Throw Distance; Estimating Throw Distance - video xtreme VX-3000 Installation & Operation Manual

Installation

Throw Distance

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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.
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.

Estimating Throw Distance

Throw Distance (TD) = Screen Width (w) x Lens Throw Ratio
Figure 3-1. Estimating Throw Distance
Table 3-3 gives the throw ratios for the VX-3000.
Table 3-3. Throw Ratios for the VX-3000
Projector Model
Standard VX-3000
VX-3000i/CineWide
or
VX-3000d/CineWide
(Whitney Lens)
VX-3000i/CineWide
or
VX-3000d/CineWide
(Rainier II Lens)
VX-3000i/CineWide
with AutoScope or
VX-3000d/CineWide
with AutoScope
(Rainier II Lens)
T D
Throw Range in
Throw inches, with
Ratio with 72.6x40.8-inch
Primary (1.78:1) Screen
Lens Only
Minimum Maximum
1.87 – 2.20 135.76 159.72
(n/a)
(n/a)
1.87 – 2.20 135.76 159.72
16
Throw Ratio Throw Range in
with inches, with
Primary 96x40.8-inch (2.35:1)
Lens and Screen
Anamorphic
Minimum Maximum
Lens
(n/a)
1.87 – 2.20 179.52
1.55 – 1.65 148.80
1.55 – 1.65 148.80
VX-3000 Installation/Operation Manual
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