DG 1110-3-106
Figure 3-14
Comparison of Seating Areas,
Front and Rear Screen Systems
achieving the same seating space as with a front
classroom rather than in a separate projection room
projector. However, in practice this is not feasible, as
and use mirrors to achieve the necessary distance to
it would result in grossly inefficient space utilization.
the screen, require no more space than do front
As the diagram indicates, with the typical distance of
projection systems. (Figure 3-16).
1.5W between rear projector and screen, the seating
e. Flexibility.
area would be approximately two-thirds that of a front
Rear projection screens located in separate rooms limit
projection system.
the flexibility of the building by interposing dedicated
space between non-dedicated classroom spaces.
d. Space Utilization.
Front projection systems utilizing projection rooms
f. Image Quality.
require less space than similar rear projection systems,
Front projection systems afford better image quality
due to the required distance between screen and rear
over a broader seating area than do rear projection
projector of 1.5W. (Figure 3-15). However, rear
systems. (Figure 3-17).
projection systems which locate the equipment in the
3-12
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