Ambient Light; Throw Distance; Estimating Throw Distance - Runco CINEWIDETM VX-3000D Installation & Operation Manual

Installation

Ambient Light

Throw Distance

➤
In general, minimize or eliminate light sources directed at the screen. Contrast ratio in your
images will be noticeably reduced if light directly strikes the screen, such as when a shaft
of light from a window or floodlight falls on the image. Images may then appear washed
out and less vibrant.
➤
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-3000d Series.
Table 3-3. Throw Ratios for the VX-3000d Series
Projector Model
Standard
VX-3000d
VX-3000d/
CineWide (Whitney
Lens)
VX-3000d/
CineWide
(Rainier II Lens)
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
(n/a)
(n/a)
18
T D
Throw Ratio
with
Primary 96x40.8-inch (2.35:1)
Lens and
Anamorphic
Minimum Maximum
Lens
159.72
1.87 – 2.20
1.55 – 1.65
VX-3000d Series Installation/Operation Manual
Throw Range in
inches, with
Screen
(n/a)
179.52 211.20
148.80 158.40