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Installation

28 D-73d Series Installation/Operation Manual

Table 3-4 lists the usable lens shift ranges for each available D-73d lens, as

percentages and absolute measurements with a 96 x 54 inch (1.78:1) screen.

Folded Optics In rear-projection applications where space behind the projector is limited, one or

mirrors may be used to fold the optical path, as shown in Figure 3-5. The position of the

projector and mirror(s) must be accurately set.

Figure 3-5. Folded Optics

Table 3-4. Vertical and Horizontal Lens Shift Ranges

Lens Configuration

Standard or

Short-Throw

Primary, with or

without Shasta

Anamorphic

Lens

Standard

Primary

with Whitney

Anamorphic

Lens

D-73d Ultra

(Long-Throw

Primary), with or

without Shasta

Anamorphic

Lens

Lens Shift Limits, as Percentages of Screen Height or Width (Note 1)

Vertical

(Note 2)

Up 25% (none) 35%

Down 60% 50% - 60% 35%

Horizontal

Left 12.5% (none) 7.5%

Right 12.5% (none) 7.5%

Lens Shift Limits in Inches, with a 96-by-54 inch (1.78:1) Screen

Vertical

Up 13.50 (none) 18.90

Down 32.40 27.00 - 32.40 18.90

Horizontal

Left 12.00 (none) 7.20

Right 12.00 (none) 7.20

Notes:

1. Vertical shift limits are percentages of the screen height. Horizontal shift limits are

percentages of the screen width.

2. Vertical lens shift figures are for ceiling mount configurations. For installations where

the projector is upright, reverse the up/down vertical lens shift percentages.

➤

Screen

Mirror

1 2 ... 39 40 41 42 43 44 45 46 47 48 49 ... 151 152

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