Vidikron 30ET manual Throw Ratios for the Vision 30 Series

Installation

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.

Estimating Throw Distance

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

Screen	width
		(w)

TD

Figure 3-1. Estimating Throw Distance

Table 3-3lists the available lens options for the Vision 30 and their associated throw ratios.

Table 3-3. Throw Ratios for the Vision 30 Series

		Throw Range in		Throw Ratio	Throw Range in
		inches, with			inches, with
	Throw Ratio			with Primary
		72.6x40.8-inch			96x40.8-inch (2.35:1)
Projector Model	with Primary			Lens and
		(1.78:1) Screen			Screen
	Lens Only			Anamorphic
				Lens
		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/		(n/a)		1.88 - 2.45	180.48	235.20
CineWide

18 Vidikron Vision 30 Series Owner’s Operating Manual