Direct luminaire

Direct luminaire

Emits over 90 percent of light downward. Recessed lights, downlights, and trof-fers are direct luminaires.

direct luminaire

A luminaire which emits 90% to 100% of its total output below a horizontal plane through it.
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A metric for judging acceptability of direct luminaires in computer offices.
77 may provide more comfortable lamp brightness without sacrificing efficiency in direct luminaires where the lamp is visible.
Ambient lighting may be achieved with direct luminaires (light fixtures), indirect luminaires, or indirect/direct luminaires.
Although installation and fixture costs have previously been thought to be higher than direct luminaires, popularity and familiarity are lowering expenses.

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