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Runco LS-1 Installation/Operation Manual

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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

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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