Runco NLMP22109, Installation & Operation Manual, Page: 33 / 88

Runco VX-22i Installation/Operation Manual 19
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Table 3-4 lists the lens shift limits for each available VX-22i lens, as percentages and
absolute measurements with a 100 x 56 inch (1.78:1) screen.
Folded Optics In rear screen applications where space behind the projector is limited, a mirror may be
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.
Figure 3-5. Folded Optic s
Table 3-4. VX-22i Vertical and Horizontal Len s S hift Limit s
Len s Option
Triton A1 Triton A2 Triton B Triton C Triton D Triton E
Len s S hift Limit s , a s Percentage s of S creen Height or Width (Note s 1 and 2)
Vertical
(Note 2)
Up 10% 31% 30% 32% 28% 30%
Down 10% 71% 61% 62% 65% 63%
Horizontal
(Note 2)
Left 5% 17% 12%
Right 5% 17% 12%
Len s S hift Limit s in Inche s , with a 100-by-56 inch (1.78:1) S creen
Vertical Up 5.60 17.36 16.80 17.92 15.68 16.80
Down 5.60 39.76 34.16 34.72 36.40 35.28
Horizontal Left 5.00 17.00 12.00
Right 5.00 17.00 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.