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16 Vidikron Vision Model 65/Model 75 Installation/Operation Manual
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 3-1. 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 gives the throw ratios for the Vision 65/75, Vision 65/75/CineWide and
Vision 65/75/CineWide with AutoScope.
➤
Table 3-3. Throw Ratios for the Vision 65/75 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 Minimum Maximum
Vision 65 or
Vision
75
1.88 – 2.19 136.49 158.99 (n/a)
Vision 65/CineWide
Vision 75/CineWide
(Whitney Lens)
(n/a) 1.88 – 2.19 180.48 210.24
Vision 65/CineWide
Vision 75/CineWide
(Rainier
II Lens)
(n/a) 1.53 – 1.68 146.88 161.28
Vision 65/CineWide
with AutoScope or
Vision
75/CineWide
with AutoScope
(Rainier
II Lens)
1.88 – 2.19 136.49 158.99 1.53 – 1.68 146.88 161.28
Estimating Throw Distance
Throw Distance (TD) = Screen Width (w) x Lens Throw Ratio
Screen width (w)
TD