Throw distance, Figure 3-2 . estimating throw distance, Table 3-3 . throw ratios for the vision 85 series – Vidikron Vision Model 85 User Manual

Page 31: 2. estimating throw distance, Pre l iminar y

Vidikron Vision 85 Owner’s Operating Manual

PRE

IMINAR

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.

You can quickly estimate the throw distance by taking the width of the screen and
multiplying it by the lens throw ratio; see Figure 3-2. 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 3-2. Estimating Throw Distance

Table 3-3 gives the throw ratios for the Vision 85, Vision 85/CineWide and Vision 85/CineWide
with AutoScope.

Table 3-3. Throw Ratios for the Vision 85 Series

Projector Model

Throw Ratio

with Primary

Lens Only

Throw Range in

inches, with

72.6x40.8-inch
(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

Vision 85

1.86 – 2.45

135.04

177.87

(n/a)

Vision 85/CineWide

(n/a)

1.92 – 2.45

184.32

235.20

Vision 85/CineWide
with AutoScope

1.86 – 2.45

135.04

177.87

1.41 – 1.82

135.36

174.72

Estimating Throw Distance
Throw Distance (TD) = Screen Width (w) x Lens Throw Ratio

Scr

een width (w)