Quantity and Quality of
lighting
Principles
The quantity and quality of lighting in any room depends
upon the purposes, shape, size, height, colour of decoration and decorative
style of the room, the position of permanently placed furniture and the
atmosphere desired. Each must be considered in relation to its importance. The
problem of good lighting is not simply one of providing easy visibility,
lighting may be used to express or suppress architecture and objects, aid
composition, alter room proportions, lend atmosphere and character and improve
the appearance of the decorative scheme.
Satisfactory lighting will conform to the below stated
principles
 | A single strong light source is never as satisfactory
as a number of smaller sources |
| Too many visible light sources tend to confuse
the effect |
| Glare contrast can be avoided by not using a lamp which
is too bright a contrast with the surface glare between window and window wall
can be reduced by lightening the colour of the wall. Standard and table lamps
at eye level should have almost opaque shades to reduce the chance of harsh
contrast and glare with background |
| Ceilings should generally be well lighted to throw
diffused light into a room, give general light on walls, soften shadows from
direct or spot lighting and provide a light background for lighting sources.
Ceilings should generally be light in colour, otherwise little light will be
reflected from them |
| Fittings or reflected light should never be bright
towards the eyes of people |
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