Christie DLV1280 DX, User Manual

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INSTALLATION & SETUP
DLV1280 DX User’s Manual
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Rear Screen, Floor Mount Installation
ADVANTAGES CONSIDERATIONS
• Projector is completely hidden
• Projector is easily accessed
• Usually good ambient light rejection
• Requires separate room
Rear Screen, Inverted Mount (ceiling) Installation
ADVANTAGES CONSIDERATIONS
• Projector is completely hidden
• Usually good ambient light rejection
• Requires separate room
• Installation cost is usually higher
Rear Screen, Floor Mount with Mirror
ADVANTAGES CONSIDERATIONS
• Projector is completely hidden
•
Usually good ambient light rejection
•
Requires less space behind screen than
other rear screen installations
• Requires separate room
•
Installation cost is usually higher
Front Screen Installations
While there are two basic screen types, flat and curved, generally flat screens are
recommended for this projector. Flat screens offer a gain of about 1 with a viewing
angle just less than 180°. Incident light reflects equally in all directions so the
audience can see the display from various angles. Because of the low gain, flat
screens are most effective when ambient lighting is reduced, although this difference
may be negligible given the high brightness output from this projector.
Figure 2.1. Audience Coverage with Flat Screen
NOTE: Lenses for this projector are designed primarily for use with flat screens, but
the projector depth-of-field range allows the lens to be focused on curved screens as
well. While focus remains sharp in the corners, there may be significant pincushion
distortion, primarily at the top of the screen.
Rear Screen Installations
There are two basic types of rear screens: diffused and optical. A diffused screen has
a surface which spreads the light striking it. Purely diffused screens have a gain of
less than 1. The main advantage of the diffused screen is its wide viewing angle,
similar to that of a flat screen for front screen projection. Optical screens take light
from the projector and redirect it to increase the light intensity at the front of the
screen. This reduces it in other areas. A viewing cone, similar to that of a curved
front screen installation, is created.
Screen Type
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