Runco operation manual Throw Ratios for the LS-3/LS-5 Series, Vertical and Horizontal, Position

Installation

Table 3-3lists the available LS-3/LS-5 Series lens options and their associated throw ratios.

Table 3-3. Throw Ratios for the LS-3/LS-5 Series

			Throw Range in		Throw Ratio	Throw Range in
		Throw	inches, with		with	inches, with
	Projector Model	Ratio with	72.6x40.8-inch		Primary	96x40.8-inch (2.35:1)
		Primary	(1.78:1) Screen		Lens and	Screen
		Lens Only			Anamorphic
			Minimum	Maximum		Minimum	Maximum
					Lens
	Standard	1.85 – 2.40	134.31	174.24		(n/a)
	LS-3/LS-5
	Standard
	LS-3/LS-5 with	1.56 – 1.86	113.26	135.03		(n/a)
	Optik A Primary
	Lens
	LS-3/LS-5/
	CineWide (Whitney		(n/a)		1.85 – 2.40	177.60	230.40
	Anamorphic Lens)
Vertical and Horizontal ➤	Proper placement of the projector relative to the screen will yield a rectangular,
Position	perfectly-centered image that completely fills the screen.

Ideally, the projector should be positioned perpendicular to the screen and in such a way that the lens center is aligned with either the top or bottom edge of the screen area, and centered horizontally. See Figure 3-3.

Ceiling Installation

Ceiling

Height Projection Distance

x

Lens Center

Lens Center

Screen

Floor Installation

Height

Lens Center

x

Screen

Lens Center

Projection Distance

Floor

Figure 3-3. Projector Placement

18 Runco LS-3/LS-5 Installation/Operation Manual