Screen Size And Projection Distance - NEC VT800 User Manual

 Screen Size and Projection Distance

Throw Distance and Screen Size
The following shows the proper relative positions of the projector and screen. Refer to the table to determine the
position of installation.
Projector bottom
Dstance Chart
B = Vertical distance between lens center and screen center
C = Throw distance
D = Vertical distance between lens center and screen bottom (top of screen for ceiling application)
α = Throw angle
NOTE: Distances may vary +/-5%.
Screen Size
B
Diagonal Width Height
inch inch inch inch
21 17 13 4
25 20 15 5
30 24 18 6
40 32 24 8
60 48 36 12
72 58 43 15
80 64 48 17
84 67 50 17
90 72 54 19
100 80 60 21
120 96 72 25
150 120 90 31
180 144 108 37
200 160 120 41
210 168 126 43
240 192 144 50
270 216 162 56
300 240 180 62
C a
D
Wide – Tele Wide – Tele
inch inch degree
– – 29 -2 – –
28 – 34 -2 10.3 –
34 – 41 -3 10.2 –
46 – 56 -4 10.1 –
70 – 84 -6 10.1 –
84 – 101 -7 10.0 –
93 – 112 -8 10.0 –
98 – 118 -8 10.0 –
105 – 126 -8 10.0 –
117 – 141 -9 10.0 –
141 – 169 -11 10.0 –
176 – 211 -14 10.0 –
211 – 254 -17 10.0 –
235 – 282 -19 10.0 –
247 – 296 -20 10.0 –
282 – 339 -23 9.9 –
318 – 381 -25 9.9 –
353 – 424 -28 9.9 –
screen center
2.85"/72.3 mm
lens center
C
Screen Size
Diagonal Width Height
mm mm mm
8.6 533 427 320
8.6 635 508 381
8.5 762 610 457
8.4 1016 813 610
8.4 1524 1219 914
8.4 1829 1463 1097
8.4 2032 1626 1219
8.4 2134 1707 1280
8.4 2286 1829 1372
8.3 2540 2032 1524
8.3 3048 2438 1829
8.3 3810 3048 2286
8.3 4572 3658 2743
8.3 5080 4064 3048
8.3 5334 4267 3200
8.3 6096 4877 3658
8.3 6858 5486 4115
8.3 7620 6096 4572
1
B
D
screen bottom
C
B D
Wide – Tele
mm mm mm
110 – – 730 -50
130 720 – 870 -60
160 870 – 1050 -70
210 1170 – 1410 -100
310 1770 – 2130 -140
380 2130 – 2560 -170
420 2370 – 2850 -190
440 2490 – 2990 -200
470 2670 – 3210 -210
520 2970 – 3570 -240
630 3570 – 4290 -290
790 4470 – 5370 -360
940 5370 – 6450 -430
1050 5970 – 7170 -480
1100 6270 – 7530 -500
1260 7170 – 8610 -570
1410 8070 – 9690 -640
1570 8970 – 10770 -710
8. Appendix
a
Wide – Tele
degree
– – 8.6
10.3 – 8.6
10.2 – 8.5
10.1 – 8.4
10.1 – 8.4
10.0 – 8.4
10.0 – 8.4
10.0 – 8.4
10.0 – 8.4
10.0 – 8.3
10.0 – 8.3
10.0 – 8.3
10.0 – 8.3
10.0 – 8.3
10.0 – 8.3
9.9 – 8.3
9.9 – 8.3
9.9 – 8.3