Christie HAL Series User Manual page 6


Choose the installation type which suits your needs: front or rear screen, floor
mount or inverted mount.
ADVANTAGES
•
Easy to set up
•
Can be moved or changed quickly
•
Easy to access
ADVANTAGES
•
Does not take up audience space
•
Projector is unobtrusive
•
Projector cannot be accidentally moved
ADVANTAGES
•
Projector is completely hidden
•
Projector is easily accessed
•
Usually good ambient light rejection
ADVANTAGES
•
Projector is completely hidden
•
Usually good ambient light rejection
ADVANTAGES
•
Projector is completely hidden
•
Usually good ambient light rejection
•
Requires less space behind screen than
other rear screen installations

Screen type is important when designing a projection system. Inexperienced
users or installers should always consult their dealer when deciding on screen
type. The following guidelines explain the differences between screen types.
There are two basic screen types: flat and curved. The choice between a flat
screen or a curved screen is dependent on audience viewing angle and screen
gain. There is always a trade-off between viewing angle and gain. Viewing
angles for both screen types are illustrated in Figures 2-1 and 2-2 (plan views).
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 lower gain, flat screens are more effective
when ambient lighting is reduced.
INSTALLATION & SETUP
CONSIDERATIONS
•
Shares floor space with audience
CONSIDERATIONS
•
Installation is more permanent
•
It is more difficult to access the projector
CONSIDERATIONS
•
Requires separate room
CONSIDERATIONS
•
Requires separate room
•
Installation cost is usually higher
CONSIDERATIONS
•
Requires separate room.
•
Installation cost is usually higher
DLV 1280
User's Manual
2-3