Runco VX-33I operation manual Folded Optics

Table 3-4lists the lens shift limits for each available VX-33i lens, as percentages and absolute measurements with a 100 x 56 inch (1.78:1) screen.

Table 3-4. VX-33i Vertical and Horizontal Lens Shift Limits

			Lens Option
		Apollo B	Apollo C	Apollo D
Lens Shift Limits, as Percentages of Screen Height or Width (Notes 1 and 2)
Vertical	Up	30%	32%	28%
(Note 2)
	Down	61%	62%	65%
Horizontal	Left		12%
(Note 2)
	Right		12%
Lens Shift Limits in Inches, with a 100-by-56 inch (1.78:1) Screen
Vertical	Up	16.80	17.92	15.68
	Down	34.16	34.72	36.40
Horizontal	Left		12.00
	Right		12.00
Notes:
1. With no vertical or horizontal lens shift, the lens center and screen center are aligned with each
other.
2. Vertical shift limits are percentages of the screen height. Horizontal shift limits are percentages of
the screen width.
3. Vertical lens shift figures apply to ceiling mount configurations. For floor installations
(where the projector is upright), reverse the up/down vertical offset percentages.

In rear screen applications where space behind the projector is limited, a mirror may be		Folded Optics
used to fold the optical path, as shown in Figure 3-5.The position of the projector and
mirror must be accurately set. If you are considering this type of installation, contact your
dealer for assistance.
Screen	Mirror

Figure 3-5. Folded Optics

Runco VX-33i Installation/Operation Manual 19