22 August 2006
Luminance of Room Surfaces: Luminance, or brightness, of the room
surfaces determines the perception of the room. With a bright, uniformly
lighted ceiling and evenly washed walls, the space will feel bright and
visually comfortable. Increase brightness on architectural features or
artwork to highlight certain areas.
Modeling of Faces or Objects: Like conference rooms, presentations and
meetings are typical tasks in boardrooms and the lighting system should
model speakers as well as meeting participants. Lighting that softly
illuminates individual's faces without harsh shadows or excessive contrast
reveals facial expressions and enhances such non-verbal communication.
Reflected Glare: When viewing tasks with a glossy finish on a tabletop,
bright luminaire components, such as visible lamps or bright lenses reflect
in the surface of the task. This situation can make reading tasks annoying
and at times impossible.
Target Horizontal Illuminance ( 10%): 300-500 lux (30-50 fc)
Similar to conference rooms, the lighting of boardrooms and large conference rooms
should adapt to multiple uses of the space. At times, a presentation may require light
on a white board or presentation wall. Other presentations may require a darker space
for slide shows but still provide some light on the table so occupants can still take notes.
For meetings, general lighting from a pendant over the table may be all that is required.
Zone the luminaires separately to allow for the creation of multiple scenes depending on
the space's use. Manual dimming allows a wide range of light levels for these varied
requirements. Manual blinds for windows provide additional control over the daylight
and ambient light levels.