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2.3
Projector
Position and
Mounting
Throw Distance
•
For rear screen applications, less space is required if a mirror is used to fold the
optical path.
•
Choose the right screen size for the application:
◊
As screen size increases, magnification increases and reduces brightness.
Select a screen size which is appropriate for the venue, but not larger
than that required.
◊
Installing a large screen in a small room is similar to watching television
close up; too large a screen can overpower a room. A good rule of thumb
is to be no closer than 1.5 times the width of the screen.
◊
Larger screens require greater attention to lighting conditions.
•
When laying out the projection room, consider positioning the projector and
screen in a manner which will achieve maximum audience coverage and space
efficiency. For example, placing the screen along the larger wall in a rectangular
room will reduce audience coverage. Figure 2.7 shows two examples of how
audience coverage is maximized.
Figure 2.7. Screen Locations for Maximum Audience Coverage
Installation type, screen type, and lighting all affect where the projector is positioned.
In addition, both throw distance (the distance between the projector and screen) and
vertical position (the height of the projector in relation to the screen) must be
determined for every new installation. Both depend on the screen size and lens type
you are using. Make sure that the room can accommodate the required position of the
projector for the chosen screen size.
'
Throw distance is the distance between the projector's front feet and the screen. For
any installation, an accurate throw distance must be determined in order for the
image to be of the right size for your screen–the farther the projector is from the
screen, the larger the image.
NOTE: If your projector is tilted in relation to the screen, as is sometimes the case
for large venues or elevated installations, throw distance still represents the smallest
measurement between the screen and front feet.
INSTALLATION & SETUP
DLV1280 DX User's Manual
2-7
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