Vidikron 30ET ユーザーズマニュアル
18
Vidikron Vision 30 Series Owner’s Operating Manual
PRE
L
IMINAR
Y
Throw Distance
Throw distance is the distance measured from the front of the projector to the screen. This is
an important calculation in any projector installation as it determines whether or not you
have enough room to install your projector with a desired screen size and if your image will
be the right size for your screen.
an important calculation in any projector installation as it determines whether or not you
have enough room to install your projector with a desired screen size and if your image will
be the right size for your screen.
You can quickly estimate the throw distance by taking the width of the screen and
multiplying it by the lens throw ratio; see Figure 3-1. The result of this calculation tells you
roughly how far back the projector should be positioned from the screen in order to project a
focused image large enough to fill the screen.
multiplying it by the lens throw ratio; see Figure 3-1. The result of this calculation tells you
roughly how far back the projector should be positioned from the screen in order to project a
focused image large enough to fill the screen.
Figure 3-1. Estimating Throw Distance
Table 3-3 lists the available lens options for the Vision 30 and their associated throw ratios.
➤
Table 3-3. Throw Ratios for the Vision 30 Series
Projector Model
Throw Ratio
with Primary
Lens Only
Throw Range in
inches, with
72.6x40.8-inch
(1.78:1) Screen
(1.78:1) Screen
Throw Ratio
with Primary
Lens and
Anamorphic
Lens
Throw Range in
inches, with
96x40.8-inch (2.35:1)
Screen
Minimum Maximum
Minimum Maximum
Vision 30
1.38 - 1.80
100.19
130.68
(n/a)
Vision 30/CineWide
(n/a)
1.58 - 1.80
151.68
172.80
Vision 30ET
1.88 - 2.45
136.49
177.87
(n/a)
Vision 30ET/
CineWide
(n/a)
1.88 - 2.45
180.48
235.20
Estimating Throw Distance
Throw Distance (TD) = Screen Width (w) x Lens Throw Ratio
Throw Distance (TD) = Screen Width (w) x Lens Throw Ratio
Scr
een w
idth (w)
TD