Vidikron Model 85 manual Position, Ceiling Installation, Floor Installation

Installation

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 and screen center are aligned with each other, as shown in Figure 3-3.

Ceiling Installation

Ceiling

Height

Projection Distance

Lens Center

x

	Screen	Lens Center
Floor Installation
Height	Screen	Lens Center
Lens Center
x
	Projection Distance
		Floor
Figure 3-3. Projector Placement

Vertical Lens Shift ➤ If it is not possible to align the projector and screen as shown in Figure 3-3,you can use the lens shift controls to center the image on the screen. Lens shift is generally expressed as a percentage of the screen height or width, as shown in Figure 3-4.

Screen Center

0%

50% Height

Lens Shift

(0.5 x H)

100% Height

Lens Shift

(1.0 x H)

Note: This is a general example of lens shift. Lenses vary in their shift capabilities. No particular lens or

projector is used in this example.

Figure 3-4. Vertical Lens Shift (EXAMPLE ONLY)

20 Vidikron Vision 85 Owner’s Operating Manual