Projection distance
An error of ± 5% may occur to the projection distance as described.
Also, it is corrected to become smaller than the specified image size when [SCREEN ADJUSTMENT] is used.
(Unit: m)
Projection
size
16:10 aspect ratio
16:9 aspect ratio
4:3 aspect ratio
Screen
diagonal
(SD)
Minimum
distance
(LW)
Maximum
distance
(LT)
Distance from
the lens center
to the image
lower end (H)
Minimum
distance
(LW)
Maximum
distance
(LT)
Distance from
the lens center
to the image
lower end (H)
Minimum
distance
(LW)
Maximum
distance
(LT)
Distance from
the lens center to
the image lower
end (H)
0.76 (30")
0.68
1.12
0.022 ~ 0.201
0.70
1.15
0.002 ~ 0.186
0.78
1.27
0.025 ~ 0.228
1.02 (40")
0.93
1.51
0.030 ~ 0.270
0.95
1.55
0.003 ~ 0.250
1.05
1.71
0.034 ~ 0.306
1.27 (50")
1.16
1.89
0.037 ~ 0.337
1.19
1.94
0.004 ~ 0.311
1.32
2.14
0.042 ~ 0.381
1.52 (60")
1.39
2.26
0.045 ~ 0.403
1.43
2.33
0.005 ~ 0.372
1.58
2.57
0.051 ~ 0.456
1.78 (70")
1.64
2.66
0.052 ~ 0.472
1.69
2.73
0.005 ~ 0.436
1.86
3.01
0.059 ~ 0.534
2.03 (80")
1.87
3.03
0.060 ~ 0.538
1.93
3.12
0.006 ~ 0.497
2.12
3.44
0.068 ~ 0.609
2.29 (90")
2.12
3.43
0.067 ~ 0.607
2.18
3.52
0.007 ~ 0.561
2.40
3.88
0.076 ~ 0.687
2.54 (100")
2.35
3.80
0.075 ~ 0.673
2.42
3.91
0.008 ~ 0.622
2.67
4.31
0.085 ~ 0.762
3.05 (120")
2.83
4.57
0.090 ~ 0.808
2.91
4.70
0.009 ~ 0.747
3.21
5.18
0.102 ~ 0.915
3.81 (150")
3.54
5.72
0.112 ~ 1.010
3.64
5.88
0.012 ~ 0.933
4.01
6.48
0.127 ~ 1.143
5.08 (200")
4.73
7.64
0.150 ~ 1.346
4.86
7.85
0.015 ~ 1.245
5.36
8.65
0.169 ~ 1.524
6.35 (250")
5.92
9.56
0.187 ~ 1.683
6.09
9.83
0.019 ~ 1.556
6.71
10.83
0.212 ~ 1.905
7.62 (300")
7.11
11.48
0.224 ~ 2.019
7.31
11.80
0.023 ~ 1.867
8.05
13.00
0.254 ~ 2.286
Projection distance formulas
To use a projected image size not listed in this manual, check the projected image size SD (m) and use the
respective formula to calculate the value.
The unit of all the formulae is m. (Values obtained by the following calculation formulae contain a slight error.)
When calculating the value using image size designation (value in inches), multiply the value in inches by 0.0254
and substitute it into SD in the formula.
Aspect ratio
16:10
16:9
4:3
Screen height (SH)
= 0.530 × SD
= 0.490 × SD
= 0.6 × SD
Screen width (SW)
= 0.848 × SD
= 0.872 × SD
= 0.8 × SD
Projection
distance (L)
Minimum (LW)
= 0.9371 × SD - 0.0294
= 0.9632 × SD - 0.0294
= 1.0609 × SD - 0.0294
Maximum (LT)
= 1.5103 × SD - 0.0319
= 1.5523 × SD - 0.0319
= 1.7098 × SD - 0.0319
ENGLISH
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35
Chapter 2 Getting Started - Setting up
