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Atrium
Intense computer environments demand good lighting. To accommodate a stressful
twenty four hour a day workplace RTLD designed a combination indirect system. Striving to
create visual comfort, interior surfaces brightness levels are matched to the level of the
computer monitor brightness. Eye fa tigue is reduced using this general criteria. Two
separately controlled indirect fluorescent systems were used to overcome certain problems.
A radial pattern of linear indirect fixtures with an elliptical profile was chosen by RTLD
to liven up the spatial dynamics of the environment and to compliment the domed ceiling in
the center. The linear fixtures provide the primary component of light and are controlled
by an electronic dimming system. A number of wall recessed rectangular wall washer
fixtures added to fill in the perimeter areas and to illuminate the undersides of the
linear system. This eliminates the contrast of the otherwise dark undersides of the linear
light units. The center ceiling section is domed with an indirect cove supporting end to
end asymmetrical reflector 50 watt biax fluorescent modules. A specified blue neon circle
was deleted from the center dome due to cost restrictions. Additionally, it is important
to add elements of interest as indirect systems tend to produce a veil of shadowless flat
light.
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