User manual
Installation
18 Runco LS-1 Installation/Operation Manual
PRE
L
IMINAR
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Table 3-3 lists the available LS-1 lens options and their associated throw ratios. 
Vertical and Horizontal 
Position
Proper placement of the projector relative to the screen will yield a rectangular, 
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.
Table 3-3. LS-1 Lens Options and Throw Ratios (Note)
Projector Model
Throw 
Ratio with 
Primary 
Lens Only
Throw Range in 
inches, with 
72.6x40.8-inch 
(1.78:1) Screen
Throw Ratio 
with 
Primary 
Lens and 
Anamorphic 
Lens
Throw Range in 
inches, with 
96x40.8-inch (2.35:1) 
Screen
Minimum Maximum Minimum Maximum
LS-1 + Standard 
Lens
1.85 – 2.40 134.31 174.24 (n/a)
LS-1 + 
Standard
 Lens + 
Fixed Anamorphic 
Lens
(n/a) 1.85 – 2.40 177.60 230.40
LS-1 + 
Standard
 Lens + 
Movable 
Anamorphic Lens
1.85 - 2.40 134.31 174.24 1.39 – 1.80 133.44 172.80
LS-1 + Optik A 
Primary Lens
1.63 - 1.86 118.34 135.04 (n/a)
LS-1 + Optik A 
Primary Lens + 
Fixed Anamorphic 
Lens
(n/a) 1.63 - 1.86 156.48 178.56
LS-1 + Optik A 
Primary Lens + 
Movable 
Anamorphic Lens
1.63 - 1.86 118.34 135.04 1.22 - 1.40 117.12 134.40
Note: Due to normal manufacturing variances, throw distance can vary by up to +/- 5 percent from 
these specifications.
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