72.6 - 91.6 115.7 - 174.4 167.6 - 220.6 214.9 - 358.9 347.7 - 525.4 516.1 - 811.8
113 96 60 75.99 75.9 - 95.6 120.8 - 182.0 175.0 - 230.3 224.4 - 374.7 363.1 - 548.4 539.1 - 847.7
130 110 69 87.68 87.5 - 110.3 139.2 - 209.6 201.6 - 265.3 258.6 - 431.4 418.3 - 631.6 621.8 - 976.6
137 116 72.5 92.23 92.1 - 116.0 146.4 - 220.4 212.0 - 278.9 271.8 - 453.4 439.9 - 663.9 654.0 - 1026.8
164 139 87 111.07 110.9 - 139.6 176.1 - 264.8 255.0 - 335.2 326.9 - 544.8 528.9 - 797.8 787.2 - 1234.6
189 160 100 127.96 127.8 - 160.7 202.8 - 304.7 293.5 - 385.7 376.2 - 626.6 608.8 - 917.8 906.7 - 1420.9
208 176 110 140.95 140.8 - 177.0 223.3 - 335.4 323.1 - 424.6 414.2 - 689.6 670.3 - 1010.1 998.6 - 1564.1
226 192 120 153.94 153.8 - 193.3 243.8 - 366.1 352.8 - 463.4 452.1 - 752.6 731.7 - 1102.5 1090.4 - 1707.4
270 229 143 183.82 183.7 - 230.7 290.9 - 436.6 420.9 - 552.8 539.4 - 897.5 873.0 - 1314.8 1301.8 - 2037.0
NP21ZL
5.30-8.30:1
5.30-8.30:1
Zoom Lenses
NP20ZL
3.60-5.40:1
5.30-8.30:1
inches
inches
0.75-0.93:1
1.29-1.79:1
inches
inches
Screen Size (16:10)
2.22-3.67:1
NP31ZL
NP17ZL
NP18ZL
NP19ZL
1.73-2.27-1
Rear Lens
NP16FL
Diagonal
Width(W)
Height (H) 0.76:1
inches inches inches inches
39 34 19 25.65 25.5 - 32.6 43.5 - 60.2 - 79.8 77.3 - 130.6 125.0 - 190.6 183.0 - 290.4
59 51 29 39.45 39.3 - 49.9 66.4 - 73.4 91.6 - 121.1 117.7 - 197.5 190.3 - 288.8 280.7 - 441.6
67 58 33 45.14 45.0 - 57.0 75.8 - 84.3 104.6 - 138.1 134.3 - 225.1 217.1 - 329.2 320.9 - 503.9
70 61 34 47.57 47.4 - 60.0 79.9 - 88.9 110.2 - 145.3 141.4 - 236.9 228.7 - 346.5 338.1 - 530.5
83 72 41 56.50 56.4 - 71.2 94.7 - 106.0 130.5 - 172.0 167.5 - 280.2 270.9 - 409.9 401.3 - 628.4
106 92 52 72.74 72.6 - 91.6 121.6 - 137.2 167.6 - 220.6 214.9 - 358.9 347.7 - 525.4 516.1 - 806.3
110 96 54 75.99 75.9 - 95.6 127.0 - 143.4 175.0 - 230.3 224.4 - 374.7 363.1 - 548.4 539.1 - 841.9
126 110 62 87.36 87.2 - 109.9 145.8 - 165.2 200.9 - 264.3 257.6 - 429.8 416.8 - 629.2 619.5 - 966.5
133 116 65 92.23 92.1 - 116.0 153.9 - 174.5 212.0 - 278.9 271.8 - 453.4 439.9 - 663.9 654.0 - 1019.8
159 139 78 110.91 110.8 - 139.4 184.9 - 210.3 254.6 - 334.7 326.4 - 544.0 528.2 - 796.6 786.1 - 1224.4
184 160 90 127.96 127.8 - 160.7 213.1 - 243.0 293.5 - 385.7 376.2 - 626.6 608.8 - 917.8 906.7 - 1411.3
202 176 99 140.95 140.8 - 177.0 234.7 - 267.9 323.1 - 424.6 414.2 - 689.6 670.3 - 1010.1 998.6 - 1553.6
220 192 108 153.94 153.8 - 193.3 256.2 - 292.8 352.8 - 463.4 452.1 - 752.6 731.7 - 1102.5 1090.4 - 1695.9
263 229 129 183.99 183.8 - 230.9 306.0 - 350.4 421.3 - 553.2 539.9 - 898.3 873.8 - 1316.0 1302.9 - 2025.1
1.29-1.79:1
inches
inches
Screen Size (16:9)
2.22-3.67:1
NP31ZL
NP17ZL
NP18ZL
NP19ZL
1.73-2.27-1
NP21ZL
5.30-8.30:1
inches
Zoom Lenses
NP20ZL
3.60-5.40:1
inches
inches
inches
0.75-0.93:1