r
When the screen aspect ratio is 4:3
(Unit: m)
Throw ratio
Optical zoom
1.31-2.12:1
Digital Zoom Extender
*1
1.31-2.66:1 (converted value)
Distance from the lens
center to the image lower
end (H)
*2
Screen diagonal (SD) Minimum distance (LW) Maximum distance (LT)
Maximum distance (LT)
0.76 (30")
0.78
1.27
1.59
0.025
~
0.228
1.02 (40")
1.05
1.71
2.15
0.034 ~
0.306
1.27 (50")
1.32
2.14
2.68
0.042 ~
0.381
1.52 (60")
1.58
2.57
3.22
0.051
~
0.456
1.78 (70")
1.86
3.01
3.77
0.059
~
0.534
2.03 (80")
2.12
3.44
4.31
0.068
~
0.609
2.29 (90")
2.40
3.88
4.86
0.076
~
0.687
2.54 (100")
2.67
4.31
5.40
0.085
~
0.762
3.05 (120")
3.21
5.18
6.49
0.102
~
0.915
3.81 (150")
4.01
6.48
8.11
0.127
~
1.143
5.08 (200")
5.36
8.65
10.83
0.169
~
1.524
6.35 (250")
6.71
10.83
13.54
0.212
~
1.905
7.62 (300")
8.05
13.00
16.25
0.254
~
2.286
*1 When optical zoom and Digital Zoom Extender are used together and [DIGITAL ZOOM EXTENDER] is set to [80%].
*2
Only for optical zoom
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)
*1
Optical zoom
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
Digital Zoom
Extender
Minimum (LW)
= 0.9371 × SD / X - 0.0294 = 0.9632 × SD / X - 0.0294 = 1.0609 × SD / X - 0.0294
Maximum (LT)
= 1.5103 × SD / X - 0.0319 = 1.5523 × SD / X - 0.0319 = 1.7098 × SD / X - 0.0319
*1 X in the formulas represents the setting value of [DIGITAL ZOOM EXTENDER] (100%=1.00, 95%=0.95, 90%=0.90, 85%=0.85,
80%=0.80).
ENGLISH
-
39
Chapter 2 Getting Started - Setting up