22 August 2006
mounted luminaire or wall sconce with low brightness will illuminate faces
Direct Glare: Direct glare in a bathroom will become an irritant while trying
to shave or apply make-up. Avoid this by keeping the room surfaces bright
and using low glare luminaires.
Reflected Glare: With the use of adjustable mirrors, bathroom spaces
should be designed with reflected glare in mind. Low glare luminaires will
eliminate this as well as direct glare.
Source / Task Eye Geometry: Locate light sources appropriately to avoid
shadows on someone's face. This location should also minimize shadows
throughout the space.
Horizontal and Vertical Illuminance: Appropriately located task lighting
provides higher illuminance levels at the point of the task. For example, at
the mirror, a vanity light provides the necessary light levels for make-up
Target Horizontal Illuminance ( 10%): 300 lux (30 fc)
Bathroom lighting is often achieved with incandescent "globe" vanity lights. While
inefficient, these point sources do provide light from multiple directions on peoples'
faces. A more efficient solution uses linear fluorescent vanity luminaires or a built-in
valence, providing up/down light with a fluorescent lamp. In combination with other
luminaires that light the room surfaces, the same soft lighting can be provided.