Distance Chart - NEC MultiSync VT540JK User Manual

Distance Chart

C
α
E
D
Formulas(mm)
"H = Horizontal Screen Width
A = C/cosα
C (wide) = 36.8712 × (diagonal screen size/ 0.92205) – 43.5689
C (tele) = C(wide) × 1.2
D = 1.45 × M – 62.9
E = 62.9 + 5.5M
M = 1.25H / 22.86
Zoom Lens (Wide)
α
degree 9.01
β (=sinα)
0.16
γ (=cosα)
0.99
Screen Size H-Width inch 24
4:3 Diagonal inch 30
A mm 1171
inch 46
C mm 1156
inch 46
D mm -15
inch -1
E mm 246
inch 10
Zoom Lens (Tele)
α
degree 6.28
β (=sinα)
0.11
γ (=cosα)
0.99
Screen Size H-Width inch 20
4:3 Diagonal inch 25
A mm 1396
inch 55
C mm 1387
inch 55
D mm -23
inch -1
E mm 216
inch 8
Distance Chart
300
250
200
150
100
50
0
0 2 4 6
Throwing Distance (m)
A
8.93 8.85 8.82 8.81
0.16 0.15 0.15 0.15
0.99 0.99 0.99 0.99
32 48 56 64
40 60 70 80
1575 2384 2789 3193
62 94 110 126
1556 2356 2756 3155
61 93 108 124
2 34 50 66
0 1 2 3
307 430 491 552
12 17 19 22
7.46 7.39 7.37 7.36
0.13 0.13 0.13 0.13
0.99 0.99 0.99 0.99
32 48 56 64
40 60 70 80
1883 2851 3334 3818
74 112 131 150
1867 2827 3307 3787
74 111 130 149
2 34 50 66
0 1 2 3
307 430 491 552
12 17 19 22
300
250
200
150
100
50
0
0 100
8 10 12
Throwing Distance (inch)
wide tele
A: Distance between the
lens and the screen cen-
ter
C: Horizontal throw dis-
tance between screen
surface and the lens
D: Vertical distance be-
tween projector base
and base of image
E: Vertical distance be-
tween projector base
and screen center
Formulas(inch)
"H = Horizontal Screen Width
A = C/cosα
C (wide) = (36.8712 × (diagonal screen size/0.92205) – 43.5689) / 25.4
C (tele) = C (wide) × 1.2
D = 1.45 × M – 62.9 / 25.4
E = (62.9 + 5.5M) / 25.4
M = 1.25H / 0.9
8.79 8.78 8.77 8.75
0.15 0.15 0.15 0.15
0.99 0.99 0.99 0.99
72 80 96 120
90 100 120 150
3598 4002 4811 6025
142 158 189 237
3555 3955 4755 5955
140 156 187 234
82 98 130 179
3 4 5 7
613 674 796 980
24 27 31 39
7.35 7.34 7.32 7.31
0.13 0.13 0.13 0.13
0.99 0.99 0.99 0.99
72 80 96 120
90 100 120 150
4302 4785 5753 7204
169 188 226 284
4266 4746 5706 7146
168 187 225 281
82 98 130 179
3 4 5 7
613 674 796 980
24 27 31 39
NOTE: Distances may vary +/–5%.
200 300 400
E–15
Screen (inch)
H
4:3 Diagonal
8.74 8.74 8.73 8.72
0.15 0.15 0.15 0.15
0.99 0.99 0.99 0.99
144 160 192 216
180 200 240 270
7238 8047 9666 10879
285 317 381 428
7154 7954 9554 10753
282 313 376 423
227 259 324 372
9 10 13 15
1163 1285 1530 1713
46 51 60 67
7.30 7.30 7.29 7.29
0.13 0.13 0.13 0.13
0.99 0.99 0.99 0.99
144 160 192 216
180 200 240 270
8655 9623 11558 13009
341 379 455 512
8585 9545 11464 12904
338 376 451 508
227 259 324 372
9 10 13 15
1163 1285 1530 1713
46 51 60 67
Throwing Distance Screen Size (inch)
(inch) (m) Wide Tele
45 1.2 30 25
61 1.6 40 33
93 2.4 60 50
108 2.8 70 58
124 3.2 80 67
140 3.6 90 75
156 4.0 100 83
187 4.8 120 100
234 6.0 150 125
282 7.2 180 150
313 8.0 200 167
376 9.6 240 200
423 10.8 270 225
471 12.0 300 250
8.72
0.15
0.99
240
300
12093
476
11953
471
420
17
1896
75
7.28
0.13
0.99
240
300
14460
569
14344
565
420
17
1896
75