Advertisement
,167$//$7,21 $1' 6(783
,GHDO 5RRP /LJKWLQJ
8VHU·V 0DQXDO
0LUDJH
should correspond to the aspect ratio of the image, which depends on the source in
use. For example, standard video from a VCR has a 4:3 ratio (approximately),
whereas a high resolution graphics signal typically has a 5:4 aspect ratio. By default,
Mirage 10000 images will be as large as possible for the inherent aspect ratio of their
source.
NOTE: With a few exceptions, sources with less than 1280 x 1024 resolution have a
4:3 aspect ratio, whereas the normal aspect ratio for 1280 x 1024 sources is 5:4.
The high brightness output of the Mirage 10000 projector is certainly well suited for
locations where ambient lighting is less than optimum for projection, yet there are
still many simple things you can do to optimize your installation.
Visiting a movie theater can give you an idea of what makes an ideal projection
environment. Walls, floors and furnishings are dark and matte finished. A projection
room should not have white reflective ceilings or non-directional lighting such as
fluorescent lights. The white ceiling spreads light, making the room appear brighter.
Keep lighting and reflections to a minimum.
If it is not possible to eliminate fluorescent lights, consider using incandescent spot
lighting or parabolic reflectors ("egg crates") to direct light down to the floor. Light
dimmers or rheostats allow further control.
Outside windows are undesirable in any projection room. A small crack between
curtains on a sunny day can wash out a projected image. If you do have windows,
make sure that window coverings are opaque and overlapping — some window
coverings are designed to provide up to 100 percent blockage of outside light.
Ideally, the material should have a matte finish.
To minimize the effects caused by unwanted light from door and aisle ways,
carefully choose the position of your projector and screen. Figure 2.7 shows an
installation where poor screen placement allows too much unwanted light to enter the
screen. In Figure 2.8, screen and the projector are positioned so that unwanted light is
minimized.
)LJXUH 3RRU 6FUHHQ 3ODFHPHQW
Advertisement
